2.4-ac: sched_yield()

PATCH New Robert Love 1 participant 1 message Sep 11, 2002 Scheduler

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Robert Love

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2002-09-11 22:16 UTC #0 lore raw

PATCH 1/1 2.4-ac: sched_yield()

Hi Alan,

Following is a set of scheduler updates from 2.5. All should be sane and safe. I would prefer to toss you obviously correct/tested bits in pieces than a large single update. You can also get all of these at:
ftp://ftp.kernel.org/pub/linux/kernel/people/rml/sched/for_alan

Anyhow...

Attached patch gets sched_yield() right, fixing all outstanding issues. Really. (from Ingo)

Also implement 2.5's yield() which sets task->state to be safe. (from akpm)

Patch is against 2.4.20-pre5-ac4, please apply.

Robert Love

include/linux/sched.h +1 -3

diff -urN linux-2.4.20-pre5-ac4/include/linux/sched.h linux/include/linux/sched.h
@@ -486,9 +486,7 @@
 extern int task_prio(task_t *p);
 extern int task_nice(task_t *p);
 extern int idle_cpu(int cpu);
-
-asmlinkage long sys_sched_yield(void);
-#define yield() sys_sched_yield()
+extern void yield(void);
 
 /*
  * The default (Linux) execution domain.

kernel/ksyms.c +1 -1

diff -urN linux-2.4.20-pre5-ac4/kernel/ksyms.c linux/kernel/ksyms.c
@@ -455,7 +455,7 @@
 EXPORT_SYMBOL(interruptible_sleep_on_timeout);
 EXPORT_SYMBOL(schedule);
 EXPORT_SYMBOL(schedule_timeout);
-EXPORT_SYMBOL(sys_sched_yield);
+EXPORT_SYMBOL(yield);
 EXPORT_SYMBOL(set_user_nice);
 EXPORT_SYMBOL(task_nice);
 EXPORT_SYMBOL_GPL(idle_cpu);

kernel/sched.c +26 ~~-29~~

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