lkml.org 
[lkml]   [2003]   [Aug]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH]O18.1int
Date
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Some high credit tasks were being missed due to their prolonged cpu burn at
startup flagging them as low credit tasks.

Low credit tasks can now recover to become high credit.

Con
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.2 (GNU/Linux)

iD8DBQE/RwHDZUg7+tp6mRURAie7AJ43egdTeSapoX1D0aJQcEksBTkKdwCfcyHZ
cD1TMt7oFNXvmSrqnJe7Z+E=
=41zp
-----END PGP SIGNATURE-----
--- linux-2.6.0-test3-mm3-O18/kernel/sched.c 2003-08-23 15:28:47.000000000 +1000
+++ linux-2.6.0-test3-mm3/kernel/sched.c 2003-08-23 15:30:16.000000000 +1000
@@ -140,9 +140,6 @@
#define LOW_CREDIT(p) \
((p)->interactive_credit < -MAX_SLEEP_AVG)

-#define VARYING_CREDIT(p) \
- (!(HIGH_CREDIT(p) || LOW_CREDIT(p)))
-
#define TASK_PREEMPTS_CURR(p, rq) \
((p)->prio < (rq)->curr->prio)

@@ -434,7 +431,7 @@ static void recalc_task_prio(task_t *p,

if (p->sleep_avg > NS_MAX_SLEEP_AVG){
p->sleep_avg = NS_MAX_SLEEP_AVG;
- p->interactive_credit += VARYING_CREDIT(p);
+ p->interactive_credit += !(HIGH_CREDIT(p));
}
}
}
@@ -1548,7 +1545,8 @@ switch_tasks:
prev->sleep_avg -= run_time;
if ((long)prev->sleep_avg <= 0){
prev->sleep_avg = 0;
- prev->interactive_credit -= VARYING_CREDIT(prev);
+ prev->interactive_credit -=
+ !(HIGH_CREDIT(prev) || LOW_CREDIT(prev));
}
prev->timestamp = now;
\
 
 \ /
  Last update: 2005-03-22 13:48    [W:0.184 / U:3.588 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site