diff options
Diffstat (limited to 'usr/src/uts/common/os/cpu.c')
| -rw-r--r-- | usr/src/uts/common/os/cpu.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/usr/src/uts/common/os/cpu.c b/usr/src/uts/common/os/cpu.c index d99d9403cd..ef306f2979 100644 --- a/usr/src/uts/common/os/cpu.c +++ b/usr/src/uts/common/os/cpu.c @@ -161,6 +161,9 @@ static struct _cpu_pause_info { static kmutex_t pause_free_mutex; static kcondvar_t pause_free_cv; +void *(*cpu_pause_func)(void *) = NULL; + + static struct cpu_sys_stats_ks_data { kstat_named_t cpu_ticks_idle; kstat_named_t cpu_ticks_user; @@ -738,10 +741,12 @@ weakbinding_start(void) * which is a good trade off. */ static void -cpu_pause(volatile char *safe) +cpu_pause(int index) { int s; struct _cpu_pause_info *cpi = &cpu_pause_info; + volatile char *safe = &safe_list[index]; + long lindex = index; ASSERT((curthread->t_bound_cpu != NULL) || (*safe == PAUSE_DIE)); @@ -766,6 +771,16 @@ cpu_pause(volatile char *safe) * setbackdq/setfrontdq. */ s = splhigh(); + /* + * if cpu_pause_func() has been set then call it using + * index as the argument, currently only used by + * cpr_suspend_cpus(). This function is used as the + * code to execute on the "paused" cpu's when a machine + * comes out of a sleep state and CPU's were powered off. + * (could also be used for hotplugging CPU's). + */ + if (cpu_pause_func != NULL) + (*cpu_pause_func)((void *)lindex); mach_cpu_pause(safe); @@ -809,13 +824,13 @@ static void cpu_pause_alloc(cpu_t *cp) { kthread_id_t t; - int cpun = cp->cpu_id; + long cpun = cp->cpu_id; /* * Note, v.v_nglobpris will not change value as long as I hold * cpu_lock. */ - t = thread_create(NULL, 0, cpu_pause, (caddr_t)&safe_list[cpun], + t = thread_create(NULL, 0, cpu_pause, (void *)cpun, 0, &p0, TS_STOPPED, v.v_nglobpris - 1); thread_lock(t); t->t_bound_cpu = cp; |