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[POWERPC] Initialise spinlock in the DEBUG_PAGEALLOC code
author
Michael Ellerman
<michael@ellerman.id.au>
Wed, 18 Apr 2007 01:50:09 +0000
(11:50 +1000)
committer
Paul Mackerras
<paulus@samba.org>
Wed, 2 May 2007 10:04:29 +0000
(20:04 +1000)
Fixes:
BUG: spinlock bad magic on CPU#0, swapper/0
lock:
c00000000064ec30
, .magic:
00000000
, .owner: <none>/-1, .owner_cpu: 0
Call Trace:
[
c00000000062b980
] [
c00000000000f920
] .show_stack+0x6c/0x1a0 (unreliable)
[
c00000000062ba20
] [
c0000000001c2b40
] .spin_bug+0xb0/0xd4
[
c00000000062bab0
] [
c0000000001c2ed0
] ._raw_spin_lock+0x44/0x184
[
c00000000062bb50
] [
c0000000003a42b4
] ._spin_lock+0x10/0x24
[
c00000000062bbd0
] [
c00000000002b4dc
] .kernel_map_pages+0x198/0x278
[
c00000000062bc90
] [
c000000000079720
] .free_hot_cold_page+0x124/0x418
[
c00000000062bd70
] [
c000000000530278
] .free_all_bootmem_core+0x14c/0x224
[
c00000000062be50
] [
c00000000052a178
] .mem_init+0x68/0x170
[
c00000000062bee0
] [
c00000000051d874
] .start_kernel+0x2a0/0x37c
[
c00000000062bf90
] [
c0000000000084c8
] .start_here_common+0x54/0x8c
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/powerpc/mm/hash_utils_64.c
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diff --git
a/arch/powerpc/mm/hash_utils_64.c
b/arch/powerpc/mm/hash_utils_64.c
index 49618461defbda9a4e2017477c1326530281272e..9b226fa7006fd51e32d497a813abce46a38766dd 100644
(file)
--- a/
arch/powerpc/mm/hash_utils_64.c
+++ b/
arch/powerpc/mm/hash_utils_64.c
@@
-103,7
+103,7
@@
int mmu_ci_restrictions;
#ifdef CONFIG_DEBUG_PAGEALLOC
static u8 *linear_map_hash_slots;
static unsigned long linear_map_hash_count;
-static
spinlock_t linear_map_hash_lock
;
+static
DEFINE_SPINLOCK(linear_map_hash_lock)
;
#endif /* CONFIG_DEBUG_PAGEALLOC */
/* There are definitions of page sizes arrays to be used when none