From patchwork Wed Nov 13 15:24:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Lobakin X-Patchwork-Id: 13873911 X-Patchwork-Delegate: kuba@kernel.org Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) (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 B9762159583; Wed, 13 Nov 2024 15:25:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731511506; cv=none; b=SG8DHC9BhioxTxFNoEOwYZyvnpt/6PzCom7N5stgxZ4xnCu4F76EDKKt1BCpHnYmTVXzVaS9r8/EZcz5j3P81jBEvTp0u7Di//HItIqBwD40tUylD8Btwi/afDi2jZt+bh+xC3mLUGRJtkZpFUwIWzR6qOW8avC2E1CEjPzMvhk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731511506; c=relaxed/simple; bh=4IC24vmZl6WDvgMu457OvjBdl317Y6deaK2gkmSPzBk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lxWUfRWdpqtDPILmrfGgglSN638gGZQTYWgmx3T17Yx3dRl2P3RVCUAMFwc6rMguoLdxtnk12e0YUtL5C20gLEHt704X24J2f9z61CXMdey1J2C//twTMNVoPnEbhwIf01zwENkPuxyOg8J5CA6kvSxZKJIfPFcaQQFzKhvosIs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Uyc45The; arc=none smtp.client-ip=192.198.163.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Uyc45The" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1731511505; x=1763047505; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4IC24vmZl6WDvgMu457OvjBdl317Y6deaK2gkmSPzBk=; b=Uyc45Theof+x41Y5Y1MoVxUnSndbivaQ1/jovdN+Gu3WeDTfKgXle3dn cM4C50gwVcmybYZyB+VumPS2ecJWuhOYj0JZLtowk0SrOzZIdrS4z/FN2 WYS3AovgOYga0jWL5BRR+7msFlCICz0r0MpSWP+hbFRh5TLk7tfKIhJKf ecLKbayLha2g2vsaY1vIjzXcIqIQlMHOkTJ9jf+2gxh6JLwZmrCqOcRxY J0AuvRuECQUTWl9kJgBex7vZrP5/HWNDlKWTMmGuRpqLYgBYUJMaF0Bdo 7P0i0ikBKR+QVHHsBNsABC8+Bp4+8WBf3qsoBAKeOGn1pujdMwAhyZrur A==; X-CSE-ConnectionGUID: 3z4KuQhZRrCNOThV9wX8Kg== X-CSE-MsgGUID: 7RF4IRcSTKC5JYJnP/uY+A== X-IronPort-AV: E=McAfee;i="6700,10204,11254"; a="42799232" X-IronPort-AV: E=Sophos;i="6.12,151,1728975600"; d="scan'208";a="42799232" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Nov 2024 07:25:04 -0800 X-CSE-ConnectionGUID: zwNAkJ6QQ46M3oyxm5WcLA== X-CSE-MsgGUID: DRwNa1nHTsuGjxmqrXvlMQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,151,1728975600"; d="scan'208";a="118726824" Received: from newjersey.igk.intel.com ([10.102.20.203]) by orviesa002.jf.intel.com with ESMTP; 13 Nov 2024 07:25:01 -0800 From: Alexander Lobakin To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Alexander Lobakin , =?utf-8?q?Toke_H=C3=B8?= =?utf-8?q?iland-J=C3=B8rgensen?= , Alexei Starovoitov , Daniel Borkmann , John Fastabend , Andrii Nakryiko , Maciej Fijalkowski , Stanislav Fomichev , Magnus Karlsson , nex.sw.ncis.osdt.itp.upstreaming@intel.com, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v5 01/19] jump_label: export static_key_slow_{inc,dec}_cpuslocked() Date: Wed, 13 Nov 2024 16:24:24 +0100 Message-ID: <20241113152442.4000468-2-aleksander.lobakin@intel.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241113152442.4000468-1-aleksander.lobakin@intel.com> References: <20241113152442.4000468-1-aleksander.lobakin@intel.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org Sometimes, there's a need to modify a lot of static keys or modify the same key multiple times in a loop. In that case, it seems more optimal to lock cpu_read_lock once and then call _cpuslocked() variants. The enable/disable functions are already exported, the refcounted counterparts however are not. Fix that to allow modules to save some cycles. Signed-off-by: Alexander Lobakin --- kernel/jump_label.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/jump_label.c b/kernel/jump_label.c index 93a822d3c468..1034c0348995 100644 --- a/kernel/jump_label.c +++ b/kernel/jump_label.c @@ -182,6 +182,7 @@ bool static_key_slow_inc_cpuslocked(struct static_key *key) } return true; } +EXPORT_SYMBOL_GPL(static_key_slow_inc_cpuslocked); bool static_key_slow_inc(struct static_key *key) { @@ -342,6 +343,7 @@ void static_key_slow_dec_cpuslocked(struct static_key *key) STATIC_KEY_CHECK_USE(key); __static_key_slow_dec_cpuslocked(key); } +EXPORT_SYMBOL_GPL(static_key_slow_dec_cpuslocked); void __static_key_slow_dec_deferred(struct static_key *key, struct delayed_work *work,