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-rw-r--r--tools/perf/builtin-record.c13
-rw-r--r--tools/perf/perf.h12
2 files changed, 13 insertions, 12 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index d89e2f1..109f3b2 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -80,17 +80,6 @@ static const char *cpu_list;
static struct perf_mmap mmap_array[MAX_NR_CPUS];
-static void mmap_write_tail(struct perf_mmap *md, unsigned long tail)
-{
- struct perf_event_mmap_page *pc = md->base;
-
- /*
- * ensure all reads are done before we write the tail out.
- */
- /* mb(); */
- pc->data_tail = tail;
-}
-
static void advance_output(size_t size)
{
bytes_written += size;
@@ -165,7 +154,7 @@ static void mmap_read(struct perf_mmap *md)
write_output(buf, size);
md->prev = old;
- mmap_write_tail(md, old);
+ perf_mmap__write_tail(md, old);
}
static volatile int done = 0;
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 5fb5e1f..a5fc660 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -108,6 +108,18 @@ static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
return head;
}
+static inline void perf_mmap__write_tail(struct perf_mmap *md,
+ unsigned long tail)
+{
+ struct perf_event_mmap_page *pc = md->base;
+
+ /*
+ * ensure all reads are done before we write the tail out.
+ */
+ /* mb(); */
+ pc->data_tail = tail;
+}
+
/*
* prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
* counters in the current task.
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