From patchwork Wed Oct 30 16:51:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Lobakin X-Patchwork-Id: 13856868 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 D337621503E; Wed, 30 Oct 2024 16:53:33 +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=1730307219; cv=none; b=VosBSbKYXAcd8Rewv3yhor36aHXnPxHnccULPmuaj2Zj0EzCyGvk04TLHPnEP88v8jJkS7CsuoB1VFQEAysM3y8dQWv99nJSRBIsBuCXBtnXYx2H9BrGiA3fGMRTS/+m6nbjPILnYH10YsV4aoGArw0lvTxOdT5vSUQbAjqalDU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730307219; c=relaxed/simple; bh=4IC24vmZl6WDvgMu457OvjBdl317Y6deaK2gkmSPzBk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Xp7AcEjzUrdj3O44uS4SvCOpcViFaBUqT5GfqShn6PvZxizEsVp2z280+ncSgQXrXF4Z53qY5kg1y8lkpyL94UjZXNo0qLBFvNi1UMXUIyYhEZ/lKsKsq+BcuHWzofkKH/ZKUNL0aSW1xHeGQCtG8BZc2NfNtq7NA2bbbxjdJN8= 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=PQpsGetu; 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="PQpsGetu" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1730307214; x=1761843214; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4IC24vmZl6WDvgMu457OvjBdl317Y6deaK2gkmSPzBk=; b=PQpsGetudLQEvkIVDPOLgCdAU3ZmwUUIS9932qb/olgAeFoxqGYFUmMH A6OJAaSKortCHpeejnDYpwdWIAU14+jbDt5nonilDmsLctzvI+P7bP0M3 lBoz9nDFgpRfYypk6UQyVLImWnK5nADNIX7VqJ3A3ptzqI0O+5ZNngAic dcfcT2n8lnGMkiHMPO5p1FBXnNWtCe0gozI+IhXS7wh3/Ph8Eq+bV/xUr rAzlZBnLehP4mKqmSM2qVakbVgCi+yad/5zxdSXcl1O491N3to4vrWJKx 53aF+1z5jSz3klYxQeFK9elD+Q6jF4UXP8NTLfwtwJ2SSTB+XnbXmZcef g==; X-CSE-ConnectionGUID: /7WIL5u7SviqIPlzoIUlUg== X-CSE-MsgGUID: jGjZ9hEuSc+0JEKD794j2A== X-IronPort-AV: E=McAfee;i="6700,10204,11241"; a="41389578" X-IronPort-AV: E=Sophos;i="6.11,245,1725346800"; d="scan'208";a="41389578" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Oct 2024 09:53:34 -0700 X-CSE-ConnectionGUID: BOTqG3KhRzyfxhaFYlAdig== X-CSE-MsgGUID: qKryydcOQSWwx42agsRs1g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,245,1725346800"; d="scan'208";a="87524431" Received: from newjersey.igk.intel.com ([10.102.20.203]) by orviesa004.jf.intel.com with ESMTP; 30 Oct 2024 09:53:30 -0700 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 v3 01/18] jump_label: export static_key_slow_{inc,dec}_cpuslocked() Date: Wed, 30 Oct 2024 17:51:44 +0100 Message-ID: <20241030165201.442301-2-aleksander.lobakin@intel.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241030165201.442301-1-aleksander.lobakin@intel.com> References: <20241030165201.442301-1-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,