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| author | Paul Mundt <lethal@linux-sh.org> | 2010-12-22 12:56:10 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-12-22 12:56:10 +0900 |
| commit | 7ccbefe07ea0a3570e44d1ec13a307552ee4dadd (patch) | |
| tree | ba0299694a9f3940f289b6a29cadab853906e3d2 /arch/s390/kernel/vtime.c | |
| parent | 623eb15647fc35c5a8cd38985d5958240eb072c1 (diff) | |
| parent | 90a8a73c06cc32b609a880d48449d7083327e11a (diff) | |
| download | talos-op-linux-7ccbefe07ea0a3570e44d1ec13a307552ee4dadd.tar.gz talos-op-linux-7ccbefe07ea0a3570e44d1ec13a307552ee4dadd.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/s390/kernel/vtime.c')
| -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); } |
