From: Lin Ming Date: Mon, 16 Jan 2012 05:23:23 +0000 (+0800) Subject: [libata] enable ata port async suspend X-Git-Tag: v3.3-rc1~20^2~4 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=966f1212e1ac5fe3ddf04479d21488ddb36a2608;p=pandora-kernel.git [libata] enable ata port async suspend This saves devices suspend/resume time. Tested system suspend/resume with SATA IDE/AHCI mode 3 times. Below is the time took for devices suspend/resume. SATA mode vanilla-kernel patched-kernel --------- --------------------- --------------------- IDE suspend: 0.744 suspend: 0.432 (0.716, 0.768, 0.748) (0.440, 0.428, 0.428) resume: 5.084 resume: 2.209 (5.100, 5.064, 5.088) (2.168, 2.232, 2.228) AHCI: suspend: 0.725 suspend: 0.449 (0.740, 0.708, 0.728) (0.456, 0.448, 0.444) resume: 2.556 resume: 1.896 (2.604, 2.492, 2.572) (1.932, 1.872, 1.884) Signed-off-by: Lin Ming Signed-off-by: Jeff Garzik --- Reading git-diff-tree failed