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authorIngo Molnar <mingo@elte.hu>2005-06-28 16:40:42 +0200
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-28 14:56:51 -0700
commitf340c0d1a3f40fdcba69cd291530a4debc58748f (patch)
tree22fca5983aff6ce2aa7d4ede0b031666dfe1f28d /init/main.c
parent[PATCH] ll_rw_blk: prevent huge request allocations (diff)
downloadlinux-dev-f340c0d1a3f40fdcba69cd291530a4debc58748f.tar.xz
linux-dev-f340c0d1a3f40fdcba69cd291530a4debc58748f.zip
[PATCH] Tweak idle thread setup semantics
This patch tweaks idle thread setup semantics a bit: instead of setting NEED_RESCHED in init_idle(), we do an explicit schedule() before calling into cpu_idle(). This patch, while having no negative side-effects, enables wider use of cond_resched()s. (which might happen in the stock kernel too, but it's particulary important for voluntary-preempt) Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'init/main.c')
-rw-r--r--init/main.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/init/main.c b/init/main.c
index d324801729ba..b5e421e39ede 100644
--- a/init/main.c
+++ b/init/main.c
@@ -383,6 +383,13 @@ static void noinline rest_init(void)
numa_default_policy();
unlock_kernel();
preempt_enable_no_resched();
+
+ /*
+ * The boot idle thread must execute schedule()
+ * at least one to get things moving:
+ */
+ schedule();
+
cpu_idle();
}