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author | Vegard Nossum <vegard.nossum@gmail.com> | 2009-06-15 15:50:49 +0200 |
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committer | Vegard Nossum <vegard.nossum@gmail.com> | 2009-06-15 15:50:49 +0200 |
commit | 722f2a6c87f34ee0fd0130a8cf45f81e0705594a (patch) | |
tree | 50b054df34d2731eb0ba0cf1a6c27e43e7eed428 /arch/blackfin/mm | |
parent | 7a0aeb14e18ad59394bd9bbc6e57fb345819e748 (diff) | |
parent | 45e3e1935e2857c54783291107d33323b3ef33c8 (diff) |
Merge commit 'linus/master' into HEAD
Conflicts:
MAINTAINERS
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Diffstat (limited to 'arch/blackfin/mm')
-rw-r--r-- | arch/blackfin/mm/blackfin_sram.h | 1 | ||||
-rw-r--r-- | arch/blackfin/mm/init.c | 33 | ||||
-rw-r--r-- | arch/blackfin/mm/isram-driver.c | 2 | ||||
-rw-r--r-- | arch/blackfin/mm/sram-alloc.c | 21 |
4 files changed, 31 insertions, 26 deletions
diff --git a/arch/blackfin/mm/blackfin_sram.h b/arch/blackfin/mm/blackfin_sram.h index 8cb0945563f..bc0062884fd 100644 --- a/arch/blackfin/mm/blackfin_sram.h +++ b/arch/blackfin/mm/blackfin_sram.h @@ -30,7 +30,6 @@ #ifndef __BLACKFIN_SRAM_H__ #define __BLACKFIN_SRAM_H__ -extern void bfin_sram_init(void); extern void *l1sram_alloc(size_t); #endif diff --git a/arch/blackfin/mm/init.c b/arch/blackfin/mm/init.c index 9c3629b9a68..014a55abd09 100644 --- a/arch/blackfin/mm/init.c +++ b/arch/blackfin/mm/init.c @@ -52,9 +52,14 @@ static unsigned long empty_bad_page_table; static unsigned long empty_bad_page; -unsigned long empty_zero_page; +static unsigned long empty_zero_page; -extern unsigned long exception_stack[NR_CPUS][1024]; +#ifndef CONFIG_EXCEPTION_L1_SCRATCH +#if defined CONFIG_SYSCALL_TAB_L1 +__attribute__((l1_data)) +#endif +static unsigned long exception_stack[NR_CPUS][1024]; +#endif struct blackfin_pda cpu_pda[NR_CPUS]; EXPORT_SYMBOL(cpu_pda); @@ -117,19 +122,18 @@ asmlinkage void __init init_pda(void) cpu_pda[0].next = &cpu_pda[1]; cpu_pda[1].next = &cpu_pda[0]; +#ifdef CONFIG_EXCEPTION_L1_SCRATCH + cpu_pda[cpu].ex_stack = (unsigned long *)(L1_SCRATCH_START + \ + L1_SCRATCH_LENGTH); +#else cpu_pda[cpu].ex_stack = exception_stack[cpu + 1]; +#endif #ifdef CONFIG_SMP cpu_pda[cpu].imask = 0x1f; #endif } -void __cpuinit reserve_pda(void) -{ - printk(KERN_INFO "PDA for CPU%u reserved at %p\n", smp_processor_id(), - &cpu_pda[smp_processor_id()]); -} - void __init mem_init(void) { unsigned int codek = 0, datak = 0, initk = 0; @@ -171,19 +175,6 @@ void __init mem_init(void) initk, codek, datak, DMA_UNCACHED_REGION >> 10, (reservedpages << (PAGE_SHIFT-10))); } -static int __init sram_init(void) -{ - /* Initialize the blackfin L1 Memory. */ - bfin_sram_init(); - - /* Reserve the PDA space for the boot CPU right after we - * initialized the scratch memory allocator. - */ - reserve_pda(); - return 0; -} -pure_initcall(sram_init); - static void __init free_init_pages(const char *what, unsigned long begin, unsigned long end) { unsigned long addr; diff --git a/arch/blackfin/mm/isram-driver.c b/arch/blackfin/mm/isram-driver.c index 22913e7a181..c080e70f98b 100644 --- a/arch/blackfin/mm/isram-driver.c +++ b/arch/blackfin/mm/isram-driver.c @@ -125,7 +125,7 @@ static bool isram_check_addr(const void *addr, size_t n) { if ((addr >= (void *)L1_CODE_START) && (addr < (void *)(L1_CODE_START + L1_CODE_LENGTH))) { - if ((addr + n) >= (void *)(L1_CODE_START + L1_CODE_LENGTH)) { + if ((addr + n) > (void *)(L1_CODE_START + L1_CODE_LENGTH)) { show_stack(NULL, NULL); printk(KERN_ERR "isram_memcpy: copy involving %p length " "(%zu) too long\n", addr, n); diff --git a/arch/blackfin/mm/sram-alloc.c b/arch/blackfin/mm/sram-alloc.c index 530d1393a23..0bc3c4ef0aa 100644 --- a/arch/blackfin/mm/sram-alloc.c +++ b/arch/blackfin/mm/sram-alloc.c @@ -83,6 +83,14 @@ static struct kmem_cache *sram_piece_cache; static void __init l1sram_init(void) { unsigned int cpu; + unsigned long reserve; + +#ifdef CONFIG_SMP + reserve = 0; +#else + reserve = sizeof(struct l1_scratch_task_info); +#endif + for (cpu = 0; cpu < num_possible_cpus(); ++cpu) { per_cpu(free_l1_ssram_head, cpu).next = kmem_cache_alloc(sram_piece_cache, GFP_KERNEL); @@ -91,8 +99,8 @@ static void __init l1sram_init(void) return; } - per_cpu(free_l1_ssram_head, cpu).next->paddr = (void *)get_l1_scratch_start_cpu(cpu); - per_cpu(free_l1_ssram_head, cpu).next->size = L1_SCRATCH_LENGTH; + per_cpu(free_l1_ssram_head, cpu).next->paddr = (void *)get_l1_scratch_start_cpu(cpu) + reserve; + per_cpu(free_l1_ssram_head, cpu).next->size = L1_SCRATCH_LENGTH - reserve; per_cpu(free_l1_ssram_head, cpu).next->pid = 0; per_cpu(free_l1_ssram_head, cpu).next->next = NULL; @@ -223,7 +231,7 @@ static void __init l2_sram_init(void) spin_lock_init(&l2_sram_lock); } -void __init bfin_sram_init(void) +static int __init bfin_sram_init(void) { sram_piece_cache = kmem_cache_create("sram_piece_cache", sizeof(struct sram_piece), @@ -233,7 +241,10 @@ void __init bfin_sram_init(void) l1_data_sram_init(); l1_inst_sram_init(); l2_sram_init(); + + return 0; } +pure_initcall(bfin_sram_init); /* SRAM allocate function */ static void *_sram_alloc(size_t size, struct sram_piece *pfree_head, @@ -732,6 +743,10 @@ found: } EXPORT_SYMBOL(sram_free_with_lsl); +/* Allocate memory and keep in L1 SRAM List (lsl) so that the resources are + * tracked. These are designed for userspace so that when a process exits, + * we can safely reap their resources. + */ void *sram_alloc_with_lsl(size_t size, unsigned long flags) { void *addr = NULL; |