diff options
Diffstat (limited to 'sys/x86')
| -rw-r--r-- | sys/x86/x86/intr_machdep.c | 41 |
1 files changed, 22 insertions, 19 deletions
diff --git a/sys/x86/x86/intr_machdep.c b/sys/x86/x86/intr_machdep.c index 9a5e463..980da87 100644 --- a/sys/x86/x86/intr_machdep.c +++ b/sys/x86/x86/intr_machdep.c @@ -46,6 +46,7 @@ #include <sys/mutex.h> #include <sys/proc.h> #include <sys/smp.h> +#include <sys/sx.h> #include <sys/syslog.h> #include <sys/systm.h> #include <machine/clock.h> @@ -73,7 +74,8 @@ typedef void (*mask_fn)(void *); static int intrcnt_index; static struct intsrc *interrupt_sources[NUM_IO_INTS]; -static struct mtx intr_table_lock; +static struct sx intrsrc_lock; +static struct mtx intrpic_lock; static struct mtx intrcnt_lock; static TAILQ_HEAD(pics_head, pic) pics; @@ -117,14 +119,14 @@ intr_register_pic(struct pic *pic) { int error; - mtx_lock(&intr_table_lock); + mtx_lock(&intrpic_lock); if (intr_pic_registered(pic)) error = EBUSY; else { TAILQ_INSERT_TAIL(&pics, pic, pics); error = 0; } - mtx_unlock(&intr_table_lock); + mtx_unlock(&intrpic_lock); return (error); } @@ -148,16 +150,16 @@ intr_register_source(struct intsrc *isrc) vector); if (error) return (error); - mtx_lock(&intr_table_lock); + sx_xlock(&intrsrc_lock); if (interrupt_sources[vector] != NULL) { - mtx_unlock(&intr_table_lock); + sx_xunlock(&intrsrc_lock); intr_event_destroy(isrc->is_event); return (EEXIST); } intrcnt_register(isrc); interrupt_sources[vector] = isrc; isrc->is_handlers = 0; - mtx_unlock(&intr_table_lock); + sx_xunlock(&intrsrc_lock); return (0); } @@ -181,14 +183,14 @@ intr_add_handler(const char *name, int vector, driver_filter_t filter, error = intr_event_add_handler(isrc->is_event, name, filter, handler, arg, intr_priority(flags), flags, cookiep); if (error == 0) { - mtx_lock(&intr_table_lock); + sx_xlock(&intrsrc_lock); intrcnt_updatename(isrc); isrc->is_handlers++; if (isrc->is_handlers == 1) { isrc->is_pic->pic_enable_intr(isrc); isrc->is_pic->pic_enable_source(isrc); } - mtx_unlock(&intr_table_lock); + sx_xunlock(&intrsrc_lock); } return (error); } @@ -202,14 +204,14 @@ intr_remove_handler(void *cookie) isrc = intr_handler_source(cookie); error = intr_event_remove_handler(cookie); if (error == 0) { - mtx_lock(&intr_table_lock); + sx_xlock(&intrsrc_lock); isrc->is_handlers--; if (isrc->is_handlers == 0) { isrc->is_pic->pic_disable_source(isrc, PIC_NO_EOI); isrc->is_pic->pic_disable_intr(isrc); } intrcnt_updatename(isrc); - mtx_unlock(&intr_table_lock); + sx_xunlock(&intrsrc_lock); } return (error); } @@ -283,12 +285,12 @@ intr_resume(bool suspend_cancelled) #ifndef DEV_ATPIC atpic_reset(); #endif - mtx_lock(&intr_table_lock); + mtx_lock(&intrpic_lock); TAILQ_FOREACH(pic, &pics, pics) { if (pic->pic_resume != NULL) pic->pic_resume(pic, suspend_cancelled); } - mtx_unlock(&intr_table_lock); + mtx_unlock(&intrpic_lock); } void @@ -296,12 +298,12 @@ intr_suspend(void) { struct pic *pic; - mtx_lock(&intr_table_lock); + mtx_lock(&intrpic_lock); TAILQ_FOREACH_REVERSE(pic, &pics, pics_head, pics) { if (pic->pic_suspend != NULL) pic->pic_suspend(pic); } - mtx_unlock(&intr_table_lock); + mtx_unlock(&intrpic_lock); } static int @@ -317,9 +319,9 @@ intr_assign_cpu(void *arg, u_char cpu) */ if (assign_cpu && cpu != NOCPU) { isrc = arg; - mtx_lock(&intr_table_lock); + sx_xlock(&intrsrc_lock); error = isrc->is_pic->pic_assign_cpu(isrc, cpu_apic_ids[cpu]); - mtx_unlock(&intr_table_lock); + sx_xunlock(&intrsrc_lock); } else error = 0; return (error); @@ -379,7 +381,8 @@ intr_init(void *dummy __unused) intrcnt_setname("???", 0); intrcnt_index = 1; TAILQ_INIT(&pics); - mtx_init(&intr_table_lock, "intr sources", NULL, MTX_DEF); + mtx_init(&intrpic_lock, "intrpic", NULL, MTX_DEF); + sx_init(&intrsrc_lock, "intrsrc"); mtx_init(&intrcnt_lock, "intrcnt", NULL, MTX_SPIN); } SYSINIT(intr_init, SI_SUB_INTR, SI_ORDER_FIRST, intr_init, NULL); @@ -527,7 +530,7 @@ intr_shuffle_irqs(void *arg __unused) return; /* Round-robin assign a CPU to each enabled source. */ - mtx_lock(&intr_table_lock); + sx_xlock(&intrsrc_lock); assign_cpu = 1; for (i = 0; i < NUM_IO_INTS; i++) { isrc = interrupt_sources[i]; @@ -548,7 +551,7 @@ intr_shuffle_irqs(void *arg __unused) } } - mtx_unlock(&intr_table_lock); + sx_xunlock(&intrsrc_lock); } SYSINIT(intr_shuffle_irqs, SI_SUB_SMP, SI_ORDER_SECOND, intr_shuffle_irqs, NULL); |
