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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2010-05-18 18:08:32 +0200
committerIngo Molnar <mingo@elte.hu>2010-05-18 18:35:46 +0200
commit4f41c013f553957765902fb01475972f0af3e8e7 (patch)
treeddaa54947cc990094a4b270f2f8b3d6da195044f /include
parentef4f30f54e265c2f6f9ac9eda4db158a4e16050b (diff)
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')
-rw-r--r--include/linux/ftrace_event.h8
-rw-r--r--include/linux/perf_event.h2
-rw-r--r--include/trace/ftrace.h3
3 files changed, 8 insertions, 5 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);
}
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 3fd5c82e0e18..0b521fc8f5b0 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -994,7 +994,7 @@ static inline bool perf_paranoid_kernel(void)
extern void perf_event_init(void);
extern void perf_tp_event(int event_id, u64 addr, u64 count, void *record,
- int entry_size, struct pt_regs *regs);
+ int entry_size, struct pt_regs *regs, void *event);
extern void perf_bp_event(struct perf_event *event, void *data);
#ifndef perf_misc_flags
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 882c64832ffe..0a29df092922 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -785,7 +785,8 @@ perf_trace_templ_##call(struct ftrace_event_call *event_call, \
{ assign; } \
\
perf_trace_buf_submit(entry, __entry_size, rctx, __addr, \
- __count, irq_flags, __regs); \
+ __count, irq_flags, __regs, \
+ event_call->perf_data); \
}
#undef DEFINE_EVENT