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sparc64: Get rid of real_setup_per_cpu_areas().

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Now that we defer the cpu_data() initializations to the end of per-cpu
setup, we can get rid of this local hack we had to setup the per-cpu
areas eary.

This is a necessary step in order to support HAVE_DYNAMIC_PER_CPU_AREA
since the per-cpu setup must run when page structs are available.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2009-04-01 16:15:20 -07:00
parent b696fdc259
commit 73fffc037e
3 changed files with 5 additions and 17 deletions
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4
arch/sparc/include/asm/percpu_64.h
View File

@ -9,8 +9,6 @@ register unsigned long __local_per_cpu_offset asm("g5");
#include <asm/trap_block.h>
extern void real_setup_per_cpu_areas(void);
#define __per_cpu_offset(__cpu) \
(trap_block[(__cpu)].__per_cpu_base)
#define per_cpu_offset(x) (__per_cpu_offset(x))
@ -19,8 +17,6 @@ extern void real_setup_per_cpu_areas(void);
#else /* ! SMP */
#define real_setup_per_cpu_areas() do { } while (0)
#endif /* SMP */
#include <asm-generic/percpu.h>

11
arch/sparc/kernel/smp_64.c
View File

@ -20,7 +20,7 @@
#include <linux/cache.h>
#include <linux/jiffies.h>
#include <linux/profile.h>
#include <linux/lmb.h>
#include <linux/bootmem.h>
#include <linux/cpu.h>
#include <asm/head.h>
@ -1371,9 +1371,9 @@ void smp_send_stop(void)
{
}
void __init real_setup_per_cpu_areas(void)
void __init setup_per_cpu_areas(void)
{
unsigned long base, shift, paddr, goal, size, i;
unsigned long base, shift, goal, size, i;
char *ptr;
/* Copy section for each CPU (we discard the original) */
@ -1383,13 +1383,12 @@ void __init real_setup_per_cpu_areas(void)
for (size = PAGE_SIZE; size < goal; size <<= 1UL)
shift++;
paddr = lmb_alloc(size * NR_CPUS, PAGE_SIZE);
if (!paddr) {
ptr = __alloc_bootmem(size * NR_CPUS, PAGE_SIZE, 0);
if (!ptr) {
prom_printf("Cannot allocate per-cpu memory.\n");
prom_halt();
}
ptr = __va(paddr);
base = ptr - __per_cpu_start;
for (i = 0; i < NR_CPUS; i++, ptr += size) {

7
arch/sparc/mm/init_64.c
View File

@ -1679,11 +1679,6 @@ pgd_t swapper_pg_dir[2048];
static void sun4u_pgprot_init(void);
static void sun4v_pgprot_init(void);
/* Dummy function */
void __init setup_per_cpu_areas(void)
{
}
void __init paging_init(void)
{
unsigned long end_pfn, shift, phys_base;
@ -1807,8 +1802,6 @@ void __init paging_init(void)
mdesc_populate_present_mask(CPU_MASK_ALL_PTR);
}
real_setup_per_cpu_areas();
/* Once the OF device tree and MDESC have been setup, we know
* the list of possible cpus. Therefore we can allocate the
* IRQ stacks.