From nobody Sun Feb 8 11:59:27 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D9C651E9B0A; Sat, 1 Mar 2025 20:07:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740859657; cv=none; b=u+YFNROnRopB/boZRcv8ATXXFCN7gCQpZ17qYRsRoYjXthjIiLqYQpQQIeCI2Y5lHOZ/GhwFjFiAei+4E3m58bi9kljWn4BUNzQ+HfEKmOS5asZHb9sNelX8SPVs0NAyFwU9JQ1s3sEVGZ38W/AyVAvVRiPuZltmXbKJbHrwiPU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740859657; c=relaxed/simple; bh=HRwCFCeXT56dHAaBAJZAahoDn7blg9JqQeL/t7RaZyM=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=hPN7S7RvCfYAdmgaWhv+BBcx9sjPpBg3D0G6RumNqk2l5Bucs9yp7Ee8w95AhnIrp+DEIJoYHduyuNrEd8C9kLUZVHMNFC0xcI1Gj3Ej7TxoNRfYy5oPZ2ePOQqcHD5Y2QzP9f9OBLSzA08jufVJj6SkEY2HqiSmQTSpk9VhO2g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=kbc3+DGq; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=mh8+Hfd5; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="kbc3+DGq"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="mh8+Hfd5" Date: Sat, 01 Mar 2025 20:07:32 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1740859652; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=x1IPykJJI0HbaUCdXfGG6QIROVvFnfChJocvPi2C6kg=; b=kbc3+DGqLHmgSn+y0+24zzBS1NUoX8TYO6eS+x2fiEZI2WLWvFWLa3PMnqUo6YNzDlUbe0 tZpvYRZfDAImuJUSxKyUcEVwNOSFhXkoQBhtWDc5SpLksoFNQQ+o9as1Dp3/D3ycRA37jh Uzwz2fBqgbNDjWK+K+yp4IVOBVZfrPpUASSbIgTH5/lVbTNvzAzyVUVKkKhLAjVHqslsz4 Q3jCyIHtGp22zL7LnQ7mgwyI+qO3dF2uOjZ0eQwTwNWUOaPn2PxSm2/zs81qneaO+JnZDM YB6Cgg6zemRFAWQbYNaFgqbshgtni3tCx7LPGZLVO4ulrw8u+X3ovFVThgQ7bA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1740859652; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=x1IPykJJI0HbaUCdXfGG6QIROVvFnfChJocvPi2C6kg=; b=mh8+Hfd5cYefIvzdl9vEIvvwO+jRuQDKCDQEAp3EL+TBDtl5XHDq/YM5a/uu5qwZ5qnVou AqwYm3YnWk9tgEDQ== From: "tip-bot2 for Peter Zijlstra" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: perf/core] perf/core: Introduce perf_free_addr_filters() Cc: "Peter Zijlstra (Intel)" , Ingo Molnar , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20241104135518.868460518@infradead.org> References: <20241104135518.868460518@infradead.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <174085965200.10177.7481359939626568558.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the perf/core branch of tip: Commit-ID: 8e140c656746ef14d34be68d56f1a1047991a8be Gitweb: https://git.kernel.org/tip/8e140c656746ef14d34be68d56f1a1047= 991a8be Author: Peter Zijlstra AuthorDate: Mon, 04 Nov 2024 14:39:21 +01:00 Committer: Ingo Molnar CommitterDate: Sat, 01 Mar 2025 20:02:51 +01:00 perf/core: Introduce perf_free_addr_filters() Replace _free_event()'s use of perf_addr_filters_splice()s use with an explicit perf_free_addr_filters() with the explicit propery that it is able to be called a second time without ill effect. Most notable, referencing event->pmu must be avoided when there are no filters left (from eg a previous call). Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/r/20241104135518.868460518@infradead.org --- kernel/events/core.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index 0c7015f..525c64e 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5339,8 +5339,7 @@ static bool exclusive_event_installable(struct perf_e= vent *event, return true; } =20 -static void perf_addr_filters_splice(struct perf_event *event, - struct list_head *head); +static void perf_free_addr_filters(struct perf_event *event); =20 static void perf_pending_task_sync(struct perf_event *event) { @@ -5439,7 +5438,7 @@ static void _free_event(struct perf_event *event) } =20 perf_event_free_bpf_prog(event); - perf_addr_filters_splice(event, NULL); + perf_free_addr_filters(event); =20 __free_event(event); } @@ -11004,6 +11003,17 @@ static void perf_addr_filters_splice(struct perf_e= vent *event, free_filters_list(&list); } =20 +static void perf_free_addr_filters(struct perf_event *event) +{ + /* + * Used during free paths, there is no concurrency. + */ + if (list_empty(&event->addr_filters.list)) + return; + + perf_addr_filters_splice(event, NULL); +} + /* * Scan through mm's vmas and see if one of them matches the * @filter; if so, adjust filter's address range.