[tip:perf/core] perf record: Use struct perf_mmap and helpers

From: tip-bot for Arnaldo Carvalho de Melo
Date: Wed Jan 26 2011 - 02:17:12 EST

Commit-ID: 744bd8aa3c8b43447f689a27872fa95e700b8a4f
Gitweb: http://git.kernel.org/tip/744bd8aa3c8b43447f689a27872fa95e700b8a4f
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Wed, 12 Jan 2011 17:07:28 -0200
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Sat, 22 Jan 2011 19:56:29 -0200

perf record: Use struct perf_mmap and helpers

Paving the way to using perf_evsel->mmap, do this to reduce the patch
noise in the next ones.

Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Cc: Tom Zanussi <tzanussi@xxxxxxxxx>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
tools/perf/builtin-record.c | 25 ++++---------------------
1 files changed, 4 insertions(+), 21 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index ec43f2e..d89e2f1 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -78,26 +78,9 @@ static off_t post_processing_offset;
static struct perf_session *session;
static const char *cpu_list;

-struct mmap_data {
- void *base;
- unsigned int mask;
- unsigned int prev;
-static struct mmap_data mmap_array[MAX_NR_CPUS];
-static unsigned long mmap_read_head(struct mmap_data *md)
- struct perf_event_mmap_page *pc = md->base;
- long head;
- head = pc->data_head;
- rmb();
- return head;
+static struct perf_mmap mmap_array[MAX_NR_CPUS];

-static void mmap_write_tail(struct mmap_data *md, unsigned long tail)
+static void mmap_write_tail(struct perf_mmap *md, unsigned long tail)
struct perf_event_mmap_page *pc = md->base;

@@ -136,9 +119,9 @@ static int process_synthesized_event(event_t *event,
return 0;

-static void mmap_read(struct mmap_data *md)
+static void mmap_read(struct perf_mmap *md)
- unsigned int head = mmap_read_head(md);
+ unsigned int head = perf_mmap__read_head(md);
unsigned int old = md->prev;
unsigned char *data = md->base + page_size;
unsigned long size;
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