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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-05-20 13:22:15 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-05-20 13:22:15 +0200 |
| commit | 55cc33ceb75643d190ed215f423972e0b7ae7aeb (patch) | |
| tree | e9573d995bfae0f81ce800433b424bb998f90eca /kernel/power | |
| parent | ACPI / PM: Hold ACPI scan lock over the "freeze" sleep state (diff) | |
| parent | PM / sleep: Update device PM documentation to cover direct_complete (diff) | |
| download | linux-55cc33ceb75643d190ed215f423972e0b7ae7aeb.tar.xz linux-55cc33ceb75643d190ed215f423972e0b7ae7aeb.zip | |
Merge branch 'pm-sleep' into acpi-pm
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/hibernate.c | 27 | ||||
| -rw-r--r-- | kernel/power/suspend.c | 2 |
2 files changed, 20 insertions, 9 deletions
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index f4f2073711d3..df88d55dc436 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -35,7 +35,7 @@ static int nocompress; static int noresume; static int resume_wait; -static int resume_delay; +static unsigned int resume_delay; static char resume_file[256] = CONFIG_PM_STD_PARTITION; dev_t swsusp_resume_device; sector_t swsusp_resume_block; @@ -228,19 +228,23 @@ static void platform_recover(int platform_mode) void swsusp_show_speed(struct timeval *start, struct timeval *stop, unsigned nr_pages, char *msg) { - s64 elapsed_centisecs64; - int centisecs; - int k; - int kps; + u64 elapsed_centisecs64; + unsigned int centisecs; + unsigned int k; + unsigned int kps; elapsed_centisecs64 = timeval_to_ns(stop) - timeval_to_ns(start); + /* + * If "(s64)elapsed_centisecs64 < 0", it will print long elapsed time, + * it is obvious enough for what went wrong. + */ do_div(elapsed_centisecs64, NSEC_PER_SEC / 100); centisecs = elapsed_centisecs64; if (centisecs == 0) centisecs = 1; /* avoid div-by-zero */ k = nr_pages * (PAGE_SIZE / 1024); kps = (k * 100) / centisecs; - printk(KERN_INFO "PM: %s %d kbytes in %d.%02d seconds (%d.%02d MB/s)\n", + printk(KERN_INFO "PM: %s %u kbytes in %u.%02u seconds (%u.%02u MB/s)\n", msg, k, centisecs / 100, centisecs % 100, kps / 1000, (kps % 1000) / 10); @@ -595,7 +599,8 @@ static void power_down(void) case HIBERNATION_PLATFORM: hibernation_platform_enter(); case HIBERNATION_SHUTDOWN: - kernel_power_off(); + if (pm_power_off) + kernel_power_off(); break; #ifdef CONFIG_SUSPEND case HIBERNATION_SUSPEND: @@ -623,7 +628,8 @@ static void power_down(void) * corruption after resume. */ printk(KERN_CRIT "PM: Please power down manually\n"); - while(1); + while (1) + cpu_relax(); } /** @@ -1109,7 +1115,10 @@ static int __init resumewait_setup(char *str) static int __init resumedelay_setup(char *str) { - resume_delay = simple_strtoul(str, NULL, 0); + int rc = kstrtouint(str, 0, &resume_delay); + + if (rc) + return rc; return 1; } diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 73a905f83972..b62bea0bb624 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -62,9 +62,11 @@ static void freeze_begin(void) static void freeze_enter(void) { + cpuidle_use_deepest_state(true); cpuidle_resume(); wait_event(suspend_freeze_wait_head, suspend_freeze_wake); cpuidle_pause(); + cpuidle_use_deepest_state(false); } void freeze_wake(void) |