linux-kernel - [tip:perf/core] perf intel-pt: Remove redundant initial

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <tip-5da3b23b3b03d34fbb8cb9947c1a99ea77c2203f@git.kernel.org>
Date:   Wed, 21 Jun 2017 11:28:14 -0700
From:   tip-bot for Adrian Hunter <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     hpa@...or.com, adrian.hunter@...el.com, acme@...hat.com,
        ak@...ux.intel.com, linux-kernel@...r.kernel.org,
        tglx@...utronix.de, mingo@...nel.org
Subject: [tip:perf/core] perf intel-pt: Remove redundant initial_skip checks

Commit-ID:  5da3b23b3b03d34fbb8cb9947c1a99ea77c2203f
Gitweb:     http://git.kernel.org/tip/5da3b23b3b03d34fbb8cb9947c1a99ea77c2203f
Author:     Adrian Hunter <adrian.hunter@...el.com>
AuthorDate: Fri, 26 May 2017 11:17:17 +0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 21 Jun 2017 11:35:51 -0300

perf intel-pt: Remove redundant initial_skip checks

'initial_skip' is checked inside the sample synthesis functions which means
it is actually being done twice for 'instructions' and 'transactions'
samples. Remove the redundant checks.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Link: http://lkml.kernel.org/r/1495786658-18063-17-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/intel-pt.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index 5c59b8c..3ae03f9 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -1322,18 +1322,14 @@ static int intel_pt_sample(struct intel_pt_queue *ptq)
 	ptq->have_sample = false;
 
 	if (pt->sample_instructions &&
-	    (state->type & INTEL_PT_INSTRUCTION) &&
-	    (!pt->synth_opts.initial_skip ||
-	     pt->num_events++ >= pt->synth_opts.initial_skip)) {
+	    (state->type & INTEL_PT_INSTRUCTION)) {
 		err = intel_pt_synth_instruction_sample(ptq);
 		if (err)
 			return err;
 	}
 
 	if (pt->sample_transactions &&
-	    (state->type & INTEL_PT_TRANSACTION) &&
-	    (!pt->synth_opts.initial_skip ||
-	     pt->num_events++ >= pt->synth_opts.initial_skip)) {
+	    (state->type & INTEL_PT_TRANSACTION)) {
 		err = intel_pt_synth_transaction_sample(ptq);
 		if (err)
 			return err;