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| author | Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> | 2006-03-31 02:30:18 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-31 12:18:51 -0800 |
| commit | 12523bdce1a6b5a3a2627b9901162bbd3eef33ed (patch) | |
| tree | 02e9807abdd6df71468d61a9883510541f765ecb /arch | |
| parent | e11c0cdf4c6f7976e6f4fe221369a7b420245389 (diff) | |
| download | blackbird-op-linux-12523bdce1a6b5a3a2627b9901162bbd3eef33ed.tar.gz blackbird-op-linux-12523bdce1a6b5a3a2627b9901162bbd3eef33ed.zip | |
[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')
| -rw-r--r-- | arch/um/kernel/process_kern.c | 4 |
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) { 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 */ |
