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Fixed some comments in statclock(). The previous commit made it clearer

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that one comment was attached to null code.
This commit is contained in:
bde 1999-11-27 14:37:34 +00:00
parent a3e4a9264f
commit 61f11af11f
2 changed files with 16 additions and 16 deletions
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16
sys/kern/kern_clock.c
View File

@ -361,7 +361,9 @@ stopprofclock(p)
/* /*
* Statistics clock. Grab profile sample, and if divider reaches 0, * Statistics clock. Grab profile sample, and if divider reaches 0,
* do process and kernel statistics. * do process and kernel statistics. Most of the statistics are only
* used by user-level statistics programs. The main exceptions are
* p->p_uticks, p->p_sticks, p->p_iticks, and p->p_estcpu.
*/ */
void void
statclock(frame) statclock(frame)
@ -378,6 +380,10 @@ statclock(frame)
struct vmspace *vm; struct vmspace *vm;
if (curproc != NULL && CLKF_USERMODE(frame)) { if (curproc != NULL && CLKF_USERMODE(frame)) {
/*
* Came from user mode; CPU was in user state.
* If this process is being profiled, record the tick.
*/
p = curproc; p = curproc;
if (p->p_flag & P_PROFIL) if (p->p_flag & P_PROFIL)
addupc_intr(p, CLKF_PC(frame), 1); addupc_intr(p, CLKF_PC(frame), 1);
@ -388,8 +394,7 @@ statclock(frame)
if (--pscnt > 0) if (--pscnt > 0)
return; return;
/* /*
* Came from user mode; CPU was in user state. * Charge the time as appropriate.
* If this process is being profiled record the tick.
*/ */
p->p_uticks++; p->p_uticks++;
if (p->p_nice > NZERO) if (p->p_nice > NZERO)
@ -441,11 +446,6 @@ statclock(frame)
} }
pscnt = psdiv; pscnt = psdiv;
/*
* We maintain statistics shown by user-level statistics
* programs: the amount of time in each cpu state.
*/
if (p != NULL) { if (p != NULL) {
schedclock(p); schedclock(p);

16
sys/kern/kern_tc.c
View File

@ -361,7 +361,9 @@ stopprofclock(p)
/* /*
* Statistics clock. Grab profile sample, and if divider reaches 0, * Statistics clock. Grab profile sample, and if divider reaches 0,
* do process and kernel statistics. * do process and kernel statistics. Most of the statistics are only
* used by user-level statistics programs. The main exceptions are
* p->p_uticks, p->p_sticks, p->p_iticks, and p->p_estcpu.
*/ */
void void
statclock(frame) statclock(frame)
@ -378,6 +380,10 @@ statclock(frame)
struct vmspace *vm; struct vmspace *vm;
if (curproc != NULL && CLKF_USERMODE(frame)) { if (curproc != NULL && CLKF_USERMODE(frame)) {
/*
* Came from user mode; CPU was in user state.
* If this process is being profiled, record the tick.
*/
p = curproc; p = curproc;
if (p->p_flag & P_PROFIL) if (p->p_flag & P_PROFIL)
addupc_intr(p, CLKF_PC(frame), 1); addupc_intr(p, CLKF_PC(frame), 1);
@ -388,8 +394,7 @@ statclock(frame)
if (--pscnt > 0) if (--pscnt > 0)
return; return;
/* /*
* Came from user mode; CPU was in user state. * Charge the time as appropriate.
* If this process is being profiled record the tick.
*/ */
p->p_uticks++; p->p_uticks++;
if (p->p_nice > NZERO) if (p->p_nice > NZERO)
@ -441,11 +446,6 @@ statclock(frame)
} }
pscnt = psdiv; pscnt = psdiv;
/*
* We maintain statistics shown by user-level statistics
* programs: the amount of time in each cpu state.
*/
if (p != NULL) { if (p != NULL) {
schedclock(p); schedclock(p);