From: Frederic Weisbecker <frederic@kernel.org>
To: "Paul E . McKenney" <paulmck@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Frederic Weisbecker <frederic@kernel.org>,
rcu <rcu@vger.kernel.org>, Uladzislau Rezki <urezki@gmail.com>,
Neeraj Upadhyay <quic_neeraju@quicinc.com>,
Joel Fernandes <joel@joelfernandes.org>,
Giovanni Gherdovich <ggherdovich@suse.cz>
Subject: [PATCH 8/9] rcu: Make segcblist flags test strict
Date: Wed, 31 May 2023 12:17:35 +0200 [thread overview]
Message-ID: <20230531101736.12981-9-frederic@kernel.org> (raw)
In-Reply-To: <20230531101736.12981-1-frederic@kernel.org>
While testing several flags at once, make sure that all of them verify
the test. This will be necessary to check if an rdp is (de-)offloading.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
---
kernel/rcu/rcu_segcblist.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/rcu/rcu_segcblist.h b/kernel/rcu/rcu_segcblist.h
index 620ca48e782b..36245efdf800 100644
--- a/kernel/rcu/rcu_segcblist.h
+++ b/kernel/rcu/rcu_segcblist.h
@@ -70,7 +70,7 @@ static inline void rcu_segcblist_clear_flags(struct rcu_segcblist *rsclp,
static inline bool rcu_segcblist_test_flags(struct rcu_segcblist *rsclp,
int flags)
{
- return READ_ONCE(rsclp->flags) & flags;
+ return (READ_ONCE(rsclp->flags) & flags) == flags;
}
/*
--
2.40.1
next prev parent reply other threads:[~2023-05-31 10:18 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-31 10:17 [PATCH 0/9] rcu: Support for lazy callbacks on !CONFIG_RCU_NOCB_CPU Frederic Weisbecker
2023-05-31 10:17 ` [PATCH 1/9] rcu: Assume IRQS disabled from rcu_report_dead() Frederic Weisbecker
2023-06-02 22:51 ` Joel Fernandes
2023-05-31 10:17 ` [PATCH 2/9] rcu: Use rcu_segcblist_segempty() instead of open coding it Frederic Weisbecker
2023-06-02 23:00 ` Joel Fernandes
2023-07-05 12:21 ` Frederic Weisbecker
2023-06-13 8:44 ` Zhuo, Qiuxu
2023-05-31 10:17 ` [PATCH 3/9] rcu: Rename jiffies_till_flush to jiffies_lazy_flush Frederic Weisbecker
2023-06-01 17:15 ` kernel test robot
2023-06-01 17:15 ` kernel test robot
2023-06-01 22:40 ` kernel test robot
2023-05-31 10:17 ` [PATCH 4/9] rcu: Introduce lazy queue's own qhimark Frederic Weisbecker
2023-06-03 1:23 ` Joel Fernandes
2023-07-05 12:45 ` Frederic Weisbecker
2023-05-31 10:17 ` [PATCH 5/9] rcu: Add rcutree.lazy_enabled boot parameter Frederic Weisbecker
2023-06-13 6:57 ` Zhuo, Qiuxu
2023-07-05 12:42 ` Frederic Weisbecker
2023-05-31 10:17 ` [PATCH 6/9] rcu/nocb: Rename was_alldone to was_pending Frederic Weisbecker
2023-05-31 10:17 ` [PATCH 7/9] rcu: Implement lazyness on the main segcblist level Frederic Weisbecker
2023-05-31 10:17 ` Frederic Weisbecker [this message]
2023-05-31 10:17 ` [PATCH 9/9] rcu: Support lazy callbacks with CONFIG_RCU_NOCB_CPU=n Frederic Weisbecker
2023-07-05 12:41 ` [PATCH 0/9] rcu: Support for lazy callbacks on !CONFIG_RCU_NOCB_CPU Frederic Weisbecker
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