diff options
| -rw-r--r-- | arch/s390/kernel/vtime.c | 19 | ||||
| -rw-r--r-- | drivers/s390/cio/css.c | 2 |
2 files changed, 20 insertions, 1 deletions
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c index 56c8687..7eff9b7 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); } diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index a5050e2..825951b 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -635,7 +635,7 @@ static void css_process_crw(struct crw *crw0, struct crw *crw1, int overflow) init_subchannel_id(&mchk_schid); mchk_schid.sch_no = crw0->rsid; if (crw1) - mchk_schid.ssid = (crw1->rsid >> 8) & 3; + mchk_schid.ssid = (crw1->rsid >> 4) & 3; /* * Since we are always presented with IPI in the CRW, we have to |