diff options
| author | Tejun Heo <tj@kernel.org> | 2009-01-13 11:41:35 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-16 13:20:03 (GMT) |
| commit | b12d8db8fbfaed1e8222a15333a3645599636854 (patch) | |
| tree | 4ae6ce55232885d0707eb464c5b43a54bdfe3ce4 /arch/x86/kernel/head64.c | |
| parent | 9939ddaff52787b2a7c1adf1b2afc95421aa0884 (diff) | |
| download | linux-b12d8db8fbfaed1e8222a15333a3645599636854.tar.xz | |
x86: make pda a percpu variable
[ Based on original patch from Christoph Lameter and Mike Travis. ]
As pda is now allocated in percpu area, it can easily be made a proper
percpu variable. Make it so by defining per cpu symbol from linker
script and declaring it in C code for SMP and simply defining it for
UP. This change cleans up code and brings SMP and UP closer a bit.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/head64.c')
| -rw-r--r-- | arch/x86/kernel/head64.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index e99b661..71b6f6e 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -26,18 +26,8 @@ #include <asm/bios_ebda.h> #include <asm/trampoline.h> -#ifndef CONFIG_SMP -/* boot cpu pda, referenced by head_64.S to initialize %gs on UP */ -struct x8664_pda _boot_cpu_pda; -#endif - void __init x86_64_init_pda(void) { -#ifdef CONFIG_SMP - cpu_pda(0) = (void *)__per_cpu_load; -#else - cpu_pda(0) = &_boot_cpu_pda; -#endif pda_init(0); } |