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authorSteven Rostedt <srostedt@redhat.com>2009-04-10 09:36:00 -0400
committerSteven Rostedt <rostedt@goodmis.org>2009-04-14 12:57:28 -0400
commita8d154b009168337494fbf345671bab74d3e4b8b (patch)
tree4097612e1a5cc8bf7658542f7d0f51b815113eaf /kernel/softirq.c
parentea20d9293ce423a39717ed4375393129a2e701f9 (diff)
tracing: create automated trace defines
This patch lowers the number of places a developer must modify to add new tracepoints. The current method to add a new tracepoint into an existing system is to write the trace point macro in the trace header with one of the macros TRACE_EVENT, TRACE_FORMAT or DECLARE_TRACE, then they must add the same named item into the C file with the macro DEFINE_TRACE(name) and then add the trace point. This change cuts out the needing to add the DEFINE_TRACE(name). Every file that uses the tracepoint must still include the trace/<type>.h file, but the one C file must also add a define before the including of that file. #define CREATE_TRACE_POINTS #include <trace/mytrace.h> This will cause the trace/mytrace.h file to also produce the C code necessary to implement the trace point. Note, if more than one trace/<type>.h is used to create the C code it is best to list them all together. #define CREATE_TRACE_POINTS #include <trace/foo.h> #include <trace/bar.h> #include <trace/fido.h> Thanks to Mathieu Desnoyers and Christoph Hellwig for coming up with the cleaner solution of the define above the includes over my first design to have the C code include a "special" header. This patch converts sched, irq and lockdep and skb to use this new method. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Zhao Lei <zhaolei@cn.fujitsu.com> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/softirq.c')
-rw-r--r--kernel/softirq.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 2fecefacdc5..a2d9b458ac2 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -186,9 +186,6 @@ EXPORT_SYMBOL(local_bh_enable_ip);
*/
#define MAX_SOFTIRQ_RESTART 10
-DEFINE_TRACE(softirq_entry);
-DEFINE_TRACE(softirq_exit);
-
asmlinkage void __do_softirq(void)
{
struct softirq_action *h;