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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2010-05-18 20:08:32 +0400
committerIngo Molnar <mingo@elte.hu>2010-05-18 20:35:46 +0400
commit4f41c013f553957765902fb01475972f0af3e8e7 (patch)
treeddaa54947cc990094a4b270f2f8b3d6da195044f /include/linux/ftrace_event.h
parentef4f30f54e265c2f6f9ac9eda4db158a4e16050b (diff)
downloadlinux-4f41c013f553957765902fb01475972f0af3e8e7.tar.xz
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.h8
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);
}