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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2010-05-18 18:08:32 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-05-18 18:35:46 +0200 |
| commit | 4f41c013f553957765902fb01475972f0af3e8e7 (patch) | |
| tree | ddaa54947cc990094a4b270f2f8b3d6da195044f /include/linux/ftrace_event.h | |
| parent | ef4f30f54e265c2f6f9ac9eda4db158a4e16050b (diff) | |
| download | linux-stable-4f41c013f553957765902fb01475972f0af3e8e7.tar.gz linux-stable-4f41c013f553957765902fb01475972f0af3e8e7.tar.bz2 linux-stable-4f41c013f553957765902fb01475972f0af3e8e7.zip | |
perf/ftrace: Optimize perf/tracepoint interaction for single events
When we've got but a single event per tracepoint
there is no reason to try and multiplex it so don't.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Tested-by: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/ftrace_event.h')
| -rw-r--r-- | include/linux/ftrace_event.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index c0f4b364c711..c8091001b943 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -132,6 +132,7 @@ struct ftrace_event_call { void *data; int perf_refcount; + void *perf_data; int (*perf_event_enable)(struct ftrace_event_call *); void (*perf_event_disable)(struct ftrace_event_call *); }; @@ -190,7 +191,7 @@ struct perf_event; DECLARE_PER_CPU(struct pt_regs, perf_trace_regs); -extern int perf_trace_enable(int event_id); +extern int perf_trace_enable(int event_id, void *data); extern void perf_trace_disable(int event_id); extern int ftrace_profile_set_filter(struct perf_event *event, int event_id, char *filter_str); @@ -201,11 +202,12 @@ perf_trace_buf_prepare(int size, unsigned short type, int *rctxp, static inline void perf_trace_buf_submit(void *raw_data, int size, int rctx, u64 addr, - u64 count, unsigned long irq_flags, struct pt_regs *regs) + u64 count, unsigned long irq_flags, struct pt_regs *regs, + void *event) { struct trace_entry *entry = raw_data; - perf_tp_event(entry->type, addr, count, raw_data, size, regs); + perf_tp_event(entry->type, addr, count, raw_data, size, regs, event); perf_swevent_put_recursion_context(rctx); local_irq_restore(irq_flags); } |