diff options
Diffstat (limited to 'debian/patches-rt/0272-Revert-futex-Ensure-lock-unlock-symetry-versus-pi_lo.patch')
| -rw-r--r-- | debian/patches-rt/0272-Revert-futex-Ensure-lock-unlock-symetry-versus-pi_lo.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/debian/patches-rt/0272-Revert-futex-Ensure-lock-unlock-symetry-versus-pi_lo.patch b/debian/patches-rt/0272-Revert-futex-Ensure-lock-unlock-symetry-versus-pi_lo.patch new file mode 100644 index 000000000..82f8bb5db --- /dev/null +++ b/debian/patches-rt/0272-Revert-futex-Ensure-lock-unlock-symetry-versus-pi_lo.patch @@ -0,0 +1,35 @@ +From 32f4aadb8254fd22b687cf1631c4859a2bf1b6bc Mon Sep 17 00:00:00 2001 +From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Date: Wed, 26 Jun 2019 17:44:13 +0200 +Subject: [PATCH 272/347] Revert "futex: Ensure lock/unlock symetry versus + pi_lock and hash bucket lock" +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz + +[ Upstream commit 6a773b70cf105b46298ed3b44e77c102ce31d9ec ] + +Drop the RT fixup, the futex code will be changed to avoid the need for +the workaround. + +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> +--- + kernel/futex.c | 2 -- + 1 file changed, 2 deletions(-) + +diff --git a/kernel/futex.c b/kernel/futex.c +index a5a263a3efbf..3449a716a378 100644 +--- a/kernel/futex.c ++++ b/kernel/futex.c +@@ -962,9 +962,7 @@ static void exit_pi_state_list(struct task_struct *curr) + if (head->next != next) { + /* retain curr->pi_lock for the loop invariant */ + raw_spin_unlock(&pi_state->pi_mutex.wait_lock); +- raw_spin_unlock_irq(&curr->pi_lock); + spin_unlock(&hb->lock); +- raw_spin_lock_irq(&curr->pi_lock); + put_pi_state(pi_state); + continue; + } +-- +2.36.1 + |