diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:06:00 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:06:00 +0000 |
commit | b15a952c52a6825376d3e7f6c1bf5c886c6d8b74 (patch) | |
tree | 1500f2f8f276908a36d8126cb632c0d6b1276764 /debian/patches-rt/0202-mm-page_alloc-Use-migrate_disable-in-drain_local_pag.patch | |
parent | Adding upstream version 5.10.209. (diff) | |
download | linux-b15a952c52a6825376d3e7f6c1bf5c886c6d8b74.tar.xz linux-b15a952c52a6825376d3e7f6c1bf5c886c6d8b74.zip |
Adding debian version 5.10.209-2.debian/5.10.209-2debian
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'debian/patches-rt/0202-mm-page_alloc-Use-migrate_disable-in-drain_local_pag.patch')
-rw-r--r-- | debian/patches-rt/0202-mm-page_alloc-Use-migrate_disable-in-drain_local_pag.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/debian/patches-rt/0202-mm-page_alloc-Use-migrate_disable-in-drain_local_pag.patch b/debian/patches-rt/0202-mm-page_alloc-Use-migrate_disable-in-drain_local_pag.patch new file mode 100644 index 000000000..486873119 --- /dev/null +++ b/debian/patches-rt/0202-mm-page_alloc-Use-migrate_disable-in-drain_local_pag.patch @@ -0,0 +1,39 @@ +From 4c4d7886b6c8d16df841ac103b4742481ad5f014 Mon Sep 17 00:00:00 2001 +From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Date: Thu, 2 Jul 2020 14:27:23 +0200 +Subject: [PATCH 202/323] mm/page_alloc: Use migrate_disable() in + drain_local_pages_wq() +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz + +drain_local_pages_wq() disables preemption to avoid CPU migration during +CPU hotplug. +Using migrate_disable() makes the function preemptible on PREEMPT_RT but +still avoids CPU migrations during CPU-hotplug. On !PREEMPT_RT it +behaves like preempt_disable(). + +Use migrate_disable() in drain_local_pages_wq(). + +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + mm/page_alloc.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/mm/page_alloc.c b/mm/page_alloc.c +index a3f1e4c6bdc8..508650843235 100644 +--- a/mm/page_alloc.c ++++ b/mm/page_alloc.c +@@ -3048,9 +3048,9 @@ static void drain_local_pages_wq(struct work_struct *work) + * cpu which is allright but we also have to make sure to not move to + * a different one. + */ +- preempt_disable(); ++ migrate_disable(); + drain_local_pages(drain->zone); +- preempt_enable(); ++ migrate_enable(); + } + + /* +-- +2.43.0 + |