From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiri Olsa Subject: Re: [PATCH v4 03/15] perf tools script: Filter COMM/FORK/.. events by CPU Date: Thu, 7 Mar 2019 12:02:31 +0100 Message-ID: <20190307110231.GB8979@krava> References: <20190305144758.12397-1-andi@firstfloor.org> <20190305144758.12397-4-andi@firstfloor.org> <6d837d6b-da67-9878-dcc5-a2b0f2dc6826@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <6d837d6b-da67-9878-dcc5-a2b0f2dc6826@intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Adrian Hunter Cc: Andi Kleen , acme@kernel.org, jolsa@kernel.org, namhyung@kernel.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Andi Kleen List-Id: linux-perf-users.vger.kernel.org On Wed, Mar 06, 2019 at 04:23:40PM +0200, Adrian Hunter wrote: > On 5/03/19 4:47 PM, Andi Kleen wrote: > > From: Andi Kleen > > > > The --cpu option only filtered samples. Filter other perf events, > > such as COMM, FORK, SWITCH by the CPU too. > > Because tasks can migrate from cpu to cpu, we probably need to process most > of the events anyway, even if they are not printed. agreed, I wonder we could just make the perf_event__fprintf conditional jirka > > > > > Reported-by: Jiri Olsa > > Signed-off-by: Andi Kleen > > --- > > tools/perf/builtin-script.c | 24 ++++++++++++++++++++++++ > > 1 file changed, 24 insertions(+) > > > > diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c > > index fbc440bdf880..3813f60d1dc0 100644 > > --- a/tools/perf/builtin-script.c > > +++ b/tools/perf/builtin-script.c > > @@ -2038,6 +2038,9 @@ static int process_comm_event(struct perf_tool *tool, > > struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); > > int ret = -1; > > > > + if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) > > + return 0; > > + > > thread = machine__findnew_thread(machine, event->comm.pid, event->comm.tid); > > if (thread == NULL) { > > pr_debug("problem processing COMM event, skipping it.\n"); > > @@ -2073,6 +2076,9 @@ static int process_namespaces_event(struct perf_tool *tool, > > struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); > > int ret = -1; > > > > + if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) > > + return 0; > > + > > thread = machine__findnew_thread(machine, event->namespaces.pid, > > event->namespaces.tid); > > if (thread == NULL) { > > @@ -2108,6 +2114,9 @@ static int process_fork_event(struct perf_tool *tool, > > struct perf_session *session = script->session; > > struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); > > > > + if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) > > + return 0; > > + > > if (perf_event__process_fork(tool, event, sample, machine) < 0) > > return -1; > > > > @@ -2141,6 +2150,9 @@ static int process_exit_event(struct perf_tool *tool, > > struct perf_session *session = script->session; > > struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); > > > > + if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) > > + return 0; > > + > > thread = machine__findnew_thread(machine, event->fork.pid, event->fork.tid); > > if (thread == NULL) { > > pr_debug("problem processing EXIT event, skipping it.\n"); > > @@ -2174,6 +2186,9 @@ static int process_mmap_event(struct perf_tool *tool, > > struct perf_session *session = script->session; > > struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); > > > > + if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) > > + return 0; > > + > > if (perf_event__process_mmap(tool, event, sample, machine) < 0) > > return -1; > > > > @@ -2206,6 +2221,9 @@ static int process_mmap2_event(struct perf_tool *tool, > > struct perf_session *session = script->session; > > struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); > > > > + if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) > > + return 0; > > + > > if (perf_event__process_mmap2(tool, event, sample, machine) < 0) > > return -1; > > > > @@ -2238,6 +2256,9 @@ static int process_switch_event(struct perf_tool *tool, > > struct perf_session *session = script->session; > > struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); > > > > + if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) > > + return 0; > > + > > if (perf_event__process_switch(tool, event, sample, machine) < 0) > > return -1; > > > > @@ -2266,6 +2287,9 @@ process_lost_event(struct perf_tool *tool, > > struct perf_evsel *evsel = perf_evlist__id2evsel(session->evlist, sample->id); > > struct thread *thread; > > > > + if (cpu_list && !test_bit(sample->cpu, cpu_bitmap)) > > + return 0; > > + > > thread = machine__findnew_thread(machine, sample->pid, > > sample->tid); > > if (thread == NULL) > > >