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authorMathieu Desnoyers <mathieu.desnoyers@polymtl.ca>2008-11-14 23:47:47 +0100
committerIngo Molnar <mingo@elte.hu>2008-11-16 09:01:36 +0100
commit7e066fb870fcd1025ec3ba7bbde5d541094f4ce1 (patch)
tree52acda06de25c029b9834110d7bf6b4abc50353b /kernel/fork.c
parenttracepoints: use modules notifiers (diff)
downloadlinux-7e066fb870fcd1025ec3ba7bbde5d541094f4ce1.tar.xz
linux-7e066fb870fcd1025ec3ba7bbde5d541094f4ce1.zip
tracepoints: add DECLARE_TRACE() and DEFINE_TRACE()
Impact: API *CHANGE*. Must update all tracepoint users. Add DEFINE_TRACE() to tracepoints to let them declare the tracepoint structure in a single spot for all the kernel. It helps reducing memory consumption, especially when declaring a lot of tracepoints, e.g. for kmalloc tracing. *API CHANGE WARNING*: now, DECLARE_TRACE() must be used in headers for tracepoint declarations rather than DEFINE_TRACE(). This is the sane way to do it. The name previously used was misleading. Updates scheduler instrumentation to follow this API change. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/fork.c')
-rw-r--r--kernel/fork.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index f6083561dfe0..0837d0deee5f 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -79,6 +79,8 @@ DEFINE_PER_CPU(unsigned long, process_counts) = 0;
__cacheline_aligned DEFINE_RWLOCK(tasklist_lock); /* outer */
+DEFINE_TRACE(sched_process_fork);
+
int nr_processes(void)
{
int cpu;