diff options
Diffstat (limited to 'sys/kern/kern_ktrace.c')
| -rw-r--r-- | sys/kern/kern_ktrace.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/kern/kern_ktrace.c b/sys/kern/kern_ktrace.c index a37ad22..9b97944 100644 --- a/sys/kern/kern_ktrace.c +++ b/sys/kern/kern_ktrace.c @@ -78,6 +78,9 @@ ktrgetheader(type) return (kth); } +/* + * MPSAFE + */ void ktrsyscall(vp, code, narg, args) struct vnode *vp; @@ -92,6 +95,7 @@ ktrsyscall(vp, code, narg, args) register_t *argp; int i; + mtx_lock(&Giant); p->p_traceflag |= KTRFAC_ACTIVE; kth = ktrgetheader(KTR_SYSCALL); MALLOC(ktp, struct ktr_syscall *, len, M_KTRACE, M_WAITOK); @@ -106,8 +110,12 @@ ktrsyscall(vp, code, narg, args) FREE(ktp, M_KTRACE); FREE(kth, M_KTRACE); p->p_traceflag &= ~KTRFAC_ACTIVE; + mtx_unlock(&Giant); } +/* + * MPSAFE + */ void ktrsysret(vp, code, error, retval) struct vnode *vp; @@ -118,6 +126,7 @@ ktrsysret(vp, code, error, retval) struct ktr_sysret ktp; struct proc *p = curproc; /* XXX */ + mtx_lock(&Giant); p->p_traceflag |= KTRFAC_ACTIVE; kth = ktrgetheader(KTR_SYSRET); ktp.ktr_code = code; @@ -130,6 +139,7 @@ ktrsysret(vp, code, error, retval) ktrwrite(vp, kth, NULL); FREE(kth, M_KTRACE); p->p_traceflag &= ~KTRFAC_ACTIVE; + mtx_unlock(&Giant); } void |
