linux-kernel - [tip:perf/core] perf trace: Switch to new perf_mmap__read

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Message-ID: <tip-d7f55c62e63461c4071afe8730851e406935d960@git.kernel.org>
Date:   Mon, 5 Mar 2018 22:47:32 -0800
From:   tip-bot for Kan Liang <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, hpa@...or.com, tglx@...utronix.de,
        acme@...hat.com, wangnan0@...wei.com, jolsa@...hat.com,
        namhyung@...nel.org, ak@...ux.intel.com, mingo@...nel.org,
        kan.liang@...ux.intel.com
Subject: [tip:perf/core] perf trace: Switch to new perf_mmap__read_event()
 interface

Commit-ID:  d7f55c62e63461c4071afe8730851e406935d960
Gitweb:     https://git.kernel.org/tip/d7f55c62e63461c4071afe8730851e406935d960
Author:     Kan Liang <kan.liang@...ux.intel.com>
AuthorDate: Thu, 1 Mar 2018 18:08:59 -0500
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 5 Mar 2018 10:41:59 -0300

perf trace: Switch to new perf_mmap__read_event() interface

The 'perf trace' utility still use the legacy interface.

Switch to the new perf_mmap__read_event() interface.

No functional change.

Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/r/1519945751-37786-2-git-send-email-kan.liang@linux.intel.com
[ Changed bool parameters from 0 to 'false', as per Jiri comment ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-trace.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index e7f1b182fc15..1a93debc1e8d 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2472,8 +2472,14 @@ again:
 
 	for (i = 0; i < evlist->nr_mmaps; i++) {
 		union perf_event *event;
+		struct perf_mmap *md;
+		u64 end, start;
 
-		while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
+		md = &evlist->mmap[i];
+		if (perf_mmap__read_init(md, false, &start, &end) < 0)
+			continue;
+
+		while ((event = perf_mmap__read_event(md, false, &start, end)) != NULL) {
 			struct perf_sample sample;
 
 			++trace->nr_events;
@@ -2486,7 +2492,7 @@ again:
 
 			trace__handle_event(trace, event, &sample);
 next_event:
-			perf_evlist__mmap_consume(evlist, i);
+			perf_mmap__consume(md, false);
 
 			if (interrupted)
 				goto out_disable;
@@ -2496,6 +2502,7 @@ next_event:
 				draining = true;
 			}
 		}
+		perf_mmap__read_done(md);
 	}
 
 	if (trace->nr_events == before) {