Linux-EROFS Archive on lore.kernel.org
 help / color / Atom feed
From: Gao Xiang via Linux-erofs <linux-erofs@lists.ozlabs.org>
To: linux-erofs@lists.ozlabs.org
Cc: LKML <linux-kernel@vger.kernel.org>,
	Maksym Planeta <mplaneta@os.inf.tu-dresden.de>
Subject: [PATCH] erofs: remove WQ_CPU_INTENSIVE flag from unbound wq's
Date: Fri, 31 Jul 2020 10:40:49 +0800
Message-ID: <20200731024049.16495-1-hsiangkao@aol.com> (raw)
In-Reply-To: <20200731024049.16495-1-hsiangkao.ref@aol.com>

From: Gao Xiang <hsiangkao@redhat.com>

The documentation [1] says that WQ_CPU_INTENSIVE is "meaningless" for
unbound wq. I remove this flag from places where unbound queue is
allocated. This is supposed to improve code readability.

[1] https://www.kernel.org/doc/html/latest/core-api/workqueue.html#flags
Signed-off-by: Maksym Planeta <mplaneta@os.inf.tu-dresden.de>
[Gao Xiang: since the original treewide patch [2] hasn't been merged
            yet, handling the EROFS part only for the next cycle. ]
[2] https://lore.kernel.org/r/20200213141823.2174236-1-mplaneta@os.inf.tu-dresden.de
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
---
 fs/erofs/zdata.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 80bf09c4de09..9ac2723c11bf 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -43,13 +43,13 @@ void z_erofs_exit_zip_subsystem(void)
 static inline int z_erofs_init_workqueue(void)
 {
 	const unsigned int onlinecpus = num_possible_cpus();
-	const unsigned int flags = WQ_UNBOUND | WQ_HIGHPRI | WQ_CPU_INTENSIVE;
 
 	/*
 	 * no need to spawn too many threads, limiting threads could minimum
 	 * scheduling overhead, perhaps per-CPU threads should be better?
 	 */
-	z_erofs_workqueue = alloc_workqueue("erofs_unzipd", flags,
+	z_erofs_workqueue = alloc_workqueue("erofs_unzipd",
+					    WQ_UNBOUND | WQ_HIGHPRI,
 					    onlinecpus + onlinecpus / 4);
 	return z_erofs_workqueue ? 0 : -ENOMEM;
 }
-- 
2.24.0


       reply index

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200731024049.16495-1-hsiangkao.ref@aol.com>
2020-07-31  2:40 ` Gao Xiang via Linux-erofs [this message]
2020-07-31  3:48   ` Chao Yu

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200731024049.16495-1-hsiangkao@aol.com \
    --to=linux-erofs@lists.ozlabs.org \
    --cc=hsiangkao@aol.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mplaneta@os.inf.tu-dresden.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-EROFS Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-erofs/0 linux-erofs/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-erofs linux-erofs/ https://lore.kernel.org/linux-erofs \
		linux-erofs@lists.ozlabs.org linux-erofs@ozlabs.org
	public-inbox-index linux-erofs

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.ozlabs.lists.linux-erofs


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git