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x86: use static _cpu_pda array

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_cpu_pda array first uses statically allocated storage in data.init
and then switches to allocated bootmem to conserve space.  However,
after folding pda area into percpu area, _cpu_pda array will be
removed completely.  Drop the reallocation part to simplify the code
for soon-to-follow changes.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Tejun Heo 2009-01-13 20:41:35 +09:00 • committed by Ingo Molnar
commit c8f3329a0d
4 changed files with 6 additions and 25 deletions
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3
arch/x86/include/asm/pda.h
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@ -5,6 +5,7 @@
#include <linux/stddef.h>
#include <linux/types.h>
#include <linux/cache.h>
#include <linux/threads.h>
#include <asm/page.h>
/* Per processor datastructure. %gs points to it while the kernel runs */
@ -39,7 +40,7 @@ struct x8664_pda {
unsigned irq_spurious_count;
} ____cacheline_aligned_in_smp;
extern struct x8664_pda **_cpu_pda;
extern struct x8664_pda *_cpu_pda[NR_CPUS];
extern void pda_init(int);
#define cpu_pda(i) (_cpu_pda[i])