diff options
Diffstat (limited to 'sys/kern/kern_lockstat.c')
| -rw-r--r-- | sys/kern/kern_lockstat.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/sys/kern/kern_lockstat.c b/sys/kern/kern_lockstat.c index 1f35893..3a65fa9 100644 --- a/sys/kern/kern_lockstat.c +++ b/sys/kern/kern_lockstat.c @@ -36,9 +36,10 @@ #ifdef KDTRACE_HOOKS -#include <sys/time.h> #include <sys/types.h> +#include <sys/lock.h> #include <sys/lockstat.h> +#include <sys/time.h> /* * The following must match the type definition of dtrace_probe. It is @@ -47,14 +48,19 @@ uint32_t lockstat_probemap[LS_NPROBES]; void (*lockstat_probe_func)(uint32_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t); - +int lockstat_enabled = 0; uint64_t -lockstat_nsecs(void) +lockstat_nsecs(struct lock_object *lo) { struct bintime bt; uint64_t ns; + if (!lockstat_enabled) + return (0); + if ((lo->lo_flags & LO_NOPROFILE) != 0) + return (0); + binuptime(&bt); ns = bt.sec * (uint64_t)1000000000; ns += ((uint64_t)1000000000 * (uint32_t)(bt.frac >> 32)) >> 32; |
