From nobody Wed Feb 11 03:02:09 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 BEE7F205ADD for ; Mon, 3 Feb 2025 13:59:46 +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=1738591188; cv=none; b=lIq1JQtMFnkuuqoxmI2c9N6ErC1jQafLSLmMQTuomj8YhjpY+e30HXQNZ17dLd395KUSSJ6o6vHavTMlYIBCRMYMyUUMSdBcWTnKxZEtpx/+BIzIXF/9o5aUpbqzM/bj9c5rV7XQ7UtDnVqAcX8vhIXPkCPvp/2U6+i0cl2D90M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738591188; c=relaxed/simple; bh=tQ0PK3PxF+Mh6rd67NIZ/6W+nOrnjXuL8xhzSXA7qDk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ikgN8JUloE48B+EVnzIt3K3SFG79x6xGxdt+Q2GAKIob/NNzSRcznd5D7aTE8LVxKFwYS2FXRakpEyGjKO5oLBm5FSS531Mgt/ZHrPGzDd2a7JH968KUVN1YJnGNazD9U1uBhYB/YKq0340IHkvk9KTVQ9l7VDfnHULTLLrEUok= 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=IIYlNcfU; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=X2H94ubr; 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="IIYlNcfU"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="X2H94ubr" From: Sebastian Andrzej Siewior DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1738591185; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lA7nLRMSPeonOj1Bx6zFLlkUTG+IdFmNM3dz0lX9bDA=; b=IIYlNcfUI6QrlaOEvYeV56VgsuxQQtuxGVrnKRXL8gJNBVupG6BKtcik49pQ7U/IMRr3yT jkYMJu6q4myqfSEiN9UpkPnqg5tuhmnyleUw5p+1fhmxa+RtSvapfYOkZBiaXsfVzgJwEC 8yn//Fu7puA+bOugbmEMSTDO2gQZtbzUV2Y0OdfxKwgpfVwz6xYGEB1I9tDPuLnTjouvho rYvbQUW5AcHFSueHYMJMe0eFHzApw3iN2gt5Htt2fKrZqP/ewRQNETkNUkKbsemIX/e3j5 j5UpA5oK8YUp0D7ujvKlvxCpRLtMZxBHfkavdK3gwWRsmu6oYcEi56N0P/JMZQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1738591185; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lA7nLRMSPeonOj1Bx6zFLlkUTG+IdFmNM3dz0lX9bDA=; b=X2H94ubrQ8HuUlmEJOolniCAcYEDtNAVVIciDNc87m0QUJ58vFzxiOPQgL5HRPf281c1zN FFKFxvdCrdGG9QCQ== To: linux-kernel@vger.kernel.org Cc: =?UTF-8?q?Andr=C3=A9=20Almeida?= , Darren Hart , Davidlohr Bueso , Ingo Molnar , Juri Lelli , Peter Zijlstra , Thomas Gleixner , Valentin Schneider , Waiman Long , Sebastian Andrzej Siewior Subject: [PATCH v8 02/15] futex: Create helper function to initialize a hash slot. Date: Mon, 3 Feb 2025 14:59:22 +0100 Message-ID: <20250203135935.440018-3-bigeasy@linutronix.de> In-Reply-To: <20250203135935.440018-1-bigeasy@linutronix.de> References: <20250203135935.440018-1-bigeasy@linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Factor out the futex_hash_bucket initialisation into a helpr function. The helper function will be used in a follow up patch implementing process private hash buckets. Signed-off-by: Sebastian Andrzej Siewior --- kernel/futex/core.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/kernel/futex/core.c b/kernel/futex/core.c index ebdd76b4ecbba..d1d3c7b358b23 100644 --- a/kernel/futex/core.c +++ b/kernel/futex/core.c @@ -1124,6 +1124,13 @@ void futex_exit_release(struct task_struct *tsk) futex_cleanup_end(tsk, FUTEX_STATE_DEAD); } =20 +static void futex_hash_bucket_init(struct futex_hash_bucket *fhb) +{ + atomic_set(&fhb->waiters, 0); + plist_head_init(&fhb->chain); + spin_lock_init(&fhb->lock); +} + static int __init futex_init(void) { unsigned int futex_shift; @@ -1141,11 +1148,8 @@ static int __init futex_init(void) futex_hashsize, futex_hashsize); futex_hashsize =3D 1UL << futex_shift; =20 - for (i =3D 0; i < futex_hashsize; i++) { - atomic_set(&futex_queues[i].waiters, 0); - plist_head_init(&futex_queues[i].chain); - spin_lock_init(&futex_queues[i].lock); - } + for (i =3D 0; i < futex_hashsize; i++) + futex_hash_bucket_init(&futex_queues[i]); =20 return 0; } --=20 2.47.2