[PATCH v4 12/20] RT: Allow current_cpu to be included in search
- From: Steven Rostedt <rostedt@xxxxxxxxxxx>
- Date: Tue, 20 Nov 2007 20:01:06 -0500
From: Gregory Haskins <ghaskins@xxxxxxxxxx>
It doesn't hurt if we allow the current CPU to be included in the
search. We will just simply skip it later if the current CPU turns out
to be the lowest.
We will use this later in the series
Signed-off-by: Gregory Haskins <ghaskins@xxxxxxxxxx>
Signed-off-by: Steven Rostedt <srostedt@xxxxxxxxxx>
---
kernel/sched_rt.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
Index: linux-compile.git/kernel/sched_rt.c
===================================================================
--- linux-compile.git.orig/kernel/sched_rt.c 2007-11-20 19:53:05.000000000 -0500
+++ linux-compile.git/kernel/sched_rt.c 2007-11-20 19:53:07.000000000 -0500
@@ -274,9 +274,6 @@ static int find_lowest_rq(struct task_st
for_each_cpu_mask(cpu, *cpu_mask) {
struct rq *rq = cpu_rq(cpu);
- if (cpu == rq->cpu)
- continue;
-
/* We look for lowest RT prio or non-rt CPU */
if (rq->rt.highest_prio >= MAX_RT_PRIO) {
lowest_rq = rq;
@@ -304,7 +301,7 @@ static struct rq *find_lock_lowest_rq(st
for (tries = 0; tries < RT_MAX_TRIES; tries++) {
cpu = find_lowest_rq(task);
- if (cpu == -1)
+ if ((cpu == -1) || (cpu == rq->cpu))
break;
lowest_rq = cpu_rq(cpu);
--
-
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- References:
- [PATCH v4 00/20] New RT Balancing version 4
- From: Steven Rostedt
- [PATCH v4 00/20] New RT Balancing version 4
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