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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2009-09-22 16:45:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 07:39:41 -0700 |
| commit | 9492587cf35d370db33ef4b38375dfb35a105b61 (patch) | |
| tree | 59daaf91e847d3c5cd6f542626da75db5814b06d /arch | |
| parent | a0614da88b67ffa3dbcc0d40b817e682c7c4a0ee (diff) | |
| download | linux-stable-9492587cf35d370db33ef4b38375dfb35a105b61.tar.gz linux-stable-9492587cf35d370db33ef4b38375dfb35a105b61.tar.bz2 linux-stable-9492587cf35d370db33ef4b38375dfb35a105b61.zip | |
kcore: register text area in generic way
Some 64bit arch has special segment for mapping kernel text. It should be
entried to /proc/kcore in addtion to direct-linear-map, vmalloc area.
This patch unifies KCORE_TEXT entry scattered under x86 and ia64.
I'm not familiar with other archs (mips has its own even after this patch)
but range of [_stext ..._end) is a valid area of text and it's not in
direct-map area, defining CONFIG_ARCH_PROC_KCORE_TEXT is only a necessary
thing to do.
Note: I left mips as it is now.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ia64/Kconfig | 4 | ||||
| -rw-r--r-- | arch/ia64/mm/init.c | 3 | ||||
| -rw-r--r-- | arch/x86/Kconfig | 4 | ||||
| -rw-r--r-- | arch/x86/mm/init_64.c | 4 |
4 files changed, 10 insertions, 5 deletions
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 011a1cdf0eb5..6851e52ed5a2 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -500,6 +500,10 @@ config HAVE_ARCH_NODEDATA_EXTENSION def_bool y depends on NUMA +config ARCH_PROC_KCORE_TEXT + def_bool y + depends on PROC_KCORE + config IA32_SUPPORT bool "Support for Linux/x86 binaries" help diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index 286b98aa8547..3f95ea1d6fb6 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -617,7 +617,7 @@ mem_init (void) long reserved_pages, codesize, datasize, initsize; pg_data_t *pgdat; int i; - static struct kcore_list kcore_mem, kcore_kernel; + static struct kcore_list kcore_mem; BUG_ON(PTRS_PER_PGD * sizeof(pgd_t) != PAGE_SIZE); BUG_ON(PTRS_PER_PMD * sizeof(pmd_t) != PAGE_SIZE); @@ -640,7 +640,6 @@ mem_init (void) high_memory = __va(max_low_pfn * PAGE_SIZE); kclist_add(&kcore_mem, __va(0), max_low_pfn * PAGE_SIZE, KCORE_RAM); - kclist_add(&kcore_kernel, _stext, _end - _stext, KCORE_TEXT); for_each_online_pgdat(pgdat) if (pgdat->bdata->node_bootmem_map) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index e4ff5d1280ca..7c7a54bed4a6 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1204,6 +1204,10 @@ config ARCH_DISCONTIGMEM_DEFAULT def_bool y depends on NUMA && X86_32 +config ARCH_PROC_KCORE_TEXT + def_bool y + depends on X86_64 && PROC_KCORE + config ARCH_SPARSEMEM_DEFAULT def_bool y depends on X86_64 diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index da2cae7427a6..a0c2efb10cbe 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -647,8 +647,7 @@ EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid); #endif /* CONFIG_MEMORY_HOTPLUG */ -static struct kcore_list kcore_mem, kcore_kernel, - kcore_modules, kcore_vsyscall; +static struct kcore_list kcore_mem, kcore_modules, kcore_vsyscall; void __init mem_init(void) { @@ -678,7 +677,6 @@ void __init mem_init(void) /* Register memory areas for /proc/kcore */ kclist_add(&kcore_mem, __va(0), max_low_pfn << PAGE_SHIFT, KCORE_RAM); - kclist_add(&kcore_kernel, &_stext, _end - _stext, KCORE_TEXT); kclist_add(&kcore_modules, (void *)MODULES_VADDR, MODULES_LEN, KCORE_OTHER); kclist_add(&kcore_vsyscall, (void *)VSYSCALL_START, |