From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 71A7A1E48A; Mon, 28 Oct 2024 13:13:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730121233; cv=none; b=VBjouISz96jXuW5hoAncmQgDBLFG4ckwsLjoFrsLJfykvwNPRn44UY9lS45eanvpQLNEoAz8BzfnuRvNOKS1VCmjfUNzdXLNQYXVBq39RmJAqF4VbUud5L1RH06euk/d1ue2+0vNjQgYNjP7tKegcmlUWFve70LqWFARFS4LhME= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730121233; c=relaxed/simple; bh=oakMzO7Cn0cA3jBZvy82va2r/vv8HzUeFj/p9lV6Mb8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=V2KKmEx2hI1Mx2/1Hpu7h3utkKoWkGGu41ayeRxM1FTpaCgqwNoXyQiNKqDh6bNe1l1Du7q59LFtUiO9sZdeQeOqQ2yet768ma2AW+a9sUfzdKj0rIbCqhaXnBUU+A15WXazuKPC7oMavKwiODM4cXc9Ce4EqRzWUAdhSMlyXQQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CcoFZ3Sb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CcoFZ3Sb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 552DDC4CEC3; Mon, 28 Oct 2024 13:13:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730121233; bh=oakMzO7Cn0cA3jBZvy82va2r/vv8HzUeFj/p9lV6Mb8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=CcoFZ3SbHQmKt0HKeyFXNomW/+VGn1JtXzzrDCLw+eH4tJn6ZdaPc4SR7UR2CyMbM lo7NTGFVv316wMdiQkIdb1rovC+s7ABGNn49GBqryhdNLtJ+DdYpAGPjy8VDatNsJP eeFvN35SE7chB10bB3BPoqcoNJ4g8qK5CSf6FJtIMXVYI1omCZhQ9zMD3tgPNWMKTn 0qIwUU9Lfe2TeshkwlllhSCR/s9uxYC3ECFvqHNbL6JMAUOQ/NP2cdMX6lH1e+BVIV 5KcEAv2co5dVvk7tRYtQfws9OSzaSPHnCCuZTvJGFM93iNS++qI6DAJYiQrBEeWnUH juGzxODPr1zXw== Date: Mon, 28 Oct 2024 14:13:49 +0100 From: Frederic Weisbecker To: Sebastian Andrzej Siewior Cc: linux-kernel@vger.kernel.org, rcu@vger.kernel.org, "Paul E. McKenney" , Anna-Maria Behnsen , Davidlohr Bueso , Ingo Molnar , Josh Triplett , Thomas Gleixner Subject: Re: [PATCH v2 2/3] timers: Use __raise_softirq_irqoff() to raise the softirq. Message-ID: References: <20241024150413.518862-1-bigeasy@linutronix.de> <20241024150413.518862-3-bigeasy@linutronix.de> Precedence: bulk X-Mailing-List: rcu@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20241024150413.518862-3-bigeasy@linutronix.de> Le Thu, Oct 24, 2024 at 04:55:50PM +0200, Sebastian Andrzej Siewior a écrit : > As an optimisation use __raise_softirq_irqoff() to raise the softirq. > This is always called from an interrupt handler, interrupts are already > disabled so it can be reduced to just or set softirq flag and let > softirq be invoked on return from interrupt. > > Use __raise_softirq_irqoff() to raise the softirq. > > Signed-off-by: Sebastian Andrzej Siewior Reviewed-by: Frederic Weisbecker