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Mon, 30 Nov 2020 06:33:45 -0500 X-MC-Unique: wVbiaMoQOmWTtnfaUPPtDg-1 X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R121e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04400; MF=jefflexu@linux.alibaba.com; NM=1; PH=DS; RN=3; SR=0; TI=SMTPD_---0UH0DVk8_1606736019 Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0UH0DVk8_1606736019) by smtp.aliyun-inc.com(127.0.0.1); Mon, 30 Nov 2020 19:33:40 +0800 From: Jeffle Xu To: snitzer@redhat.com Date: Mon, 30 Nov 2020 19:33:39 +0800 Message-Id: <20201130113339.42817-1-jefflexu@linux.alibaba.com> MIME-Version: 1.0 X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-loop: dm-devel@redhat.com X-Mailman-Approved-At: Tue, 01 Dec 2020 06:23:42 -0500 Cc: joseph.qi@linux.alibaba.com, dm-devel@redhat.com Subject: [dm-devel] [PATCH] dm crypt: export sysfs of kcryptd workqueue X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com It should be helpful to export sysfs of "kcryptd" workqueue in some cases, such as setting specific CPU affinity of the workqueue. Besides, also tweak the name format a little. The slash inside a directory name will be translate into exclamation mark, such as /sys/devices/virtual/workqueue/'kcryptd!253:0'. Signed-off-by: Jeffle Xu --- drivers/md/dm-crypt.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 392337f16ecf..6b4c1f674239 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -3166,11 +3166,12 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) } if (test_bit(DM_CRYPT_SAME_CPU, &cc->flags)) - cc->crypt_queue = alloc_workqueue("kcryptd/%s", WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM, + cc->crypt_queue = alloc_workqueue("kcryptd-%s", WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM, 1, devname); else - cc->crypt_queue = alloc_workqueue("kcryptd/%s", - WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM | WQ_UNBOUND, + cc->crypt_queue = alloc_workqueue("kcryptd-%s", + WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM | + WQ_UNBOUND | WQ_SYSFS, num_online_cpus(), devname); if (!cc->crypt_queue) { ti->error = "Couldn't create kcryptd queue";