diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-12-07 08:04:08 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-12-07 08:04:08 -0800 |
| commit | c2048b0a0a6e589d9813766489f78185cbabcdc6 (patch) | |
| tree | e3245fb17e97329925d0aa0a350f604d6d3f1f71 /arch | |
| parent | de47de7404e29df8de82f5822b4fde1a6ed97b54 (diff) | |
| parent | 8d7bfb4a891d606d52e1a99cf7231b4417b935dc (diff) | |
Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] css: fix rsid evaluation for 2nd crw
[S390] nohz/s390: fix arch_needs_cpu() return value on offline cpus
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kernel/vtime.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c index 56c8687b29b3..7eff9b7347c0 100644 --- a/arch/s390/kernel/vtime.c +++ b/arch/s390/kernel/vtime.c @@ -19,6 +19,7 @@ #include <linux/kernel_stat.h> #include <linux/rcupdate.h> #include <linux/posix-timers.h> +#include <linux/cpu.h> #include <asm/s390_ext.h> #include <asm/timer.h> @@ -566,6 +567,23 @@ void init_cpu_vtimer(void) __ctl_set_bit(0,10); } +static int __cpuinit s390_nohz_notify(struct notifier_block *self, + unsigned long action, void *hcpu) +{ + struct s390_idle_data *idle; + long cpu = (long) hcpu; + + idle = &per_cpu(s390_idle, cpu); + switch (action) { + case CPU_DYING: + case CPU_DYING_FROZEN: + idle->nohz_delay = 0; + default: + break; + } + return NOTIFY_OK; +} + void __init vtime_init(void) { /* request the cpu timer external interrupt */ @@ -574,5 +592,6 @@ void __init vtime_init(void) /* Enable cpu timer interrupts on the boot cpu. */ init_cpu_vtimer(); + cpu_notifier(s390_nohz_notify, 0); } |