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ftrace: trace scheduler rbtree

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Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ingo Molnar 2008-05-12 21:20:52 +02:00 committed by Thomas Gleixner
parent 1a3c303433
commit 4ac3ba41d3
3 changed files with 6 additions and 2 deletions
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1
kernel/trace/trace.c
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@ -129,6 +129,7 @@ static const char *trace_options[] = {
"bin", "bin",
"block", "block",
"stacktrace", "stacktrace",
"sched-tree",
NULL NULL
}; };

1
kernel/trace/trace.h
View File

@ -286,6 +286,7 @@ enum trace_iterator_flags {
TRACE_ITER_BIN = 0x40, TRACE_ITER_BIN = 0x40,
TRACE_ITER_BLOCK = 0x80, TRACE_ITER_BLOCK = 0x80,
TRACE_ITER_STACKTRACE = 0x100, TRACE_ITER_STACKTRACE = 0x100,
TRACE_ITER_SCHED_TREE = 0x200,
}; };
#endif /* _LINUX_KERNEL_TRACE_H */ #endif /* _LINUX_KERNEL_TRACE_H */

6
kernel/trace/trace_sched_switch.c
View File

@ -36,7 +36,8 @@ ctx_switch_func(void *__rq, struct task_struct *prev, struct task_struct *next)
if (likely(disabled == 1)) { if (likely(disabled == 1)) {
tracing_sched_switch_trace(tr, data, prev, next, flags); 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); atomic_dec(&data->disabled);
@ -62,7 +63,8 @@ wakeup_func(void *__rq, struct task_struct *wakee, struct task_struct *curr)
if (likely(disabled == 1)) { if (likely(disabled == 1)) {
tracing_sched_wakeup_trace(tr, data, wakee, curr, flags); 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); atomic_dec(&data->disabled);