From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 022CC419304 for ; Thu, 27 Aug 2026 19:48:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787860121; cv=none; b=tpGkfSfxHEgxk7LzMYwEQPVlXaJ8QWXSavmQoDFHrQr4ewCh2xmKWPfmqlz0Kb7fLz3iI1Gba/90zrwpaNNYkCwp93mg7goPXAIMHDxrd+yqkE/ApYcL+CRMhi8HmDo5FOiaGU0rbnYSg0pLr0mv5z5mWa/TazgJ20hY4Rt+tT0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787860121; c=relaxed/simple; bh=OLHUbxJ4td4FYpJO9Zdig60JX5sar7VpKjkhycz7buQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ozAJuhRvfjAck5DHPnZuwYfyGcWvo6l/HUXhP9pS30hoiMvnHmSM11TskxAhabQ9CJVEAlzzxAtmoEgnmqAaN9N3eCPZNpnVwndRMrs3UCtZv3mGjYUTIOh8N1UysgX74y+0XObAaG6LHelJ7loVU7sN5RKSlIfG7+dsqLPfHB4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Vonuzv0G; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Vonuzv0G" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FE571F000E9; Thu, 27 Aug 2026 19:48:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787860119; bh=MmwHgm9stMigjp1zMPN7HnPtZrgUd+r2zmwOI2wbvA4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Vonuzv0GCmaxYtthwGZO4i8AU0Vram97/e15RjhT0Qm+btU7eexrtDUbc+s/NYu4Z oPy1u4+efqqjKVDAHQ40Kx3Nk8zLb8rnc/1uLgaMlzCP3FvjdOXHvyvFTXmTirAOIP 0W14lJIkCzofDddTOsisr6i2SNlF8aqLvUJDWGnQmc1N4JTstWkcJO3u+wpN5sV4dt ioHTANq0Wfd2JsJ0wm6cJzNhTCEWCfLRIe+Mw+/ihykOJuIHgNicz7s/6GXhIx0E9n 83BgQSYnZpvhhjhLworH2XmLz5JBc64YR6L3pt3rMwMZP5f/HZaO71aNhn3K3X6PbP jSDIpFslpnpfg== Received: from phl-compute-12.internal (phl-compute-12.internal [10.202.2.52]) by mailfauth.phl.internal (Postfix) with ESMTP id 5A69DF40066; Thu, 27 Aug 2026 15:48:38 -0400 (EDT) Received: from phl-frontend-04 ([10.202.2.163]) by phl-compute-12.internal (MEProxy); Thu, 27 Aug 2026 15:48:38 -0400 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: dmFkZTE0VPwVxt2mk7rAHHr8B0o64NQYihVqGWyd9wGAQhTBpkxqC94xAMBmtNXIDwVZ1o 7uk0aiotsbFAsGCf31o5AJX1EIaqgqzmKcwkMh7Ng7H6RhTbznMafsDd5G+3J70mF19Mwv 0Y6Z8+aDREls+XWTTvE1gwP8S0f4pzKxbLTV1U6fXFzZ5glUIvRZyEHcJE36GJvjjgKqQW w2H+HK3QdsB1lVIW1VLBF6OQfBPaO5npPdp+dNT9YSI9F1AhI+XhfIMg++KzoosZr1Kzlz KY7bsdm2ZKGe9kQiJ8nKw+dZqOyCwlIZIKahjAc4D2WklPYyaFphZ4CGycv85QL8AT1DSl fwp/NOyV2Xr6mATW+N8GTEPQQeQ9TbmHuw/aE5/UHsmSEGYGu8tBrlrVB6vlOCxkkw1GPk FWRXk6Tyyj6906nDhhaQ5lUOKAnJEB1t820el+xGOTR1f4tWgV4dAXeut+IwP4tbYxy55B bT09ca23Gz6sDPXLCAoREnnNWNWivfdNqqAX6sIVxExs79AmIdB27zsqTHx3YuGejtiJtF /nslgauYWDlUNTMWla2bSVYBfRh9KdiXHv3Bp7A6jbBVTdElPEDj+3c2Zy/+U6tflmDQ3m l/IODSOkp6iSBBr/98NWlUcgopC4yEsfiqVCLScG1aDqJRq98OUzevGPPdrw X-ME-Proxy: Feedback-ID: i8dbe485b:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 27 Aug 2026 15:48:37 -0400 (EDT) From: Boqun Feng To: tglx@kernel.org Cc: "Peter Zijlstra (Intel)" , Lyude Paul , Sebastian Andrzej Siewior , Joel Fernandes , linux-kernel@vger.kernel.org, Boqun Feng Subject: [PATCH] preempt: Remove hardirq_disable_count() Date: Thu, 27 Aug 2026 12:48:35 -0700 Message-ID: <20260827194835.38968-1-boqun@kernel.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260827181106.30090-1-boqun@kernel.org> References: <20260827181106.30090-1-boqun@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit It turns out the previous usage of hardirq_disable_count() in __irq_exit_rcu() would cause softirq pending issues. Without that usage, hardirq_disable_count() doesn't need to exist, so remove it. Signed-off-by: Boqun Feng --- include/linux/preempt.h | 1 - 1 file changed, 1 deletion(-) diff --git a/include/linux/preempt.h b/include/linux/preempt.h index 8299657f0f86..6d2fedbd6758 100644 --- a/include/linux/preempt.h +++ b/include/linux/preempt.h @@ -168,7 +168,6 @@ static __always_inline unsigned char interrupt_context_level(void) #define in_softirq() (softirq_count()) #define in_interrupt() (irq_count()) -#define hardirq_disable_count() ((preempt_count() & HARDIRQ_DISABLE_MASK) >> HARDIRQ_DISABLE_SHIFT) #define hardirq_disable_enter() __preempt_count_add_return(HARDIRQ_DISABLE_OFFSET) #define hardirq_disable_exit() __preempt_count_sub_return(HARDIRQ_DISABLE_OFFSET) -- 2.50.1 (Apple Git-155)