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author | Dmitry Torokhov <dtor@insightbb.com> | 2006-12-08 09:07:56 +0300 |
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committer | Dmitry Torokhov <dtor@insightbb.com> | 2006-12-08 09:07:56 +0300 |
commit | bef986502fa398b1785a3979b1aa17cd902d3527 (patch) | |
tree | b59c1afe7b1dfcc001b86e54863f550d7ddc8c34 /drivers/s390/char/sclp_quiesce.c | |
parent | 4bdbd2807deeccc0793d57fb5120d7a53f2c0b3c (diff) | |
parent | c99767974ebd2a719d849fdeaaa1674456f5283f (diff) | |
download | linux-bef986502fa398b1785a3979b1aa17cd902d3527.tar.xz |
Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
drivers/usb/input/hid.h
Diffstat (limited to 'drivers/s390/char/sclp_quiesce.c')
-rw-r--r-- | drivers/s390/char/sclp_quiesce.c | 37 |
1 files changed, 1 insertions, 36 deletions
diff --git a/drivers/s390/char/sclp_quiesce.c b/drivers/s390/char/sclp_quiesce.c index 32004aae95c1..ffa9282ce97a 100644 --- a/drivers/s390/char/sclp_quiesce.c +++ b/drivers/s390/char/sclp_quiesce.c @@ -19,52 +19,17 @@ #include "sclp.h" - -#ifdef CONFIG_SMP -/* Signal completion of shutdown process. All CPUs except the first to enter - * this function: go to stopped state. First CPU: wait until all other - * CPUs are in stopped or check stop state. Afterwards, load special PSW - * to indicate completion. */ -static void -do_load_quiesce_psw(void * __unused) -{ - static atomic_t cpuid = ATOMIC_INIT(-1); - psw_t quiesce_psw; - int cpu; - - if (atomic_cmpxchg(&cpuid, -1, smp_processor_id()) != -1) - signal_processor(smp_processor_id(), sigp_stop); - /* Wait for all other cpus to enter stopped state */ - for_each_online_cpu(cpu) { - if (cpu == smp_processor_id()) - continue; - while(!smp_cpu_not_running(cpu)) - cpu_relax(); - } - /* Quiesce the last cpu with the special psw */ - quiesce_psw.mask = PSW_BASE_BITS | PSW_MASK_WAIT; - quiesce_psw.addr = 0xfff; - __load_psw(quiesce_psw); -} - -/* Shutdown handler. Perform shutdown function on all CPUs. */ -static void -do_machine_quiesce(void) -{ - on_each_cpu(do_load_quiesce_psw, NULL, 0, 0); -} -#else /* Shutdown handler. Signal completion of shutdown by loading special PSW. */ static void do_machine_quiesce(void) { psw_t quiesce_psw; + smp_send_stop(); quiesce_psw.mask = PSW_BASE_BITS | PSW_MASK_WAIT; quiesce_psw.addr = 0xfff; __load_psw(quiesce_psw); } -#endif /* Handler for quiesce event. Start shutdown procedure. */ static void |