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authorStephen Boyd <sboyd@codeaurora.org>2012-05-29 15:07:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-29 16:22:33 -0700
commitfd0a37355c4d39affa39d5cd75168fb94b292318 (patch)
tree66bdbffce2ce960ff4566ed9dd6bd0e5e6f0eee2 /lib
parent4796dd200db943e36f876e7029552212e5bbdf33 (diff)
spinlock_debug: print kallsyms name for lock
When a spinlock warning is printed we usually get BUG: spinlock bad magic on CPU#0, modprobe/111 lock: 0xdff09f38, .magic: 00000000, .owner: /0, .owner_cpu: 0 but it's nicer to print the symbol for the lock if we have it so that we can avoid 'grep dff09f38 /proc/kallsyms' to find out which lock it was. Use kallsyms to print the symbol name so we get something a bit easier to read BUG: spinlock bad magic on CPU#0, modprobe/112 lock: test_lock, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 If the lock is not in kallsyms %ps will fall back to printing the address directly. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/spinlock_debug.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/spinlock_debug.c b/lib/spinlock_debug.c
index 525d160d44f..d0ec4f3d159 100644
--- a/lib/spinlock_debug.c
+++ b/lib/spinlock_debug.c
@@ -58,7 +58,7 @@ static void spin_dump(raw_spinlock_t *lock, const char *msg)
printk(KERN_EMERG "BUG: spinlock %s on CPU#%d, %s/%d\n",
msg, raw_smp_processor_id(),
current->comm, task_pid_nr(current));
- printk(KERN_EMERG " lock: %p, .magic: %08x, .owner: %s/%d, "
+ printk(KERN_EMERG " lock: %ps, .magic: %08x, .owner: %s/%d, "
".owner_cpu: %d\n",
lock, lock->magic,
owner ? owner->comm : "<none>",