From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793903378; b=ZwyvrhtIeji0JhktetKP4iI9Xv9ffBy/gHfGE6lh9fzL+Mb+fJnAunOiYhF0bsmkgDkN 6lBZnirN1Z6uSkUKDvMC+STrNh/pZSkhupa0FNjBwmMf8e+XrPnRfwyhRWhAxfuToFecH FpFHMP/lqYUWTTkIXCbQMtAvZQK9h2NXYHEVT7ZsbXg7tILcAazUtLmbxPAlrFNYm8pRj 1goagWG20cnwdFvYvhPTOT4chEW0YfukcTznGg1DYkrEX4Rv9yLAQaNsFeRtht5Io9fwa GnVx++vHELXt8Bw3TXymarYKmHUQoa/6Aje2egYtfQgfsJGC68qQl6gTmd5ZDdHuVEA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793903378; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=MjOFkYKHObseWphGutQez7ZtlrSwgFCK+YaHdhDjJV0=; b=N5pzMOuinGBteiermrhJkHH/1zjn0Ofgb6Zun7Dd5Ads1d6iCpBoHAq02k7ROQrmz7Q3 vmihMA4i5NjxiWEpozFe8Q71SJ9LvKMaSMXLVY+4gqzKO1Bns6LkOWZxhSYJ0uRTDnoBm RZAIkCvkKekii2aOh37wjMOkuFd/5DdIN8LZGoTnPBuWznVLX7wYW7IHMyNgYHVJ++4TQ 7p7vQCp8/B+Gm+rRzCB90bl4kuDSrBDhor6mjMabZGUcNcGDfo9QgDEL0TvNzXHbCKh0Y rpI2HP+Menbf2f24IXcuXsgj7TieliPgkmAaWBv2Nw7Mw0XJxcqn23IJtS0s/ftWbzw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=BspHo61d; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8DE64606A31B for ; Thu, 5 Nov 2026 18:29:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=BspHo61d Received: by smtp.kernel.org (Postfix) with ESMTPSA id 087BB1F000C1; Thu, 5 Nov 2026 18:29:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793903378; bh=MjOFkYKHObseWphGutQez7ZtlrSwgFCK+YaHdhDjJV0=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=BspHo61dV6lNXE3xwWcIaVe4jp86c13Z112ziS4Fvi4VzAHRnswUghtYJPOuUp5ru ra7bQyPqlTQRMdIOUvWB9zdNQuC3wNU2nZOqcj7FbOmomBUoPNJOYf8t2Tdmt6tTpN W5CwMexGN97wfsutDOpQFiDpq1nORs4HGC8XR6D/gD0craKOuWxmDvNnS30oSCYFMT SWSddhPR0mpjEnXWgTBefdDea9YjhUTDEjlRTpVYJj6c00Q7qYMLjknbnzfWkjqODA f2UiPfdHH6ud6tc0H4RDDiPidcU+FyEtYgPkPzVu4x+J0E3EnbsdSjC9rLvC9KMmdC SjdhnsroGlQHQ== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH 16/47] cpu: Move CPUHP_AP_PERF_XTENSA_STARTING post stop_machine() Reply-To: sashiko-reviews@lists.linux.dev To: "Frederic Weisbecker" Cc: linux-perf-users@vger.kernel.org In-Reply-To: <20261105163045.38862-17-frederic@kernel.org> References: <20261105163045.38862-1-frederic@kernel.org> <20261105163045.38862-17-frederic@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 05 Nov 2026 18:29:37 +0000 X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > Between CPUHP_TEARDOWN_CPU and CPUHP_AP_OFFLINE, stop_machine executes > all the teardown callbacks while stopping all CPUs in the system. This > doesn't mix-up well with running RT or isolated tasks. >=20 > In order to transition smoothly from global stop_machine to finer > grained synchronization between teardown callbacks and the other CPUs, > a new stop machine post function has been introduced to be executed > after the main one with IRQs still disabled while other CPUs can exit > stop_machine(). >=20 > This state doesn't have a teardown callback. >=20 > Move it to post stop_machine() accordingly. >=20 > Signed-off-by: Frederic Weisbecker Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261105163045.3886= 2-1-frederic@kernel.org?part=3D16