提交 aa026ede 编写于 作者: A Andi Kleen 提交者: Andi Kleen

[PATCH] x86-64: Fix C3 timer test

There was a typo in the C3 latency test to decide of the TSC
should be used or not. It used the C2 latency threshold, not the
C3 one. Fix that.

This should fix the time on various dual core laptops.
Signed-off-by: NAndi Kleen <ak@suse.de>
上级 cb7fabcf
......@@ -948,7 +948,7 @@ __cpuinit int unsynchronized_tsc(void)
if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) {
#ifdef CONFIG_ACPI
/* But TSC doesn't tick in C3 so don't use it there */
if (acpi_fadt.length > 0 && acpi_fadt.plvl3_lat < 100)
if (acpi_fadt.length > 0 && acpi_fadt.plvl3_lat < 1000)
return 1;
#endif
return 0;
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册