In 2.4.0-test3, task_struct->priority became task_struct->nice,
and the number stored in the field changed, apparently according to
the following relationship:
task_struct->nice = 20 - task_struct->priority;
Also, the bounds appear to be different. task_struct->priority
ranged from 0..40 (41 possible values), while task_struct->nice
ranges from -20 to 19 (40 possible values). So, priority=0 maps
to nice=19.
Anyhow, there were a few places where this change was not
made and various files in -test3 do not compile. I believe this
patch fixes all such instances.
One minor note: in the case of IRIX executables, I think
the original translation that it was making of may have been in
error, since it would pass a nice value of "5" for a process of
normal priority, which I think probably was supposed to be zero.
So, I have changed it accordingly, but I would encourage an irix
person to look at it. My suspicion is the information that the
irix loader passes is probably never used in practice anyhow.
The patch is attached below.
Adam J. Richter __ ______________ 4880 Stevens Creek Blvd, Suite 104
adam@yggdrasil.com \ / San Jose, California 95129-1034
+1 408 261-6630 | g g d r a s i l United States of America
fax +1 408 261-6631 "Free Software For The Rest Of Us."
--- linux-2.4.0-test3/./drivers/block/md.c Fri Jul 7 15:53:58 2000
+++ linux/./drivers/block/md.c Mon Jul 10 22:21:26 2000
@@ -2908,7 +2908,7 @@
* many dirty RAID5 blocks.
*/
current->policy = SCHED_OTHER;
- current->priority = 40;
+ current->nice = -20;
// md_unlock_kernel();
up(thread->sem);
@@ -3336,7 +3336,7 @@
/*
* Resync has low priority.
*/
- current->priority = 1;
+ current->nice = 18;
is_mddev_idle(mddev); /* this also initializes IO event counters */
for (m = 0; m < SYNC_MARKS; m++) {
@@ -3412,7 +3412,7 @@
currspeed = (j-mddev->resync_mark_cnt)/((jiffies-mddev->resync_mark)/HZ +1) +1;
if (currspeed > sysctl_speed_limit_min) {
- current->priority = 1;
+ current->nice = 18;
if ((currspeed > sysctl_speed_limit_max) ||
!is_mddev_idle(mddev)) {
@@ -3422,7 +3422,7 @@
goto repeat;
}
} else
- current->priority = 40;
+ current->nice = -20;
}
fsync_dev(read_disk);
printk(KERN_INFO "md: md%d: sync done.\n",mdidx(mddev));
--- linux-2.4.0-test3/./drivers/macintosh/via-pmu.c Tue Jun 20 14:14:50 2000
+++ linux/./drivers/macintosh/via-pmu.c Mon Jul 10 22:21:28 2000
@@ -1036,7 +1036,7 @@
for (list = sleep_notifiers.next; list != &sleep_notifiers;
list = list->next) {
current = list_entry(list, struct pmu_sleep_notifier, list);
- if (n->priority > current->priority)
+ if (n->nice < current->nice)
break;
}
__list_add(&n->list, list->prev, list);
--- linux-2.4.0-test3/./arch/sparc/kernel/process.c Mon Jul 10 13:16:56 2000
+++ linux/./arch/sparc/kernel/process.c Mon Jul 10 22:21:22 2000
@@ -109,7 +109,7 @@
int cpu_idle(void)
{
/* endless idle loop with no priority at all */
- current->priority = 0;
+ current->nice = 19;
current->counter = -100;
init_idle();
--- linux-2.4.0-test3/./arch/mips/kernel/irixelf.c Sun Jul 9 22:18:15 2000
+++ linux/./arch/mips/kernel/irixelf.c Mon Jul 10 22:21:18 2000
@@ -1156,7 +1156,7 @@
psinfo.pr_state = i;
psinfo.pr_sname = (i < 0 || i > 5) ? '.' : "RSDZTD"[i];
psinfo.pr_zomb = psinfo.pr_sname == 'Z';
- psinfo.pr_nice = current->priority-15;
+ psinfo.pr_nice = -current->nice;
psinfo.pr_flag = current->flags;
psinfo.pr_uid = current->uid;
psinfo.pr_gid = current->gid;
--- linux-2.4.0-test3/./arch/ppc/kernel/idle.c Mon Apr 24 13:39:36 2000
+++ linux/./arch/ppc/kernel/idle.c Mon Jul 10 22:21:20 2000
@@ -48,7 +48,7 @@
int idled(void)
{
/* endless loop with no priority at all */
- current->priority = 0;
+ current->nice = 19;
current->counter = -100;
init_idle();
for (;;)
--- linux-2.4.0-test3/./arch/sparc64/kernel/process.c Mon Jul 10 13:16:56 2000
+++ linux/./arch/sparc64/kernel/process.c Mon Jul 10 22:21:24 2000
@@ -80,7 +80,7 @@
#define unidle_me() (cpu_data[current->processor].idle_volume = 0)
int cpu_idle(void)
{
- current->priority = 0;
+ current->nice = 19;
current->counter = -100;
init_idle();
-
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