The patch titled
sched: align rq to cacheline boundary
has been added to the -mm tree. Its filename is
sched-align-rq-to-cacheline-boundary.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: sched: align rq to cacheline boundary
From: "Siddha, Suresh B" <suresh.b.siddha@xxxxxxxxx>
Align the per cpu runqueue to the cacheline boundary. This will minimize
the number of cachelines touched during remote wakeup.
Signed-off-by: Suresh Siddha <suresh.b.siddha@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Ravikiran G Thirumalai <kiran@xxxxxxxxxxxx>
Cc: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sched.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN kernel/sched.c~sched-align-rq-to-cacheline-boundary kernel/sched.c
--- a/kernel/sched.c~sched-align-rq-to-cacheline-boundary
+++ a/kernel/sched.c
@@ -304,7 +304,7 @@ struct rq {
struct lock_class_key rq_lock_key;
};
-static DEFINE_PER_CPU(struct rq, runqueues);
+static DEFINE_PER_CPU(struct rq, runqueues) ____cacheline_aligned_in_smp;
static DEFINE_MUTEX(sched_hotcpu_mutex);
static inline int cpu_of(struct rq *rq)
_
Patches currently in -mm which might be from suresh.b.siddha@xxxxxxxxx are
x86_64-set-node_possible_map-at-runtime.patch
slab-x86_64-skip-cache_free_alien-on-non-numa.patch
sched-fix-idle-load-balancing-in-softirqd-context.patch
sched-fix-idle-load-balancing-in-softirqd-context-fix.patch
sched-dynticks-idle-load-balancing-v3.patch
sched-optimize-siblings-status-check-logic-in-wake_idle.patch
sched-align-rq-to-cacheline-boundary.patch
sched-dont-renice-kernel-threads.patch
sched-remove-sleepavg-from-proc.patch
sched-implement-staircase-deadline-cpu-scheduler.patch
sched-implement-staircase-deadline-cpu-scheduler-misc-fixes.patch
sched-remove-noninteractive-flag.patch
sched-document-sd-cpu-scheduler.patch
-
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