Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932655Ab3GPMt1 (ORCPT ); Tue, 16 Jul 2013 08:49:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:23824 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932540Ab3GPMtZ (ORCPT ); Tue, 16 Jul 2013 08:49:25 -0400 Date: Tue, 16 Jul 2013 14:48:46 +0200 From: Jiri Olsa To: Adrian Hunter Cc: Arnaldo Carvalho de Melo , linux-kernel@vger.kernel.org, David Ahern , Frederic Weisbecker , Mike Galbraith , Namhyung Kim , Paul Mackerras , Peter Zijlstra , Stephane Eranian , Ingo Molnar Subject: Re: [PATCH V5 12/12] perf tools: add a sample parsing test Message-ID: <20130716124846.GE9964@krava.brq.redhat.com> References: <1373548341-24119-1-git-send-email-adrian.hunter@intel.com> <1373548341-24119-13-git-send-email-adrian.hunter@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1373548341-24119-13-git-send-email-adrian.hunter@intel.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2551 Lines: 86 On Thu, Jul 11, 2013 at 04:12:21PM +0300, Adrian Hunter wrote: > Add a test that checks that sample parsing is correctly > implemented. nice!!! :) > > Signed-off-by: Adrian Hunter SNIP > +static int do_test(u64 sample_type, u64 sample_regs_user) > +{ > + struct perf_evsel evsel = { > + .needs_swap = false, > + .attr = { > + .sample_type = sample_type, > + .sample_regs_user = sample_regs_user, > + }, > + }; > + union perf_event event = { > + .header = { > + .type = PERF_RECORD_SAMPLE, > + .size = sizeof(union perf_event), > + }, > + }; maybe I'm missing something but how does event.sample.array get allocated? It's used in perf_event__synthesize_sample func. do we need to use something like in the patch below.. thanks, jirka --- diff --git a/tools/perf/tests/sample-parsing.c b/tools/perf/tests/sample-parsing.c index c6e6813..dcbd40d 100644 --- a/tools/perf/tests/sample-parsing.c +++ b/tools/perf/tests/sample-parsing.c @@ -111,12 +111,8 @@ static int do_test(u64 sample_type, u64 sample_regs_user) .sample_regs_user = sample_regs_user, }, }; - union perf_event event = { - .header = { - .type = PERF_RECORD_SAMPLE, - .size = sizeof(union perf_event), - }, - }; + u64 buf[100]; + union perf_event *event = (union perf_event *) buf; union { struct ip_callchain callchain; u64 data[64]; @@ -162,10 +158,15 @@ static int do_test(u64 sample_type, u64 sample_regs_user) size_t i; int err; + event->sample.header = (struct perf_event_header) { + .type = PERF_RECORD_SAMPLE, + .size = sizeof(union perf_event), + }; + for (i = 0; i < sizeof(user_regs); i++) *(u8 *)user_regs = i; - err = perf_event__synthesize_sample(&event, sample_type, + err = perf_event__synthesize_sample(event, sample_type, sample_regs_user, &sample, false); if (err) { pr_debug("%s failed for sample_type %#"PRIx64", error %d\n", @@ -175,7 +176,7 @@ static int do_test(u64 sample_type, u64 sample_regs_user) evsel.sample_size = __perf_evsel__sample_size(sample_type); - err = perf_evsel__parse_sample(&evsel, &event, &sample_out); + err = perf_evsel__parse_sample(&evsel, event, &sample_out); if (err) { pr_debug("%s failed for sample_type %#"PRIx64", error %d\n", "perf_evsel__parse_sample", sample_type, err); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/