Messages in this thread Patch in this message | | | Date | Mon, 15 Apr 2013 16:06:21 +0800 | From | Wang YanQing <> | Subject | [PATCH 1/3] x86: reserve_crashkernel: use memblock_is_region_reserved to simplify code |
| |
Use memblock_is_region_reserved instead of memblock_find_in_range to simplify the check codes, and gain a little speed benefit.
Signed-off-by: Wang YanQing <udknight@gmail.com> --- arch/x86/kernel/setup.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 90d8cc9..9d60c85 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -577,11 +577,7 @@ static void __init reserve_crashkernel(void) } } else { - unsigned long long start; - - start = memblock_find_in_range(crash_base, - crash_base + crash_size, crash_size, 1<<20); - if (start != crash_base) { + if (memblock_is_region_reserved(crash_base, crash_size)) { pr_info("crashkernel reservation failed - memory is in use.\n"); return; } -- 1.7.12.4.dirty
| |