diff options
Diffstat (limited to 'drivers/s390/char')
| -rw-r--r-- | drivers/s390/char/sclp.c | 6 | ||||
| -rw-r--r-- | drivers/s390/char/sclp_cmd.c | 5 | ||||
| -rw-r--r-- | drivers/s390/char/sclp_config.c | 13 |
3 files changed, 10 insertions, 14 deletions
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c index 3c8b25e6c345..1fd8f2193ed8 100644 --- a/drivers/s390/char/sclp.c +++ b/drivers/s390/char/sclp.c @@ -399,6 +399,7 @@ sclp_tod_from_jiffies(unsigned long jiffies) void sclp_sync_wait(void) { + unsigned long long old_tick; unsigned long flags; unsigned long cr0, cr0_sync; u64 timeout; @@ -419,11 +420,12 @@ sclp_sync_wait(void) if (!irq_context) local_bh_disable(); /* Enable service-signal interruption, disable timer interrupts */ + old_tick = local_tick_disable(); trace_hardirqs_on(); __ctl_store(cr0, 0, 0); cr0_sync = cr0; + cr0_sync &= 0xffff00a0; cr0_sync |= 0x00000200; - cr0_sync &= 0xFFFFF3AC; __ctl_load(cr0_sync, 0, 0); __raw_local_irq_stosm(0x01); /* Loop until driver state indicates finished request */ @@ -439,9 +441,9 @@ sclp_sync_wait(void) __ctl_load(cr0, 0, 0); if (!irq_context) _local_bh_enable(); + local_tick_enable(old_tick); local_irq_restore(flags); } - EXPORT_SYMBOL(sclp_sync_wait); /* Dispatch changes in send and receive mask to registered listeners. */ diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c index 0c2b77493db4..eb5f1b8bc57f 100644 --- a/drivers/s390/char/sclp_cmd.c +++ b/drivers/s390/char/sclp_cmd.c @@ -427,6 +427,8 @@ static int sclp_mem_notifier(struct notifier_block *nb, sclp_attach_storage(id); switch (action) { case MEM_ONLINE: + case MEM_GOING_OFFLINE: + case MEM_CANCEL_OFFLINE: break; case MEM_GOING_ONLINE: rc = sclp_mem_change_state(start, size, 1); @@ -434,6 +436,9 @@ static int sclp_mem_notifier(struct notifier_block *nb, case MEM_CANCEL_ONLINE: sclp_mem_change_state(start, size, 0); break; + case MEM_OFFLINE: + sclp_mem_change_state(start, size, 0); + break; default: rc = -EINVAL; break; diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c index fff4ff485d9b..4cebd6ee6d27 100644 --- a/drivers/s390/char/sclp_config.c +++ b/drivers/s390/char/sclp_config.c @@ -8,7 +8,6 @@ #include <linux/init.h> #include <linux/errno.h> #include <linux/cpu.h> -#include <linux/kthread.h> #include <linux/sysdev.h> #include <linux/workqueue.h> #include <asm/smp.h> @@ -41,19 +40,9 @@ static void sclp_cpu_capability_notify(struct work_struct *work) put_online_cpus(); } -static int sclp_cpu_kthread(void *data) -{ - smp_rescan_cpus(); - return 0; -} - static void __ref sclp_cpu_change_notify(struct work_struct *work) { - /* Can't call smp_rescan_cpus() from workqueue context since it may - * deadlock in case of cpu hotplug. So we have to create a kernel - * thread in order to call it. - */ - kthread_run(sclp_cpu_kthread, NULL, "cpu_rescan"); + smp_rescan_cpus(); } static void sclp_conf_receiver_fn(struct evbuf_header *evbuf) |
