55 lines
1.8 KiB
Diff
55 lines
1.8 KiB
Diff
From 69f3eefe8e71ce7848f534eaa6c3811c82de607c Mon Sep 17 00:00:00 2001
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Message-Id: <69f3eefe8e71ce7848f534eaa6c3811c82de607c.1601675152.git.zanussi@kernel.org>
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In-Reply-To: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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References: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Sat, 1 Apr 2017 12:50:59 +0200
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Subject: [PATCH 136/333] rtmutex: Make lock_killable work
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.148-rt64.tar.xz
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Locking an rt mutex killable does not work because signal handling is
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restricted to TASK_INTERRUPTIBLE.
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Use signal_pending_state() unconditionaly.
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Cc: stable-rt@vger.kernel.org
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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kernel/locking/rtmutex.c | 19 +++++++------------
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1 file changed, 7 insertions(+), 12 deletions(-)
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diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
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index a4b2af7718f8..f058bb976212 100644
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--- a/kernel/locking/rtmutex.c
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+++ b/kernel/locking/rtmutex.c
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@@ -1201,18 +1201,13 @@ __rt_mutex_slowlock(struct rt_mutex *lock, int state,
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if (try_to_take_rt_mutex(lock, current, waiter))
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break;
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- /*
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- * TASK_INTERRUPTIBLE checks for signals and
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- * timeout. Ignored otherwise.
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- */
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- if (likely(state == TASK_INTERRUPTIBLE)) {
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- /* Signal pending? */
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- if (signal_pending(current))
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- ret = -EINTR;
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- if (timeout && !timeout->task)
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- ret = -ETIMEDOUT;
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- if (ret)
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- break;
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+ if (timeout && !timeout->task) {
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+ ret = -ETIMEDOUT;
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+ break;
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+ }
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+ if (signal_pending_state(state, current)) {
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+ ret = -EINTR;
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+ break;
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}
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raw_spin_unlock_irq(&lock->wait_lock);
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--
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2.17.1
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