From mboxrd@z Thu Jan 1 00:00:00 1970 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 C6A10288515 for ; Sat, 22 Nov 2025 19:10:56 +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=1763838658; cv=none; b=ePgs15/CKsBfhbzfeJ/Om/OVxcrziy/ByykDmsQT2eMncNBKBdsjKr09Dz46IDxakzVKFn89EivHh/5Veyso0V16mWinQAbw5x+XCWsTME3EQAnfYAiOA9PPRgzl6vAzVfX3rpRVpHy30xVuh3OLdPWL8t8qQBOrnuU9zDr/DFI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763838658; c=relaxed/simple; bh=O0LlL9Wq4juRoFwYhlwtU2urKiu9gCg+k6YyvZp6H7I=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=k13Qa2nJFkg0AtfRKNXcYonWrCXSPumLB7VwcPpjWsCbZNq82hu1wF5DGExY9+fB3/gmMvYJNh2mBlKEOn96sed8JjA20/yJrBchrG1nOhUP8JB5ZNmgBH9+nCz3olDRR4MB+tcbjJ1+SUHMUecQqvxS6Jswt+xVCy9VS1F0EmE= 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=RR0612b/; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=bZBPl4X3; 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="RR0612b/"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="bZBPl4X3" From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1763838654; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=vsVuBZxzcHtSme0Bqofjtoy56ogZFmJvWf3hPKtUWiM=; b=RR0612b/Vl65SYL/LCJCcLPREuIU2XJhk3BpdsnD5wFTI7pTV2rqRIsM8rVVsFfxnDxUzd Dld7QP8IPJb81Jq4ZcHwBGy9HFfzZt2fEJ1e3TPckrmLWh3nfv3B4+GgWA++/snN8h2qP5 xjuuvbdK8WqwKYNwfoa6AOuVA7Zk8kyCgL5mfk7zL8VsTzyIC0rAy+lxbtvsqG2fZ+hZdJ jFADevBCNHkLLGKGzAJAcBu04a+1zH1MJoVmLUdBKepAs+dEWdW5B1tMg6GsKUJ3aGblMA 1YdQzUyohj9rOJkc/5r+aSAnADjs8laF4H5Rv/MPMO2mVojqehw8LkpUYwZfzg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1763838654; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=vsVuBZxzcHtSme0Bqofjtoy56ogZFmJvWf3hPKtUWiM=; b=bZBPl4X3hW7Qeqts4+z6+/7p4QRf0Za99u/3dUy2nIhysue/NlT2N+jt5xBji0Fq470+2I yDpObrSDd3mOflAQ== To: paulmck@kernel.org, Marek Szyprowski Cc: LKML , Peter Zijlstra , Gabriele Monaco , Mathieu Desnoyers , Michael Jeanson , Jens Axboe , "Gautham R. Shenoy" , Florian Weimer , Tim Chen , Yury Norov , Shrikanth Hegde Subject: Re: [patch V5 09/20] cpumask: Cache num_possible_cpus() In-Reply-To: References: <20251119171016.815482037@linutronix.de> <20251119172549.578653738@linutronix.de> <89c7106e-a431-443a-9527-3d5fbce77fe1@samsung.com> Date: Sat, 22 Nov 2025 20:10:52 +0100 Message-ID: <87pl99j32b.ffs@tglx> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Sat, Nov 22 2025 at 10:47, Paul E. McKenney wrote: > On Fri, Nov 21, 2025 at 11:56:44PM +0100, Marek Szyprowski wrote: >> On 19.11.2025 18:27, Thomas Gleixner wrote: > My current guess is that the snapshot is taken too early, though I would > be more confident of that if it happened on TREE01, in which CPUs come > online quite late. https://lore.kernel.org/all/87zf8ehyf7.ffs@tglx