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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2010-05-19 10:52:27 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-05-21 11:37:56 +0200 |
| commit | b7e2ecef92d2e7785e6d76b41e5ba8bcbc45259d (patch) | |
| tree | 341c3a03743108bbdf82ee0eed9f4c4085f1b694 /include/linux/ftrace_event.h | |
| parent | 1c34bde13a3cdcd4c7c6322f8052e67c2c91caf1 (diff) | |
| download | lwn-b7e2ecef92d2e7785e6d76b41e5ba8bcbc45259d.tar.gz lwn-b7e2ecef92d2e7785e6d76b41e5ba8bcbc45259d.zip | |
perf, trace: Optimize tracepoints by removing IRQ-disable from perf/tracepoint interaction
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>
Diffstat (limited to 'include/linux/ftrace_event.h')
| -rw-r--r-- | include/linux/ftrace_event.h | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index a9775dd7f7fe..126071bc90ab 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -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 |