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authorMike Travis <travis@sgi.com>2009-01-01 04:34:16 +0300
committerIngo Molnar <mingo@elte.hu>2009-01-03 20:53:31 +0300
commit7eb19553369c46cc1fa64caf120cbcab1b597f7c (patch)
treeef1a3beae706b9497c845d0a2557ceb4d2754998 /arch/sh/kernel/head_32.S
parent6092848a2a23b660150a38bc06f59d75838d70c8 (diff)
parent8c384cdee3e04d6194a2c2b192b624754f990835 (diff)
downloadlinux-7eb19553369c46cc1fa64caf120cbcab1b597f7c.tar.xz
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask
Conflicts: arch/x86/kernel/io_apic.c kernel/rcuclassic.c kernel/sched.c kernel/time/tick-sched.c Signed-off-by: Mike Travis <travis@sgi.com> [ mingo@elte.hu: backmerged typo fix for io_apic.c ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/sh/kernel/head_32.S')
-rw-r--r--arch/sh/kernel/head_32.S12
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/sh/kernel/head_32.S b/arch/sh/kernel/head_32.S
index ae0a382a82eb..788605ff7088 100644
--- a/arch/sh/kernel/head_32.S
+++ b/arch/sh/kernel/head_32.S
@@ -80,8 +80,14 @@ ENTRY(_stext)
mov.l 7f, r0
ldc r0, r7_bank ! ... and initial thread_info
#endif
-
- ! Clear BSS area
+
+#ifndef CONFIG_SH_NO_BSS_INIT
+ /*
+ * Don't clear BSS if running on slow platforms such as an RTL simulation,
+ * remote memory via SHdebug link, etc. For these the memory can be guaranteed
+ * to be all zero on boot anyway.
+ */
+ ! Clear BSS area
#ifdef CONFIG_SMP
mov.l 3f, r0
cmp/eq #0, r0 ! skip clear if set to zero
@@ -97,6 +103,8 @@ ENTRY(_stext)
mov.l r0,@-r2
10:
+#endif
+
! Additional CPU initialization
mov.l 6f, r0
jsr @r0