hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[PATCH] uml: idle thread needn't take access to init_mm 

Comparing this code which is the actual body of the arch-independent
cpu_idle(), it is clear that it's unnecessary to set ->mm and ->active_mm;
beyond that, a kernel thread is not supposed to have ->mm != NULL, only
active_mm.

This showed up because I used the assumption (which is IMHO valid) that kernel
thread have their ->mm == NULL, and it failed for this thread.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Paolo 'Blaisorblade' Giarrusso 2006-03-31 02:30:18 -08:00 committed by Linus Torvalds
parent e11c0cdf4c
commit 12523bdce1
1 changed files with 0 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/um/kernel/process_kern.c
View File

@ -185,10 +185,6 @@ void default_idle(void)
{
CHOOSE_MODE(uml_idle_timer(), (void) 0);
atomic_inc(&init_mm.mm_count);
current->mm = &init_mm;
current->active_mm = &init_mm;
while(1){
/* endless idle loop with no priority at all */