diff options
Diffstat (limited to 'sys/kern/kern_sx.c')
| -rw-r--r-- | sys/kern/kern_sx.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/sys/kern/kern_sx.c b/sys/kern/kern_sx.c index 8154b20c494e..6bd276077309 100644 --- a/sys/kern/kern_sx.c +++ b/sys/kern/kern_sx.c @@ -50,6 +50,7 @@ __FBSDID("$FreeBSD$"); #include <sys/lock.h> #include <sys/mutex.h> #include <sys/proc.h> +#include <sys/sched.h> #include <sys/sleepqueue.h> #include <sys/sx.h> #include <sys/sysctl.h> @@ -555,6 +556,10 @@ _sx_xlock_hard(struct sx *sx, uintptr_t tid, int opts, const char *file, CTR3(KTR_LOCK, "%s: spinning on %p held by %p", __func__, sx, owner); + KTR_STATE1(KTR_SCHED, "thread", + sched_tdname(curthread), "spinning", + "lockname:\"%s\"", + sx->lock_object.lo_name); GIANT_SAVE(); while (SX_OWNER(sx->sx_lock) == x && TD_IS_RUNNING(owner)) { @@ -563,9 +568,14 @@ _sx_xlock_hard(struct sx *sx, uintptr_t tid, int opts, const char *file, spin_cnt++; #endif } + KTR_STATE0(KTR_SCHED, "thread", + sched_tdname(curthread), "running"); continue; } } else if (SX_SHARERS(x) && spintries < asx_retries) { + KTR_STATE1(KTR_SCHED, "thread", + sched_tdname(curthread), "spinning", + "lockname:\"%s\"", sx->lock_object.lo_name); GIANT_SAVE(); spintries++; for (i = 0; i < asx_loops; i++) { @@ -582,6 +592,8 @@ _sx_xlock_hard(struct sx *sx, uintptr_t tid, int opts, const char *file, spin_cnt++; #endif } + KTR_STATE0(KTR_SCHED, "thread", + sched_tdname(curthread), "running"); if (i != asx_loops) continue; } @@ -844,6 +856,9 @@ _sx_slock_hard(struct sx *sx, int opts, const char *file, int line) CTR3(KTR_LOCK, "%s: spinning on %p held by %p", __func__, sx, owner); + KTR_STATE1(KTR_SCHED, "thread", + sched_tdname(curthread), "spinning", + "lockname:\"%s\"", sx->lock_object.lo_name); GIANT_SAVE(); while (SX_OWNER(sx->sx_lock) == x && TD_IS_RUNNING(owner)) { @@ -852,6 +867,8 @@ _sx_slock_hard(struct sx *sx, int opts, const char *file, int line) #endif cpu_spinwait(); } + KTR_STATE0(KTR_SCHED, "thread", + sched_tdname(curthread), "running"); continue; } } |