linux-kernel - [PATCH] x86: pebs: remove redundant assignments to sample.period

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>] [day] [month] [year] [list]

Message-ID: <20250506094907.2724-1-changbin.du@huawei.com>
Date: Tue, 6 May 2025 17:49:07 +0800
From: Changbin Du <changbin.du@...wei.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim
	<namhyung@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, Borislav Petkov
	<bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>, <x86@...nel.org>
CC: Mark Rutland <mark.rutland@....com>, Alexander Shishkin
	<alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, Ian
 Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, "Liang,
 Kan" <kan.liang@...ux.intel.com>, "H. Peter Anvin" <hpa@...or.com>,
	<linux-perf-users@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Changbin
 Du <changbin.du@...wei.com>
Subject: [PATCH] x86: pebs: remove redundant assignments to sample.period

The perf_sample_data_init() has already set the period of sample, so no
need to do it again.

Signed-off-by: Changbin Du <changbin.du@...wei.com>
---
 arch/x86/events/intel/ds.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index 9b20acc0e932..292ef21cbfbd 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -1828,8 +1828,6 @@ static void setup_pebs_fixed_sample_data(struct perf_event *event,
 
 	perf_sample_data_init(data, 0, event->hw.last_period);
 
-	data->period = event->hw.last_period;
-
 	/*
 	 * Use latency for weight (only avail with PEBS-LL)
 	 */
@@ -2082,7 +2080,6 @@ static void setup_pebs_adaptive_sample_data(struct perf_event *event,
 	sample_type = event->attr.sample_type;
 	format_group = basic->format_group;
 	perf_sample_data_init(data, 0, event->hw.last_period);
-	data->period = event->hw.last_period;
 
 	setup_pebs_time(event, data, basic->tsc);
 
-- 
2.43.0