3.2.82-rt119-rc1 stable review patch.
If anyone has any objections, please let me know.
------------------
From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
It has been pointed out by tglx that on UP the non-RT task could spin
its entire time slice because the lock owner is preempted. This won't
happen on !RT. So we back to "chill" if we can't cond_resched() did not
work.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
fs/dcache.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/fs/dcache.c b/fs/dcache.c
index bd9bd649c390..bea5589bc957 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -38,8 +38,6 @@
#include <linux/prefetch.h>
#include <linux/ratelimit.h>
#include <linux/delay.h>
-#include <linux/sched/rt.h>
-#include <linux/sched/deadline.h>
#include "internal.h"
/*
@@ -513,10 +511,11 @@ kill_it:
if (parent == dentry) {
/* the task with the highest priority won't schedule */
r = cond_resched();
- if (!r && (rt_task(current) || dl_task(current)))
+ if (!r)
cpu_chill();
- } else
+ } else {
dentry = parent;
+ }
goto repeat;
}
}
--
2.8.1
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