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Commit 744bd8aa authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

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@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 70082dd9

tools/perf/builtin-record.c

+4 −21
Original line number Diff line number Diff line
@@ -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;