diff options
Diffstat (limited to 'debian/patches-rt/0236-sched-Add-support-for-lazy-preemption.patch')
| -rw-r--r-- | debian/patches-rt/0236-sched-Add-support-for-lazy-preemption.patch | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/debian/patches-rt/0236-sched-Add-support-for-lazy-preemption.patch b/debian/patches-rt/0236-sched-Add-support-for-lazy-preemption.patch index 0c7ff0691..8ab7c4c53 100644 --- a/debian/patches-rt/0236-sched-Add-support-for-lazy-preemption.patch +++ b/debian/patches-rt/0236-sched-Add-support-for-lazy-preemption.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 26 Oct 2012 18:50:54 +0100 -Subject: [PATCH 236/342] sched: Add support for lazy preemption -Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=f58baddb785517ba67a7470fb9278fcf919590ff +Subject: [PATCH 236/351] sched: Add support for lazy preemption +Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=48ddc8513cc012c5cf3c2da038c2544f6c3f591e It has become an obsession to mitigate the determinism vs. throughput loss of RT. Looking at the mainline semantics of preemption points @@ -143,10 +143,10 @@ index ed8413e7140f..9c74a019bf57 100644 } while (0) diff --git a/include/linux/sched.h b/include/linux/sched.h -index 7523c0786a63..044bebd3d16f 100644 +index 19eb4838cf03..00b307a4156c 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h -@@ -1733,6 +1733,44 @@ static inline int test_tsk_need_resched(struct task_struct *tsk) +@@ -1737,6 +1737,44 @@ static inline int test_tsk_need_resched(struct task_struct *tsk) return unlikely(test_tsk_thread_flag(tsk,TIF_NEED_RESCHED)); } @@ -262,7 +262,7 @@ index 6ae5b18bf3a5..396394ebbc5b 100644 __read_rt_unlock(cpuhp_pin); goto again; diff --git a/kernel/sched/core.c b/kernel/sched/core.c -index dba425296275..0995748a3a1d 100644 +index 7def8ae96342..cf60731667bf 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -493,6 +493,48 @@ void resched_curr(struct rq *rq) @@ -383,7 +383,7 @@ index dba425296275..0995748a3a1d 100644 do { /* * Because the function tracer can trace preempt_count_sub() -@@ -5505,7 +5579,9 @@ void init_idle(struct task_struct *idle, int cpu) +@@ -5506,7 +5580,9 @@ void init_idle(struct task_struct *idle, int cpu) /* Set the preempt count _outside_ the spinlocks! */ init_idle_preempt_count(idle, cpu); @@ -394,7 +394,7 @@ index dba425296275..0995748a3a1d 100644 /* * The idle tasks have their own, simple scheduling class: */ -@@ -7222,6 +7298,7 @@ void migrate_disable(void) +@@ -7223,6 +7299,7 @@ void migrate_disable(void) } preempt_disable(); @@ -402,7 +402,7 @@ index dba425296275..0995748a3a1d 100644 pin_current_cpu(); migrate_disable_update_cpus_allowed(p); -@@ -7289,6 +7366,7 @@ void migrate_enable(void) +@@ -7290,6 +7367,7 @@ void migrate_enable(void) arg.dest_cpu = dest_cpu; unpin_current_cpu(); @@ -410,7 +410,7 @@ index dba425296275..0995748a3a1d 100644 preempt_enable(); stop_one_cpu(task_cpu(p), migration_cpu_stop, &arg); tlb_migrate_finish(p->mm); -@@ -7297,6 +7375,7 @@ void migrate_enable(void) +@@ -7298,6 +7376,7 @@ void migrate_enable(void) } } unpin_current_cpu(); |