[PATCH 01/21] perf_events: Export buffer handling functions
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From: Borislav Petkov on 1 Jul 2010 12:00 From: Borislav Petkov <borislav.petkov(a)amd.com> .... for other in-kernel users. Signed-off-by: Borislav Petkov <borislav.petkov(a)amd.com> --- include/linux/perf_event.h | 8 ++++++++ kernel/perf_event.c | 8 ++++---- 2 files changed, 12 insertions(+), 4 deletions(-) diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 63b5aa5..cb242bd 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -1017,6 +1017,10 @@ extern int perf_swevent_get_recursion_context(void); extern void perf_swevent_put_recursion_context(int rctx); extern void perf_event_enable(struct perf_event *event); extern void perf_event_disable(struct perf_event *event); +extern struct perf_buffer * +perf_buffer_alloc(int nr_pages, long watermark, int cpu, int flags); +extern void perf_buffer_put(struct perf_buffer *buffer); + #else static inline void perf_event_task_sched_in(struct task_struct *task) { } @@ -1054,6 +1058,10 @@ static inline int perf_swevent_get_recursion_context(void) { return -1; } static inline void perf_swevent_put_recursion_context(int rctx) { } static inline void perf_event_enable(struct perf_event *event) { } static inline void perf_event_disable(struct perf_event *event) { } +extern struct perf_buffer * +perf_buffer_alloc(int nr_pages, long watermark, int cpu, int flags) { return NULL; } +static inline void perf_buffer_put(struct perf_buffer *buffer) {} + #endif #define perf_output_put(handle, x) \ diff --git a/kernel/perf_event.c b/kernel/perf_event.c index c772a3d..40478af 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -1881,7 +1881,7 @@ static void free_event_rcu(struct rcu_head *head) } static void perf_pending_sync(struct perf_event *event); -static void perf_buffer_put(struct perf_buffer *buffer); +void perf_buffer_put(struct perf_buffer *buffer); static void free_event(struct perf_event *event) { @@ -2424,7 +2424,7 @@ static void *perf_mmap_alloc_page(int cpu) return page_address(page); } -static struct perf_buffer * +struct perf_buffer * perf_buffer_alloc(int nr_pages, long watermark, int cpu, int flags) { struct perf_buffer *buffer; @@ -2541,7 +2541,7 @@ static void perf_buffer_free(struct perf_buffer *buffer) schedule_work(&buffer->work); } -static struct perf_buffer * +struct perf_buffer * perf_buffer_alloc(int nr_pages, long watermark, int cpu, int flags) { struct perf_buffer *buffer; @@ -2642,7 +2642,7 @@ static struct perf_buffer *perf_buffer_get(struct perf_event *event) return buffer; } -static void perf_buffer_put(struct perf_buffer *buffer) +void perf_buffer_put(struct perf_buffer *buffer) { if (!atomic_dec_and_test(&buffer->refcount)) return; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |