From 8ff255afb022b8e183c7aa1ecc4ba8d0563e1e17 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Date: Sun, 3 Jun 2012 20:48:20 +0200
Subject: alpha/PCI: move fixup hooks from __init to __devinit

The fixups are executed once the pci-device is found which is during
boot process so __init seems fine as long as the platform does not
support hotplug.

However it is possible to remove the PCI bus at run time and have it
rediscovered again via "echo 1 > /sys/bus/pci/rescan" and this will call
the fixups again.

Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
 arch/alpha/kernel/pci.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 1a629636cc1..026d49f28de 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -59,15 +59,13 @@ struct pci_controller *pci_isa_hose;
  * Quirks.
  */
 
-static void __init
-quirk_isa_bridge(struct pci_dev *dev)
+static void __devinit quirk_isa_bridge(struct pci_dev *dev)
 {
 	dev->class = PCI_CLASS_BRIDGE_ISA << 8;
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82378, quirk_isa_bridge);
 
-static void __init
-quirk_cypress(struct pci_dev *dev)
+static void __devinit quirk_cypress(struct pci_dev *dev)
 {
 	/* The Notorious Cy82C693 chip.  */
 
@@ -106,8 +104,7 @@ quirk_cypress(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CONTAQ, PCI_DEVICE_ID_CONTAQ_82C693, quirk_cypress);
 
 /* Called for each device after PCI setup is done. */
-static void __init
-pcibios_fixup_final(struct pci_dev *dev)
+static void __devinit pcibios_fixup_final(struct pci_dev *dev)
 {
 	unsigned int class = dev->class >> 8;
 
-- 
cgit v1.2.3


From b918c62e086b2130a7bae44110ca516ef10bfe5a Mon Sep 17 00:00:00 2001
From: Yinghai Lu <yinghai@kernel.org>
Date: Thu, 17 May 2012 18:51:11 -0700
Subject: PCI: replace struct pci_bus secondary/subordinate with busn_res

Replace the struct pci_bus secondary/subordinate members with the
struct resource busn_res.  Later we'll build a resource tree of these
bus numbers.

[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
 arch/alpha/kernel/pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 1a629636cc1..53229a49631 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -359,7 +359,7 @@ common_init_pci(void)
 					hose, &resources);
 		hose->bus = bus;
 		hose->need_domain_info = need_domain_info;
-		next_busno = bus->subordinate + 1;
+		next_busno = bus->busn_res.end + 1;
 		/* Don't allow 8-bit bus number overflow inside the hose -
 		   reserve some space for bridges. */ 
 		if (next_busno > 224) {
-- 
cgit v1.2.3


From 9d74c5c0a3194f7a4351c47db09449a2e1d97ec1 Mon Sep 17 00:00:00 2001
From: Myron Stowe <myron.stowe@redhat.com>
Date: Mon, 25 Jun 2012 21:31:10 -0600
Subject: alpha/PCI: factor out pcibios_setup()

The PCI core provides a generic pcibios_setup() routine.  Drop this
architecture-specific version in favor of that.

Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
 arch/alpha/kernel/pci.c | 6 ------
 1 file changed, 6 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 1a629636cc1..133d2d445a3 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -198,12 +198,6 @@ pcibios_init(void)
 
 subsys_initcall(pcibios_init);
 
-char * __devinit
-pcibios_setup(char *str)
-{
-	return str;
-}
-
 #ifdef ALPHA_RESTORE_SRM_SETUP
 static struct pdev_srm_saved_conf *srm_saved_configs;
 
-- 
cgit v1.2.3


From 7eafef6d1d712aa9973c3cbd0013a5b66d5a6604 Mon Sep 17 00:00:00 2001
From: Paul Bolle <pebolle@tiscali.nl>
Date: Mon, 30 Jul 2012 14:39:24 -0700
Subject: alpha: remove mysterious if zero-ed out includes

There's a small group of odd looking includes in smc37c669.c.  These
includes appear to be if zero-ed out ever since they were added to the
tree (in v2.1.89).  Their purpose is unclear to me.  Perhaps they were
used in someones build system.  Whatever their purpose was, nothing else
uses something comparable.  This entire if zero-ed out block might as well
be removed.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/alpha/kernel/smc37c669.c | 12 ------------
 1 file changed, 12 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/smc37c669.c b/arch/alpha/kernel/smc37c669.c
index 0435921d41c..c803fc76ae4 100644
--- a/arch/alpha/kernel/smc37c669.c
+++ b/arch/alpha/kernel/smc37c669.c
@@ -933,18 +933,6 @@ void SMC37c669_display_device_info(
  *
  *--
  */
-#if 0
-/* $INCLUDE_OPTIONS$ */
-#include    "cp$inc:platform_io.h"
-/* $INCLUDE_OPTIONS_END$ */
-#include    "cp$src:common.h"
-#include    "cp$inc:prototypes.h"
-#include    "cp$src:kernel_def.h"
-#include    "cp$src:msg_def.h"
-#include    "cp$src:smcc669_def.h"
-/* Platform-specific includes */
-#include    "cp$src:platform.h"
-#endif
 
 #ifndef TRUE
 #define TRUE 1
-- 
cgit v1.2.3


From b19e2ca77ee4becadc85341bb0c1cee454dd4fd5 Mon Sep 17 00:00:00 2001
From: Jiri Slaby <jslaby@suse.cz>
Date: Tue, 7 Aug 2012 21:47:51 +0200
Subject: TTY: use tty_port_link_device

So now for those drivers that can use neither tty_port_install nor
tty_port_register_driver but still have tty_port available before
tty_register_driver we use newly added tty_port_link_device.

The rest of the drivers that still do not provide tty_struct <->
tty_port link will have to be converted to implement
tty->ops->install.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/alpha/kernel/srmcons.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/srmcons.c b/arch/alpha/kernel/srmcons.c
index 3ea809430ed..5d5865204a1 100644
--- a/arch/alpha/kernel/srmcons.c
+++ b/arch/alpha/kernel/srmcons.c
@@ -223,6 +223,7 @@ srmcons_init(void)
 		driver->subtype = SYSTEM_TYPE_SYSCONS;
 		driver->init_termios = tty_std_termios;
 		tty_set_operations(driver, &srmcons_ops);
+		tty_port_link_device(&srmcons_singleton.port, driver, 0);
 		err = tty_register_driver(driver);
 		if (err) {
 			put_tty_driver(driver);
-- 
cgit v1.2.3


From d8d5da129857bfd54b603771fca5409062167392 Mon Sep 17 00:00:00 2001
From: Michael Cree <mcree@orcon.net.nz>
Date: Sun, 19 Aug 2012 14:40:57 +1200
Subject: alpha: Wire up cross memory attach syscalls

Add sys_process_vm_readv and sys_process_vm_writev to Alpha.

Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Acked-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/alpha/kernel/systbls.S | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
index 87835235f11..b64157c98e0 100644
--- a/arch/alpha/kernel/systbls.S
+++ b/arch/alpha/kernel/systbls.S
@@ -522,6 +522,8 @@ sys_call_table:
 	.quad sys_setns
 	.quad sys_accept4
 	.quad sys_sendmmsg
+	.quad sys_process_vm_readv
+	.quad sys_process_vm_writev		/* 505 */
 
 	.size sys_call_table, . - sys_call_table
 	.type sys_call_table, @object
-- 
cgit v1.2.3


From f2db633d301b4b50f5f93de0e8314cc81e9bc7de Mon Sep 17 00:00:00 2001
From: Michael Cree <mcree@orcon.net.nz>
Date: Sun, 19 Aug 2012 14:40:58 +1200
Subject: alpha: Use new generic strncpy_from_user() and strnlen_user()

Similar to x86/sparc/powerpc implementations except:
1) we implement an extremely efficient has_zero()/find_zero()
   sequence with both prep_zero_mask() and create_zero_mask()
   no-operations.
2) Our output from prep_zero_mask() differs in that only the
   lowest eight bits are used to represent the zero bytes
   nevertheless it can be safely ORed with other similar masks
   from prep_zero_mask() and forms input to create_zero_mask(),
   the two fundamental properties prep_zero_mask() must satisfy.

Tests on EV67 and EV68 CPUs revealed that the generic code is
essentially as fast (to within 0.5% of CPU cycles) of the old
Alpha specific code for large quadword-aligned strings, despite
the 30% extra CPU instructions executed.  In contrast, the
generic code for unaligned strings is substantially slower (by
more than a factor of 3) than the old Alpha specific code.

Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Acked-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/alpha/kernel/alpha_ksyms.c | 2 --
 1 file changed, 2 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/alpha_ksyms.c b/arch/alpha/kernel/alpha_ksyms.c
index d96e742d4dc..a354277bbaa 100644
--- a/arch/alpha/kernel/alpha_ksyms.c
+++ b/arch/alpha/kernel/alpha_ksyms.c
@@ -74,8 +74,6 @@ EXPORT_SYMBOL(alpha_fp_emul);
  */
 EXPORT_SYMBOL(__copy_user);
 EXPORT_SYMBOL(__do_clear_user);
-EXPORT_SYMBOL(__strncpy_from_user);
-EXPORT_SYMBOL(__strnlen_user);
 
 /* 
  * SMP-specific symbols.
-- 
cgit v1.2.3


From be53db6e4edd9dc013b21a929ad2b142dea8b9c0 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@ZenIV.linux.org.uk>
Date: Sun, 19 Aug 2012 14:40:59 +1200
Subject: alpha: take a bunch of syscalls into osf_sys.c

New helper: current_thread_info().  Allows to do a bunch of odd syscalls
in C. While we are at it, there had never been a reason to do
osf_getpriority() in assembler.  We also get "namespace"-aware (read:
consistent with getuid(2), etc.) behaviour from getx?id() syscalls now.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Acked-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/alpha/kernel/entry.S   | 109 --------------------------------------------
 arch/alpha/kernel/osf_sys.c |  49 ++++++++++++++++++++
 arch/alpha/kernel/systbls.S |   2 +-
 3 files changed, 50 insertions(+), 110 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 6d159cee5f2..22b0c4d414a 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -796,115 +796,6 @@ sys_rt_sigreturn:
 	br	ret_from_sys_call
 .end sys_rt_sigreturn
 
-	.align	4
-	.globl	sys_sethae
-	.ent	sys_sethae
-sys_sethae:
-	.prologue 0
-	stq	$16, 152($sp)
-	ret
-.end sys_sethae
-
-	.align	4
-	.globl	osf_getpriority
-	.ent	osf_getpriority
-osf_getpriority:
-	lda	$sp, -16($sp)
-	stq	$26, 0($sp)
-	.prologue 0
-
-	jsr	$26, sys_getpriority
-
-	ldq	$26, 0($sp)
-	blt	$0, 1f
-
-	/* Return value is the unbiased priority, i.e. 20 - prio.
-	   This does result in negative return values, so signal
-	   no error by writing into the R0 slot.  */
-	lda	$1, 20
-	stq	$31, 16($sp)
-	subl	$1, $0, $0
-	unop
-
-1:	lda	$sp, 16($sp)
-	ret
-.end osf_getpriority
-
-	.align	4
-	.globl	sys_getxuid
-	.ent	sys_getxuid
-sys_getxuid:
-	.prologue 0
-	ldq	$2, TI_TASK($8)
-	ldq	$3, TASK_CRED($2)
-	ldl	$0, CRED_UID($3)
-	ldl	$1, CRED_EUID($3)
-	stq	$1, 80($sp)
-	ret
-.end sys_getxuid
-
-	.align	4
-	.globl	sys_getxgid
-	.ent	sys_getxgid
-sys_getxgid:
-	.prologue 0
-	ldq	$2, TI_TASK($8)
-	ldq	$3, TASK_CRED($2)
-	ldl	$0, CRED_GID($3)
-	ldl	$1, CRED_EGID($3)
-	stq	$1, 80($sp)
-	ret
-.end sys_getxgid
-
-	.align	4
-	.globl	sys_getxpid
-	.ent	sys_getxpid
-sys_getxpid:
-	.prologue 0
-	ldq	$2, TI_TASK($8)
-
-	/* See linux/kernel/timer.c sys_getppid for discussion
-	   about this loop.  */
-	ldq	$3, TASK_GROUP_LEADER($2)
-	ldq	$4, TASK_REAL_PARENT($3)
-	ldl	$0, TASK_TGID($2)
-1:	ldl	$1, TASK_TGID($4)
-#ifdef CONFIG_SMP
-	mov	$4, $5
-	mb
-	ldq	$3, TASK_GROUP_LEADER($2)
-	ldq	$4, TASK_REAL_PARENT($3)
-	cmpeq	$4, $5, $5
-	beq	$5, 1b
-#endif
-	stq	$1, 80($sp)
-	ret
-.end sys_getxpid
-
-	.align	4
-	.globl	sys_alpha_pipe
-	.ent	sys_alpha_pipe
-sys_alpha_pipe:
-	lda	$sp, -16($sp)
-	stq	$26, 0($sp)
-	.prologue 0
-
-	mov	$31, $17
-	lda	$16, 8($sp)
-	jsr	$26, do_pipe_flags
-
-	ldq	$26, 0($sp)
-	bne	$0, 1f
-
-	/* The return values are in $0 and $20.  */
-	ldl	$1, 12($sp)
-	ldl	$0, 8($sp)
-
-	stq	$1, 80+16($sp)
-1:	lda	$sp, 16($sp)
-	ret
-.end sys_alpha_pipe
-
 	.align	4
 	.globl	sys_execve
 	.ent	sys_execve
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 98a103621af..bc1acdda7a5 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -1404,3 +1404,52 @@ SYSCALL_DEFINE3(osf_writev, unsigned long, fd,
 }
 
 #endif
+
+SYSCALL_DEFINE2(osf_getpriority, int, which, int, who)
+{
+	int prio = sys_getpriority(which, who);
+	if (prio >= 0) {
+		/* Return value is the unbiased priority, i.e. 20 - prio.
+		   This does result in negative return values, so signal
+		   no error */
+		force_successful_syscall_return();
+		prio = 20 - prio;
+	}
+	return prio;
+}
+
+SYSCALL_DEFINE0(getxuid)
+{
+	current_pt_regs()->r20 = sys_geteuid();
+	return sys_getuid();
+}
+
+SYSCALL_DEFINE0(getxgid)
+{
+	current_pt_regs()->r20 = sys_getegid();
+	return sys_getgid();
+}
+
+SYSCALL_DEFINE0(getxpid)
+{
+	current_pt_regs()->r20 = sys_getppid();
+	return sys_getpid();
+}
+
+SYSCALL_DEFINE0(alpha_pipe)
+{
+	int fd[2];
+	int res = do_pipe_flags(fd, 0);
+	if (!res) {
+		/* The return values are in $0 and $20.  */
+		current_pt_regs()->r20 = fd[1];
+		res = fd[0];
+	}
+	return res;
+}
+
+SYSCALL_DEFINE1(sethae, unsigned long, val)
+{
+	current_pt_regs()->hae = val;
+	return 0;
+}
diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
index b64157c98e0..2ac6b45c3e0 100644
--- a/arch/alpha/kernel/systbls.S
+++ b/arch/alpha/kernel/systbls.S
@@ -111,7 +111,7 @@ sys_call_table:
 	.quad sys_socket
 	.quad sys_connect
 	.quad sys_accept
-	.quad osf_getpriority			/* 100 */
+	.quad sys_osf_getpriority			/* 100 */
 	.quad sys_send
 	.quad sys_recv
 	.quad sys_sigreturn
-- 
cgit v1.2.3


From 28d353d9891c28496e366bebe4e65233f59ad1f6 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@ZenIV.linux.org.uk>
Date: Sun, 19 Aug 2012 14:41:00 +1200
Subject: alpha: take kernel_execve() out of entry.S

Signed-off-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Acked-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/alpha/kernel/alpha_ksyms.c |  1 -
 arch/alpha/kernel/entry.S       | 52 -----------------------------------------
 arch/alpha/kernel/process.c     | 19 +++++++++++++++
 3 files changed, 19 insertions(+), 53 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/alpha_ksyms.c b/arch/alpha/kernel/alpha_ksyms.c
index a354277bbaa..15fa821d09c 100644
--- a/arch/alpha/kernel/alpha_ksyms.c
+++ b/arch/alpha/kernel/alpha_ksyms.c
@@ -52,7 +52,6 @@ EXPORT_SYMBOL(alpha_write_fp_reg_s);
 
 /* entry.S */
 EXPORT_SYMBOL(kernel_thread);
-EXPORT_SYMBOL(kernel_execve);
 
 /* Networking helper routines. */
 EXPORT_SYMBOL(csum_tcpudp_magic);
diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 22b0c4d414a..ec0da0567ab 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -663,58 +663,6 @@ kernel_thread:
 	br	ret_to_kernel
 .end kernel_thread
 
-/*
- * kernel_execve(path, argv, envp)
- */
-	.align	4
-	.globl	kernel_execve
-	.ent	kernel_execve
-kernel_execve:
-	/* We can be called from a module.  */
-	ldgp	$gp, 0($27)
-	lda	$sp, -(32+SIZEOF_PT_REGS+8)($sp)
-	.frame	$sp, 32+SIZEOF_PT_REGS+8, $26, 0
-	stq	$26, 0($sp)
-	stq	$16, 8($sp)
-	stq	$17, 16($sp)
-	stq	$18, 24($sp)
-	.prologue 1
-
-	lda	$16, 32($sp)
-	lda	$17, 0
-	lda	$18, SIZEOF_PT_REGS
-	bsr	$26, memset		!samegp
-
-	/* Avoid the HAE being gratuitously wrong, which would cause us
-	   to do the whole turn off interrupts thing and restore it.  */
-	ldq	$2, alpha_mv+HAE_CACHE
-	stq	$2, 152+32($sp)
-
-	ldq	$16, 8($sp)
-	ldq	$17, 16($sp)
-	ldq	$18, 24($sp)
-	lda	$19, 32($sp)
-	bsr	$26, do_execve		!samegp
-
-	ldq	$26, 0($sp)
-	bne	$0, 1f			/* error! */
-
-	/* Move the temporary pt_regs struct from its current location
-	   to the top of the kernel stack frame.  See copy_thread for
-	   details for a normal process.  */
-	lda	$16, 0x4000 - SIZEOF_PT_REGS($8)
-	lda	$17, 32($sp)
-	lda	$18, SIZEOF_PT_REGS
-	bsr	$26, memmove		!samegp
-
-	/* Take that over as our new stack frame and visit userland!  */
-	lda	$sp, 0x4000 - SIZEOF_PT_REGS($8)
-	br	$31, ret_from_sys_call
-
-1:	lda	$sp, 32+SIZEOF_PT_REGS+8($sp)
-	ret
-.end kernel_execve
-
 
 /*
  * Special system calls.  Most of these are special in that they either
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 153d3fce3e8..d6fde98b74b 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -455,3 +455,22 @@ get_wchan(struct task_struct *p)
 	}
 	return pc;
 }
+
+int kernel_execve(const char *path, const char *const argv[], const char *const envp[])
+{
+	/* Avoid the HAE being gratuitously wrong, which would cause us
+	   to do the whole turn off interrupts thing and restore it.  */
+	struct pt_regs regs = {.hae = alpha_mv.hae_cache};
+	int err = do_execve(path, argv, envp, &regs);
+	if (!err) {
+		struct pt_regs *p = current_pt_regs();
+		/* copy regs to normal position and off to userland we go... */
+		*p = regs;
+		__asm__ __volatile__ (
+			"mov	%0, $sp;"
+			"br	$31, ret_from_sys_call"
+			: : "r"(p));
+	}
+	return err;
+}
+EXPORT_SYMBOL(kernel_execve);
-- 
cgit v1.2.3


From 3ddbebf878ac8d958bb34e87a742a6b3adc283a3 Mon Sep 17 00:00:00 2001
From: Thierry Reding <thierry.reding@avionic-design.de>
Date: Mon, 17 Sep 2012 13:22:53 +0200
Subject: PCI: Discard __init annotations for pci_fixup_irqs() and related
 functions

Remove the __init annotations in order to keep pci_fixup_irqs() around
after init (e.g. for hotplug). This requires the same change for the
implementation of pcibios_update_irq() on all architectures. While at
it, all __devinit annotations are removed as well, since they will be
useless now that HOTPLUG is always on.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/alpha/kernel/pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 9816d5a4d17..920392f61ef 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -256,7 +256,7 @@ pcibios_fixup_bus(struct pci_bus *bus)
 	}
 }
 
-void __init
+void
 pcibios_update_irq(struct pci_dev *dev, int irq)
 {
 	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-- 
cgit v1.2.3


From 8885b7b637fa9aca7e1b00581a0173c6956966d3 Mon Sep 17 00:00:00 2001
From: Thierry Reding <thierry.reding@avionic-design.de>
Date: Mon, 17 Sep 2012 13:22:54 +0200
Subject: PCI: Provide a default pcibios_update_irq()

Most architectures implement this in exactly the same way. Instead of
having each architecture duplicate this function, provide a single
implementation in the core and make it a weak symbol so that it can be
overridden on architectures where it is required.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
 arch/alpha/kernel/pci.c | 6 ------
 1 file changed, 6 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 920392f61ef..ef757147cbf 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -256,12 +256,6 @@ pcibios_fixup_bus(struct pci_bus *bus)
 	}
 }
 
-void
-pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
 int
 pcibios_enable_device(struct pci_dev *dev, int mask)
 {
-- 
cgit v1.2.3


From f31389d50817c9a99c3ea81fbb2e3789e303cfe8 Mon Sep 17 00:00:00 2001
From: "Eric W. Biederman" <ebiederm@xmission.com>
Date: Sat, 11 Aug 2012 12:07:24 -0700
Subject: userns: On alpha modify linux_to_osf_stat to use convert from kuids
 and kgids

Silencing build errors and potentially allowing people to use osf
system calls in from processes running in a non-default user namespace.

It seems this stat call was missed in my first round of converting the
stat system calls, bother.

Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
 arch/alpha/kernel/osf_sys.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 98a103621af..32c5f9d8555 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -278,8 +278,8 @@ linux_to_osf_stat(struct kstat *lstat, struct osf_stat __user *osf_stat)
 	tmp.st_dev	= lstat->dev;
 	tmp.st_mode	= lstat->mode;
 	tmp.st_nlink	= lstat->nlink;
-	tmp.st_uid	= lstat->uid;
-	tmp.st_gid	= lstat->gid;
+	tmp.st_uid	= from_kuid_munged(current_user_ns(), lstat->uid);
+	tmp.st_gid	= from_kgid_munged(current_user_ns(), lstat->gid);
 	tmp.st_rdev	= lstat->rdev;
 	tmp.st_ldev	= lstat->rdev;
 	tmp.st_size	= lstat->size;
-- 
cgit v1.2.3


From 6a6c0272f17cc80a8286d915f2ddf31557c2d559 Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Thu, 23 Aug 2012 14:11:25 +0200
Subject: alpha: Fix preemption handling in idle loop

cpu_idle() is called on the boot CPU by the init code with
preemption disabled. But the cpu_idle() function in alpha
doesn't handle this when it calls schedule() directly.

Fix it by converting it into schedule_preempt_disabled().

Also disable preemption before calling cpu_idle() from
secondary CPU entry code to stay consistent with this
state.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Tested-by: Michael Cree <mcree@orcon.net.nz>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: alpha <linux-alpha@vger.kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
---
 arch/alpha/kernel/process.c | 3 ++-
 arch/alpha/kernel/smp.c     | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index d6fde98b74b..db56f31dbf7 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -56,7 +56,8 @@ cpu_idle(void)
 
 		while (!need_resched())
 			cpu_relax();
-		schedule();
+
+		schedule_preempt_disabled();
 	}
 }
 
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index 35ddc02bfa4..a41ad90a97a 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -166,6 +166,7 @@ smp_callin(void)
 	DBGS(("smp_callin: commencing CPU %d current %p active_mm %p\n",
 	      cpuid, current, current->active_mm));
 
+	preempt_disable();
 	/* Do nothing.  */
 	cpu_idle();
 }
-- 
cgit v1.2.3


From 4c94cada48f7c660eca582be6032427a5e367117 Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Wed, 22 Aug 2012 17:27:34 +0200
Subject: alpha: Add missing RCU idle APIs on idle loop

In the old times, the whole idle task was considered
as an RCU quiescent state. But as RCU became more and
more successful overtime, some RCU read side critical
section have been added even in the code of some
architectures idle tasks, for tracing for example.

So nowadays, rcu_idle_enter() and rcu_idle_exit() must
be called by the architecture to tell RCU about the part
in the idle loop that doesn't make use of rcu read side
critical sections, typically the part that puts the CPU
in low power mode.

This is necessary for RCU to find the quiescent states in
idle in order to complete grace periods.

Add this missing pair of calls in the Alpha's idle loop.

Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Tested-by: Michael Cree <mcree@orcon.net.nz>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: alpha <linux-alpha@vger.kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: <stable@vger.kernel.org> # 3.3+
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
---
 arch/alpha/kernel/process.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index db56f31dbf7..83638aa096d 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -28,6 +28,7 @@
 #include <linux/tty.h>
 #include <linux/console.h>
 #include <linux/slab.h>
+#include <linux/rcupdate.h>
 
 #include <asm/reg.h>
 #include <asm/uaccess.h>
@@ -54,9 +55,11 @@ cpu_idle(void)
 		/* FIXME -- EV6 and LCA45 know how to power down
 		   the CPU.  */
 
+		rcu_idle_enter();
 		while (!need_resched())
 			cpu_relax();
 
+		rcu_idle_exit();
 		schedule_preempt_disabled();
 	}
 }
-- 
cgit v1.2.3


From 866ecfdd7cf05680acba635ecf7f30695d8039db Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 26 Aug 2012 20:36:23 -0400
Subject: switch osf_getdirentries() to fget_light()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/osf_sys.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index bc1acdda7a5..d6c49e67d3f 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -144,12 +144,12 @@ SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd,
 		struct osf_dirent __user *, dirent, unsigned int, count,
 		long __user *, basep)
 {
-	int error;
+	int error, fput_needed;
 	struct file *file;
 	struct osf_dirent_callback buf;
 
 	error = -EBADF;
-	file = fget(fd);
+	file = fget_light(fd, &fput_needed);
 	if (!file)
 		goto out;
 
@@ -164,7 +164,7 @@ SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd,
 	if (count != buf.count)
 		error = count - buf.count;
 
-	fput(file);
+	fput_light(file, fput_needed);
  out:
 	return error;
 }
-- 
cgit v1.2.3


From 2903ff019b346ab8d36ebbf54853c3aaf6590608 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 28 Aug 2012 12:52:22 -0400
Subject: switch simple cases of fget_light to fdget

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/osf_sys.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index d6c49e67d3f..f1daf7ae42e 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -144,28 +144,25 @@ SYSCALL_DEFINE4(osf_getdirentries, unsigned int, fd,
 		struct osf_dirent __user *, dirent, unsigned int, count,
 		long __user *, basep)
 {
-	int error, fput_needed;
-	struct file *file;
+	int error;
+	struct fd arg = fdget(fd);
 	struct osf_dirent_callback buf;
 
-	error = -EBADF;
-	file = fget_light(fd, &fput_needed);
-	if (!file)
-		goto out;
+	if (!arg.file)
+		return -EBADF;
 
 	buf.dirent = dirent;
 	buf.basep = basep;
 	buf.count = count;
 	buf.error = 0;
 
-	error = vfs_readdir(file, osf_filldir, &buf);
+	error = vfs_readdir(arg.file, osf_filldir, &buf);
 	if (error >= 0)
 		error = buf.error;
 	if (count != buf.count)
 		error = count - buf.count;
 
-	fput_light(file, fput_needed);
- out:
+	fdput(arg);
 	return error;
 }
 
-- 
cgit v1.2.3


From 756144f8ea2e4fccbbf1a5644f3e1e889a48f765 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 2 Aug 2012 12:53:03 +0400
Subject: alpha: switch to generic sys_execve()

get rid of sys_execve() wrapper, while we are at it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/entry.S   |  9 ---------
 arch/alpha/kernel/process.c | 21 ---------------------
 2 files changed, 30 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index ec0da0567ab..61ff145cab6 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -744,15 +744,6 @@ sys_rt_sigreturn:
 	br	ret_from_sys_call
 .end sys_rt_sigreturn
 
-	.align	4
-	.globl	sys_execve
-	.ent	sys_execve
-sys_execve:
-	.prologue 0
-	mov	$sp, $19
-	jmp	$31, do_sys_execve
-.end sys_execve
-
 	.align	4
 	.globl	alpha_ni_syscall
 	.ent	alpha_ni_syscall
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index d6fde98b74b..14547390919 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -381,27 +381,6 @@ dump_elf_task_fp(elf_fpreg_t *dest, struct task_struct *task)
 }
 EXPORT_SYMBOL(dump_elf_task_fp);
 
-/*
- * sys_execve() executes a new program.
- */
-asmlinkage int
-do_sys_execve(const char __user *ufilename,
-	      const char __user *const __user *argv,
-	      const char __user *const __user *envp, struct pt_regs *regs)
-{
-	int error;
-	char *filename;
-
-	filename = getname(ufilename);
-	error = PTR_ERR(filename);
-	if (IS_ERR(filename))
-		goto out;
-	error = do_execve(filename, argv, envp, regs);
-	putname(filename);
-out:
-	return error;
-}
-
 /*
  * Return saved PC of a blocked thread.  This assumes the frame
  * pointer is the 6th saved long on the kernel stack and that the
-- 
cgit v1.2.3


From cba1ec7e88a0257eb13e84d170a93cd52b702562 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 9 Sep 2012 22:03:42 -0400
Subject: alpha: switch to generic kernel_thread()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/alpha_ksyms.c |  3 ---
 arch/alpha/kernel/entry.S       | 57 ++++++++---------------------------------
 arch/alpha/kernel/process.c     | 39 ++++++++++++++--------------
 3 files changed, 30 insertions(+), 69 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/alpha_ksyms.c b/arch/alpha/kernel/alpha_ksyms.c
index 15fa821d09c..89566b346c0 100644
--- a/arch/alpha/kernel/alpha_ksyms.c
+++ b/arch/alpha/kernel/alpha_ksyms.c
@@ -50,9 +50,6 @@ EXPORT_SYMBOL(alpha_read_fp_reg_s);
 EXPORT_SYMBOL(alpha_write_fp_reg);
 EXPORT_SYMBOL(alpha_write_fp_reg_s);
 
-/* entry.S */
-EXPORT_SYMBOL(kernel_thread);
-
 /* Networking helper routines. */
 EXPORT_SYMBOL(csum_tcpudp_magic);
 EXPORT_SYMBOL(ip_compute_csum);
diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 61ff145cab6..421dccf273e 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -609,59 +609,22 @@ ret_from_fork:
 .end ret_from_fork
 
 /*
- * kernel_thread(fn, arg, clone_flags)
+ * ... and new kernel threads - here
  */
 	.align 4
-	.globl	kernel_thread
-	.ent	kernel_thread
-kernel_thread:
-	/* We can be called from a module.  */
-	ldgp	$gp, 0($27)
-	.prologue 1
-	subq	$sp, SP_OFF+6*8, $sp
-	br	$1, 2f		/* load start address */
-
-	/* We've now "returned" from a fake system call.  */
-	unop
-	blt	$0, 1f		/* error?  */
-	ldi	$1, 0x3fff
-	beq	$20, 1f		/* parent or child?  */
-
-	bic	$sp, $1, $8	/* in child.  */
-	jsr	$26, ($27)
+	.globl	ret_from_kernel_thread
+	.ent	ret_from_kernel_thread
+ret_from_kernel_thread:
+	mov	$17, $16
+	jsr	$26, schedule_tail
+	mov	$9, $27
+	mov	$10, $16
+	jsr	$26, ($9)
 	ldgp	$gp, 0($26)
 	mov	$0, $16
 	mov	$31, $26
 	jmp	$31, sys_exit
-
-1:	ret			/* in parent.  */
-
-	.align 4
-2:	/* Fake a system call stack frame, as we can't do system calls
-	   from kernel space.  Note that we store FN and ARG as they
-	   need to be set up in the child for the call.  Also store $8
-	   and $26 for use in the parent.  */
-	stq	$31, SP_OFF($sp)	/* ps */
-	stq	$1, SP_OFF+8($sp)	/* pc */
-	stq	$gp, SP_OFF+16($sp)	/* gp */
-	stq	$16, 136($sp)		/* $27; FN for child */
-	stq	$17, SP_OFF+24($sp)	/* $16; ARG for child */
-	stq	$8, 64($sp)		/* $8 */
-	stq	$26, 128($sp)		/* $26 */
-	/* Avoid the HAE being gratuitously wrong, to avoid restoring it.  */
-	ldq	$2, alpha_mv+HAE_CACHE
-	stq	$2, 152($sp)		/* HAE */
-
-	/* Shuffle FLAGS to the front; add CLONE_VM.  */
-	ldi	$1, CLONE_VM|CLONE_UNTRACED
-	or	$18, $1, $16
-	bsr	$26, sys_clone
-
-	/* We don't actually care for a3 success widgetry in the kernel.
-	   Not for positive errno values.  */
-	stq	$0, 0($sp)		/* $0 */
-	br	ret_to_kernel
-.end kernel_thread
+.end ret_from_kernel_thread
 
 
 /*
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 14547390919..6b33ecdbc53 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -259,33 +259,35 @@ alpha_vfork(struct pt_regs *regs)
 
 /*
  * Copy an alpha thread..
- *
- * Note the "stack_offset" stuff: when returning to kernel mode, we need
- * to have some extra stack-space for the kernel stack that still exists
- * after the "ret_from_fork".  When returning to user mode, we only want
- * the space needed by the syscall stack frame (ie "struct pt_regs").
- * Use the passed "regs" pointer to determine how much space we need
- * for a kernel fork().
  */
 
 int
 copy_thread(unsigned long clone_flags, unsigned long usp,
-	    unsigned long unused,
+	    unsigned long arg,
 	    struct task_struct * p, struct pt_regs * regs)
 {
 	extern void ret_from_fork(void);
+	extern void ret_from_kernel_thread(void);
 
 	struct thread_info *childti = task_thread_info(p);
-	struct pt_regs * childregs;
-	struct switch_stack * childstack, *stack;
-	unsigned long stack_offset, settls;
-
-	stack_offset = PAGE_SIZE - sizeof(struct pt_regs);
-	if (!(regs->ps & 8))
-		stack_offset = (PAGE_SIZE-1) & (unsigned long) regs;
-	childregs = (struct pt_regs *)
-	  (stack_offset + PAGE_SIZE + task_stack_page(p));
-		
+	struct pt_regs *childregs = task_pt_regs(p);
+	struct switch_stack *childstack, *stack;
+	unsigned long settls;
+
+	childstack = ((struct switch_stack *) childregs) - 1;
+	if (unlikely(!regs)) {
+		/* kernel thread */
+		memset(childstack, 0,
+			sizeof(struct switch_stack) + sizeof(struct pt_regs));
+		childstack->r26 = (unsigned long) ret_from_kernel_thread;
+		childstack->r9 = usp;	/* function */
+		childstack->r10 = arg;
+		childregs->hae = alpha_mv.hae_cache,
+		childti->pcb.usp = 0;
+		childti->pcb.ksp = (unsigned long) childstack;
+		childti->pcb.flags = 1;	/* set FEN, clear everything else */
+		return 0;
+	}
 	*childregs = *regs;
 	settls = regs->r20;
 	childregs->r0 = 0;
@@ -293,7 +295,6 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
 	childregs->r20 = 1;	/* OSF/1 has some strange fork() semantics.  */
 	regs->r20 = 0;
 	stack = ((struct switch_stack *) regs) - 1;
-	childstack = ((struct switch_stack *) childregs) - 1;
 	*childstack = *stack;
 	childstack->r26 = (unsigned long) ret_from_fork;
 	childti->pcb.usp = usp;
-- 
cgit v1.2.3


From 44f4b56b54d2ab5d06c1726f2cde8ca15c8fac47 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 31 May 2012 22:22:52 -0400
Subject: alpha: introduce ret_from_kernel_execve(), switch to generic
 kernel_execve()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/entry.S   | 13 +++++++++++++
 arch/alpha/kernel/process.c | 19 -------------------
 2 files changed, 13 insertions(+), 19 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 421dccf273e..7e43e1156d1 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -626,6 +626,19 @@ ret_from_kernel_thread:
 	jmp	$31, sys_exit
 .end ret_from_kernel_thread
 
+	.globl	ret_from_kernel_execve
+	.align	4
+	.ent	ret_from_kernel_execve
+ret_from_kernel_execve:
+	mov	$16, $sp
+	/* Avoid the HAE being gratuitously wrong, to avoid restoring it.  */
+	ldq	$2, alpha_mv+HAE_CACHE
+	stq	$2, 152($sp)		/* HAE */
+	mov	$31, $19		/* to disable syscall restarts */
+	br	$31, ret_to_user
+
+.end	ret_from_kernel_execve
+
 
 /*
  * Special system calls.  Most of these are special in that they either
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 6b33ecdbc53..f47d764eaa1 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -435,22 +435,3 @@ get_wchan(struct task_struct *p)
 	}
 	return pc;
 }
-
-int kernel_execve(const char *path, const char *const argv[], const char *const envp[])
-{
-	/* Avoid the HAE being gratuitously wrong, which would cause us
-	   to do the whole turn off interrupts thing and restore it.  */
-	struct pt_regs regs = {.hae = alpha_mv.hae_cache};
-	int err = do_execve(path, argv, envp, &regs);
-	if (!err) {
-		struct pt_regs *p = current_pt_regs();
-		/* copy regs to normal position and off to userland we go... */
-		*p = regs;
-		__asm__ __volatile__ (
-			"mov	%0, $sp;"
-			"br	$31, ret_from_sys_call"
-			: : "r"(p));
-	}
-	return err;
-}
-EXPORT_SYMBOL(kernel_execve);
-- 
cgit v1.2.3


From 12f79be93d94698778ff2b3f921073fc5f6780d6 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 26 May 2012 21:44:21 -0400
Subject: alpha: don't open-code trace_report_syscall_{enter,exit}

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/entry.S  | 13 ++++++-------
 arch/alpha/kernel/ptrace.c | 32 +++++++++++++-------------------
 2 files changed, 19 insertions(+), 26 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 7e43e1156d1..2a359c9ee3c 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -418,11 +418,10 @@ $work_notifysig:
 strace:
 	/* set up signal stack, call syscall_trace */
 	bsr	$1, do_switch_stack
-	jsr	$26, syscall_trace
+	jsr	$26, syscall_trace_enter /* returns the syscall number */
 	bsr	$1, undo_switch_stack
 
-	/* get the system call number and the arguments back.. */
-	ldq	$0, 0($sp)
+	/* get the arguments back.. */
 	ldq	$16, SP_OFF+24($sp)
 	ldq	$17, SP_OFF+32($sp)
 	ldq	$18, SP_OFF+40($sp)
@@ -449,7 +448,7 @@ $strace_success:
 	stq	$0, 0($sp)		/* save return value */
 
 	bsr	$1, do_switch_stack
-	jsr	$26, syscall_trace
+	jsr	$26, syscall_trace_leave
 	bsr	$1, undo_switch_stack
 	br	$31, ret_from_sys_call
 
@@ -467,7 +466,7 @@ $strace_error:
 	bsr	$1, do_switch_stack
 	mov	$19, $9		/* save old syscall number */
 	mov	$20, $10	/* save old a3 */
-	jsr	$26, syscall_trace
+	jsr	$26, syscall_trace_leave
 	mov	$9, $19
 	mov	$10, $20
 	bsr	$1, undo_switch_stack
@@ -698,7 +697,7 @@ sys_sigreturn:
 	lda	$sp, -SWITCH_STACK_SIZE($sp)
 	jsr	$26, do_sigreturn
 	bne	$9, 1f
-	jsr	$26, syscall_trace
+	jsr	$26, syscall_trace_leave
 1:	br	$1, undo_switch_stack
 	br	ret_from_sys_call
 .end sys_sigreturn
@@ -715,7 +714,7 @@ sys_rt_sigreturn:
 	lda	$sp, -SWITCH_STACK_SIZE($sp)
 	jsr	$26, do_rt_sigreturn
 	bne	$9, 1f
-	jsr	$26, syscall_trace
+	jsr	$26, syscall_trace_leave
 1:	br	$1, undo_switch_stack
 	br	ret_from_sys_call
 .end sys_rt_sigreturn
diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c
index 54616f496ae..2a4a80ff4a2 100644
--- a/arch/alpha/kernel/ptrace.c
+++ b/arch/alpha/kernel/ptrace.c
@@ -13,6 +13,7 @@
 #include <linux/user.h>
 #include <linux/security.h>
 #include <linux/signal.h>
+#include <linux/tracehook.h>
 
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
@@ -312,25 +313,18 @@ long arch_ptrace(struct task_struct *child, long request,
 	return ret;
 }
 
+asmlinkage unsigned long syscall_trace_enter(void)
+{
+	unsigned long ret = 0;
+	if (test_thread_flag(TIF_SYSCALL_TRACE) &&
+	    tracehook_report_syscall_entry(current_pt_regs()))
+		ret = -1UL;
+	return ret ?: current_pt_regs()->r0;
+}
+
 asmlinkage void
-syscall_trace(void)
+syscall_trace_leave(void)
 {
-	if (!test_thread_flag(TIF_SYSCALL_TRACE))
-		return;
-	if (!(current->ptrace & PT_PTRACED))
-		return;
-	/* The 0x80 provides a way for the tracing parent to distinguish
-	   between a syscall stop and SIGTRAP delivery */
-	ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
-				 ? 0x80 : 0));
-
-	/*
-	 * This isn't the same as continuing with a signal, but it will do
-	 * for normal use.  strace only continues with a signal if the
-	 * stopping signal is not SIGTRAP.  -brl
-	 */
-	if (current->exit_code) {
-		send_sig(current->exit_code, current, 1);
-		current->exit_code = 0;
-	}
+	if (test_thread_flag(TIF_SYSCALL_TRACE))
+		tracehook_report_syscall_exit(current_pt_regs(), 0);
 }
-- 
cgit v1.2.3


From 314e51b9851b4f4e8ab302243ff5a6fc6147f379 Mon Sep 17 00:00:00 2001
From: Konstantin Khlebnikov <khlebnikov@openvz.org>
Date: Mon, 8 Oct 2012 16:29:02 -0700
Subject: mm: kill vma flag VM_RESERVED and mm->reserved_vm counter

A long time ago, in v2.4, VM_RESERVED kept swapout process off VMA,
currently it lost original meaning but still has some effects:

 | effect                 | alternative flags
-+------------------------+---------------------------------------------
1| account as reserved_vm | VM_IO
2| skip in core dump      | VM_IO, VM_DONTDUMP
3| do not merge or expand | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP
4| do not mlock           | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP

This patch removes reserved_vm counter from mm_struct.  Seems like nobody
cares about it, it does not exported into userspace directly, it only
reduces total_vm showed in proc.

Thus VM_RESERVED can be replaced with VM_IO or pair VM_DONTEXPAND | VM_DONTDUMP.

remap_pfn_range() and io_remap_pfn_range() set VM_IO|VM_DONTEXPAND|VM_DONTDUMP.
remap_vmalloc_range() set VM_DONTEXPAND | VM_DONTDUMP.

[akpm@linux-foundation.org: drivers/vfio/pci/vfio_pci.c fixup]
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Carsten Otte <cotte@de.ibm.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Eric Paris <eparis@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Morris <james.l.morris@oracle.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Kentaro Takeda <takedakn@nttdata.co.jp>
Cc: Matt Helsley <matthltc@us.ibm.com>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Venkatesh Pallipadi <venki@google.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/alpha/kernel/pci-sysfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c
index 53649c7d006..b51f7b4818c 100644
--- a/arch/alpha/kernel/pci-sysfs.c
+++ b/arch/alpha/kernel/pci-sysfs.c
@@ -26,7 +26,7 @@ static int hose_mmap_page_range(struct pci_controller *hose,
 		base = sparse ? hose->sparse_io_base : hose->dense_io_base;
 
 	vma->vm_pgoff += base >> PAGE_SHIFT;
-	vma->vm_flags |= (VM_IO | VM_RESERVED);
+	vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
 
 	return io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
 				  vma->vm_end - vma->vm_start,
-- 
cgit v1.2.3


From 7721d3c2083c27bfb8e4c1335d343e25ae1a663f Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 5 Sep 2012 18:08:40 -0400
Subject: alpha: simplify TIF_NEED_RESCHED handling

In case we have both NEED_RESCHED and SIGPENDING/NOTIFY_RESUME,
handle the latter first.  We'll get to original priorities in
the next commit, but now that allows to simplify the treatment
of NEED_RESCHED-only case nicely.  Namely, now there no need to
preserve the data for restarts across the call of schedule() in
$work_resched; we can get there only if we had either returned
from syscall without SIGPENDING (in which case we should've
had no restart-worthy return value and want no restarts) or
already got through do_notify_resume() call (in which case we
want no restarts anymore).  So we can just slap 0 into $19
instead of preserving it (and $20).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/entry.S | 26 +++++++++-----------------
 1 file changed, 9 insertions(+), 17 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 2a359c9ee3c..802108b15be 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -372,26 +372,18 @@ $ret_success:
 	.align	4
 	.ent	work_pending
 work_pending:
-	and	$5, _TIF_NEED_RESCHED, $2
-	beq	$2, $work_notifysig
+	and	$5, _TIF_NOTIFY_RESUME | _TIF_SIGPENDING, $2
+	bne	$2, $work_notifysig
 
 $work_resched:
-	subq	$sp, 16, $sp
-	stq	$19, 0($sp)              /* save syscall nr */
-	stq	$20, 8($sp)              /* and error indication (a3) */
+	/*
+	 * We can get here only if we returned from syscall without SIGPENDING
+	 * or got through work_notifysig already.  Either case means no syscall
+	 * restarts for us, so let $19 and $20 burn.
+	 */
 	jsr	$26, schedule
-	ldq	$19, 0($sp)
-	ldq	$20, 8($sp)
-	addq	$sp, 16, $sp
-	/* Make sure need_resched and sigpending don't change between
-		sampling and the rti.  */
-	lda	$16, 7
-	call_pal PAL_swpipl
-	ldl	$5, TI_FLAGS($8)
-	and	$5, _TIF_WORK_MASK, $2
-	beq	$2, restore_all
-	and	$5, _TIF_NEED_RESCHED, $2
-	bne	$2, $work_resched
+	mov	0, $19
+	br	ret_to_user
 
 $work_notifysig:
 	mov	$sp, $16
-- 
cgit v1.2.3


From 6972d6f25d21e3da58ff1309256c787078405c7f Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 5 Sep 2012 18:30:34 -0400
Subject: alpha: take SIGPENDING/NOTIFY_RESUME loop into signal.c

Turn the slow side of work_pending into C function, including all
the looping.  What we get out of that:
	* we do _not_ call get_signal_to_deliver() with IRQs disabled
anymore
	* no need to save/restore volatiles on each pass if there
turns to be more than one (unlikely, but still)
	* all double-restart prevention is in C now.
	* glue gets simpler.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/entry.S  | 10 ++--------
 arch/alpha/kernel/signal.c | 27 ++++++++++++++++++---------
 2 files changed, 20 insertions(+), 17 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 802108b15be..0c30ccea929 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -390,15 +390,9 @@ $work_notifysig:
 	bsr	$1, do_switch_stack
 	mov	$sp, $17
 	mov	$5, $18
-	mov	$19, $9		/* save old syscall number */
-	mov	$20, $10	/* save old a3 */
-	and	$5, _TIF_SIGPENDING, $2
-	cmovne	$2, 0, $9	/* we don't want double syscall restarts */
-	jsr	$26, do_notify_resume
-	mov	$9, $19
-	mov	$10, $20
+	jsr	$26, do_work_pending
 	bsr	$1, undo_switch_stack
-	br	ret_to_user
+	br	restore_all
 .end work_pending
 
 /*
diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c
index a8c97d42ec8..235a8677eca 100644
--- a/arch/alpha/kernel/signal.c
+++ b/arch/alpha/kernel/signal.c
@@ -568,15 +568,24 @@ do_signal(struct pt_regs * regs, struct switch_stack * sw,
 }
 
 void
-do_notify_resume(struct pt_regs *regs, struct switch_stack *sw,
-		 unsigned long thread_info_flags,
+do_work_pending(struct pt_regs *regs, struct switch_stack *sw,
+		 unsigned long thread_flags,
 		 unsigned long r0, unsigned long r19)
 {
-	if (thread_info_flags & _TIF_SIGPENDING)
-		do_signal(regs, sw, r0, r19);
-
-	if (thread_info_flags & _TIF_NOTIFY_RESUME) {
-		clear_thread_flag(TIF_NOTIFY_RESUME);
-		tracehook_notify_resume(regs);
-	}
+	do {
+		if (thread_flags & _TIF_NEED_RESCHED) {
+			schedule();
+		} else {
+			local_irq_enable();
+			if (thread_flags & _TIF_SIGPENDING) {
+				do_signal(regs, sw, r0, r19);
+				r0 = 0;
+			} else {
+				clear_thread_flag(TIF_NOTIFY_RESUME);
+				tracehook_notify_resume(regs);
+			}
+		}
+		local_irq_disable();
+		thread_flags = current_thread_info()->flags;
+	} while (thread_flags & _TIF_WORK_MASK);
 }
-- 
cgit v1.2.3


From d9d0738a898dd26a417d00a6923eef1015d33735 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 5 Sep 2012 18:53:18 -0400
Subject: alpha: don't bother passing switch_stack separately from regs

It's needed only in setup_sigcontext() and it's always reg - <constant>;
no point passing it all way down through the call chain.  This is just
the signal.c side of that stuff; next will come the asm glue one...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/signal.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c
index 235a8677eca..d0b3507ec6b 100644
--- a/arch/alpha/kernel/signal.c
+++ b/arch/alpha/kernel/signal.c
@@ -298,8 +298,9 @@ get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size)
 
 static long
 setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, 
-		 struct switch_stack *sw, unsigned long mask, unsigned long sp)
+		 unsigned long mask, unsigned long sp)
 {
+	struct switch_stack *sw = (struct switch_stack *)regs - 1;
 	long i, err = 0;
 
 	err |= __put_user(on_sig_stack((unsigned long)sc), &sc->sc_onstack);
@@ -354,7 +355,7 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
 
 static int
 setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
-	    struct pt_regs *regs, struct switch_stack * sw)
+	    struct pt_regs *regs)
 {
 	unsigned long oldsp, r26, err = 0;
 	struct sigframe __user *frame;
@@ -364,7 +365,7 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
 	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
 		return -EFAULT;
 
-	err |= setup_sigcontext(&frame->sc, regs, sw, set->sig[0], oldsp);
+	err |= setup_sigcontext(&frame->sc, regs, set->sig[0], oldsp);
 	if (err)
 		return -EFAULT;
 
@@ -401,7 +402,7 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
 
 static int
 setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
-	       sigset_t *set, struct pt_regs *regs, struct switch_stack * sw)
+	       sigset_t *set, struct pt_regs *regs)
 {
 	unsigned long oldsp, r26, err = 0;
 	struct rt_sigframe __user *frame;
@@ -420,7 +421,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
 	err |= __put_user(sas_ss_flags(oldsp), &frame->uc.uc_stack.ss_flags);
 	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
-	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, sw,
+	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, 
 				set->sig[0], oldsp);
 	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
 	if (err)
@@ -464,15 +465,15 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
  */
 static inline void
 handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
-	      struct pt_regs * regs, struct switch_stack *sw)
+	      struct pt_regs * regs)
 {
 	sigset_t *oldset = sigmask_to_save();
 	int ret;
 
 	if (ka->sa.sa_flags & SA_SIGINFO)
-		ret = setup_rt_frame(sig, ka, info, oldset, regs, sw);
+		ret = setup_rt_frame(sig, ka, info, oldset, regs);
 	else
-		ret = setup_frame(sig, ka, oldset, regs, sw);
+		ret = setup_frame(sig, ka, oldset, regs);
 
 	if (ret) {
 		force_sigsegv(sig, current);
@@ -519,8 +520,7 @@ syscall_restart(unsigned long r0, unsigned long r19,
  * all (if we get here from anything but a syscall return, it will be 0)
  */
 static void
-do_signal(struct pt_regs * regs, struct switch_stack * sw,
-	  unsigned long r0, unsigned long r19)
+do_signal(struct pt_regs *regs, unsigned long r0, unsigned long r19)
 {
 	siginfo_t info;
 	int signr;
@@ -537,7 +537,7 @@ do_signal(struct pt_regs * regs, struct switch_stack * sw,
 		/* Whee!  Actually deliver the signal.  */
 		if (r0)
 			syscall_restart(r0, r19, regs, &ka);
-		handle_signal(signr, &ka, &info, regs, sw);
+		handle_signal(signr, &ka, &info, regs);
 		if (single_stepping) 
 			ptrace_set_bpt(current); /* re-set bpt */
 		return;
@@ -568,7 +568,7 @@ do_signal(struct pt_regs * regs, struct switch_stack * sw,
 }
 
 void
-do_work_pending(struct pt_regs *regs, struct switch_stack *sw,
+do_work_pending(struct pt_regs *regs, struct switch_stack *unused,
 		 unsigned long thread_flags,
 		 unsigned long r0, unsigned long r19)
 {
@@ -578,7 +578,7 @@ do_work_pending(struct pt_regs *regs, struct switch_stack *sw,
 		} else {
 			local_irq_enable();
 			if (thread_flags & _TIF_SIGPENDING) {
-				do_signal(regs, sw, r0, r19);
+				do_signal(regs, r0, r19);
 				r0 = 0;
 			} else {
 				clear_thread_flag(TIF_NOTIFY_RESUME);
-- 
cgit v1.2.3


From cb450766bcafc7bd7d40e9a5a0050745e8c68b3e Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 10 Oct 2012 23:50:59 -0400
Subject: alpha: get rid of switch_stack argument of do_work_pending()

... and now the asm glue side of that.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/entry.S  | 40 +++++++++++++++++++---------------------
 arch/alpha/kernel/signal.c |  3 +--
 2 files changed, 20 insertions(+), 23 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 0c30ccea929..16e074f9e58 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -311,7 +311,7 @@ entSys:
 
 	.align	4
 ret_from_sys_call:
-	cmovne	$26, 0, $19		/* $19 = 0 => non-restartable */
+	cmovne	$26, 0, $18		/* $18 = 0 => non-restartable */
 	ldq	$0, SP_OFF($sp)
 	and	$0, 8, $0
 	beq	$0, ret_to_kernel
@@ -320,8 +320,8 @@ ret_to_user:
 		sampling and the rti.  */
 	lda	$16, 7
 	call_pal PAL_swpipl
-	ldl	$5, TI_FLAGS($8)
-	and	$5, _TIF_WORK_MASK, $2
+	ldl	$17, TI_FLAGS($8)
+	and	$17, _TIF_WORK_MASK, $2
 	bne	$2, work_pending
 restore_all:
 	RESTORE_ALL
@@ -341,10 +341,10 @@ $syscall_error:
 	 * frame to indicate that a negative return value wasn't an
 	 * error number..
 	 */
-	ldq	$19, 0($sp)	/* old syscall nr (zero if success) */
-	beq	$19, $ret_success
+	ldq	$18, 0($sp)	/* old syscall nr (zero if success) */
+	beq	$18, $ret_success
 
-	ldq	$20, 72($sp)	/* .. and this a3 */
+	ldq	$19, 72($sp)	/* .. and this a3 */
 	subq	$31, $0, $0	/* with error in v0 */
 	addq	$31, 1, $1	/* set a3 for errno return */
 	stq	$0, 0($sp)
@@ -362,34 +362,32 @@ $ret_success:
  * Do all cleanup when returning from all interrupts and system calls.
  *
  * Arguments:
- *       $5: TI_FLAGS.
  *       $8: current.
- *      $19: The old syscall number, or zero if this is not a return
+ *      $17: TI_FLAGS.
+ *      $18: The old syscall number, or zero if this is not a return
  *           from a syscall that errored and is possibly restartable.
- *      $20: The old a3 value
+ *      $19: The old a3 value
  */
 
 	.align	4
 	.ent	work_pending
 work_pending:
-	and	$5, _TIF_NOTIFY_RESUME | _TIF_SIGPENDING, $2
+	and	$17, _TIF_NOTIFY_RESUME | _TIF_SIGPENDING, $2
 	bne	$2, $work_notifysig
 
 $work_resched:
 	/*
 	 * We can get here only if we returned from syscall without SIGPENDING
 	 * or got through work_notifysig already.  Either case means no syscall
-	 * restarts for us, so let $19 and $20 burn.
+	 * restarts for us, so let $18 and $19 burn.
 	 */
 	jsr	$26, schedule
-	mov	0, $19
+	mov	0, $18
 	br	ret_to_user
 
 $work_notifysig:
 	mov	$sp, $16
 	bsr	$1, do_switch_stack
-	mov	$sp, $17
-	mov	$5, $18
 	jsr	$26, do_work_pending
 	bsr	$1, undo_switch_stack
 	br	restore_all
@@ -440,9 +438,9 @@ $strace_success:
 
 	.align	3
 $strace_error:
-	ldq	$19, 0($sp)	/* old syscall nr (zero if success) */
-	beq	$19, $strace_success
-	ldq	$20, 72($sp)	/* .. and this a3 */
+	ldq	$18, 0($sp)	/* old syscall nr (zero if success) */
+	beq	$18, $strace_success
+	ldq	$19, 72($sp)	/* .. and this a3 */
 
 	subq	$31, $0, $0	/* with error in v0 */
 	addq	$31, 1, $1	/* set a3 for errno return */
@@ -450,11 +448,11 @@ $strace_error:
 	stq	$1, 72($sp)	/* a3 for return */
 
 	bsr	$1, do_switch_stack
-	mov	$19, $9		/* save old syscall number */
-	mov	$20, $10	/* save old a3 */
+	mov	$18, $9		/* save old syscall number */
+	mov	$19, $10	/* save old a3 */
 	jsr	$26, syscall_trace_leave
-	mov	$9, $19
-	mov	$10, $20
+	mov	$9, $18
+	mov	$10, $19
 	bsr	$1, undo_switch_stack
 
 	mov	$31, $26	/* tell "ret_from_sys_call" we can restart */
diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c
index d0b3507ec6b..32575f85507 100644
--- a/arch/alpha/kernel/signal.c
+++ b/arch/alpha/kernel/signal.c
@@ -568,8 +568,7 @@ do_signal(struct pt_regs *regs, unsigned long r0, unsigned long r19)
 }
 
 void
-do_work_pending(struct pt_regs *regs, struct switch_stack *unused,
-		 unsigned long thread_flags,
+do_work_pending(struct pt_regs *regs, unsigned long thread_flags,
 		 unsigned long r0, unsigned long r19)
 {
 	do {
-- 
cgit v1.2.3


From 5522be6a4624a5f505555569e4d9cee946630686 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 10 Oct 2012 23:12:01 -0400
Subject: alpha: switch to saner kernel_execve() semantics

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/entry.S | 17 +----------------
 1 file changed, 1 insertion(+), 16 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 16e074f9e58..a7607832dd4 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -603,24 +603,9 @@ ret_from_kernel_thread:
 	mov	$9, $27
 	mov	$10, $16
 	jsr	$26, ($9)
-	ldgp	$gp, 0($26)
-	mov	$0, $16
-	mov	$31, $26
-	jmp	$31, sys_exit
-.end ret_from_kernel_thread
-
-	.globl	ret_from_kernel_execve
-	.align	4
-	.ent	ret_from_kernel_execve
-ret_from_kernel_execve:
-	mov	$16, $sp
-	/* Avoid the HAE being gratuitously wrong, to avoid restoring it.  */
-	ldq	$2, alpha_mv+HAE_CACHE
-	stq	$2, 152($sp)		/* HAE */
 	mov	$31, $19		/* to disable syscall restarts */
 	br	$31, ret_to_user
-
-.end	ret_from_kernel_execve
+.end ret_from_kernel_thread
 
 
 /*
-- 
cgit v1.2.3


From 91a27b2a756784714e924e5e854b919273082d26 Mon Sep 17 00:00:00 2001
From: Jeff Layton <jlayton@redhat.com>
Date: Wed, 10 Oct 2012 15:25:28 -0400
Subject: vfs: define struct filename and have getname() return it

getname() is intended to copy pathname strings from userspace into a
kernel buffer. The result is just a string in kernel space. It would
however be quite helpful to be able to attach some ancillary info to
the string.

For instance, we could attach some audit-related info to reduce the
amount of audit-related processing needed. When auditing is enabled,
we could also call getname() on the string more than once and not
need to recopy it from userspace.

This patchset converts the getname()/putname() interfaces to return
a struct instead of a string. For now, the struct just tracks the
string in kernel space and the original userland pointer for it.

Later, we'll add other information to the struct as it becomes
convenient.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/osf_sys.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 63e77e3944c..9eb090582cf 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -449,7 +449,7 @@ osf_ufs_mount(char *dirname, struct ufs_args __user *args, int flags)
 {
 	int retval;
 	struct cdfs_args tmp;
-	char *devname;
+	struct filename *devname;
 
 	retval = -EFAULT;
 	if (copy_from_user(&tmp, args, sizeof(tmp)))
@@ -458,7 +458,7 @@ osf_ufs_mount(char *dirname, struct ufs_args __user *args, int flags)
 	retval = PTR_ERR(devname);
 	if (IS_ERR(devname))
 		goto out;
-	retval = do_mount(devname, dirname, "ext2", flags, NULL);
+	retval = do_mount(devname->name, dirname, "ext2", flags, NULL);
 	putname(devname);
  out:
 	return retval;
@@ -469,7 +469,7 @@ osf_cdfs_mount(char *dirname, struct cdfs_args __user *args, int flags)
 {
 	int retval;
 	struct cdfs_args tmp;
-	char *devname;
+	struct filename *devname;
 
 	retval = -EFAULT;
 	if (copy_from_user(&tmp, args, sizeof(tmp)))
@@ -478,7 +478,7 @@ osf_cdfs_mount(char *dirname, struct cdfs_args __user *args, int flags)
 	retval = PTR_ERR(devname);
 	if (IS_ERR(devname))
 		goto out;
-	retval = do_mount(devname, dirname, "iso9660", flags, NULL);
+	retval = do_mount(devname->name, dirname, "iso9660", flags, NULL);
 	putname(devname);
  out:
 	return retval;
@@ -499,7 +499,7 @@ SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path,
 		int, flag, void __user *, data)
 {
 	int retval;
-	char *name;
+	struct filename *name;
 
 	name = getname(path);
 	retval = PTR_ERR(name);
@@ -507,13 +507,13 @@ SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path,
 		goto out;
 	switch (typenr) {
 	case 1:
-		retval = osf_ufs_mount(name, data, flag);
+		retval = osf_ufs_mount(name->name, data, flag);
 		break;
 	case 6:
-		retval = osf_cdfs_mount(name, data, flag);
+		retval = osf_cdfs_mount(name->name, data, flag);
 		break;
 	case 9:
-		retval = osf_procfs_mount(name, data, flag);
+		retval = osf_procfs_mount(name->name, data, flag);
 		break;
 	default:
 		retval = -EINVAL;
-- 
cgit v1.2.3


From a736427fa1103158338839813139b20763c7b13e Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 20 Oct 2012 21:39:44 -0400
Subject: missing const in alpha callers of do_mount()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/osf_sys.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 9eb090582cf..ac2ae13bd04 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -445,7 +445,7 @@ struct procfs_args {
  * unhappy with OSF UFS. [CHECKME]
  */
 static int
-osf_ufs_mount(char *dirname, struct ufs_args __user *args, int flags)
+osf_ufs_mount(const char *dirname, struct ufs_args __user *args, int flags)
 {
 	int retval;
 	struct cdfs_args tmp;
@@ -465,7 +465,7 @@ osf_ufs_mount(char *dirname, struct ufs_args __user *args, int flags)
 }
 
 static int
-osf_cdfs_mount(char *dirname, struct cdfs_args __user *args, int flags)
+osf_cdfs_mount(const char *dirname, struct cdfs_args __user *args, int flags)
 {
 	int retval;
 	struct cdfs_args tmp;
@@ -485,7 +485,7 @@ osf_cdfs_mount(char *dirname, struct cdfs_args __user *args, int flags)
 }
 
 static int
-osf_procfs_mount(char *dirname, struct procfs_args __user *args, int flags)
+osf_procfs_mount(const char *dirname, struct procfs_args __user *args, int flags)
 {
 	struct procfs_args tmp;
 
-- 
cgit v1.2.3


From 3185bd26188223195dc2e659a3d00219cad71a0f Mon Sep 17 00:00:00 2001
From: Al Viro <viro@ZenIV.linux.org.uk>
Date: Sat, 20 Oct 2012 15:52:23 +0100
Subject: alpha: separate thread-synchronous flags

... and fix the race in updating unaligned control ones

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/alpha/kernel/osf_sys.c | 25 ++++++++++---------------
 arch/alpha/kernel/process.c |  2 +-
 arch/alpha/kernel/traps.c   |  6 +++---
 3 files changed, 14 insertions(+), 19 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 9eb090582cf..1e6956a9060 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -793,8 +793,7 @@ SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer,
  	case GSI_UACPROC:
 		if (nbytes < sizeof(unsigned int))
 			return -EINVAL;
-		w = (current_thread_info()->flags >> ALPHA_UAC_SHIFT) &
-			UAC_BITMASK;
+		w = current_thread_info()->status & UAC_BITMASK;
 		if (put_user(w, (unsigned int __user *)buffer))
 			return -EFAULT;
  		return 1;
@@ -904,24 +903,20 @@ SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer,
 		break;
 
  	case SSI_NVPAIRS: {
-		unsigned long v, w, i;
-		unsigned int old, new;
+		unsigned __user *p = buffer;
+		unsigned i;
 		
- 		for (i = 0; i < nbytes; ++i) {
+		for (i = 0, p = buffer; i < nbytes; ++i, p += 2) {
+			unsigned v, w, status;
 
- 			if (get_user(v, 2*i + (unsigned int __user *)buffer))
- 				return -EFAULT;
- 			if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer))
+			if (get_user(v, p) || get_user(w, p + 1))
  				return -EFAULT;
  			switch (v) {
  			case SSIN_UACPROC:
-			again:
-				old = current_thread_info()->flags;
-				new = old & ~(UAC_BITMASK << ALPHA_UAC_SHIFT);
-				new = new | (w & UAC_BITMASK) << ALPHA_UAC_SHIFT;
-				if (cmpxchg(&current_thread_info()->flags,
-					    old, new) != old)
-					goto again;
+				w &= UAC_BITMASK;
+				status = current_thread_info()->status;
+				status = (status & ~UAC_BITMASK) | w;
+				current_thread_info()->status = status;
  				break;
  
  			default:
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 4054e0ffe2b..51987dcf79b 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -49,7 +49,7 @@ EXPORT_SYMBOL(pm_power_off);
 void
 cpu_idle(void)
 {
-	set_thread_flag(TIF_POLLING_NRFLAG);
+	current_thread_info()->status |= TS_POLLING;
 
 	while (1) {
 		/* FIXME -- EV6 and LCA45 know how to power down
diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
index 80d987c0e9a..272666d006d 100644
--- a/arch/alpha/kernel/traps.c
+++ b/arch/alpha/kernel/traps.c
@@ -780,17 +780,17 @@ do_entUnaUser(void __user * va, unsigned long opcode,
 	/* Check the UAC bits to decide what the user wants us to do
 	   with the unaliged access.  */
 
-	if (!test_thread_flag (TIF_UAC_NOPRINT)) {
+	if (!(current_thread_info()->status & TS_UAC_NOPRINT)) {
 		if (__ratelimit(&ratelimit)) {
 			printk("%s(%d): unaligned trap at %016lx: %p %lx %ld\n",
 			       current->comm, task_pid_nr(current),
 			       regs->pc - 4, va, opcode, reg);
 		}
 	}
-	if (test_thread_flag (TIF_UAC_SIGBUS))
+	if ((current_thread_info()->status & TS_UAC_SIGBUS))
 		goto give_sigbus;
 	/* Not sure why you'd want to use this, but... */
-	if (test_thread_flag (TIF_UAC_NOFIX))
+	if ((current_thread_info()->status & TS_UAC_NOFIX))
 		return;
 
 	/* Don't bother reading ds in the access check since we already
-- 
cgit v1.2.3


From 8166ea07cb89208f6beb9aa6aed554250f150cc8 Mon Sep 17 00:00:00 2001
From: Sasha Levin <sasha.levin@oracle.com>
Date: Thu, 8 Nov 2012 15:23:04 -0500
Subject: alpha: use BUG_ON where possible

Just use BUG_ON() instead of constructions such as:

	if (...)
		BUG()

A simplified version of the semantic patch that makes this transformation
is as follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e;
@@
- if (e) BUG();
+ BUG_ON(e);
// </smpl>

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---
 arch/alpha/kernel/pci_iommu.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c
index 3f844d26d2c..a21d0ab3b19 100644
--- a/arch/alpha/kernel/pci_iommu.c
+++ b/arch/alpha/kernel/pci_iommu.c
@@ -354,8 +354,7 @@ static dma_addr_t alpha_pci_map_page(struct device *dev, struct page *page,
 	struct pci_dev *pdev = alpha_gendev_to_pci(dev);
 	int dac_allowed;
 
-	if (dir == PCI_DMA_NONE)
-		BUG();
+	BUG_ON(dir == PCI_DMA_NONE);
 
 	dac_allowed = pdev ? pci_dac_dma_supported(pdev, pdev->dma_mask) : 0; 
 	return pci_map_single_1(pdev, (char *)page_address(page) + offset, 
@@ -378,8 +377,7 @@ static void alpha_pci_unmap_page(struct device *dev, dma_addr_t dma_addr,
 	struct pci_iommu_arena *arena;
 	long dma_ofs, npages;
 
-	if (dir == PCI_DMA_NONE)
-		BUG();
+	BUG_ON(dir == PCI_DMA_NONE);
 
 	if (dma_addr >= __direct_map_base
 	    && dma_addr < __direct_map_base + __direct_map_size) {
@@ -662,8 +660,7 @@ static int alpha_pci_map_sg(struct device *dev, struct scatterlist *sg,
 	dma_addr_t max_dma;
 	int dac_allowed;
 
-	if (dir == PCI_DMA_NONE)
-		BUG();
+	BUG_ON(dir == PCI_DMA_NONE);
 
 	dac_allowed = dev ? pci_dac_dma_supported(pdev, pdev->dma_mask) : 0;
 
@@ -742,8 +739,7 @@ static void alpha_pci_unmap_sg(struct device *dev, struct scatterlist *sg,
 	dma_addr_t max_dma;
 	dma_addr_t fbeg, fend;
 
-	if (dir == PCI_DMA_NONE)
-		BUG();
+	BUG_ON(dir == PCI_DMA_NONE);
 
 	if (! alpha_mv.mv_pci_tbi)
 		return;
-- 
cgit v1.2.3


From 191c5f10275cfbb36802edadbdb10c73537327b4 Mon Sep 17 00:00:00 2001
From: Jiri Slaby <jslaby@suse.cz>
Date: Thu, 15 Nov 2012 09:49:56 +0100
Subject: TTY: call tty_port_destroy in the rest of drivers

After commit "TTY: move tty buffers to tty_port", the tty buffers are
not freed in some drivers. This is because tty_port_destructor is not
called whenever a tty_port is freed. This was an assumption I counted
with but was unfortunately untrue. So fix the drivers to fulfil this
assumption.

To be sure, the TTY buffers (and later some stuff) are gone along with
the tty_port, we have to call tty_port_destroy at tear-down places.
This is mostly where the structure containing a tty_port is freed.
This patch does exactly that -- put tty_port_destroy at those places.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/alpha/kernel/srmcons.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/srmcons.c b/arch/alpha/kernel/srmcons.c
index 5d5865204a1..59b7bbad839 100644
--- a/arch/alpha/kernel/srmcons.c
+++ b/arch/alpha/kernel/srmcons.c
@@ -205,7 +205,6 @@ static const struct tty_operations srmcons_ops = {
 static int __init
 srmcons_init(void)
 {
-	tty_port_init(&srmcons_singleton.port);
 	setup_timer(&srmcons_singleton.timer, srmcons_receive_chars,
 			(unsigned long)&srmcons_singleton);
 	if (srm_is_registered_console) {
@@ -215,6 +214,9 @@ srmcons_init(void)
 		driver = alloc_tty_driver(MAX_SRM_CONSOLE_DEVICES);
 		if (!driver)
 			return -ENOMEM;
+
+		tty_port_init(&srmcons_singleton.port);
+
 		driver->driver_name = "srm";
 		driver->name = "srm";
 		driver->major = 0; 	/* dynamic */
@@ -227,6 +229,7 @@ srmcons_init(void)
 		err = tty_register_driver(driver);
 		if (err) {
 			put_tty_driver(driver);
+			tty_port_destroy(&srmcons_singleton.port);
 			return err;
 		}
 		srmcons_driver = driver;
-- 
cgit v1.2.3


From e0e431aa45416982eb3fddf34cedc72f1c3b3ce3 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 18 Oct 2012 01:11:58 -0400
Subject: alpha: simplify fork and friends

* no need to restore everything from switch_stack when we only need $26
* no need to pass current_pt_regs() manually, we can just as easily
calculate it in alpha_clone/alpha_vfork ($8 + constant)
* interpretation of zero usp as "use the parent's" is simpler in copy_thread();
let fork and vfork just pass 0.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/entry.S   | 17 +++++++----------
 arch/alpha/kernel/process.c | 16 +++++++---------
 2 files changed, 14 insertions(+), 19 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index a7607832dd4..cc6d34e9e2e 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -617,7 +617,6 @@ ret_from_kernel_thread:
 	.ent	sys_fork
 sys_fork:
 	.prologue 0
-	mov	$sp, $21
 	bsr	$1, do_switch_stack
 	bis	$31, SIGCHLD, $16
 	mov	$31, $17
@@ -625,7 +624,9 @@ sys_fork:
 	mov	$31, $19
 	mov	$31, $20
 	jsr	$26, alpha_clone
-	bsr	$1, undo_switch_stack
+fork_out:
+	ldq	$26, 56($sp)
+	lda	$sp, SWITCH_STACK_SIZE($sp)
 	ret
 .end sys_fork
 
@@ -634,12 +635,10 @@ sys_fork:
 	.ent	sys_clone
 sys_clone:
 	.prologue 0
-	mov	$sp, $21
 	bsr	$1, do_switch_stack
 	/* $16, $17, $18, $19, $20 come from the user.  */
-	jsr	$26, alpha_clone
-	bsr	$1, undo_switch_stack
-	ret
+	lda	$26, fork_out
+	jsr	$31, alpha_clone
 .end sys_clone
 
 	.align	4
@@ -647,11 +646,9 @@ sys_clone:
 	.ent	sys_vfork
 sys_vfork:
 	.prologue 0
-	mov	$sp, $16
 	bsr	$1, do_switch_stack
-	jsr	$26, alpha_vfork
-	bsr	$1, undo_switch_stack
-	ret
+	lda	$26, fork_out
+	jsr	$31, alpha_vfork
 .end sys_vfork
 
 	.align	4
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 51987dcf79b..ad86c099b6f 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -246,19 +246,17 @@ release_thread(struct task_struct *dead_task)
 int
 alpha_clone(unsigned long clone_flags, unsigned long usp,
 	    int __user *parent_tid, int __user *child_tid,
-	    unsigned long tls_value, struct pt_regs *regs)
+	    unsigned long tls_value)
 {
-	if (!usp)
-		usp = rdusp();
-
-	return do_fork(clone_flags, usp, regs, 0, parent_tid, child_tid);
+	return do_fork(clone_flags, usp, current_pt_regs(), 0,
+			parent_tid, child_tid);
 }
 
 int
-alpha_vfork(struct pt_regs *regs)
+alpha_vfork(void)
 {
-	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, rdusp(),
-		       regs, 0, NULL, NULL);
+	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0,
+		       current_pt_regs(), 0, NULL, NULL);
 }
 
 /*
@@ -301,7 +299,7 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
 	stack = ((struct switch_stack *) regs) - 1;
 	*childstack = *stack;
 	childstack->r26 = (unsigned long) ret_from_fork;
-	childti->pcb.usp = usp;
+	childti->pcb.usp = usp ?: rdusp();
 	childti->pcb.ksp = (unsigned long) childstack;
 	childti->pcb.flags = 1;	/* set FEN, clear everything else */
 
-- 
cgit v1.2.3


From b960f303448969c6cb76b4df9291e9e6213e2b9f Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 18 Oct 2012 01:43:27 -0400
Subject: alpha: don't pass useless arguments to do_{,rt_},sigreturn()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/entry.S  |  4 ----
 arch/alpha/kernel/signal.c | 16 ++++++++--------
 2 files changed, 8 insertions(+), 12 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index cc6d34e9e2e..c245de65c61 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -658,8 +658,6 @@ sys_sigreturn:
 	.prologue 0
 	lda	$9, ret_from_straced
 	cmpult	$26, $9, $9
-	mov	$sp, $17
-	lda	$18, -SWITCH_STACK_SIZE($sp)
 	lda	$sp, -SWITCH_STACK_SIZE($sp)
 	jsr	$26, do_sigreturn
 	bne	$9, 1f
@@ -675,8 +673,6 @@ sys_rt_sigreturn:
 	.prologue 0
 	lda	$9, ret_from_straced
 	cmpult	$26, $9, $9
-	mov	$sp, $17
-	lda	$18, -SWITCH_STACK_SIZE($sp)
 	lda	$sp, -SWITCH_STACK_SIZE($sp)
 	jsr	$26, do_rt_sigreturn
 	bne	$9, 1f
diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c
index 32575f85507..336393c9c11 100644
--- a/arch/alpha/kernel/signal.c
+++ b/arch/alpha/kernel/signal.c
@@ -160,10 +160,10 @@ extern char compile_time_assert
 #define INSN_CALLSYS		0x00000083
 
 static long
-restore_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
-		   struct switch_stack *sw)
+restore_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs)
 {
 	unsigned long usp;
+	struct switch_stack *sw = (struct switch_stack *)regs - 1;
 	long i, err = __get_user(regs->pc, &sc->sc_pc);
 
 	current_thread_info()->restart_block.fn = do_no_restart_syscall;
@@ -215,9 +215,9 @@ restore_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
    registers and transfer control from userland.  */
 
 asmlinkage void
-do_sigreturn(struct sigcontext __user *sc, struct pt_regs *regs,
-	     struct switch_stack *sw)
+do_sigreturn(struct sigcontext __user *sc)
 {
+	struct pt_regs *regs = current_pt_regs();
 	sigset_t set;
 
 	/* Verify that it's a good sigcontext before using it */
@@ -228,7 +228,7 @@ do_sigreturn(struct sigcontext __user *sc, struct pt_regs *regs,
 
 	set_current_blocked(&set);
 
-	if (restore_sigcontext(sc, regs, sw))
+	if (restore_sigcontext(sc, regs))
 		goto give_sigsegv;
 
 	/* Send SIGTRAP if we're single-stepping: */
@@ -249,9 +249,9 @@ give_sigsegv:
 }
 
 asmlinkage void
-do_rt_sigreturn(struct rt_sigframe __user *frame, struct pt_regs *regs,
-		struct switch_stack *sw)
+do_rt_sigreturn(struct rt_sigframe __user *frame)
 {
+	struct pt_regs *regs = current_pt_regs();
 	sigset_t set;
 
 	/* Verify that it's a good ucontext_t before using it */
@@ -262,7 +262,7 @@ do_rt_sigreturn(struct rt_sigframe __user *frame, struct pt_regs *regs,
 
 	set_current_blocked(&set);
 
-	if (restore_sigcontext(&frame->uc.uc_mcontext, regs, sw))
+	if (restore_sigcontext(&frame->uc.uc_mcontext, regs))
 		goto give_sigsegv;
 
 	/* Send SIGTRAP if we're single-stepping: */
-- 
cgit v1.2.3


From 25906730ec01be664534c9439d7cf5a373e8a4e4 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 21 Oct 2012 15:52:04 -0400
Subject: alpha: reorganize copy_process(), prepare to saner fork_idle()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/process.c | 35 ++++++++++++++---------------------
 1 file changed, 14 insertions(+), 21 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index ad86c099b6f..a4dc79ba030 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -266,18 +266,22 @@ alpha_vfork(void)
 int
 copy_thread(unsigned long clone_flags, unsigned long usp,
 	    unsigned long arg,
-	    struct task_struct * p, struct pt_regs * regs)
+	    struct task_struct *p, struct pt_regs *wontuse)
 {
 	extern void ret_from_fork(void);
 	extern void ret_from_kernel_thread(void);
 
 	struct thread_info *childti = task_thread_info(p);
 	struct pt_regs *childregs = task_pt_regs(p);
+	struct pt_regs *regs = current_pt_regs();
 	struct switch_stack *childstack, *stack;
 	unsigned long settls;
 
 	childstack = ((struct switch_stack *) childregs) - 1;
-	if (unlikely(!regs)) {
+	childti->pcb.ksp = (unsigned long) childstack;
+	childti->pcb.flags = 1;	/* set FEN, clear everything else */
+
+	if (unlikely(p->flags & PF_KTHREAD)) {
 		/* kernel thread */
 		memset(childstack, 0,
 			sizeof(struct switch_stack) + sizeof(struct pt_regs));
@@ -286,12 +290,17 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
 		childstack->r10 = arg;
 		childregs->hae = alpha_mv.hae_cache,
 		childti->pcb.usp = 0;
-		childti->pcb.ksp = (unsigned long) childstack;
-		childti->pcb.flags = 1;	/* set FEN, clear everything else */
 		return 0;
 	}
+	/* Note: if CLONE_SETTLS is not set, then we must inherit the
+	   value from the parent, which will have been set by the block
+	   copy in dup_task_struct.  This is non-intuitive, but is
+	   required for proper operation in the case of a threaded
+	   application calling fork.  */
+	if (clone_flags & CLONE_SETTLS)
+		childti->pcb.unique = regs->r20;
+	childti->pcb.usp = usp ?: rdusp();
 	*childregs = *regs;
-	settls = regs->r20;
 	childregs->r0 = 0;
 	childregs->r19 = 0;
 	childregs->r20 = 1;	/* OSF/1 has some strange fork() semantics.  */
@@ -299,22 +308,6 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
 	stack = ((struct switch_stack *) regs) - 1;
 	*childstack = *stack;
 	childstack->r26 = (unsigned long) ret_from_fork;
-	childti->pcb.usp = usp ?: rdusp();
-	childti->pcb.ksp = (unsigned long) childstack;
-	childti->pcb.flags = 1;	/* set FEN, clear everything else */
-
-	/* Set a new TLS for the child thread?  Peek back into the
-	   syscall arguments that we saved on syscall entry.  Oops,
-	   except we'd have clobbered it with the parent/child set
-	   of r20.  Read the saved copy.  */
-	/* Note: if CLONE_SETTLS is not set, then we must inherit the
-	   value from the parent, which will have been set by the block
-	   copy in dup_task_struct.  This is non-intuitive, but is
-	   required for proper operation in the case of a threaded
-	   application calling fork.  */
-	if (clone_flags & CLONE_SETTLS)
-		childti->pcb.unique = settls;
-
 	return 0;
 }
 
-- 
cgit v1.2.3


From 3c456bfc4ba66e9cda210da7bc4fb0ba9fcc6972 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 20 Oct 2012 21:53:31 -0400
Subject: get rid of pt_regs argument of search_binary_handler()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/binfmt_loader.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/binfmt_loader.c b/arch/alpha/kernel/binfmt_loader.c
index d1f474d1d44..54abbef5d07 100644
--- a/arch/alpha/kernel/binfmt_loader.c
+++ b/arch/alpha/kernel/binfmt_loader.c
@@ -37,7 +37,7 @@ static int load_binary(struct linux_binprm *bprm, struct pt_regs *regs)
 	retval = prepare_binprm(bprm);
 	if (retval < 0)
 		return retval;
-	return search_binary_handler(bprm,regs);
+	return search_binary_handler(bprm);
 }
 
 static struct linux_binfmt loader_format = {
-- 
cgit v1.2.3


From 71613c3b871c5a9f27cc48f124251bcd3aa23be1 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 20 Oct 2012 22:00:48 -0400
Subject: get rid of pt_regs argument of ->load_binary()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/binfmt_loader.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/binfmt_loader.c b/arch/alpha/kernel/binfmt_loader.c
index 54abbef5d07..9525660c93c 100644
--- a/arch/alpha/kernel/binfmt_loader.c
+++ b/arch/alpha/kernel/binfmt_loader.c
@@ -5,7 +5,7 @@
 #include <linux/binfmts.h>
 #include <linux/a.out.h>
 
-static int load_binary(struct linux_binprm *bprm, struct pt_regs *regs)
+static int load_binary(struct linux_binprm *bprm)
 {
 	struct exec *eh = (struct exec *)bprm->buf;
 	unsigned long loader;
-- 
cgit v1.2.3


From dfe09ae0e5fe40679af05b1ba810d469844c97b3 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 26 Oct 2012 09:54:47 -0400
Subject: alpha: switch to generic fork/vfork/clone

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/entry.S   | 42 +++++++++++-------------------------------
 arch/alpha/kernel/process.c | 25 -------------------------
 arch/alpha/kernel/systbls.S |  6 +++---
 3 files changed, 14 insertions(+), 59 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index c245de65c61..f62a994ef12 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -612,44 +612,24 @@ ret_from_kernel_thread:
  * Special system calls.  Most of these are special in that they either
  * have to play switch_stack games or in some way use the pt_regs struct.
  */
+
+.macro	fork_like name
 	.align	4
-	.globl	sys_fork
-	.ent	sys_fork
-sys_fork:
+	.globl	alpha_\name
+	.ent	alpha_\name
+alpha_\name:
 	.prologue 0
 	bsr	$1, do_switch_stack
-	bis	$31, SIGCHLD, $16
-	mov	$31, $17
-	mov	$31, $18
-	mov	$31, $19
-	mov	$31, $20
-	jsr	$26, alpha_clone
-fork_out:
+	jsr	$26, sys_\name
 	ldq	$26, 56($sp)
 	lda	$sp, SWITCH_STACK_SIZE($sp)
 	ret
-.end sys_fork
-
-	.align	4
-	.globl	sys_clone
-	.ent	sys_clone
-sys_clone:
-	.prologue 0
-	bsr	$1, do_switch_stack
-	/* $16, $17, $18, $19, $20 come from the user.  */
-	lda	$26, fork_out
-	jsr	$31, alpha_clone
-.end sys_clone
+.end	alpha_\name
+.endm
 
-	.align	4
-	.globl	sys_vfork
-	.ent	sys_vfork
-sys_vfork:
-	.prologue 0
-	bsr	$1, do_switch_stack
-	lda	$26, fork_out
-	jsr	$31, alpha_vfork
-.end sys_vfork
+fork_like fork
+fork_like vfork
+fork_like clone
 
 	.align	4
 	.globl	sys_sigreturn
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index a4dc79ba030..e9705bcc96f 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -234,31 +234,6 @@ release_thread(struct task_struct *dead_task)
 {
 }
 
-/*
- * "alpha_clone()".. By the time we get here, the
- * non-volatile registers have also been saved on the
- * stack. We do some ugly pointer stuff here.. (see
- * also copy_thread)
- *
- * Notice that "fork()" is implemented in terms of clone,
- * with parameters (SIGCHLD, 0).
- */
-int
-alpha_clone(unsigned long clone_flags, unsigned long usp,
-	    int __user *parent_tid, int __user *child_tid,
-	    unsigned long tls_value)
-{
-	return do_fork(clone_flags, usp, current_pt_regs(), 0,
-			parent_tid, child_tid);
-}
-
-int
-alpha_vfork(void)
-{
-	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0,
-		       current_pt_regs(), 0, NULL, NULL);
-}
-
 /*
  * Copy an alpha thread..
  */
diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
index 2ac6b45c3e0..4284ec798ec 100644
--- a/arch/alpha/kernel/systbls.S
+++ b/arch/alpha/kernel/systbls.S
@@ -12,7 +12,7 @@
 sys_call_table:
 	.quad alpha_ni_syscall			/* 0 */
 	.quad sys_exit
-	.quad sys_fork
+	.quad alpha_fork
 	.quad sys_read
 	.quad sys_write
 	.quad alpha_ni_syscall			/* 5 */
@@ -76,7 +76,7 @@ sys_call_table:
 	.quad sys_getpgrp
 	.quad sys_getpagesize
 	.quad alpha_ni_syscall			/* 65 */
-	.quad sys_vfork
+	.quad alpha_vfork
 	.quad sys_newstat
 	.quad sys_newlstat
 	.quad alpha_ni_syscall
@@ -330,7 +330,7 @@ sys_call_table:
 	.quad sys_ni_syscall			/* 309: old get_kernel_syms */
 	.quad sys_syslog			/* 310 */
 	.quad sys_reboot
-	.quad sys_clone
+	.quad alpha_clone
 	.quad sys_uselib
 	.quad sys_mlock
 	.quad sys_munlock			/* 315 */
-- 
cgit v1.2.3


From afa86fc426ff7e7f5477f15da9c405d08d5cf790 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 22 Oct 2012 22:51:14 -0400
Subject: flagday: don't pass regs to copy_thread()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/process.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index e9705bcc96f..b5d0d092369 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -241,7 +241,7 @@ release_thread(struct task_struct *dead_task)
 int
 copy_thread(unsigned long clone_flags, unsigned long usp,
 	    unsigned long arg,
-	    struct task_struct *p, struct pt_regs *wontuse)
+	    struct task_struct *p)
 {
 	extern void ret_from_fork(void);
 	extern void ret_from_kernel_thread(void);
-- 
cgit v1.2.3


From 50ececcfa7d1acee085b2c518cad495062db6379 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 14 Dec 2012 15:25:43 -0500
Subject: alpha: switch to generic sigaltstack

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/signal.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c
index 336393c9c11..02d02c047f1 100644
--- a/arch/alpha/kernel/signal.c
+++ b/arch/alpha/kernel/signal.c
@@ -122,12 +122,6 @@ SYSCALL_DEFINE1(sigsuspend, old_sigset_t, mask)
 	return sigsuspend(&blocked);
 }
 
-asmlinkage int
-sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)
-{
-	return do_sigaltstack(uss, uoss, rdusp());
-}
-
 /*
  * Do a signal return; undo the signal stack.
  */
@@ -418,9 +412,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	err |= __put_user(0, &frame->uc.uc_flags);
 	err |= __put_user(0, &frame->uc.uc_link);
 	err |= __put_user(set->sig[0], &frame->uc.uc_osf_sigmask);
-	err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
-	err |= __put_user(sas_ss_flags(oldsp), &frame->uc.uc_stack.ss_flags);
-	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+	err |= __save_altstack(&frame->uc.uc_stack, oldsp);
 	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, 
 				set->sig[0], oldsp);
 	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
-- 
cgit v1.2.3


From f8d6c8d98d9ea7afef1e0d93d756a2dca879d1ea Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Fri, 21 Dec 2012 14:05:55 -0800
Subject: ALPHA: drivers: remove __dev* attributes.

CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitdata,
and __devexit from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/alpha/kernel/pci.c       | 12 +++++-------
 arch/alpha/kernel/smp.c       |  6 +++---
 arch/alpha/kernel/sys_titan.c |  2 +-
 3 files changed, 9 insertions(+), 11 deletions(-)

(limited to 'arch/alpha/kernel')

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index ef757147cbf..edb4e0097b7 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -59,13 +59,13 @@ struct pci_controller *pci_isa_hose;
  * Quirks.
  */
 
-static void __devinit quirk_isa_bridge(struct pci_dev *dev)
+static void quirk_isa_bridge(struct pci_dev *dev)
 {
 	dev->class = PCI_CLASS_BRIDGE_ISA << 8;
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82378, quirk_isa_bridge);
 
-static void __devinit quirk_cypress(struct pci_dev *dev)
+static void quirk_cypress(struct pci_dev *dev)
 {
 	/* The Notorious Cy82C693 chip.  */
 
@@ -104,7 +104,7 @@ static void __devinit quirk_cypress(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CONTAQ, PCI_DEVICE_ID_CONTAQ_82C693, quirk_cypress);
 
 /* Called for each device after PCI setup is done. */
-static void __devinit pcibios_fixup_final(struct pci_dev *dev)
+static void pcibios_fixup_final(struct pci_dev *dev)
 {
 	unsigned int class = dev->class >> 8;
 
@@ -198,8 +198,7 @@ subsys_initcall(pcibios_init);
 #ifdef ALPHA_RESTORE_SRM_SETUP
 static struct pdev_srm_saved_conf *srm_saved_configs;
 
-void __devinit
-pdev_save_srm_config(struct pci_dev *dev)
+void pdev_save_srm_config(struct pci_dev *dev)
 {
 	struct pdev_srm_saved_conf *tmp;
 	static int printed = 0;
@@ -241,8 +240,7 @@ pci_restore_srm_config(void)
 }
 #endif
 
-void __devinit
-pcibios_fixup_bus(struct pci_bus *bus)
+void pcibios_fixup_bus(struct pci_bus *bus)
 {
 	struct pci_dev *dev = bus->self;
 
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index a41ad90a97a..9603bc234b4 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -68,7 +68,7 @@ enum ipi_message_type {
 };
 
 /* Set to a secondary's cpuid when it comes online.  */
-static int smp_secondary_alive __devinitdata = 0;
+static int smp_secondary_alive = 0;
 
 int smp_num_probed;		/* Internal processor count */
 int smp_num_cpus = 1;		/* Number that came online.  */
@@ -172,7 +172,7 @@ smp_callin(void)
 }
 
 /* Wait until hwrpb->txrdy is clear for cpu.  Return -1 on timeout.  */
-static int __devinit
+static int
 wait_for_txrdy (unsigned long cpumask)
 {
 	unsigned long timeout;
@@ -468,7 +468,7 @@ smp_prepare_cpus(unsigned int max_cpus)
 	smp_num_cpus = smp_num_probed;
 }
 
-void __devinit
+void
 smp_prepare_boot_cpu(void)
 {
 }
diff --git a/arch/alpha/kernel/sys_titan.c b/arch/alpha/kernel/sys_titan.c
index 2533db280d9..5cf4a481b8c 100644
--- a/arch/alpha/kernel/sys_titan.c
+++ b/arch/alpha/kernel/sys_titan.c
@@ -303,7 +303,7 @@ titan_late_init(void)
 
 }
 
-static int __devinit
+static int
 titan_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	u8 intline;
-- 
cgit v1.2.3