From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1162996AbeCAXKu (ORCPT ); Thu, 1 Mar 2018 18:10:50 -0500 Received: from mga04.intel.com ([192.55.52.120]:30247 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1162854AbeCAXKP (ORCPT ); Thu, 1 Mar 2018 18:10:15 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.47,409,1515484800"; d="scan'208";a="208165087" From: kan.liang@linux.intel.com To: acme@kernel.org, mingo@redhat.com, linux-kernel@vger.kernel.org Cc: jolsa@redhat.com, namhyung@kernel.org, wangnan0@huawei.com, ak@linux.intel.com, Kan Liang Subject: [PATCH 14/14] perf tools: Discard legacy interfaces for mmap read forward Date: Thu, 1 Mar 2018 18:09:11 -0500 Message-Id: <1519945751-37786-14-git-send-email-kan.liang@linux.intel.com> X-Mailer: git-send-email 2.4.11 In-Reply-To: <1519945751-37786-1-git-send-email-kan.liang@linux.intel.com> References: <1519945751-37786-1-git-send-email-kan.liang@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kan Liang Discards legacy interfaces perf_evlist__mmap_read_forward(), perf_evlist__mmap_read() and perf_evlist__mmap_consume(). No tools use them. Signed-off-by: Kan Liang --- tools/perf/util/evlist.c | 25 +------------------------ tools/perf/util/evlist.h | 4 ---- tools/perf/util/mmap.c | 21 +-------------------- 3 files changed, 2 insertions(+), 48 deletions(-) diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 7b7d535..41a4666 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -702,29 +702,6 @@ static int perf_evlist__resume(struct perf_evlist *evlist) return perf_evlist__set_paused(evlist, false); } -union perf_event *perf_evlist__mmap_read_forward(struct perf_evlist *evlist, int idx) -{ - struct perf_mmap *md = &evlist->mmap[idx]; - - /* - * Check messup is required for forward overwritable ring buffer: - * memory pointed by md->prev can be overwritten in this case. - * No need for read-write ring buffer: kernel stop outputting when - * it hit md->prev (perf_mmap__consume()). - */ - return perf_mmap__read_forward(md); -} - -union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx) -{ - return perf_evlist__mmap_read_forward(evlist, idx); -} - -void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx) -{ - perf_mmap__consume(&evlist->mmap[idx], false); -} - static void perf_evlist__munmap_nofree(struct perf_evlist *evlist) { int i; @@ -761,7 +738,7 @@ static struct perf_mmap *perf_evlist__alloc_mmap(struct perf_evlist *evlist) map[i].fd = -1; /* * When the perf_mmap() call is made we grab one refcount, plus - * one extra to let perf_evlist__mmap_consume() get the last + * one extra to let perf_mmap__consume() get the last * events after all real references (perf_mmap__get()) are * dropped. * diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index 336b838..6c41b2f 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -129,10 +129,6 @@ struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id); void perf_evlist__toggle_bkw_mmap(struct perf_evlist *evlist, enum bkw_mmap_state state); -union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx); - -union perf_event *perf_evlist__mmap_read_forward(struct perf_evlist *evlist, - int idx); void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx); int perf_evlist__open(struct perf_evlist *evlist); diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c index 91531a7..4f27c46 100644 --- a/tools/perf/util/mmap.c +++ b/tools/perf/util/mmap.c @@ -64,25 +64,6 @@ static union perf_event *perf_mmap__read(struct perf_mmap *map, } /* - * legacy interface for mmap read. - * Don't use it. Use perf_mmap__read_event(). - */ -union perf_event *perf_mmap__read_forward(struct perf_mmap *map) -{ - u64 head; - - /* - * Check if event was unmapped due to a POLLHUP/POLLERR. - */ - if (!refcount_read(&map->refcnt)) - return NULL; - - head = perf_mmap__read_head(map); - - return perf_mmap__read(map, &map->prev, head); -} - -/* * Read event from ring buffer one by one. * Return one event for each call. * @@ -191,7 +172,7 @@ void perf_mmap__munmap(struct perf_mmap *map) int perf_mmap__mmap(struct perf_mmap *map, struct mmap_params *mp, int fd) { /* - * The last one will be done at perf_evlist__mmap_consume(), so that we + * The last one will be done at perf_mmap__consume(), so that we * make sure we don't prevent tools from consuming every last event in * the ring buffer. * -- 2.4.11