diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-05-12 21:20:52 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-23 21:07:31 +0200 |
| commit | 4ac3ba41d372e3a9e420b36bc43589662b188a14 (patch) | |
| tree | b8dd93a0226a92b5f55e5ff1e51712424a7be729 | |
| parent | 1a3c3034336320554a3342572dae98d69e054fc7 (diff) | |
ftrace: trace scheduler rbtree
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | kernel/trace/trace.c | 1 | ||||
| -rw-r--r-- | kernel/trace/trace.h | 1 | ||||
| -rw-r--r-- | kernel/trace/trace_sched_switch.c | 6 |
3 files changed, 6 insertions, 2 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 65d2c0a61ed..06380dc1ebe 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -129,6 +129,7 @@ static const char *trace_options[] = { "bin", "block", "stacktrace", + "sched-tree", NULL }; diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 75e23747567..a52015702a2 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -286,6 +286,7 @@ enum trace_iterator_flags { TRACE_ITER_BIN = 0x40, TRACE_ITER_BLOCK = 0x80, TRACE_ITER_STACKTRACE = 0x100, + TRACE_ITER_SCHED_TREE = 0x200, }; #endif /* _LINUX_KERNEL_TRACE_H */ diff --git a/kernel/trace/trace_sched_switch.c b/kernel/trace/trace_sched_switch.c index 12658b3f2b2..5555b906a66 100644 --- a/kernel/trace/trace_sched_switch.c +++ b/kernel/trace/trace_sched_switch.c @@ -36,7 +36,8 @@ ctx_switch_func(void *__rq, struct task_struct *prev, struct task_struct *next) if (likely(disabled == 1)) { tracing_sched_switch_trace(tr, data, prev, next, flags); - ftrace_all_fair_tasks(__rq, tr, data); + if (trace_flags & TRACE_ITER_SCHED_TREE) + ftrace_all_fair_tasks(__rq, tr, data); } atomic_dec(&data->disabled); @@ -62,7 +63,8 @@ wakeup_func(void *__rq, struct task_struct *wakee, struct task_struct *curr) if (likely(disabled == 1)) { tracing_sched_wakeup_trace(tr, data, wakee, curr, flags); - ftrace_all_fair_tasks(__rq, tr, data); + if (trace_flags & TRACE_ITER_SCHED_TREE) + ftrace_all_fair_tasks(__rq, tr, data); } atomic_dec(&data->disabled); |