By just reversing the order memtest is using the test patterns, an additional round to zero the memory is not necessary.
This makes it a bit faster. Signed-off-by: Alexander Holler <[email protected]> --- arch/x86/mm/memtest.c | 11 ++--------- 1 files changed, 2 insertions(+), 9 deletions(-) diff --git a/arch/x86/mm/memtest.c b/arch/x86/mm/memtest.c index 855a6d5..da80083 100644 --- a/arch/x86/mm/memtest.c +++ b/arch/x86/mm/memtest.c @@ -9,7 +9,7 @@ #include <linux/memblock.h> static u64 patterns[] __initdata = { - 0, + 0, /* Has has to be 0 to leave memtest with zeroed memory */ 0xffffffffffffffffULL, 0x5555555555555555ULL, 0xaaaaaaaaaaaaaaaaULL, @@ -112,15 +112,8 @@ void __init early_memtest(unsigned long start, unsigned long end) return; pr_info("early_memtest: # of tests: %d\n", memtest_pattern); - for (i = 0; i < memtest_pattern; i++) { + for (i = memtest_pattern-1; i < UINT_MAX; --i) { idx = i % ARRAY_SIZE(patterns); do_one_pass(patterns[idx], start, end); } - - if (idx > 0) { - printk(KERN_INFO "early_memtest: wipe out " - "test pattern from memory\n"); - /* additional test with pattern 0 will do this */ - do_one_pass(0, start, end); - } } -- 1.7.8.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
