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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-23 00:18:12 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-23 00:18:12 -0400
commit31950eb66ff47c946fd9c65c2f8c94b6b7ba13fc (patch)
tree1ab1e09bbe7a0b33bbf19dd725172827bac5bb88 /init
parentac1b7c378ef26fba6694d5f118fe7fc16fee2fe2 (diff)
mm/init: cpu_hotplug_init() must be initialized before SLAB
SLAB uses get/put_online_cpus() which use a mutex which is itself only initialized when cpu_hotplug_init() is called. Currently we hang suring boot in SLAB due to doing that too late. Reported by James Bottomley and Sachin Sant (and possibly others). Debugged by Benjamin Herrenschmidt. This just removes the dynamic initialization of the data structures, and replaces it with a static one, avoiding this dependency entirely, and removing one unnecessary special initcall. Tested-by: Sachin Sant <sachinp@in.ibm.com> Tested-by: James Bottomley <James.Bottomley@HansenPartnership.com> Tested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init')
-rw-r--r--init/main.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/init/main.c b/init/main.c
index 09131ec090c1..4870dfeb9ee5 100644
--- a/init/main.c
+++ b/init/main.c
@@ -678,7 +678,6 @@ asmlinkage void __init start_kernel(void)
678#endif 678#endif
679 page_cgroup_init(); 679 page_cgroup_init();
680 enable_debug_pagealloc(); 680 enable_debug_pagealloc();
681 cpu_hotplug_init();
682 kmemtrace_init(); 681 kmemtrace_init();
683 kmemleak_init(); 682 kmemleak_init();
684 debug_objects_mem_init(); 683 debug_objects_mem_init();