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perf, trace: Inline perf_swevent_put_recursion_context()

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Inline perf_swevent_put_recursion_context into perf_tp_event(), this
shrinks the per trace template code footprint and saves a function
call.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2010-05-21 15:11:34 +02:00 committed by Ingo Molnar
parent e768aee89c
commit ecc55f84b2
3 changed files with 6 additions and 7 deletions
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3
include/linux/ftrace_event.h
View File

@ -257,8 +257,7 @@ static inline void
perf_trace_buf_submit(void *raw_data, int size, int rctx, u64 addr,
u64 count, struct pt_regs *regs, void *head)
{
perf_tp_event(addr, count, raw_data, size, regs, head);
perf_swevent_put_recursion_context(rctx);
perf_tp_event(addr, count, raw_data, size, regs, head, rctx);
}
#endif

2
include/linux/perf_event.h
View File

@ -1001,7 +1001,7 @@ static inline bool perf_paranoid_kernel(void)
extern void perf_event_init(void);
extern void perf_tp_event(u64 addr, u64 count, void *record,
int entry_size, struct pt_regs *regs,
struct hlist_head *head);
struct hlist_head *head, int rctx);
extern void perf_bp_event(struct perf_event *event, void *data);
#ifndef perf_misc_flags

8
kernel/perf_event.c
View File

@ -4213,14 +4213,12 @@ int perf_swevent_get_recursion_context(void)
}
EXPORT_SYMBOL_GPL(perf_swevent_get_recursion_context);
void perf_swevent_put_recursion_context(int rctx)
void inline perf_swevent_put_recursion_context(int rctx)
{
struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
barrier();
cpuctx->recursion[rctx]--;
}
EXPORT_SYMBOL_GPL(perf_swevent_put_recursion_context);
void __perf_sw_event(u32 event_id, u64 nr, int nmi,
struct pt_regs *regs, u64 addr)
@ -4601,7 +4599,7 @@ static int perf_tp_event_match(struct perf_event *event,
}
void perf_tp_event(u64 addr, u64 count, void *record, int entry_size,
struct pt_regs *regs, struct hlist_head *head)
struct pt_regs *regs, struct hlist_head *head, int rctx)
{
struct perf_sample_data data;
struct perf_event *event;
@ -4621,6 +4619,8 @@ void perf_tp_event(u64 addr, u64 count, void *record, int entry_size,
perf_swevent_add(event, count, 1, &data, regs);
}
rcu_read_unlock();
perf_swevent_put_recursion_context(rctx);
}
EXPORT_SYMBOL_GPL(perf_tp_event);