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Power management updates for v4.15-rc1

Browse source 
- Relocate the OPP (Operating Performance Points) framework to its
    own directory under drivers/ and add support for power domain
    performance states to it (Viresh Kumar).
 
  - Modify the PM core, the PCI bus type and the ACPI PM domain to
    support power management driver flags allowing device drivers to
    specify their capabilities and preferences regarding the handling
    of devices with enabled runtime PM during system suspend/resume
    and clean up that code somewhat (Rafael Wysocki, Ulf Hansson).
 
  - Add frequency-invariant accounting support to the task scheduler
    on ARM and ARM64 (Dietmar Eggemann).
 
  - Fix PM QoS device resume latency framework to prevent "no
    restriction" requests from overriding requests with specific
    requirements and drop the confusing PM_QOS_FLAG_REMOTE_WAKEUP
    device PM QoS flag (Rafael Wysocki).
 
  - Drop legacy class suspend/resume operations from the PM core
    and drop legacy bus type suspend and resume callbacks from
    ARM/locomo (Rafael Wysocki).
 
  - Add min/max frequency support to devfreq and clean it up
    somewhat (Chanwoo Choi).
 
  - Rework wakeup support in the generic power domains (genpd)
    framework and update some of its users accordingly (Geert
    Uytterhoeven).
 
  - Convert timers in the PM core to use timer_setup() (Kees Cook).
 
  - Add support for exposing the SLP_S0 (Low Power S0 Idle)
    residency counter based on the LPIT ACPI table on Intel
    platforms (Srinivas Pandruvada).
 
  - Add per-CPU PM QoS resume latency support to the ladder cpuidle
    governor (Ramesh Thomas).
 
  - Fix a deadlock between the wakeup notify handler and the
    notifier removal in the ACPI core (Ville Syrjälä).
 
  - Fix a cpufreq schedutil governor issue causing it to use
    stale cached frequency values sometimes (Viresh Kumar).
 
  - Fix an issue in the system suspend core support code causing
    wakeup events detection to fail in some cases (Rajat Jain).
 
  - Fix the generic power domains (genpd) framework to prevent
    the PM core from using the direct-complete optimization with
    it as that is guaranteed to fail (Ulf Hansson).
 
  - Fix a minor issue in the cpuidle core and clean it up a bit
    (Gaurav Jindal, Nicholas Piggin).
 
  - Fix and clean up the intel_idle and ARM cpuidle drivers (Jason
    Baron, Len Brown, Leo Yan).
 
  - Fix a couple of minor issues in the OPP framework and clean it
    up (Arvind Yadav, Fabio Estevam, Sudeep Holla, Tobias Jordan).
 
  - Fix and clean up some cpufreq drivers and fix a minor issue in
    the cpufreq statistics code (Arvind Yadav, Bhumika Goyal, Fabio
    Estevam, Gautham Shenoy, Gustavo Silva, Marek Szyprowski, Masahiro
    Yamada, Robert Jarzmik, Zumeng Chen).
 
  - Fix minor issues in the system suspend and hibernation core, in
    power management documentation and in the AVS (Adaptive Voltage
    Scaling) framework (Helge Deller, Himanshu Jha, Joe Perches,
    Rafael Wysocki).
 
  - Fix some issues in the cpupower utility and document that Shuah
    Khan is going to maintain it going forward (Prarit Bhargava,
    Shuah Khan).
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Merge tag 'pm-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "There are no real big ticket items here this time.

  The most noticeable change is probably the relocation of the OPP
  (Operating Performance Points) framework to its own directory under
  drivers/ as it has grown big enough for that. Also Viresh is now going
  to maintain it and send pull requests for it to me, so you will see
  this change in the git history going forward (but still not right
  now).

  Another noticeable set of changes is the modifications of the PM core,
  the PCI subsystem and the ACPI PM domain to allow of more integration
  between system-wide suspend/resume and runtime PM. For now it's just a
  way to avoid resuming devices from runtime suspend unnecessarily
  during system suspend (if the driver sets a flag to indicate its
  readiness for that) and in the works is an analogous mechanism to
  allow devices to stay suspended after system resume.

  In addition to that, we have some changes related to supporting
  frequency-invariant CPU utilization metrics in the scheduler and in
  the schedutil cpufreq governor on ARM and changes to add support for
  device performance states to the generic power domains (genpd)
  framework.

  The rest is mostly fixes and cleanups of various sorts.

  Specifics:

   - Relocate the OPP (Operating Performance Points) framework to its
     own directory under drivers/ and add support for power domain
     performance states to it (Viresh Kumar).

   - Modify the PM core, the PCI bus type and the ACPI PM domain to
     support power management driver flags allowing device drivers to
     specify their capabilities and preferences regarding the handling
     of devices with enabled runtime PM during system suspend/resume and
     clean up that code somewhat (Rafael Wysocki, Ulf Hansson).

   - Add frequency-invariant accounting support to the task scheduler on
     ARM and ARM64 (Dietmar Eggemann).

   - Fix PM QoS device resume latency framework to prevent "no
     restriction" requests from overriding requests with specific
     requirements and drop the confusing PM_QOS_FLAG_REMOTE_WAKEUP
     device PM QoS flag (Rafael Wysocki).

   - Drop legacy class suspend/resume operations from the PM core and
     drop legacy bus type suspend and resume callbacks from ARM/locomo
     (Rafael Wysocki).

   - Add min/max frequency support to devfreq and clean it up somewhat
     (Chanwoo Choi).

   - Rework wakeup support in the generic power domains (genpd)
     framework and update some of its users accordingly (Geert
     Uytterhoeven).

   - Convert timers in the PM core to use timer_setup() (Kees Cook).

   - Add support for exposing the SLP_S0 (Low Power S0 Idle) residency
     counter based on the LPIT ACPI table on Intel platforms (Srinivas
     Pandruvada).

   - Add per-CPU PM QoS resume latency support to the ladder cpuidle
     governor (Ramesh Thomas).

   - Fix a deadlock between the wakeup notify handler and the notifier
     removal in the ACPI core (Ville Syrjälä).

   - Fix a cpufreq schedutil governor issue causing it to use stale
     cached frequency values sometimes (Viresh Kumar).

   - Fix an issue in the system suspend core support code causing wakeup
     events detection to fail in some cases (Rajat Jain).

   - Fix the generic power domains (genpd) framework to prevent the PM
     core from using the direct-complete optimization with it as that is
     guaranteed to fail (Ulf Hansson).

   - Fix a minor issue in the cpuidle core and clean it up a bit (Gaurav
     Jindal, Nicholas Piggin).

   - Fix and clean up the intel_idle and ARM cpuidle drivers (Jason
     Baron, Len Brown, Leo Yan).

   - Fix a couple of minor issues in the OPP framework and clean it up
     (Arvind Yadav, Fabio Estevam, Sudeep Holla, Tobias Jordan).

   - Fix and clean up some cpufreq drivers and fix a minor issue in the
     cpufreq statistics code (Arvind Yadav, Bhumika Goyal, Fabio
     Estevam, Gautham Shenoy, Gustavo Silva, Marek Szyprowski, Masahiro
     Yamada, Robert Jarzmik, Zumeng Chen).

   - Fix minor issues in the system suspend and hibernation core, in
     power management documentation and in the AVS (Adaptive Voltage
     Scaling) framework (Helge Deller, Himanshu Jha, Joe Perches, Rafael
     Wysocki).

   - Fix some issues in the cpupower utility and document that Shuah
     Khan is going to maintain it going forward (Prarit Bhargava, Shuah
     Khan)"

* tag 'pm-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (88 commits)
  tools/power/cpupower: add libcpupower.so.0.0.1 to .gitignore
  tools/power/cpupower: Add 64 bit library detection
  intel_idle: Graceful probe failure when MWAIT is disabled
  cpufreq: schedutil: Reset cached_raw_freq when not in sync with next_freq
  freezer: Fix typo in freezable_schedule_timeout() comment
  PM / s2idle: Clear the events_check_enabled flag
  cpufreq: stats: Handle the case when trans_table goes beyond PAGE_SIZE
  cpufreq: arm_big_little: make cpufreq_arm_bL_ops structures const
  cpufreq: arm_big_little: make function arguments and structure pointer const
  cpuidle: Avoid assignment in if () argument
  cpuidle: Clean up cpuidle_enable_device() error handling a bit
  ACPI / PM: Fix acpi_pm_notifier_lock vs flush_workqueue() deadlock
  PM / Domains: Fix genpd to deal with drivers returning 1 from ->prepare()
  cpuidle: ladder: Add per CPU PM QoS resume latency support
  PM / QoS: Fix device resume latency framework
  PM / domains: Rework governor code to be more consistent
  PM / Domains: Remove gpd_dev_ops.active_wakeup() callback
  soc: rockchip: power-domain: Use GENPD_FLAG_ACTIVE_WAKEUP
  soc: mediatek: Use GENPD_FLAG_ACTIVE_WAKEUP
  ARM: shmobile: pm-rmobile: Use GENPD_FLAG_ACTIVE_WAKEUP
  ...
This commit is contained in:
Linus Torvalds 2017-11-13 19:43:50 -08:00
commit bd2cd7d5a8
99 changed files with 1765 additions and 1070 deletions
Download patch file Download diff file Expand all files Collapse all files

14
kernel/power/Kconfig
View file

@ -259,20 +259,6 @@ config APM_EMULATION
anything, try disabling/enabling this option (or disabling/enabling
APM in your BIOS).
config PM_OPP
bool
select SRCU
---help---
SOCs have a standard set of tuples consisting of frequency and
voltage pairs that the device will support per voltage domain. This
is called Operating Performance Point or OPP. The actual definitions
of OPP varies over silicon within the same family of devices.
OPP layer organizes the data internally using device pointers
representing individual voltage domains and provides SOC
implementations a ready to use framework to manage OPPs.
For more information, read <file:Documentation/power/opp.txt>
config PM_CLK
def_bool y
depends on PM && HAVE_CLK

4
kernel/power/qos.c
View file

@ -701,8 +701,8 @@ static int __init pm_qos_power_init(void)
for (i = PM_QOS_CPU_DMA_LATENCY; i < PM_QOS_NUM_CLASSES; i++) {
ret = register_pm_qos_misc(pm_qos_array[i], d);
if (ret < 0) {
printk(KERN_ERR "pm_qos_param: %s setup failed\n",
pm_qos_array[i]->name);
pr_err("%s: %s setup failed\n",
__func__, pm_qos_array[i]->name);
return ret;
}
}

35
kernel/power/snapshot.c
View file

@ -10,6 +10,8 @@
*
*/
#define pr_fmt(fmt) "PM: " fmt
#include <linux/version.h>
#include <linux/module.h>
#include <linux/mm.h>
@ -967,7 +969,7 @@ void __init __register_nosave_region(unsigned long start_pfn,
region->end_pfn = end_pfn;
list_add_tail(&region->list, &nosave_regions);
Report:
printk(KERN_INFO "PM: Registered nosave memory: [mem %#010llx-%#010llx]\n",
pr_info("Registered nosave memory: [mem %#010llx-%#010llx]\n",
(unsigned long long) start_pfn << PAGE_SHIFT,
((unsigned long long) end_pfn << PAGE_SHIFT) - 1);
}
@ -1039,7 +1041,7 @@ static void mark_nosave_pages(struct memory_bitmap *bm)
list_for_each_entry(region, &nosave_regions, list) {
unsigned long pfn;
pr_debug("PM: Marking nosave pages: [mem %#010llx-%#010llx]\n",
pr_debug("Marking nosave pages: [mem %#010llx-%#010llx]\n",
(unsigned long long) region->start_pfn << PAGE_SHIFT,
((unsigned long long) region->end_pfn << PAGE_SHIFT)
- 1);
@ -1095,7 +1097,7 @@ int create_basic_memory_bitmaps(void)
free_pages_map = bm2;
mark_nosave_pages(forbidden_pages_map);
pr_debug("PM: Basic memory bitmaps created\n");
pr_debug("Basic memory bitmaps created\n");
return 0;
@ -1131,7 +1133,7 @@ void free_basic_memory_bitmaps(void)
memory_bm_free(bm2, PG_UNSAFE_CLEAR);
kfree(bm2);
pr_debug("PM: Basic memory bitmaps freed\n");
pr_debug("Basic memory bitmaps freed\n");
}
void clear_free_pages(void)
@ -1152,7 +1154,7 @@ void clear_free_pages(void)
pfn = memory_bm_next_pfn(bm);
}
memory_bm_position_reset(bm);
pr_info("PM: free pages cleared after restore\n");
pr_info("free pages cleared after restore\n");
#endif /* PAGE_POISONING_ZERO */
}
@ -1690,7 +1692,7 @@ int hibernate_preallocate_memory(void)
ktime_t start, stop;
int error;
printk(KERN_INFO "PM: Preallocating image memory... ");
pr_info("Preallocating image memory... ");
start = ktime_get();
error = memory_bm_create(&orig_bm, GFP_IMAGE, PG_ANY);
@ -1821,13 +1823,13 @@ int hibernate_preallocate_memory(void)
out:
stop = ktime_get();
printk(KERN_CONT "done (allocated %lu pages)\n", pages);
pr_cont("done (allocated %lu pages)\n", pages);
swsusp_show_speed(start, stop, pages, "Allocated");
return 0;
err_out:
printk(KERN_CONT "\n");
pr_cont("\n");
swsusp_free();
return -ENOMEM;
}
@ -1867,8 +1869,8 @@ static int enough_free_mem(unsigned int nr_pages, unsigned int nr_highmem)
free += zone_page_state(zone, NR_FREE_PAGES);
nr_pages += count_pages_for_highmem(nr_highmem);
pr_debug("PM: Normal pages needed: %u + %u, available pages: %u\n",
nr_pages, PAGES_FOR_IO, free);
pr_debug("Normal pages needed: %u + %u, available pages: %u\n",
nr_pages, PAGES_FOR_IO, free);
return free > nr_pages + PAGES_FOR_IO;
}
@ -1961,20 +1963,20 @@ asmlinkage __visible int swsusp_save(void)
{
unsigned int nr_pages, nr_highmem;
printk(KERN_INFO "PM: Creating hibernation image:\n");
pr_info("Creating hibernation image:\n");
drain_local_pages(NULL);
nr_pages = count_data_pages();
nr_highmem = count_highmem_pages();
printk(KERN_INFO "PM: Need to copy %u pages\n", nr_pages + nr_highmem);
pr_info("Need to copy %u pages\n", nr_pages + nr_highmem);
if (!enough_free_mem(nr_pages, nr_highmem)) {
printk(KERN_ERR "PM: Not enough free memory\n");
pr_err("Not enough free memory\n");
return -ENOMEM;
}
if (swsusp_alloc(&copy_bm, nr_pages, nr_highmem)) {
printk(KERN_ERR "PM: Memory allocation failed\n");
pr_err("Memory allocation failed\n");
return -ENOMEM;
}
@ -1995,8 +1997,7 @@ asmlinkage __visible int swsusp_save(void)
nr_copy_pages = nr_pages;
nr_meta_pages = DIV_ROUND_UP(nr_pages * sizeof(long), PAGE_SIZE);
printk(KERN_INFO "PM: Hibernation image created (%d pages copied)\n",
nr_pages);
pr_info("Hibernation image created (%d pages copied)\n", nr_pages);
return 0;
}
@ -2170,7 +2171,7 @@ static int check_header(struct swsusp_info *info)
if (!reason && info->num_physpages != get_num_physpages())
reason = "memory size";
if (reason) {
printk(KERN_ERR "PM: Image mismatch: %s\n", reason);
pr_err("Image mismatch: %s\n", reason);
return -EPERM;
}
return 0;

2
kernel/power/suspend.c
View file

@ -437,7 +437,6 @@ static int suspend_enter(suspend_state_t state, bool *wakeup)
error = suspend_ops->enter(state);
trace_suspend_resume(TPS("machine_suspend"),
state, false);
events_check_enabled = false;
} else if (*wakeup) {
error = -EBUSY;
}
@ -582,6 +581,7 @@ static int enter_state(suspend_state_t state)
pm_restore_gfp_mask();
Finish:
events_check_enabled = false;
pm_pr_dbg("Finishing wakeup.\n");
suspend_finish();
Unlock:

128
kernel/power/swap.c
View file

@ -12,6 +12,8 @@
*
*/
#define pr_fmt(fmt) "PM: " fmt
#include <linux/module.h>
#include <linux/file.h>
#include <linux/delay.h>
@ -241,9 +243,9 @@ static void hib_end_io(struct bio *bio)
struct page *page = bio->bi_io_vec[0].bv_page;
if (bio->bi_status) {
printk(KERN_ALERT "Read-error on swap-device (%u:%u:%Lu)\n",
MAJOR(bio_dev(bio)), MINOR(bio_dev(bio)),
(unsigned long long)bio->bi_iter.bi_sector);
pr_alert("Read-error on swap-device (%u:%u:%Lu)\n",
MAJOR(bio_dev(bio)), MINOR(bio_dev(bio)),
(unsigned long long)bio->bi_iter.bi_sector);
}
if (bio_data_dir(bio) == WRITE)
@ -273,8 +275,8 @@ static int hib_submit_io(int op, int op_flags, pgoff_t page_off, void *addr,
bio_set_op_attrs(bio, op, op_flags);
if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
printk(KERN_ERR "PM: Adding page to bio failed at %llu\n",
(unsigned long long)bio->bi_iter.bi_sector);
pr_err("Adding page to bio failed at %llu\n",
(unsigned long long)bio->bi_iter.bi_sector);
bio_put(bio);
return -EFAULT;
}
@ -319,7 +321,7 @@ static int mark_swapfiles(struct swap_map_handle *handle, unsigned int flags)
error = hib_submit_io(REQ_OP_WRITE, REQ_SYNC,
swsusp_resume_block, swsusp_header, NULL);
} else {
printk(KERN_ERR "PM: Swap header not found!\n");
pr_err("Swap header not found!\n");
error = -ENODEV;
}
return error;
@ -413,8 +415,7 @@ static int get_swap_writer(struct swap_map_handle *handle)
ret = swsusp_swap_check();
if (ret) {
if (ret != -ENOSPC)
printk(KERN_ERR "PM: Cannot find swap device, try "
"swapon -a.\n");
pr_err("Cannot find swap device, try swapon -a\n");
return ret;
}
handle->cur = (struct swap_map_page *)get_zeroed_page(GFP_KERNEL);
@ -491,9 +492,9 @@ static int swap_writer_finish(struct swap_map_handle *handle,
{
if (!error) {
flush_swap_writer(handle);
printk(KERN_INFO "PM: S");
pr_info("S");
error = mark_swapfiles(handle, flags);
printk("|\n");
pr_cont("|\n");
}
if (error)
@ -542,7 +543,7 @@ static int save_image(struct swap_map_handle *handle,
hib_init_batch(&hb);
printk(KERN_INFO "PM: Saving image data pages (%u pages)...\n",
pr_info("Saving image data pages (%u pages)...\n",
nr_to_write);
m = nr_to_write / 10;
if (!m)
@ -557,8 +558,8 @@ static int save_image(struct swap_map_handle *handle,
if (ret)
break;
if (!(nr_pages % m))
printk(KERN_INFO "PM: Image saving progress: %3d%%\n",
nr_pages / m * 10);
pr_info("Image saving progress: %3d%%\n",
nr_pages / m * 10);
nr_pages++;
}
err2 = hib_wait_io(&hb);
@ -566,7 +567,7 @@ static int save_image(struct swap_map_handle *handle,
if (!ret)
ret = err2;
if (!ret)
printk(KERN_INFO "PM: Image saving done.\n");
pr_info("Image saving done\n");
swsusp_show_speed(start, stop, nr_to_write, "Wrote");
return ret;
}
@ -692,14 +693,14 @@ static int save_image_lzo(struct swap_map_handle *handle,
page = (void *)__get_free_page(__GFP_RECLAIM | __GFP_HIGH);
if (!page) {
printk(KERN_ERR "PM: Failed to allocate LZO page\n");
pr_err("Failed to allocate LZO page\n");
ret = -ENOMEM;
goto out_clean;
}
data = vmalloc(sizeof(*data) * nr_threads);
if (!data) {
printk(KERN_ERR "PM: Failed to allocate LZO data\n");
pr_err("Failed to allocate LZO data\n");
ret = -ENOMEM;
goto out_clean;
}
@ -708,7 +709,7 @@ static int save_image_lzo(struct swap_map_handle *handle,
crc = kmalloc(sizeof(*crc), GFP_KERNEL);
if (!crc) {
printk(KERN_ERR "PM: Failed to allocate crc\n");
pr_err("Failed to allocate crc\n");
ret = -ENOMEM;
goto out_clean;
}
@ -726,8 +727,7 @@ static int save_image_lzo(struct swap_map_handle *handle,
"image_compress/%u", thr);
if (IS_ERR(data[thr].thr)) {
data[thr].thr = NULL;
printk(KERN_ERR
"PM: Cannot start compression threads\n");
pr_err("Cannot start compression threads\n");
ret = -ENOMEM;
goto out_clean;
}
@ -749,7 +749,7 @@ static int save_image_lzo(struct swap_map_handle *handle,
crc->thr = kthread_run(crc32_threadfn, crc, "image_crc32");
if (IS_ERR(crc->thr)) {
crc->thr = NULL;
printk(KERN_ERR "PM: Cannot start CRC32 thread\n");
pr_err("Cannot start CRC32 thread\n");
ret = -ENOMEM;
goto out_clean;
}
@ -760,10 +760,9 @@ static int save_image_lzo(struct swap_map_handle *handle,
*/
handle->reqd_free_pages = reqd_free_pages();
printk(KERN_INFO
"PM: Using %u thread(s) for compression.\n"
"PM: Compressing and saving image data (%u pages)...\n",
nr_threads, nr_to_write);
pr_info("Using %u thread(s) for compression\n", nr_threads);
pr_info("Compressing and saving image data (%u pages)...\n",
nr_to_write);
m = nr_to_write / 10;
if (!m)
m = 1;
@ -783,10 +782,8 @@ static int save_image_lzo(struct swap_map_handle *handle,
data_of(*snapshot), PAGE_SIZE);
if (!(nr_pages % m))
printk(KERN_INFO
"PM: Image saving progress: "
"%3d%%\n",
nr_pages / m * 10);
pr_info("Image saving progress: %3d%%\n",
nr_pages / m * 10);
nr_pages++;
}
if (!off)
@ -813,15 +810,14 @@ static int save_image_lzo(struct swap_map_handle *handle,
ret = data[thr].ret;
if (ret < 0) {
printk(KERN_ERR "PM: LZO compression failed\n");
pr_err("LZO compression failed\n");
goto out_finish;
}
if (unlikely(!data[thr].cmp_len ||
data[thr].cmp_len >
lzo1x_worst_compress(data[thr].unc_len))) {
printk(KERN_ERR
"PM: Invalid LZO compressed length\n");
pr_err("Invalid LZO compressed length\n");
ret = -1;
goto out_finish;
}
@ -857,7 +853,7 @@ out_finish:
if (!ret)
ret = err2;
if (!ret)
printk(KERN_INFO "PM: Image saving done.\n");
pr_info("Image saving done\n");
swsusp_show_speed(start, stop, nr_to_write, "Wrote");
out_clean:
if (crc) {
@ -888,7 +884,7 @@ static int enough_swap(unsigned int nr_pages, unsigned int flags)
unsigned int free_swap = count_swap_pages(root_swap, 1);
unsigned int required;
pr_debug("PM: Free swap pages: %u\n", free_swap);
pr_debug("Free swap pages: %u\n", free_swap);
required = PAGES_FOR_IO + nr_pages;
return free_swap > required;
@ -915,12 +911,12 @@ int swsusp_write(unsigned int flags)
pages = snapshot_get_image_size();
error = get_swap_writer(&handle);
if (error) {
printk(KERN_ERR "PM: Cannot get swap writer\n");
pr_err("Cannot get swap writer\n");
return error;
}
if (flags & SF_NOCOMPRESS_MODE) {
if (!enough_swap(pages, flags)) {
printk(KERN_ERR "PM: Not enough free swap\n");
pr_err("Not enough free swap\n");
error = -ENOSPC;
goto out_finish;
}
@ -1068,8 +1064,7 @@ static int load_image(struct swap_map_handle *handle,
hib_init_batch(&hb);
clean_pages_on_read = true;
printk(KERN_INFO "PM: Loading image data pages (%u pages)...\n",
nr_to_read);
pr_info("Loading image data pages (%u pages)...\n", nr_to_read);
m = nr_to_read / 10;
if (!m)
m = 1;
@ -1087,8 +1082,8 @@ static int load_image(struct swap_map_handle *handle,
if (ret)
break;
if (!(nr_pages % m))
printk(KERN_INFO "PM: Image loading progress: %3d%%\n",
nr_pages / m * 10);
pr_info("Image loading progress: %3d%%\n",
nr_pages / m * 10);
nr_pages++;
}
err2 = hib_wait_io(&hb);
@ -1096,7 +1091,7 @@ static int load_image(struct swap_map_handle *handle,
if (!ret)
ret = err2;
if (!ret) {
printk(KERN_INFO "PM: Image loading done.\n");
pr_info("Image loading done\n");
snapshot_write_finalize(snapshot);
if (!snapshot_image_loaded(snapshot))
ret = -ENODATA;
@ -1190,14 +1185,14 @@ static int load_image_lzo(struct swap_map_handle *handle,
page = vmalloc(sizeof(*page) * LZO_MAX_RD_PAGES);
if (!page) {
printk(KERN_ERR "PM: Failed to allocate LZO page\n");
pr_err("Failed to allocate LZO page\n");
ret = -ENOMEM;
goto out_clean;
}
data = vmalloc(sizeof(*data) * nr_threads);
if (!data) {
printk(KERN_ERR "PM: Failed to allocate LZO data\n");
pr_err("Failed to allocate LZO data\n");
ret = -ENOMEM;
goto out_clean;
}
@ -1206,7 +1201,7 @@ static int load_image_lzo(struct swap_map_handle *handle,
crc = kmalloc(sizeof(*crc), GFP_KERNEL);
if (!crc) {
printk(KERN_ERR "PM: Failed to allocate crc\n");
pr_err("Failed to allocate crc\n");
ret = -ENOMEM;
goto out_clean;
}
@ -1226,8 +1221,7 @@ static int load_image_lzo(struct swap_map_handle *handle,
"image_decompress/%u", thr);
if (IS_ERR(data[thr].thr)) {
data[thr].thr = NULL;
printk(KERN_ERR
"PM: Cannot start decompression threads\n");
pr_err("Cannot start decompression threads\n");
ret = -ENOMEM;
goto out_clean;
}
@ -1249,7 +1243,7 @@ static int load_image_lzo(struct swap_map_handle *handle,
crc->thr = kthread_run(crc32_threadfn, crc, "image_crc32");
if (IS_ERR(crc->thr)) {
crc->thr = NULL;
printk(KERN_ERR "PM: Cannot start CRC32 thread\n");
pr_err("Cannot start CRC32 thread\n");
ret = -ENOMEM;
goto out_clean;
}
@ -1274,8 +1268,7 @@ static int load_image_lzo(struct swap_map_handle *handle,
if (!page[i]) {
if (i < LZO_CMP_PAGES) {
ring_size = i;
printk(KERN_ERR
"PM: Failed to allocate LZO pages\n");
pr_err("Failed to allocate LZO pages\n");
ret = -ENOMEM;
goto out_clean;
} else {
@ -1285,10 +1278,9 @@ static int load_image_lzo(struct swap_map_handle *handle,
}
want = ring_size = i;
printk(KERN_INFO
"PM: Using %u thread(s) for decompression.\n"
"PM: Loading and decompressing image data (%u pages)...\n",
nr_threads, nr_to_read);
pr_info("Using %u thread(s) for decompression\n", nr_threads);
pr_info("Loading and decompressing image data (%u pages)...\n",
nr_to_read);
m = nr_to_read / 10;
if (!m)
m = 1;
@ -1348,8 +1340,7 @@ static int load_image_lzo(struct swap_map_handle *handle,
if (unlikely(!data[thr].cmp_len ||
data[thr].cmp_len >
lzo1x_worst_compress(LZO_UNC_SIZE))) {
printk(KERN_ERR
"PM: Invalid LZO compressed length\n");
pr_err("Invalid LZO compressed length\n");
ret = -1;
goto out_finish;
}
@ -1400,16 +1391,14 @@ static int load_image_lzo(struct swap_map_handle *handle,
ret = data[thr].ret;
if (ret < 0) {
printk(KERN_ERR
"PM: LZO decompression failed\n");
pr_err("LZO decompression failed\n");
goto out_finish;
}
if (unlikely(!data[thr].unc_len ||
data[thr].unc_len > LZO_UNC_SIZE ||
data[thr].unc_len & (PAGE_SIZE - 1))) {
printk(KERN_ERR
"PM: Invalid LZO uncompressed length\n");
pr_err("Invalid LZO uncompressed length\n");
ret = -1;
goto out_finish;
}
@ -1420,10 +1409,8 @@ static int load_image_lzo(struct swap_map_handle *handle,
data[thr].unc + off, PAGE_SIZE);
if (!(nr_pages % m))
printk(KERN_INFO
"PM: Image loading progress: "
"%3d%%\n",
nr_pages / m * 10);
pr_info("Image loading progress: %3d%%\n",
nr_pages / m * 10);
nr_pages++;
ret = snapshot_write_next(snapshot);
@ -1448,15 +1435,14 @@ out_finish:
}
stop = ktime_get();
if (!ret) {
printk(KERN_INFO "PM: Image loading done.\n");
pr_info("Image loading done\n");
snapshot_write_finalize(snapshot);
if (!snapshot_image_loaded(snapshot))
ret = -ENODATA;
if (!ret) {
if (swsusp_header->flags & SF_CRC32_MODE) {
if(handle->crc32 != swsusp_header->crc32) {
printk(KERN_ERR
"PM: Invalid image CRC32!\n");
pr_err("Invalid image CRC32!\n");
ret = -ENODATA;
}
}
@ -1513,9 +1499,9 @@ int swsusp_read(unsigned int *flags_p)
swap_reader_finish(&handle);
end:
if (!error)
pr_debug("PM: Image successfully loaded\n");
pr_debug("Image successfully loaded\n");
else
pr_debug("PM: Error %d resuming\n", error);
pr_debug("Error %d resuming\n", error);
return error;
}
@ -1552,13 +1538,13 @@ put:
if (error)
blkdev_put(hib_resume_bdev, FMODE_READ);
else
pr_debug("PM: Image signature found, resuming\n");
pr_debug("Image signature found, resuming\n");
} else {
error = PTR_ERR(hib_resume_bdev);
}
if (error)
pr_debug("PM: Image not found (code %d)\n", error);
pr_debug("Image not found (code %d)\n", error);
return error;
}
@ -1570,7 +1556,7 @@ put:
void swsusp_close(fmode_t mode)
{
if (IS_ERR(hib_resume_bdev)) {
pr_debug("PM: Image device not initialised\n");
pr_debug("Image device not initialised\n");
return;
}
@ -1594,7 +1580,7 @@ int swsusp_unmark(void)
swsusp_resume_block,
swsusp_header, NULL);
} else {
printk(KERN_ERR "PM: Cannot find swsusp signature!\n");
pr_err("Cannot find swsusp signature!\n");
error = -ENODEV;
}

6
kernel/sched/cpufreq_schedutil.c
View file

@ -282,8 +282,12 @@ static void sugov_update_single(struct update_util_data *hook, u64 time,
* Do not reduce the frequency if the CPU has not been idle
* recently, as the reduction is likely to be premature then.
*/
if (busy && next_f < sg_policy->next_freq)
if (busy && next_f < sg_policy->next_freq) {
next_f = sg_policy->next_freq;
/* Reset cached freq as next_freq has changed */
sg_policy->cached_raw_freq = 0;
}
}
sugov_update_commit(sg_policy, time, next_f);
}