Re: [patch] fix sparc64 cpu_idle()

[Coywolf Qi Hunt <coywolf@gmail.com>]

Currently sparc and sparc64's UP cpu_idel() checks current pid. This
is paranoia.
 
Signed-off-by: Coywolf Qi Hunt <coywolf@gmail.com>

 sparc/kernel/process.c   |   10 +---------
 sparc64/kernel/process.c |    6 +-----
 2 files changed, 2 insertions(+), 14 deletions(-)

diff -Nurp 2.6.10/arch/sparc/kernel/process.c
2.6.10-cy/arch/sparc/kernel/process.c
--- 2.6.10/arch/sparc/kernel/process.c	2004-12-29 01:27:57.000000000 +0800
+++ 2.6.10-cy/arch/sparc/kernel/process.c	2004-12-30 03:41:53.000000000 +0800
@@ -81,13 +81,8 @@ void default_idle(void)
 /*
  * the idle loop on a Sparc... ;)
  */
-int cpu_idle(void)
+void cpu_idle(void)
 {
-	int ret = -EPERM;
-
-	if (current->pid != 0)
-		goto out;
-
 	/* endless idle loop with no priority at all */
 	for (;;) {
 		if (ARCH_SUN4C_SUN4) {
@@ -128,9 +123,6 @@ int cpu_idle(void)
 		schedule();
 		check_pgt_cache();
 	}
-	ret = 0;
-out:
-	return ret;
 }
 
 #else
diff -Nurp 2.6.10/arch/sparc64/kernel/process.c
2.6.10-cy/arch/sparc64/kernel/process.c
--- 2.6.10/arch/sparc64/kernel/process.c	2004-12-30 02:52:40.000000000 +0800
+++ 2.6.10-cy/arch/sparc64/kernel/process.c	2004-12-30 02:57:40.000000000 +0800
@@ -60,11 +60,8 @@ void default_idle(void)
 /*
  * the idle loop on a Sparc... ;)
  */
-int cpu_idle(void)
+void cpu_idle(void)
 {
-	if (current->pid != 0)
-		return -EPERM;
-
 	/* endless idle loop with no priority at all */
 	for (;;) {
 		/* If current->work.need_resched is zero we should really
@@ -80,7 +77,6 @@ int cpu_idle(void)
 		schedule();
 		check_pgt_cache();
 	}
-	return 0;
 }
 
 #else



-- 
Coywolf Qi Hunt
Homepage http://sosdg.org/~coywolf/