From: Jiri Olsa <jolsa@redhat.com> To: Ian Rogers <irogers@google.com> Cc: Andi Kleen <ak@linux.intel.com>, Namhyung Kim <namhyung@kernel.org>, John Garry <john.garry@huawei.com>, Kajol Jain <kjain@linux.ibm.com>, "Paul A . Clarke" <pc@us.ibm.com>, Arnaldo Carvalho de Melo <acme@kernel.org>, Riccardo Mancini <rickyman7@gmail.com>, Kan Liang <kan.liang@linux.intel.com>, Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>, Mark Rutland <mark.rutland@arm.com>, Alexander Shishkin <alexander.shishkin@linux.intel.com>, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Vineet Singh <vineet.singh@intel.com>, James Clark <james.clark@arm.com>, Mathieu Poirier <mathieu.poirier@linaro.org>, Suzuki K Poulose <suzuki.poulose@arm.com>, Mike Leach <mike.leach@linaro.org>, Leo Yan <leo.yan@linaro.org>, coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, eranian@google.com Subject: Re: [PATCH 21/22] perf cpumap: Trim the cpu_aggr_map Date: Sat, 11 Dec 2021 20:24:46 +0100 [thread overview] Message-ID: <YbT6/kEmnAmkxrJC@krava> (raw) In-Reply-To: <20211208024607.1784932-22-irogers@google.com> On Tue, Dec 07, 2021 at 06:46:06PM -0800, Ian Rogers wrote: > cpu_aggr_map__new removes duplicates, when this happens shrink the > array. > > Signed-off-by: Ian Rogers <irogers@google.com> > --- > tools/perf/util/cpumap.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c > index 8a72ee996722..985c87f1f1ca 100644 > --- a/tools/perf/util/cpumap.c > +++ b/tools/perf/util/cpumap.c > @@ -185,7 +185,12 @@ struct cpu_aggr_map *cpu_aggr_map__new(const struct perf_cpu_map *cpus, > c->nr++; > } > } > - > + /* Trim. */ > + if (c->nr != cpus->nr) { > + c = realloc(c, sizeof(struct cpu_aggr_map) + sizeof(struct aggr_cpu_id) * c->nr); > + if (!c) > + return NULL; > + } curious.. we should do this, but did you detect some big waste in here? thanks, jirka > /* ensure we process id in increasing order */ > qsort(c->map, c->nr, sizeof(struct aggr_cpu_id), aggr_cpu_id__cmp); > > -- > 2.34.1.400.ga245620fadb-goog >
WARNING: multiple messages have this Message-ID (diff)
From: Jiri Olsa <jolsa@redhat.com> To: Ian Rogers <irogers@google.com> Cc: Andi Kleen <ak@linux.intel.com>, Namhyung Kim <namhyung@kernel.org>, John Garry <john.garry@huawei.com>, Kajol Jain <kjain@linux.ibm.com>, "Paul A . Clarke" <pc@us.ibm.com>, Arnaldo Carvalho de Melo <acme@kernel.org>, Riccardo Mancini <rickyman7@gmail.com>, Kan Liang <kan.liang@linux.intel.com>, Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>, Mark Rutland <mark.rutland@arm.com>, Alexander Shishkin <alexander.shishkin@linux.intel.com>, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Vineet Singh <vineet.singh@intel.com>, James Clark <james.clark@arm.com>, Mathieu Poirier <mathieu.poirier@linaro.org>, Suzuki K Poulose <suzuki.poulose@arm.com>, Mike Leach <mike.leach@linaro.org>, Leo Yan <leo.yan@linaro.org>, coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, eranian@google.com Subject: Re: [PATCH 21/22] perf cpumap: Trim the cpu_aggr_map Date: Sat, 11 Dec 2021 20:24:46 +0100 [thread overview] Message-ID: <YbT6/kEmnAmkxrJC@krava> (raw) In-Reply-To: <20211208024607.1784932-22-irogers@google.com> On Tue, Dec 07, 2021 at 06:46:06PM -0800, Ian Rogers wrote: > cpu_aggr_map__new removes duplicates, when this happens shrink the > array. > > Signed-off-by: Ian Rogers <irogers@google.com> > --- > tools/perf/util/cpumap.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c > index 8a72ee996722..985c87f1f1ca 100644 > --- a/tools/perf/util/cpumap.c > +++ b/tools/perf/util/cpumap.c > @@ -185,7 +185,12 @@ struct cpu_aggr_map *cpu_aggr_map__new(const struct perf_cpu_map *cpus, > c->nr++; > } > } > - > + /* Trim. */ > + if (c->nr != cpus->nr) { > + c = realloc(c, sizeof(struct cpu_aggr_map) + sizeof(struct aggr_cpu_id) * c->nr); > + if (!c) > + return NULL; > + } curious.. we should do this, but did you detect some big waste in here? thanks, jirka > /* ensure we process id in increasing order */ > qsort(c->map, c->nr, sizeof(struct aggr_cpu_id), aggr_cpu_id__cmp); > > -- > 2.34.1.400.ga245620fadb-goog > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-12-11 19:24 UTC|newest] Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-08 2:45 [PATCH 00/22] Refactor perf cpumap Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 2:45 ` [PATCH 01/22] libperf: Add comments to perf_cpu_map Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 12:05 ` John Garry 2021-12-08 12:05 ` John Garry 2021-12-08 14:34 ` Ian Rogers 2021-12-08 14:34 ` Ian Rogers 2021-12-08 15:09 ` Ian Rogers 2021-12-08 15:09 ` Ian Rogers 2021-12-10 19:08 ` Arnaldo Carvalho de Melo 2021-12-10 19:08 ` Arnaldo Carvalho de Melo 2021-12-13 8:56 ` John Garry 2021-12-13 8:56 ` John Garry 2021-12-08 2:45 ` [PATCH 02/22] perf stat: Add aggr creators that are passed a cpu Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 12:50 ` John Garry 2021-12-08 12:50 ` John Garry 2021-12-10 19:10 ` Arnaldo Carvalho de Melo 2021-12-10 19:10 ` Arnaldo Carvalho de Melo 2021-12-08 2:45 ` [PATCH 03/22] perf stat: Switch aggregation to use for_each loop Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-11 19:24 ` Jiri Olsa 2021-12-11 19:24 ` Jiri Olsa 2021-12-13 16:17 ` Ian Rogers 2021-12-13 16:17 ` Ian Rogers 2021-12-08 2:45 ` [PATCH 04/22] perf stat: Switch to cpu version of cpu_map__get Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 2:45 ` [PATCH 05/22] perf cpumap: Switch cpu_map__build_map to cpu function Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 2:45 ` [PATCH 06/22] perf cpumap: Remove map+index get_socket Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-11 19:25 ` Jiri Olsa 2021-12-11 19:25 ` Jiri Olsa 2021-12-08 2:45 ` [PATCH 07/22] perf cpumap: Remove map+index get_die Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 2:45 ` [PATCH 08/22] perf cpumap: Remove map+index get_core Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 2:45 ` [PATCH 09/22] perf cpumap: Remove map+index get_node Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 2:45 ` [PATCH 10/22] perf cpumap: Add comments to aggr_cpu_id Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 2:45 ` [PATCH 11/22] perf cpumap: Remove unused cpu_map__socket Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 2:45 ` [PATCH 12/22] perf cpumap: Simplify equal function name Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 2:45 ` [PATCH 13/22] perf cpumap: Rename empty functions Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 2:45 ` [PATCH 14/22] perf cpumap: Document cpu__get_node and remove redundant function Ian Rogers 2021-12-08 2:45 ` Ian Rogers 2021-12-08 2:46 ` [PATCH 15/22] perf cpumap: Remove map from function names that don't use a map Ian Rogers 2021-12-08 2:46 ` Ian Rogers 2021-12-08 2:46 ` [PATCH 16/22] perf cpumap: Remove cpu_map__cpu, use libperf function Ian Rogers 2021-12-08 2:46 ` Ian Rogers 2021-12-08 2:46 ` [PATCH 17/22] perf cpumap: Refactor cpu_map__build_map Ian Rogers 2021-12-08 2:46 ` Ian Rogers 2021-12-11 19:25 ` Jiri Olsa 2021-12-11 19:25 ` Jiri Olsa 2021-12-08 2:46 ` [PATCH 18/22] perf cpumap: Rename cpu_map__get_X_aggr_by_cpu functions Ian Rogers 2021-12-08 2:46 ` Ian Rogers 2021-12-08 2:46 ` [PATCH 19/22] perf cpumap: Move 'has' function to libperf Ian Rogers 2021-12-08 2:46 ` Ian Rogers 2021-12-08 17:59 ` Mathieu Poirier 2021-12-08 17:59 ` Mathieu Poirier 2021-12-08 2:46 ` [PATCH 20/22] perf cpumap: Add some comments to cpu_aggr_map Ian Rogers 2021-12-08 2:46 ` Ian Rogers 2021-12-08 2:46 ` [PATCH 21/22] perf cpumap: Trim the cpu_aggr_map Ian Rogers 2021-12-08 2:46 ` Ian Rogers 2021-12-11 19:24 ` Jiri Olsa [this message] 2021-12-11 19:24 ` Jiri Olsa 2021-12-13 16:11 ` Ian Rogers 2021-12-13 16:11 ` Ian Rogers 2021-12-08 2:46 ` [PATCH 22/22] perf stat: Fix memory leak in check_per_pkg Ian Rogers 2021-12-08 2:46 ` Ian Rogers 2021-12-13 11:39 ` [PATCH 00/22] Refactor perf cpumap James Clark 2021-12-13 11:39 ` James Clark 2021-12-13 16:10 ` Ian Rogers 2021-12-13 16:10 ` Ian Rogers 2021-12-13 22:06 ` Ian Rogers 2021-12-13 22:06 ` Ian Rogers
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