linux-kernel - [PATCH RFC 3/9] drm/i915: Avoid open-coded use of ratelimit

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: <20250403211514.985900-3-paulmck@kernel.org>
Date: Thu,  3 Apr 2025 14:15:08 -0700
From: "Paul E. McKenney" <paulmck@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: kernel-team@...a.com,
	"Paul E. McKenney" <paulmck@...nel.org>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@...el.com>,
	Tvrtko Ursulin <tursulin@...ulin.net>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	intel-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH RFC 3/9] drm/i915: Avoid open-coded use of ratelimit_state structure's ->missed field

The i915_oa_stream_destroy() function directly accesses the
ratelimit_state structure's ->missed field, which work, but which also
makes it more difficult to change this field.  Therefore, make use of
the ratelimit_state_get_miss() function instead of directly accessing
the ->missed field.

Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
Cc: Jani Nikula <jani.nikula@...ux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@...el.com>
Cc: Tvrtko Ursulin <tursulin@...ulin.net>
Cc: David Airlie <airlied@...il.com>
Cc: Simona Vetter <simona@...ll.ch>
Cc: <intel-gfx@...ts.freedesktop.org>
Cc: <dri-devel@...ts.freedesktop.org>
---
 drivers/gpu/drm/i915/i915_perf.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 5384d1bb49233..a1ffb45a413b0 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -1663,6 +1663,7 @@ static void i915_oa_stream_destroy(struct i915_perf_stream *stream)
 	struct i915_perf *perf = stream->perf;
 	struct intel_gt *gt = stream->engine->gt;
 	struct i915_perf_group *g = stream->engine->oa_group;
+	int m;
 
 	if (WARN_ON(stream != g->exclusive_stream))
 		return;
@@ -1687,10 +1688,9 @@ static void i915_oa_stream_destroy(struct i915_perf_stream *stream)
 	free_oa_configs(stream);
 	free_noa_wait(stream);
 
-	if (perf->spurious_report_rs.missed) {
-		gt_notice(gt, "%d spurious OA report notices suppressed due to ratelimiting\n",
-			  perf->spurious_report_rs.missed);
-	}
+	m = ratelimit_state_get_miss(&perf->spurious_report_rs);
+	if (m)
+		gt_notice(gt, "%d spurious OA report notices suppressed due to ratelimiting\n", m);
 }
 
 static void gen7_init_oa_buffer(struct i915_perf_stream *stream)
-- 
2.40.1