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Date: Thu, 11 Jul 2019 19:43:59 -0400
From: "Joel Fernandes (Google)" <joel@...lfernandes.org>
To: linux-kernel@...r.kernel.org
Cc: "Joel Fernandes (Google)" <joel@...lfernandes.org>,
Alexey Kuznetsov <kuznet@....inr.ac.ru>,
Bjorn Helgaas <bhelgaas@...gle.com>,
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"David S. Miller" <davem@...emloft.net>,
edumazet@...gle.com,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
"H. Peter Anvin" <hpa@...or.com>,
Ingo Molnar <mingo@...hat.com>,
Josh Triplett <josh@...htriplett.org>,
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kernel-hardening@...ts.openwall.com,
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"Rafael J. Wysocki" <rjw@...ysocki.net>,
Rasmus Villemoes <rasmus.villemoes@...vas.dk>,
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Tejun Heo <tj@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
will@...nel.org,
x86@...nel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT))
Subject: [PATCH v1 4/6] workqueue: Convert for_each_wq to use built-in list check
list_for_each_entry_rcu now has support to check for RCU reader sections
as well as lock. Just use the support in it, instead of explictly
checking in the caller.
Signed-off-by: Joel Fernandes (Google) <joel@...lfernandes.org>
---
kernel/workqueue.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 9657315405de..91ed7aca16e5 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -424,9 +424,8 @@ static void workqueue_sysfs_unregister(struct workqueue_struct *wq);
* ignored.
*/
#define for_each_pwq(pwq, wq) \
- list_for_each_entry_rcu((pwq), &(wq)->pwqs, pwqs_node) \
- if (({ assert_rcu_or_wq_mutex(wq); false; })) { } \
- else
+ list_for_each_entry_rcu((pwq), &(wq)->pwqs, pwqs_node, \
+ lock_is_held(&(wq->mutex).dep_map))
#ifdef CONFIG_DEBUG_OBJECTS_WORK
--
2.22.0.410.gd8fdbe21b5-goog
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