diff options
Diffstat (limited to 'debian/patches-rt/0316-sched-migrate_enable-Remove-__schedule-call.patch')
| -rw-r--r-- | debian/patches-rt/0316-sched-migrate_enable-Remove-__schedule-call.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/debian/patches-rt/0316-sched-migrate_enable-Remove-__schedule-call.patch b/debian/patches-rt/0316-sched-migrate_enable-Remove-__schedule-call.patch new file mode 100644 index 000000000..a47b24169 --- /dev/null +++ b/debian/patches-rt/0316-sched-migrate_enable-Remove-__schedule-call.patch @@ -0,0 +1,37 @@ +From: Scott Wood <swood@redhat.com> +Date: Fri, 24 Jan 2020 06:11:47 -0500 +Subject: [PATCH 316/342] sched: migrate_enable: Remove __schedule() call +Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=f416311d786e940c55fab1dfcdbdd03188b6855f + +[ Upstream commit b8162e61e9a33bd1de6452eb838fbf50a93ddd9a ] + +We can rely on preempt_enable() to schedule. Besides simplifying the +code, this potentially allows sequences such as the following to be +permitted: + +migrate_disable(); +preempt_disable(); +migrate_enable(); +preempt_enable(); + +Suggested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Signed-off-by: Scott Wood <swood@redhat.com> +Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> +--- + kernel/sched/core.c | 1 - + 1 file changed, 1 deletion(-) + +diff --git a/kernel/sched/core.c b/kernel/sched/core.c +index 8b946353b1d7..410882ff2007 100644 +--- a/kernel/sched/core.c ++++ b/kernel/sched/core.c +@@ -7345,7 +7345,6 @@ void migrate_enable(void) + stop_one_cpu_nowait(task_cpu(p), migration_cpu_stop, + arg, work); + tlb_migrate_finish(p->mm); +- __schedule(true); + } + + out: |