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perf, trace: Optimize tracepoints by removing IRQ-disable from perf/tracepoint interaction

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Improves performance.

Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <1274259525.5605.10352.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2010-05-19 10:52:27 +02:00
committed by Ingo Molnar
parent 1c34bde13a
commit b7e2ecef92
5 changed files with 48 additions and 73 deletions
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9
include/linux/ftrace_event.h
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@@ -197,20 +197,17 @@ extern void perf_trace_disable(int event_id);
extern int ftrace_profile_set_filter(struct perf_event *event, int event_id,
char *filter_str);
extern void ftrace_profile_free_filter(struct perf_event *event);
extern void *
perf_trace_buf_prepare(int size, unsigned short type, int *rctxp,
unsigned long *irq_flags);
extern void *perf_trace_buf_prepare(int size, unsigned short type,
struct pt_regs *regs, 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,
void *event)
u64 count, struct pt_regs *regs, void *event)
{
struct trace_entry *entry = raw_data;
perf_tp_event(entry->type, addr, count, raw_data, size, regs, event);
perf_swevent_put_recursion_context(rctx);
local_irq_restore(irq_flags);
}
#endif