diff options
Diffstat (limited to 'sys/kern/subr_smp.c')
| -rw-r--r-- | sys/kern/subr_smp.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/sys/kern/subr_smp.c b/sys/kern/subr_smp.c index ce107d9..e5fb310 100644 --- a/sys/kern/subr_smp.c +++ b/sys/kern/subr_smp.c @@ -22,7 +22,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: mp_machdep.c,v 1.40 1997/08/09 23:01:03 fsmp Exp $ + * $Id: mp_machdep.c,v 1.41 1997/08/10 19:32:38 fsmp Exp $ */ #include "opt_smp.h" @@ -1418,6 +1418,10 @@ default_mp_table(int type) /* * initialize all the SMP locks */ + +/* lock the com (tty) data structures */ +struct simplelock com_lock; + static void init_locks(void) { @@ -1427,8 +1431,23 @@ init_locks(void) */ mp_lock = 0x00000001; + /* ISR uses its own "giant lock" */ + isr_lock = 0x00000000; + + /* serializes FAST_INTR() accesses */ + s_lock_init((struct simplelock*)&fast_intr_lock); + + /* serializes INTR() accesses */ + s_lock_init((struct simplelock*)&intr_lock); + /* locks the IO APIC and apic_imen accesses */ s_lock_init((struct simplelock*)&imen_lock); + + /* locks cpl accesses */ + s_lock_init((struct simplelock*)&cpl_lock); + + /* locks com (tty) data/hardware accesses: a FASTINTR() */ + s_lock_init((struct simplelock*)&com_lock); } |
