diff options
Diffstat (limited to 'spinlock.c')
-rw-r--r-- | spinlock.c | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -1,6 +1,7 @@ #include "types.h" #include "defs.h" #include "x86.h" +#include "mmu.h" #define LOCK_FREE -1 @@ -15,7 +16,7 @@ acquire_spinlock(uint32_t* lock) if (*lock == cpu_id) return; - lapic_disableintr(); + write_eflags(read_eflags() & ~FL_IF); while ( cmpxchg(LOCK_FREE, cpu_id, lock) != cpu_id ) { ; } // cprintf ("acquired: %d\n", cpu_id); } @@ -28,7 +29,7 @@ release_spinlock(uint32_t* lock) if (*lock != cpu_id) panic("release_spinlock: releasing a lock that i don't own\n"); *lock = LOCK_FREE; - lapic_enableintr(); + write_eflags(read_eflags() | FL_IF); } void |