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 C7A8D246B16; Wed, 11 Dec 2024 18:51:57 +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=1733943117; cv=none; b=A4H5otV5QniULrVl3OBZaS05Ev5TzF0OOcnTwTPtIazoWpunRrCpktZIfflbs1dmd+GNHJAX4oZNLuUdjKwSclgj4VAkFfYO8hf2ZWcknEgWbyWjM7KhFOT3xraqcaGhAUePdH2a53ABd+QaJp1ze7zVub6S8q+3AjUk6OOp04M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733943117; c=relaxed/simple; bh=NjxKBf/EuqTHkgb6dy5bQgUiQRcG4xAVXlpY5Sdvc4k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qQtvwgphtCeC8dxAeH290KmShQe/t/k2vMZWhDntXVlBwMdcZVTfKZknrKjCxb3gLpsQ0bcDaRTO5Ju7dSYhxbd0Q2XlZwAgnyBjX/lWtlvicFAjZLuKGunm26gyr0mFTJcQtBbkEJ+0nllXrBH+rDKyZSeBqxzafxnRknJ5h4E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Hluyqw1D; 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="Hluyqw1D" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5624AC4CED2; Wed, 11 Dec 2024 18:51:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733943117; bh=NjxKBf/EuqTHkgb6dy5bQgUiQRcG4xAVXlpY5Sdvc4k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Hluyqw1DT5RKa+9tzJwB80Zsv/ijIJ2TV89nr/AqDHdqt0AWAPP5awu2Mj9gqfMNi 7VOdfjqy+spQVM09wZBqt0v2gIqhEU4f71EDeGbxd791ILKnUbdHjXhYG0ZfWCIWgC L2KiBXPSLQbCT1XwY1VmUG0doBxM7FRPmndMMPxMAIZ4530qHrNCNCpS9/lbINTiJs CT5KFlg5qQU6+VW+eAGKrfGZLxJ1yJv6x0QNaIOOsvc9+5DqE9CW+f+DZT1wBlBYiI IpauYLjR6eNZC1dFOXUFnXneAbqnHCENoGGJ7E6ey+yjCwOT8xHPZAHOhQXPUW9TPo PyV0Jt28fPE4A== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ming Lei , Reinette Chatre , Fenghua Yu , Peter Newman , Babu Moger , Luck Tony , Jens Axboe , Sasha Levin , linux-block@vger.kernel.org Subject: [PATCH AUTOSEL 6.12 35/36] blk-mq: register cpuhp callback after hctx is added to xarray table Date: Wed, 11 Dec 2024 13:49:51 -0500 Message-ID: <20241211185028.3841047-35-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241211185028.3841047-1-sashal@kernel.org> References: <20241211185028.3841047-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.12.4 Content-Transfer-Encoding: 8bit From: Ming Lei [ Upstream commit 4bf485a7db5d82ddd0f3ad2b299893199090375e ] We need to retrieve 'hctx' from xarray table in the cpuhp callback, so the callback should be registered after this 'hctx' is added to xarray table. Cc: Reinette Chatre Cc: Fenghua Yu Cc: Peter Newman Cc: Babu Moger Cc: Luck Tony Signed-off-by: Ming Lei Tested-by: Tony Luck Link: https://lore.kernel.org/r/20241206111611.978870-2-ming.lei@redhat.com Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- block/blk-mq.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index b4fba7b398e5b..c4012cb3adbf1 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -3825,16 +3825,11 @@ static int blk_mq_init_hctx(struct request_queue *q, { hctx->queue_num = hctx_idx; - if (!(hctx->flags & BLK_MQ_F_STACKING)) - cpuhp_state_add_instance_nocalls(CPUHP_AP_BLK_MQ_ONLINE, - &hctx->cpuhp_online); - cpuhp_state_add_instance_nocalls(CPUHP_BLK_MQ_DEAD, &hctx->cpuhp_dead); - hctx->tags = set->tags[hctx_idx]; if (set->ops->init_hctx && set->ops->init_hctx(hctx, set->driver_data, hctx_idx)) - goto unregister_cpu_notifier; + goto fail; if (blk_mq_init_request(set, hctx->fq->flush_rq, hctx_idx, hctx->numa_node)) @@ -3843,6 +3838,11 @@ static int blk_mq_init_hctx(struct request_queue *q, if (xa_insert(&q->hctx_table, hctx_idx, hctx, GFP_KERNEL)) goto exit_flush_rq; + if (!(hctx->flags & BLK_MQ_F_STACKING)) + cpuhp_state_add_instance_nocalls(CPUHP_AP_BLK_MQ_ONLINE, + &hctx->cpuhp_online); + cpuhp_state_add_instance_nocalls(CPUHP_BLK_MQ_DEAD, &hctx->cpuhp_dead); + return 0; exit_flush_rq: @@ -3851,8 +3851,7 @@ static int blk_mq_init_hctx(struct request_queue *q, exit_hctx: if (set->ops->exit_hctx) set->ops->exit_hctx(hctx, hctx_idx); - unregister_cpu_notifier: - blk_mq_remove_cpuhp(hctx); + fail: return -1; } -- 2.43.0