On Thu, Dec 14, 2017 at 12:02:42AM +0800, Yu Chen wrote:

On Wed, Dec 13, 2017 at 01:31:50AM +0100, Rafael J. Wysocki wrote:

quoted

On Tuesday, October 31, 2017 10:58:50 AM CET Yu Chen wrote:

[snip]

quoted

quoted

In one word, with the patch applied, the cpu online time during resume
has decreased by about 6 seconds on a bogus MTRR platform, and decreased
by about 600ms on a 88 cpus Xeon platform after resumed.

Cc: Len Brown <redacted>
Cc: Rafael J. Wysocki <redacted>
Cc: Rui Zhang <rui.zhang@intel.com>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>

It will be better to combine this with patch [2/3] IMO, because that makes
it clear why the changes in that patch are needed.

Also you can define the new flag in mtrr/main.c, set it in
arch_enable_nonboot_cpus_begin() and clear it in
arch_enable_nonboot_cpus_end().  It is better to put it into the
arch-specific code as the flag itself is arch-specific.

Then, of course, you don't need patch [1/3] and all can be done in one
 patch.

Ok, will rewrite the patch, thanks! 

Just for the record, this series cuts down resume time from system sleep
by 4-5 seconds on my MacBookPro9,1.  Great work, looking forward to this
being respun and merged.

Tested-by: Lukas Wunner <lukas@wunner.de>

Thanks,

Lukas