[PATCH 6/6] power: Use pr_fmt and pr_<level>

From: Joe Perches
Date: Thu Jun 04 2015 - 14:37:47 EST

Use a more current logging style.

Some of these messages did not use prefixes so
use pr_fmt to prefix every message with "PM: "

In snapshot.c, one of the messages was a single
line emited with KERN_CONT. Use 2 lines so the
time to allocate memory can be more easily known
by printk/dmesg timestamps.

Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
---
kernel/power/hibernate.c | 61 ++++++++++-----------
kernel/power/main.c | 6 +-
kernel/power/process.c | 1 +
kernel/power/qos.c | 6 +-
kernel/power/snapshot.c | 38 ++++++-------
kernel/power/suspend.c | 29 +++++-----
kernel/power/suspend_test.c | 44 ++++++---------
kernel/power/swap.c | 131 ++++++++++++++++++++------------------------
kernel/power/user.c | 6 +-
9 files changed, 152 insertions(+), 170 deletions(-)

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index 2466d78..71f9904 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -10,6 +10,8 @@
* This file is released under the GPLv2.
*/

+#define pr_fmt(fmt) "PM: " fmt
+
#include <linux/export.h>
#include <linux/suspend.h>
#include <linux/syscalls.h>
@@ -103,7 +105,7 @@ EXPORT_SYMBOL(system_entering_hibernation);
#ifdef CONFIG_PM_DEBUG
static void hibernation_debug_sleep(void)
{
- printk(KERN_INFO "hibernation debug: Waiting for 5 seconds.\n");
+ pr_info("%s: Waiting for 5 seconds\n", __func__);
mdelay(5000);
}

@@ -249,10 +251,10 @@ void swsusp_show_speed(ktime_t start, ktime_t stop,
centisecs = 1; /* avoid div-by-zero */
k = nr_pages * (PAGE_SIZE / 1024);
kps = (k * 100) / centisecs;
- 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);
+ pr_info("%s %u kbytes in %u.%02u seconds (%u.%02u MB/s)\n",
+ msg, k,
+ centisecs / 100, centisecs % 100,
+ kps / 1000, (kps % 1000) / 10);
}

/**
@@ -270,8 +272,7 @@ static int create_image(int platform_mode)

error = dpm_suspend_end(PMSG_FREEZE);
if (error) {
- printk(KERN_ERR "PM: Some devices failed to power down, "
- "aborting hibernation\n");
+ pr_err("Some devices failed to power down, aborting hibernation\n");
return error;
}

@@ -287,8 +288,7 @@ static int create_image(int platform_mode)

error = syscore_suspend();
if (error) {
- printk(KERN_ERR "PM: Some system devices failed to power down, "
- "aborting hibernation\n");
+ pr_err("Some system devices failed to power down, aborting hibernation\n");
goto Enable_irqs;
}

@@ -301,8 +301,7 @@ static int create_image(int platform_mode)
error = swsusp_arch_suspend();
trace_suspend_resume(TPS("machine_suspend"), PM_EVENT_HIBERNATE, false);
if (error)
- printk(KERN_ERR "PM: Error %d creating hibernation image\n",
- error);
+ pr_err("Error %d creating hibernation image\n", error);
/* Restore control flow magically appears here */
restore_processor_state();
if (!in_suspend)
@@ -423,8 +422,7 @@ static int resume_target_kernel(bool platform_mode)

error = dpm_suspend_end(PMSG_QUIESCE);
if (error) {
- printk(KERN_ERR "PM: Some devices failed to power down, "
- "aborting resume\n");
+ pr_err("Some devices failed to power down, aborting resume\n");
return error;
}

@@ -624,8 +622,7 @@ static void power_down(void)
*/
error = swsusp_unmark();
if (error)
- printk(KERN_ERR "PM: Swap will be unusable! "
- "Try swapon -a.\n");
+ pr_err("Swap will be unusable! Try 'swapon -a'\n");
return;
#endif
}
@@ -634,7 +631,7 @@ static void power_down(void)
* Valid image is on the disk, if we continue we risk serious data
* corruption after resume.
*/
- printk(KERN_CRIT "PM: Please power down manually\n");
+ pr_crit("Please power down manually\n");
while (1)
cpu_relax();
}
@@ -647,7 +644,7 @@ int hibernate(void)
int error;

if (!hibernation_available()) {
- pr_debug("PM: Hibernation not available.\n");
+ pr_debug("Hibernation not available\n");
return -EPERM;
}

@@ -663,9 +660,9 @@ int hibernate(void)
if (error)
goto Exit;

- printk(KERN_INFO "PM: Syncing filesystems ...\n");
+ pr_info("Syncing filesystems...\n");
sys_sync();
- printk(KERN_INFO "PM: Syncing filesystems: done\n");
+ pr_info("Syncing filesystems: done\n");

error = freeze_processes();
if (error)
@@ -691,7 +688,7 @@ int hibernate(void)
else
flags |= SF_CRC32_MODE;

- pr_debug("PM: writing image.\n");
+ pr_debug("writing image\n");
error = swsusp_write(flags);
swsusp_free();
if (!error)
@@ -699,7 +696,7 @@ int hibernate(void)
in_suspend = 0;
pm_restore_gfp_mask();
} else {
- pr_debug("PM: Image restored successfully.\n");
+ pr_debug("Image restored successfully\n");
}

Free_bitmaps:
@@ -766,10 +763,10 @@ static int software_resume(void)
goto Unlock;
}

- pr_debug("PM: Checking hibernation image partition %s\n", resume_file);
+ pr_debug("Checking hibernation image partition %s\n", resume_file);

if (resume_delay) {
- printk(KERN_INFO "Waiting %dsec before reading resume device...\n",
+ pr_info("Waiting %dsec before reading resume device...\n",
resume_delay);
ssleep(resume_delay);
}
@@ -808,10 +805,10 @@ static int software_resume(void)
}

Check_image:
- pr_debug("PM: Hibernation image partition %d:%d present\n",
- MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device));
+ pr_debug("Hibernation image partition %d:%d present\n",
+ MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device));

- pr_debug("PM: Looking for hibernation image.\n");
+ pr_debug("Looking for hibernation image\n");
error = swsusp_check();
if (error)
goto Unlock;
@@ -828,12 +825,12 @@ static int software_resume(void)
if (error)
goto Close_Finish;

- pr_debug("PM: Preparing processes for restore.\n");
+ pr_debug("Preparing processes for restore\n");
error = freeze_processes();
if (error)
goto Close_Finish;

- pr_debug("PM: Loading hibernation image.\n");
+ pr_debug("Loading hibernation image\n");

lock_device_hotplug();
error = create_basic_memory_bitmaps();
@@ -845,7 +842,7 @@ static int software_resume(void)
if (!error)
hibernation_restore(flags & SF_PLATFORM_MODE);

- printk(KERN_ERR "PM: Failed to load hibernation image, recovering.\n");
+ pr_err("Failed to load hibernation image, recovering\n");
swsusp_free();
free_basic_memory_bitmaps();
Thaw:
@@ -858,7 +855,7 @@ static int software_resume(void)
/* For success case, the suspend path will release the lock */
Unlock:
mutex_unlock(&pm_mutex);
- pr_debug("PM: Hibernation image not present or could not be loaded.\n");
+ pr_debug("Hibernation image not present or could not be loaded\n");
return error;
Close_Finish:
swsusp_close(FMODE_READ);
@@ -979,7 +976,7 @@ static ssize_t disk_store(struct kobject *kobj, struct kobj_attribute *attr,
error = -EINVAL;

if (!error)
- pr_debug("PM: Hibernation mode set to '%s'\n",
+ pr_debug("Hibernation mode set to '%s'\n",
hibernation_modes[mode]);
unlock_system_sleep();
return error ? error : n;
@@ -1015,7 +1012,7 @@ static ssize_t resume_store(struct kobject *kobj, struct kobj_attribute *attr,
lock_system_sleep();
swsusp_resume_device = res;
unlock_system_sleep();
- printk(KERN_INFO "PM: Starting manual resume from disk\n");
+ pr_info("Starting manual resume from disk\n");
noresume = 0;
software_resume();
return n;
diff --git a/kernel/power/main.c b/kernel/power/main.c
index 63d395b..27d76b4 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -8,6 +8,8 @@
*
*/

+#define pr_fmt(fmt) "PM: " fmt
+
#include <linux/export.h>
#include <linux/kobject.h>
#include <linux/string.h>
@@ -531,8 +533,8 @@ pm_trace_store(struct kobject *kobj, struct kobj_attribute *attr,
if (sscanf(buf, "%d", &val) == 1) {
pm_trace_enabled = !!val;
if (pm_trace_enabled) {
- pr_warn("PM: Enabling pm_trace changes system date and time during resume.\n"
- "PM: Correct system time has to be restored manually after resume.\n");
+ pr_warn("Enabling pm_trace changes system date and time during resume\n");
+ pr_warn("Correct system time has to be restored manually after resume\n");
}
return n;
}
diff --git a/kernel/power/process.c b/kernel/power/process.c
index f072ae6..749d88c 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -5,6 +5,7 @@
* Originally from swsusp.
*/

+#define pr_fmt(fmt) "PM: " fmt

#undef DEBUG

diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index 97b0df71..531f5ef 100644
--- a/kernel/power/qos.c
+++ b/kernel/power/qos.c
@@ -29,6 +29,8 @@

/*#define DEBUG*/

+#define pr_fmt(fmt) "PM: " fmt
+
#include <linux/pm_qos.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
@@ -701,8 +703,8 @@ 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;
}
}
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 5235dd4..0fd7ad8 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -10,6 +10,8 @@
*
*/

+#define pr_fmt(fmt) "PM: " fmt
+
#include <linux/version.h>
#include <linux/module.h>
#include <linux/mm.h>
@@ -867,7 +869,7 @@ __register_nosave_region(unsigned long start_pfn, unsigned long end_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);
}
@@ -937,10 +939,9 @@ 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",
- (unsigned long long) region->start_pfn << PAGE_SHIFT,
- ((unsigned long long) region->end_pfn << PAGE_SHIFT)
- - 1);
+ 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);

for (pfn = region->start_pfn; pfn < region->end_pfn; pfn++)
if (pfn_valid(pfn)) {
@@ -993,7 +994,7 @@ 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;

@@ -1029,7 +1030,7 @@ 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");
}

/**
@@ -1564,7 +1565,7 @@ int hibernate_preallocate_memory(void)
ktime_t start, stop;
int error;

- printk(KERN_INFO "PM: Preallocating image memory... ");
+ pr_info("Preallocating image memory...\n");
start = ktime_get();

error = memory_bm_create(&orig_bm, GFP_IMAGE, PG_ANY);
@@ -1695,13 +1696,13 @@ int hibernate_preallocate_memory(void)

out:
stop = ktime_get();
- printk(KERN_CONT "done (allocated %lu pages)\n", pages);
+ pr_info("Preallocating image memory: done (allocated %lu pages)\n",
+ pages);
swsusp_show_speed(start, stop, pages, "Allocated");

return 0;

err_out:
- printk(KERN_CONT "\n");
swsusp_free();
return -ENOMEM;
}
@@ -1743,8 +1744,8 @@ 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;
}
@@ -1838,20 +1839,20 @@ 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(&orig_bm, &copy_bm, nr_pages, nr_highmem)) {
- printk(KERN_ERR "PM: Memory allocation failed\n");
+ pr_err("Memory allocation failed\n");
return -ENOMEM;
}

@@ -1871,8 +1872,7 @@ 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;
}
@@ -2056,7 +2056,7 @@ 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;
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index c3fec97..730506f 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -8,6 +8,8 @@
* This file is released under the GPLv2.
*/

+#define pr_fmt(fmt) "PM: " fmt
+
#include <linux/string.h>
#include <linux/delay.h>
#include <linux/errno.h>
@@ -68,11 +70,11 @@ static void freeze_enter(void)

/* Push all the CPUs into the idle loop. */
wake_up_all_idle_cpus();
- pr_debug("PM: suspend-to-idle\n");
+ pr_debug("suspend-to-idle\n");
/* Make the current CPU wait so it can enter the idle loop too. */
wait_event(suspend_freeze_wait_head,
suspend_freeze_state == FREEZE_STATE_WAKE);
- pr_debug("PM: resume from suspend-to-idle\n");
+ pr_debug("resume from suspend-to-idle\n");

cpuidle_pause();
put_online_cpus();
@@ -245,8 +247,8 @@ static int suspend_test(int level)
{
#ifdef CONFIG_PM_DEBUG
if (pm_test_level == level) {
- printk(KERN_INFO "suspend debug: Waiting for %d second(s).\n",
- pm_test_delay);
+ pr_info("suspend debug: Waiting for %d second(s)\n",
+ pm_test_delay);
mdelay(pm_test_delay * 1000);
return 1;
}
@@ -317,7 +319,7 @@ static int suspend_enter(suspend_state_t state, bool *wakeup)

error = dpm_suspend_late(PMSG_SUSPEND);
if (error) {
- printk(KERN_ERR "PM: late suspend of devices failed\n");
+ pr_err("late suspend of devices failed\n");
goto Platform_finish;
}
error = platform_suspend_prepare_late(state);
@@ -326,7 +328,7 @@ static int suspend_enter(suspend_state_t state, bool *wakeup)

error = dpm_suspend_noirq(PMSG_SUSPEND);
if (error) {
- printk(KERN_ERR "PM: noirq suspend of devices failed\n");
+ pr_err("noirq suspend of devices failed\n");
goto Platform_early_resume;
}
error = platform_suspend_prepare_noirq(state);
@@ -413,7 +415,7 @@ int suspend_devices_and_enter(suspend_state_t state)
suspend_test_start();
error = dpm_suspend_start(PMSG_SUSPEND);
if (error) {
- pr_err("PM: Some devices failed to suspend, or early wake event detected\n");
+ pr_err("Some devices failed to suspend, or early wake event detected\n");
goto Recover_platform;
}
suspend_test_finish("suspend devices");
@@ -470,8 +472,7 @@ static int enter_state(suspend_state_t state)
if (state == PM_SUSPEND_FREEZE) {
#ifdef CONFIG_PM_DEBUG
if (pm_test_level != TEST_NONE && pm_test_level <= TEST_CPUS) {
- pr_warning("PM: Unsupported test mode for suspend to idle,"
- "please choose none/freezer/devices/platform.\n");
+ pr_warn("Unsupported test mode for suspend to idle, please choose none/freezer/devices/platform\n");
return -EAGAIN;
}
#endif
@@ -485,12 +486,12 @@ static int enter_state(suspend_state_t state)
freeze_begin();

trace_suspend_resume(TPS("sync_filesystems"), 0, true);
- printk(KERN_INFO "PM: Syncing filesystems...\n");
+ pr_info("Syncing filesystems...\n");
sys_sync();
- printk(KERN_INFO "PM: Syncing filesystems: done\n");
+ pr_info("Syncing filesystems: done\n");
trace_suspend_resume(TPS("sync_filesystems"), 0, false);

- pr_debug("PM: Preparing system for sleep (%s)\n", pm_states[state]);
+ pr_debug("Preparing system for sleep (%s)\n", pm_states[state]);
error = suspend_prepare(state);
if (error)
goto Unlock;
@@ -499,13 +500,13 @@ static int enter_state(suspend_state_t state)
goto Finish;

trace_suspend_resume(TPS("suspend_enter"), state, false);
- pr_debug("PM: Suspending system (%s)\n", pm_states[state]);
+ pr_debug("Suspending system (%s)\n", pm_states[state]);
pm_restrict_gfp_mask();
error = suspend_devices_and_enter(state);
pm_restore_gfp_mask();

Finish:
- pr_debug("PM: Finishing wakeup.\n");
+ pr_debug("Finishing wakeup\n");
suspend_finish();
Unlock:
mutex_unlock(&pm_mutex);
diff --git a/kernel/power/suspend_test.c b/kernel/power/suspend_test.c
index 084452e..a59a68d 100644
--- a/kernel/power/suspend_test.c
+++ b/kernel/power/suspend_test.c
@@ -6,6 +6,8 @@
* This file is released under the GPLv2.
*/

+#define pr_fmt(fmt) "PM: " fmt
+
#include <linux/init.h>
#include <linux/rtc.h>

@@ -40,8 +42,8 @@ void suspend_test_finish(const char *label)
unsigned msec;

msec = jiffies_to_msecs(abs(nj));
- pr_info("PM: %s took %d.%03d seconds\n", label,
- msec / 1000, msec % 1000);
+ pr_info("%s took %d.%03d seconds\n",
+ label, msec / 1000, msec % 1000);

/* Warning on suspend means the RTC alarm period needs to be
* larger -- the system was sooo slooowwww to suspend that the
@@ -62,15 +64,6 @@ void suspend_test_finish(const char *label)

static void __init test_wakealarm(struct rtc_device *rtc, suspend_state_t state)
{
- static char err_readtime[] __initdata =
- KERN_ERR "PM: can't read %s time, err %d\n";
- static char err_wakealarm [] __initdata =
- KERN_ERR "PM: can't set %s wakealarm, err %d\n";
- static char err_suspend[] __initdata =
- KERN_ERR "PM: suspend test failed, error %d\n";
- static char info_test[] __initdata =
- KERN_INFO "PM: test RTC wakeup from '%s' suspend\n";
-
unsigned long now;
struct rtc_wkalrm alm;
int status;
@@ -79,7 +72,8 @@ static void __init test_wakealarm(struct rtc_device *rtc, suspend_state_t state)
repeat:
status = rtc_read_time(rtc, &alm.time);
if (status < 0) {
- printk(err_readtime, dev_name(&rtc->dev), status);
+ pr_err("can't read %s time, err %d\n",
+ dev_name(&rtc->dev), status);
return;
}
rtc_tm_to_time(&alm.time, &now);
@@ -90,29 +84,33 @@ repeat:

status = rtc_set_alarm(rtc, &alm);
if (status < 0) {
- printk(err_wakealarm, dev_name(&rtc->dev), status);
+ pr_err("can't set %s wakealarm, err %d\n",
+ dev_name(&rtc->dev), status);
return;
}

if (state == PM_SUSPEND_MEM) {
- printk(info_test, pm_states[state]);
+ pr_info("test RTC wakeup from '%s' suspend\n",
+ pm_states[state]);
status = pm_suspend(state);
if (status == -ENODEV)
state = PM_SUSPEND_STANDBY;
}
if (state == PM_SUSPEND_STANDBY) {
- printk(info_test, pm_states[state]);
+ pr_info("test RTC wakeup from '%s' suspend\n",
+ pm_states[state]);
status = pm_suspend(state);
if (status < 0)
state = PM_SUSPEND_FREEZE;
}
if (state == PM_SUSPEND_FREEZE) {
- printk(info_test, pm_states[state]);
+ pr_info("test RTC wakeup from '%s' suspend\n",
+ pm_states[state]);
status = pm_suspend(state);
}

if (status < 0)
- printk(err_suspend, status);
+ pr_err("suspend test failed, error %d\n", status);

test_repeat_count_current++;
if (test_repeat_count_current < test_repeat_count_max)
@@ -145,9 +143,6 @@ static int __init has_wakealarm(struct device *dev, const void *data)
*/
static const char *test_state_label __initdata;

-static char warn_bad_state[] __initdata =
- KERN_WARNING "PM: can't test '%s' suspend state\n";
-
static int __init setup_test_suspend(char *value)
{
int i;
@@ -172,16 +167,13 @@ static int __init setup_test_suspend(char *value)
return 0;
}

- printk(warn_bad_state, suspend_type);
+ pr_warn("can't test '%s' suspend state\n", suspend_type);
return 0;
}
__setup("test_suspend", setup_test_suspend);

static int __init test_suspend(void)
{
- static char warn_no_rtc[] __initdata =
- KERN_WARNING "PM: no wakealarm-capable RTC driver is ready\n";
-
struct rtc_device *rtc = NULL;
struct device *dev;
suspend_state_t test_state;
@@ -197,7 +189,7 @@ static int __init test_suspend(void)
break;
}
if (test_state == PM_SUSPEND_MAX) {
- printk(warn_bad_state, test_state_label);
+ pr_warn("can't test '%s' suspend state\n", test_state_label);
return 0;
}

@@ -206,7 +198,7 @@ static int __init test_suspend(void)
if (dev)
rtc = rtc_class_open(dev_name(dev));
if (!rtc) {
- printk(warn_no_rtc);
+ pr_warn("no wakealarm-capable RTC driver is ready\n");
return 0;
}

diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 7aa2635..d63dc6f 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -12,6 +12,8 @@
*
*/

+#define pr_fmt(fmt) "PM: " fmt
+
#include <linux/module.h>
#include <linux/file.h>
#include <linux/delay.h>
@@ -234,10 +236,10 @@ static void hib_end_io(struct bio *bio, int error)
struct page *page = bio->bi_io_vec[0].bv_page;

if (!uptodate || error) {
- printk(KERN_ALERT "Read-error on swap-device (%u:%u:%Lu)\n",
- imajor(bio->bi_bdev->bd_inode),
- iminor(bio->bi_bdev->bd_inode),
- (unsigned long long)bio->bi_iter.bi_sector);
+ pr_alert("Read-error on swap-device (%u:%u:%llu)\n",
+ imajor(bio->bi_bdev->bd_inode),
+ iminor(bio->bi_bdev->bd_inode),
+ (unsigned long long)bio->bi_iter.bi_sector);

if (!error)
error = -EIO;
@@ -266,8 +268,8 @@ static int hib_submit_io(int rw, pgoff_t page_off, void *addr,
bio->bi_bdev = hib_resume_bdev;

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;
}
@@ -311,7 +313,7 @@ static int mark_swapfiles(struct swap_map_handle *handle, unsigned int flags)
error = hib_submit_io(WRITE_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;
@@ -399,8 +401,7 @@ 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);
@@ -477,9 +478,9 @@ 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)
@@ -528,8 +529,7 @@ static int save_image(struct swap_map_handle *handle,

hib_init_batch(&hb);

- printk(KERN_INFO "PM: Saving image data pages (%u pages)...\n",
- nr_to_write);
+ pr_info("Saving image data pages (%u pages)...\n", nr_to_write);
m = nr_to_write / 10;
if (!m)
m = 1;
@@ -543,8 +543,8 @@ 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);
@@ -552,7 +552,7 @@ 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;
}
@@ -678,14 +678,14 @@ static int save_image_lzo(struct swap_map_handle *handle,

page = (void *)__get_free_page(__GFP_WAIT | __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;
}
@@ -694,7 +694,7 @@ 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;
}
@@ -712,8 +712,7 @@ 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;
}
@@ -735,7 +734,7 @@ 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;
}
@@ -746,10 +745,9 @@ 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;
@@ -769,10 +767,8 @@ 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)
@@ -799,15 +795,14 @@ 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;
}
@@ -843,7 +838,7 @@ 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) {
@@ -874,7 +869,7 @@ 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;
@@ -901,12 +896,12 @@ 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;
}
@@ -1053,8 +1048,7 @@ static int load_image(struct swap_map_handle *handle,

hib_init_batch(&hb);

- 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;
@@ -1072,8 +1066,8 @@ 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);
@@ -1081,7 +1075,7 @@ 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;
@@ -1171,14 +1165,14 @@ 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;
}
@@ -1187,7 +1181,7 @@ 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;
}
@@ -1205,8 +1199,7 @@ 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;
}
@@ -1228,7 +1221,7 @@ 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;
}
@@ -1253,8 +1246,7 @@ 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 {
@@ -1264,10 +1256,9 @@ 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;
@@ -1327,8 +1318,7 @@ 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;
}
@@ -1379,16 +1369,14 @@ 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;
}
@@ -1399,10 +1387,8 @@ 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);
@@ -1427,15 +1413,14 @@ 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;
}
}
@@ -1492,9 +1477,9 @@ 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;
}

@@ -1529,13 +1514,13 @@ 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;
}
@@ -1547,7 +1532,7 @@ 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;
}

@@ -1569,7 +1554,7 @@ int swsusp_unmark(void)
error = hib_submit_io(WRITE_SYNC, 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;
}

diff --git a/kernel/power/user.c b/kernel/power/user.c
index e22f6ad..07dba67 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -9,6 +9,8 @@
*
*/

+#define pr_fmt(fmt) "PM: " fmt
+
#include <linux/suspend.h>
#include <linux/syscalls.h>
#include <linux/reboot.h>
@@ -221,9 +223,9 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd,
if (data->frozen)
break;

- printk("Syncing filesystems ...\n");
+ pr_info("Syncing filesystems...\n");
sys_sync();
- printk("Syncing filesystems: done\n");
+ pr_info("Syncing filesystems: done\n");

error = freeze_processes();
if (error)
--
2.1.2

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