From nobody Sun Feb 8 14:06:37 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 C04C71DE2C7; Mon, 10 Mar 2025 19:59:07 +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=1741636749; cv=none; b=pBDPJgXIlnGUyXPnVHkP7KTnL0E1xrNKDpwGqcMYZ9Yityw0rfAE6U4Etxv0ztmsuyvnLy4yv+DgZQyPlIzIah3STYX4nArqlxrEmXGkrtB+xUndRv71mp+5CdBQiaXcD3kZL/h439YaGvXS3GargFXyJBn1EtoLckw+yhh7d7I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741636749; c=relaxed/simple; bh=H5ycHYupR28l1HqDSyLBg9rTOcsIGNw4x4qnabynmmM=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=VSekre8FiCnh/eHev1zXSnMCsQXSnbI0lsNLP+vgzJWPQ4+t+MhaTo8eDGYlPT8IWJkBr08f+eXpAGO7UjQU1ObDPZyXQR3ne+EB/Jrr9gHCts5XcvUSkUSlYSSab5rQoOGOQuBMtfyIaqgoHov1wLmbFpHeYytQPCSFzYkZ4pU= 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=3SbeLVv1; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=ERBjMpka; 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="3SbeLVv1"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="ERBjMpka" Date: Mon, 10 Mar 2025 19:59:04 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1741636746; 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=uLGE1KdgCPQhUtvXDXBlsuV2cfjDAG5GjUb0ed3g0a8=; b=3SbeLVv11xKGSdx6ouLcfcYMFTE+OctQlV7xqzUDglkuieS0pqg5NF2rYsKEuAqdTO72qG V3IZ4PZnosx0r8nhkWcFotynMRV7nBUFzLBX4/Oc/Rx4jqqC4qtfFHIf9PofmIr8jyVir5 9Oe+J+mQc9Yv/pEZyHACxcFfbB3O9m+xg6JqQvhtq9JMEzvI/1rO3qv4q89y0HFhihr9FL 9qVJmaYl4yABsqCxpTL0wjvWwzaQcZS51KInydJkVHvzeAavFTUvkrEV5PRnz7JaZStR7w 7bXSzOGVHLw7sBY0W50KXScY2cYmdMfIZjJs+qzXtZV7CPVoswUdwIsRV8WFoA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1741636746; 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=uLGE1KdgCPQhUtvXDXBlsuV2cfjDAG5GjUb0ed3g0a8=; b=ERBjMpkaI3HlSlM+1HMdfFEb9hY6loJPHSakz/UY8ZxxpgvGR5gubuimWUWDbfwySs8Axq SdvQATqtC4tamODw== From: "tip-bot2 for Thorsten Blum" 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: Remove optional 'size' arguments from strscpy() calls Cc: Thorsten Blum , Ingo Molnar , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20250310192336.442994-1-thorsten.blum@linux.dev> References: <20250310192336.442994-1-thorsten.blum@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <174163674500.14745.11511940835737633546.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: fd3f5d385a52531589c8a7a26d9e108aa1d3f52e Gitweb: https://git.kernel.org/tip/fd3f5d385a52531589c8a7a26d9e108aa= 1d3f52e Author: Thorsten Blum AuthorDate: Mon, 10 Mar 2025 20:23:35 +01:00 Committer: Ingo Molnar CommitterDate: Mon, 10 Mar 2025 20:50:30 +01:00 perf/core: Remove optional 'size' arguments from strscpy() calls The 'size' parameter is optional and strscpy() automatically determines the length of the destination buffer using sizeof() if the argument is omitted. This makes the explicit sizeof() calls unnecessary. Furthermore, KSYM_NAME_LEN is equal to sizeof(name) and can also be removed. Remove them to shorten and simplify the code. Signed-off-by: Thorsten Blum Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/r/20250310192336.442994-1-thorsten.blum@linux= .dev --- kernel/events/core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index f159dba..e7d0b05 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -8665,7 +8665,7 @@ static void perf_event_comm_event(struct perf_comm_ev= ent *comm_event) unsigned int size; =20 memset(comm, 0, sizeof(comm)); - strscpy(comm, comm_event->task->comm, sizeof(comm)); + strscpy(comm, comm_event->task->comm); size =3D ALIGN(strlen(comm)+1, sizeof(u64)); =20 comm_event->comm =3D comm; @@ -9109,7 +9109,7 @@ static void perf_event_mmap_event(struct perf_mmap_ev= ent *mmap_event) } =20 cpy_name: - strscpy(tmp, name, sizeof(tmp)); + strscpy(tmp, name); name =3D tmp; got_name: /* @@ -9533,7 +9533,7 @@ void perf_event_ksymbol(u16 ksym_type, u64 addr, u32 = len, bool unregister, ksym_type =3D=3D PERF_RECORD_KSYMBOL_TYPE_UNKNOWN) goto err; =20 - strscpy(name, sym, KSYM_NAME_LEN); + strscpy(name, sym); name_len =3D strlen(name) + 1; while (!IS_ALIGNED(name_len, sizeof(u64))) name[name_len++] =3D '\0';