Revision 966f1212e1ac5fe3ddf04479d21488ddb36a2608 authored by Lin Ming on 16 January 2012, 05:23:23 UTC, committed by Jeff Garzik on 18 January 2012, 01:48:06 UTC
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 <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
1 parent a25a2b8
kc.h
/*
* PPS kernel consumer API header
*
* Copyright (C) 2009-2010 Alexander Gordeev <lasaine@lvk.cs.msu.su>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef LINUX_PPS_KC_H
#define LINUX_PPS_KC_H
#include <linux/errno.h>
#include <linux/pps_kernel.h>
#ifdef CONFIG_NTP_PPS
extern int pps_kc_bind(struct pps_device *pps,
struct pps_bind_args *bind_args);
extern void pps_kc_remove(struct pps_device *pps);
extern void pps_kc_event(struct pps_device *pps,
struct pps_event_time *ts, int event);
#else /* CONFIG_NTP_PPS */
static inline int pps_kc_bind(struct pps_device *pps,
struct pps_bind_args *bind_args) { return -EOPNOTSUPP; }
static inline void pps_kc_remove(struct pps_device *pps) {}
static inline void pps_kc_event(struct pps_device *pps,
struct pps_event_time *ts, int event) {}
#endif /* CONFIG_NTP_PPS */
#endif /* LINUX_PPS_KC_H */
Computing file changes ...
