From: Jiri Olsa <jolsa@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Michael Petlan <mpetlan@redhat.com>
Subject: [PATCH 66/73] libperf: Add perf_evlist__for_each_mmap function
Date: Fri, 13 Sep 2019 15:23:48 +0200 [thread overview]
Message-ID: <20190913132355.21634-67-jolsa@kernel.org> (raw)
In-Reply-To: <20190913132355.21634-1-jolsa@kernel.org>
Adding perf_evlist__for_each_mmap function and exporting
it in perf/evlist.h header, so user can iterate through
'struct perf_mmap' objects.
Adding internal perf_mmap__link function to do the actual
linking.
Link: http://lkml.kernel.org/n/tip-5h62ytvpxgozhqix2y41cvex@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/lib/evlist.c | 13 +++++++++++++
tools/perf/lib/include/internal/mmap.h | 2 ++
tools/perf/lib/include/perf/evlist.h | 7 +++++++
tools/perf/lib/libperf.map | 1 +
tools/perf/lib/mmap.c | 6 ++++++
tools/perf/util/evlist.c | 1 +
6 files changed, 30 insertions(+)
diff --git a/tools/perf/lib/evlist.c b/tools/perf/lib/evlist.c
index ee1d364460e6..ca98aac80ce1 100644
--- a/tools/perf/lib/evlist.c
+++ b/tools/perf/lib/evlist.c
@@ -382,6 +382,7 @@ perf_evlist__mmap_cb_new(struct perf_evlist *evlist, bool overwrite, int idx)
maps = overwrite ? evlist->mmap_ovw : evlist->mmap;
maps[idx] = map;
+ perf_mmap__link(idx ? maps[idx - 1] : NULL, map);
return map;
}
@@ -584,3 +585,15 @@ void perf_evlist__munmap(struct perf_evlist *evlist)
zfree(&evlist->mmap);
zfree(&evlist->mmap_ovw);
}
+
+struct perf_mmap*
+perf_evlist__next_mmap(struct perf_evlist *evlist, struct perf_mmap *map)
+{
+ if (map)
+ return map->next;
+
+ if (!evlist->mmap)
+ return NULL;
+
+ return evlist->mmap[0];
+}
diff --git a/tools/perf/lib/include/internal/mmap.h b/tools/perf/lib/include/internal/mmap.h
index 98e31f8ab461..f0fdf9b5a1d5 100644
--- a/tools/perf/lib/include/internal/mmap.h
+++ b/tools/perf/lib/include/internal/mmap.h
@@ -33,6 +33,7 @@ struct perf_mmap {
u64 flush;
libperf_unmap_cb_t unmap_cb;
char event_copy[PERF_SAMPLE_MAX_SIZE] __aligned(8);
+ struct perf_mmap *next;
};
struct perf_mmap_param {
@@ -54,4 +55,5 @@ void perf_mmap__put(struct perf_mmap *map);
u64 perf_mmap__read_head(struct perf_mmap *map);
+void perf_mmap__link(struct perf_mmap *prev, struct perf_mmap *map);
#endif /* __LIBPERF_INTERNAL_MMAP_H */
diff --git a/tools/perf/lib/include/perf/evlist.h b/tools/perf/lib/include/perf/evlist.h
index 16f526e74d13..9c3f341dc261 100644
--- a/tools/perf/lib/include/perf/evlist.h
+++ b/tools/perf/lib/include/perf/evlist.h
@@ -38,4 +38,11 @@ LIBPERF_API int perf_evlist__filter_pollfd(struct perf_evlist *evlist,
LIBPERF_API int perf_evlist__mmap(struct perf_evlist *evlist, int pages);
LIBPERF_API void perf_evlist__munmap(struct perf_evlist *evlist);
+LIBPERF_API struct perf_mmap *perf_evlist__next_mmap(struct perf_evlist *evlist,
+ struct perf_mmap *map);
+#define perf_evlist__for_each_mmap(evlist, pos) \
+ for ((pos) = perf_evlist__next_mmap((evlist), NULL); \
+ (pos) != NULL; \
+ (pos) = perf_evlist__next_mmap((evlist), (pos)))
+
#endif /* __LIBPERF_EVLIST_H */
diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map
index 90aee2a635b2..265188126b08 100644
--- a/tools/perf/lib/libperf.map
+++ b/tools/perf/lib/libperf.map
@@ -42,6 +42,7 @@ LIBPERF_0.0.1 {
perf_evlist__mmap;
perf_evlist__munmap;
perf_evlist__filter_pollfd;
+ perf_evlist__next_mmap;
perf_mmap__consume;
perf_mmap__read_init;
perf_mmap__read_done;
diff --git a/tools/perf/lib/mmap.c b/tools/perf/lib/mmap.c
index f8816c7bee87..453c8a57a895 100644
--- a/tools/perf/lib/mmap.c
+++ b/tools/perf/lib/mmap.c
@@ -281,3 +281,9 @@ union perf_event *perf_mmap__read_event(struct perf_mmap *map)
return event;
}
+
+void perf_mmap__link(struct perf_mmap *prev, struct perf_mmap *map)
+{
+ if (prev)
+ prev->next = map;
+}
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 9edb0855f711..1e703eb11500 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -591,6 +591,7 @@ static struct mmap *evlist__alloc_mmap(struct evlist *evlist,
* thus does perf_mmap__get() on it.
*/
perf_mmap__init(&map[i].core, overwrite, perf_mmap__unmap_cb);
+ perf_mmap__link(i ? &map[i - 1].core : NULL, &map[i].core);
}
return map;
--
2.21.0
next prev parent reply other threads:[~2019-09-13 13:26 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-13 13:22 [RFC 00/73] libperf: Add sampling interface Jiri Olsa
2019-09-13 13:22 ` [PATCH 01/73] tools: Add missing stdio.h include to asm/bug.h header Jiri Olsa
2019-09-13 13:22 ` [PATCH 02/73] perf tests: Fix static build test Jiri Olsa
2019-09-13 13:22 ` [PATCH 03/73] perf tools: Rename struct perf_mmap to struct mmap Jiri Olsa
2019-09-13 13:22 ` [PATCH 04/73] perf tools: Rename perf_evlist__mmap() to evlist__mmap() Jiri Olsa
2019-09-13 13:22 ` [PATCH 05/73] perf tools: Rename perf_evlist__munmap() to evlist__munmap() Jiri Olsa
2019-09-13 13:22 ` [PATCH 06/73] perf tools: Rename perf_evlist__alloc_mmap() to evlist__alloc_mmap() Jiri Olsa
2019-09-13 13:22 ` [PATCH 07/73] perf tools: Rename perf_evlist__exit() to evlist__exit() Jiri Olsa
2019-09-13 13:22 ` [PATCH 08/73] perf tools: Rename perf_evlist__purge() to evlist__purge() Jiri Olsa
2019-09-13 13:22 ` [PATCH 09/73] libperf: Link libapi.a in libperf.so Jiri Olsa
2019-09-13 13:22 ` [PATCH 10/73] libperf: Add perf_mmap struct Jiri Olsa
2019-09-23 15:05 ` Arnaldo Carvalho de Melo
2019-09-23 15:09 ` Jiri Olsa
2019-09-13 13:22 ` [PATCH 11/73] libperf: Add mask to struct perf_mmap Jiri Olsa
2019-09-13 13:22 ` [PATCH 12/73] libperf: Add fd " Jiri Olsa
2019-09-13 13:22 ` [PATCH 13/73] libperf: Add cpu " Jiri Olsa
2019-09-13 13:22 ` [PATCH 14/73] libperf: Add refcnt " Jiri Olsa
2019-09-13 13:22 ` [PATCH 15/73] libperf: Add prev/start/end " Jiri Olsa
2019-09-13 13:22 ` [PATCH 16/73] libperf: Add overwrite " Jiri Olsa
2019-09-13 13:22 ` [PATCH 17/73] libperf: Add event_copy " Jiri Olsa
2019-09-13 13:23 ` [PATCH 18/73] libperf: Add flush " Jiri Olsa
2019-09-13 13:23 ` [PATCH 19/73] libperf: Move system_wide from struct evsel to struct perf_evsel Jiri Olsa
2019-09-23 18:08 ` Arnaldo Carvalho de Melo
2019-09-13 13:23 ` [PATCH 20/73] libperf: Move nr_mmaps from struct evlist to struct perf_evlist Jiri Olsa
2019-09-13 13:23 ` [PATCH 21/73] libperf: Move mmap_len " Jiri Olsa
2019-09-13 13:23 ` [PATCH 22/73] libperf: Move pollfd " Jiri Olsa
2019-09-13 13:23 ` [PATCH 23/73] libperf: Move sample_id from struct evsel to struct perf_evsel Jiri Olsa
2019-09-13 13:23 ` [PATCH 24/73] libperf: Move id " Jiri Olsa
2019-09-13 13:23 ` [PATCH 25/73] libperf: Move ids " Jiri Olsa
2019-09-13 13:23 ` [PATCH 26/73] libperf: Move heads from struct evlist to struct perf_evlist Jiri Olsa
2019-09-13 13:23 ` [PATCH 27/73] libperf: Add perf_evsel__alloc_id/perf_evsel__free_id functions Jiri Olsa
2019-09-13 13:23 ` [PATCH 28/73] libperf: Add perf_evlist__first/last functions Jiri Olsa
2019-09-13 13:23 ` [PATCH 29/73] libperf: Add perf_evlist__read_format function Jiri Olsa
2019-09-13 13:23 ` [PATCH 30/73] libperf: Add perf_evlist__id_add function Jiri Olsa
2019-09-13 13:23 ` [PATCH 31/73] libperf: Add perf_evlist__id_add_fd function Jiri Olsa
2019-09-13 13:23 ` [PATCH 32/73] libperf: Move page_size into libperf Jiri Olsa
2019-09-23 19:10 ` Arnaldo Carvalho de Melo
2019-09-23 19:17 ` Jiri Olsa
2019-09-13 13:23 ` [PATCH 33/73] libperf: Merge libperf_set_print in libperf_init Jiri Olsa
2019-09-13 13:23 ` [PATCH 34/73] libperf: Add libperf_init call to tests Jiri Olsa
2019-09-13 13:23 ` [PATCH 35/73] libperf: Add libperf dependency for tests targets Jiri Olsa
2019-09-13 13:23 ` [PATCH 36/73] libperf: Add perf_evlist__alloc_pollfd function Jiri Olsa
2019-09-13 13:23 ` [PATCH 37/73] libperf: Add perf_evlist__add_pollfd function Jiri Olsa
2019-09-13 13:23 ` [PATCH 38/73] libperf: Add perf_evlist__poll function Jiri Olsa
2019-09-13 13:23 ` [PATCH 39/73] libperf: Add perf_mmap__init function Jiri Olsa
2019-09-13 13:23 ` [PATCH 40/73] libperf: Add struct perf_mmap_param Jiri Olsa
2019-09-13 13:23 ` [PATCH 41/73] libperf: Add perf_mmap__mmap_len function Jiri Olsa
2019-09-13 13:23 ` [PATCH 42/73] libperf: Add perf_mmap__mmap function Jiri Olsa
2019-09-13 13:23 ` [PATCH 43/73] libperf: Add perf_mmap__get function Jiri Olsa
2019-09-13 13:23 ` [PATCH 44/73] libperf: Add perf_mmap__unmap function Jiri Olsa
2019-09-13 13:23 ` [PATCH 45/73] libperf: Add perf_mmap__put function Jiri Olsa
2019-09-13 13:23 ` [PATCH 46/73] libperf: Add perf_mmap__new function Jiri Olsa
2019-09-13 13:23 ` [PATCH 47/73] perf tools: Use perf_mmap way to detect aux mmap Jiri Olsa
2019-09-13 13:23 ` [PATCH 48/73] libperf: Add perf_mmap__consume function Jiri Olsa
2019-09-13 13:23 ` [PATCH 49/73] libperf: Add perf_mmap__read_init function Jiri Olsa
2019-09-13 13:23 ` [PATCH 50/73] libperf: Add perf_mmap__read_done function Jiri Olsa
2019-09-13 13:23 ` [PATCH 51/73] libperf: Add perf_mmap__read_event function Jiri Olsa
2019-09-13 13:23 ` [PATCH 52/73] libperf: Add perf_evlist__mmap/munmap function Jiri Olsa
2019-09-13 13:23 ` [PATCH 53/73] libperf: Add perf_evlist__mmap_ops function Jiri Olsa
2019-09-13 13:23 ` [PATCH 54/73] libperf: Add perf_evlist_mmap_ops::idx callback Jiri Olsa
2019-09-13 13:23 ` [PATCH 55/73] libperf: Add perf_evlist_mmap_ops::new callback Jiri Olsa
2019-09-13 13:23 ` [PATCH 56/73] libperf: Add perf_evlist_mmap_ops::mmap callback Jiri Olsa
2019-09-13 13:23 ` [PATCH 57/73] perf tools: Add perf_evlist__mmap_cb_idx function Jiri Olsa
2019-09-13 13:23 ` [PATCH 58/73] perf tools: Add perf_evlist__mmap_cb_new function Jiri Olsa
2019-09-13 13:23 ` [PATCH 59/73] perf tools: Add perf_evlist__mmap_cb_mmap function Jiri Olsa
2019-09-13 13:23 ` [PATCH 60/73] perf tools: Switch to libperf mmap interface Jiri Olsa
2019-09-13 13:23 ` [PATCH 61/73] libperf: Move pollfd allocation to libperf Jiri Olsa
2019-09-13 13:23 ` [PATCH 62/73] libperf: Add perf_evlist__exit function Jiri Olsa
2019-09-13 13:23 ` [PATCH 63/73] libperf: Add perf_evlist__purge function Jiri Olsa
2019-09-13 13:23 ` [PATCH 64/73] libperf: Call perf_evlist__munmap/close on perf_evlist__delete Jiri Olsa
2019-09-13 13:23 ` [PATCH 65/73] libperf: Add perf_evlist__filter_pollfd function Jiri Olsa
2019-09-13 13:23 ` Jiri Olsa [this message]
2019-09-13 13:23 ` [PATCH 67/73] libperf: Link static tests with libapi.a Jiri Olsa
2019-09-13 13:23 ` [PATCH 68/73] libperf: Add _GNU_SOURCE define to compilation Jiri Olsa
2019-09-13 13:23 ` [PATCH 69/73] libperf: Add tests_mmap_thread test Jiri Olsa
2019-09-13 13:23 ` [PATCH 70/73] libperf: Add tests_mmap_cpus test Jiri Olsa
2019-09-13 13:23 ` [PATCH 71/73] libperf: Keep count of failed tests Jiri Olsa
2019-09-13 13:23 ` [PATCH 72/73] libperf: Do not export perf_evsel__init/perf_evlist__init Jiri Olsa
2019-09-13 13:23 ` [PATCH 73/73] libperf: Add pr_err macro Jiri Olsa
2019-09-22 14:47 ` [RFC 00/73] libperf: Add sampling interface Jiri Olsa
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