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authorPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>2006-03-31 05:30:18 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-31 15:18:51 -0500
commit12523bdce1a6b5a3a2627b9901162bbd3eef33ed (patch)
tree02e9807abdd6df71468d61a9883510541f765ecb /arch/um
parente11c0cdf4c6f7976e6f4fe221369a7b420245389 (diff)
[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>
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/kernel/process_kern.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/um/kernel/process_kern.c b/arch/um/kernel/process_kern.c
index 6922bdfb5ad5..ba8a52c1f7ae 100644
--- a/arch/um/kernel/process_kern.c
+++ b/arch/um/kernel/process_kern.c
@@ -185,10 +185,6 @@ void default_idle(void)
185{ 185{
186 CHOOSE_MODE(uml_idle_timer(), (void) 0); 186 CHOOSE_MODE(uml_idle_timer(), (void) 0);
187 187
188 atomic_inc(&init_mm.mm_count);
189 current->mm = &init_mm;
190 current->active_mm = &init_mm;
191
192 while(1){ 188 while(1){
193 /* endless idle loop with no priority at all */ 189 /* endless idle loop with no priority at all */
194 190