diff options
Diffstat (limited to 'debian/patches-rt/0221-sched-Disable-TTWU_QUEUE-on-RT.patch')
| -rw-r--r-- | debian/patches-rt/0221-sched-Disable-TTWU_QUEUE-on-RT.patch | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/debian/patches-rt/0221-sched-Disable-TTWU_QUEUE-on-RT.patch b/debian/patches-rt/0221-sched-Disable-TTWU_QUEUE-on-RT.patch deleted file mode 100644 index 8114bb240..000000000 --- a/debian/patches-rt/0221-sched-Disable-TTWU_QUEUE-on-RT.patch +++ /dev/null @@ -1,38 +0,0 @@ -From 8d7cea5c91830c670105c8e7dca7b3093f5306b8 Mon Sep 17 00:00:00 2001 -From: Thomas Gleixner <tglx@linutronix.de> -Date: Tue, 13 Sep 2011 16:42:35 +0200 -Subject: [PATCH 221/296] sched: Disable TTWU_QUEUE on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.35-rt39.tar.xz - -The queued remote wakeup mechanism can introduce rather large -latencies if the number of migrated tasks is high. Disable it for RT. - -Signed-off-by: Thomas Gleixner <tglx@linutronix.de> ---- - kernel/sched/features.h | 5 +++++ - 1 file changed, 5 insertions(+) - -diff --git a/kernel/sched/features.h b/kernel/sched/features.h -index 68d369cba9e4..296aea55f44c 100644 ---- a/kernel/sched/features.h -+++ b/kernel/sched/features.h -@@ -45,11 +45,16 @@ SCHED_FEAT(DOUBLE_TICK, false) - */ - SCHED_FEAT(NONTASK_CAPACITY, true) - -+#ifdef CONFIG_PREEMPT_RT -+SCHED_FEAT(TTWU_QUEUE, false) -+#else -+ - /* - * Queue remote wakeups on the target CPU and process them - * using the scheduler IPI. Reduces rq->lock contention/bounces. - */ - SCHED_FEAT(TTWU_QUEUE, true) -+#endif - - /* - * When doing wakeups, attempt to limit superfluous scans of the LLC domain. --- -2.30.2 - |