diff options
Diffstat (limited to 'usr/src/uts/common/os/msacct.c')
| -rw-r--r-- | usr/src/uts/common/os/msacct.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/usr/src/uts/common/os/msacct.c b/usr/src/uts/common/os/msacct.c index 134de5a513..57c56cef8f 100644 --- a/usr/src/uts/common/os/msacct.c +++ b/usr/src/uts/common/os/msacct.c @@ -236,6 +236,47 @@ new_cpu_mstate(int cmstate, hrtime_t curtime) } /* + * Return an aggregation of user and system CPU time consumed by + * the specified thread in scaled nanoseconds. + */ +hrtime_t +mstate_thread_onproc_time(kthread_t *t) +{ + hrtime_t aggr_time; + hrtime_t now; + hrtime_t state_start; + struct mstate *ms; + klwp_t *lwp; + int mstate; + + ASSERT(THREAD_LOCK_HELD(t)); + + if ((lwp = ttolwp(t)) == NULL) + return (0); + + mstate = t->t_mstate; + ms = &lwp->lwp_mstate; + state_start = ms->ms_state_start; + + aggr_time = ms->ms_acct[LMS_USER] + + ms->ms_acct[LMS_SYSTEM] + ms->ms_acct[LMS_TRAP]; + + now = gethrtime_unscaled(); + + /* + * NOTE: gethrtime_unscaled on X86 taken on different CPUs is + * inconsistent, so it is possible that now < state_start. + */ + if ((mstate == LMS_USER || mstate == LMS_SYSTEM || + mstate == LMS_TRAP) && (now > state_start)) { + aggr_time += now - state_start; + } + + scalehrtime(&aggr_time); + return (aggr_time); +} + +/* * Return an aggregation of microstate times in scaled nanoseconds (high-res * time). This keeps in mind that p_acct is already scaled, and ms_acct is * not. |