linux-kernel - [PATCH] perf/x86/intel/bts: Fix comment about default perf_event

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Message-Id: <20240802105256.335961-1-james.clark@linaro.org>
Date: Fri,  2 Aug 2024 11:52:55 +0100
From: James Clark <james.clark@...aro.org>
To: linux-kernel@...r.kernel.org
Cc: James Clark <james.clark@...aro.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	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>,
	Thomas Gleixner <tglx@...utronix.de>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>,
	linux-perf-users@...r.kernel.org
Subject: [PATCH] perf/x86/intel/bts: Fix comment about default perf_event_paranoid setting

The default paranoid setting was updated in commit 0161028b7c8a
("perf/core: Change the default paranoia level to 2") so this comment is
no longer true.

Signed-off-by: James Clark <james.clark@...aro.org>
---
 arch/x86/events/intel/bts.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/x86/events/intel/bts.c b/arch/x86/events/intel/bts.c
index 974e917e65b2..8f78b0c900ef 100644
--- a/arch/x86/events/intel/bts.c
+++ b/arch/x86/events/intel/bts.c
@@ -557,9 +557,6 @@ static int bts_event_init(struct perf_event *event)
 	 * disabled, so disallow intel_bts driver for unprivileged
 	 * users on paranoid systems since it provides trace data
 	 * to the user in a zero-copy fashion.
-	 *
-	 * Note that the default paranoia setting permits unprivileged
-	 * users to profile the kernel.
 	 */
 	if (event->attr.exclude_kernel) {
 		ret = perf_allow_kernel(&event->attr);
-- 
2.34.1