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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2006-02-17 22:52:46 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-17 22:59:26 +0100 |
| commit | 1fca251f36fac3fae7d9cf10de69c2c93f6c0000 (patch) | |
| tree | 0fd4e7816dc310a48e95901ae411e5442805e224 /arch/s390 | |
| parent | [PATCH] s390: ccw device disbanding (diff) | |
| download | linux-1fca251f36fac3fae7d9cf10de69c2c93f6c0000.tar.xz linux-1fca251f36fac3fae7d9cf10de69c2c93f6c0000.zip | |
[PATCH] s390: fix preempt_count of idle thread with cpu hotplug
Set preempt_count of idle_thread to zero before switching off cpu. Otherwise
the preempt_count will be wrong if the cpu is switched on again since the
thread will be reused.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/process.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 008c74526fd3..da6fbae8df91 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -128,8 +128,10 @@ void default_idle(void) __ctl_set_bit(8, 15); #ifdef CONFIG_HOTPLUG_CPU - if (cpu_is_offline(cpu)) + if (cpu_is_offline(cpu)) { + preempt_enable_no_resched(); cpu_die(); + } #endif local_mcck_disable(); |