Hibernation: Update messages

Make hibernation messages start with one common prefix "PM: " and use
the word "hibernation" in the messages as a synonym of "suspend to
disk".

Turn some KERN_INFO messages into debug ones.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Len Brown <len.brown@intel.com>

4 files changed, 47 insertions, 40 deletions

diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index 3e24a200f1d4..64e42ab8b57c 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -191,8 +191,8 @@ int create_image(int platform_mode)
          */
         error = device_power_down(PMSG_FREEZE);
         if (error) {
-                printk(KERN_ERR "Some devices failed to power down, "
-                        KERN_ERR "aborting suspend\n");
+                printk(KERN_ERR "PM: Some devices failed to power down, "
+                        "aborting hibernation\n");
                 goto Enable_irqs;
         }
 
@@ -203,7 +203,8 @@ int create_image(int platform_mode)
         save_processor_state();
         error = swsusp_arch_suspend();
         if (error)
-                printk(KERN_ERR "Error %d while creating the image\n", error);
+                printk(KERN_ERR "PM: Error %d creating hibernation image\n",
+                        error);
         /* Restore control flow magically appears here */
         restore_processor_state();
         if (!in_suspend)
@@ -289,7 +290,7 @@ static int resume_target_kernel(void)
         local_irq_disable();
         error = device_power_down(PMSG_PRETHAW);
         if (error) {
-                printk(KERN_ERR "Some devices failed to power down, "
+                printk(KERN_ERR "PM: Some devices failed to power down, "
                         "aborting resume\n");
                 goto Enable_irqs;
         }
@@ -438,7 +439,7 @@ static void power_down(void)
          * Valid image is on the disk, if we continue we risk serious data
          * corruption after resume.
          */
-        printk(KERN_CRIT "Please power me down manually\n");
+        printk(KERN_CRIT "PM: Please power down manually\n");
         while(1);
 }
 
@@ -484,7 +485,7 @@ int hibernate(void)
         if (error)
                 goto Exit;
 
-        printk("Syncing filesystems ... ");
+        printk(KERN_INFO "PM: Syncing filesystems ... ");
         sys_sync();
         printk("done.\n");
 
@@ -560,10 +561,11 @@ static int software_resume(void)
                         return -ENOENT;
                 }
                 swsusp_resume_device = name_to_dev_t(resume_file);
-                pr_debug("swsusp: Resume From Partition %s\n", resume_file);
+                pr_debug("PM: Resume from partition %s\n", resume_file);
         } else {
-                pr_debug("swsusp: Resume From Partition %d:%d\n",
-                         MAJOR(swsusp_resume_device), MINOR(swsusp_resume_device));
+                pr_debug("PM: Resume from partition %d:%d\n",
+                                MAJOR(swsusp_resume_device),
+                                MINOR(swsusp_resume_device));
         }
 
         if (noresume) {
@@ -575,7 +577,7 @@ static int software_resume(void)
                 return 0;
         }
 
-        pr_debug("PM: Checking swsusp image.\n");
+        pr_debug("PM: Checking hibernation image.\n");
         error = swsusp_check();
         if (error)
                 goto Unlock;
@@ -601,7 +603,7 @@ static int software_resume(void)
                 goto Done;
         }
 
-        pr_debug("PM: Reading swsusp image.\n");
+        pr_debug("PM: Reading hibernation image.\n");
 
         error = swsusp_read(&flags);
         if (!error)
@@ -728,7 +730,7 @@ static ssize_t disk_store(struct kobject *kobj, struct kobj_attribute *attr,
                 error = -EINVAL;
 
         if (!error)
-                pr_debug("PM: suspend-to-disk mode set to '%s'\n",
+                pr_debug("PM: Hibernation mode set to '%s'\n",
                          hibernation_modes[mode]);
         mutex_unlock(&pm_mutex);
         return error ? error : n;
@@ -760,7 +762,7 @@ static ssize_t resume_store(struct kobject *kobj, struct kobj_attribute *attr,
         mutex_lock(&pm_mutex);
         swsusp_resume_device = res;
         mutex_unlock(&pm_mutex);
-        printk("Attempting manual resume\n");
+        printk(KERN_INFO "PM: Starting manual resume from disk\n");
         noresume = 0;
         software_resume();
         ret = n;
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 1ec3eccb1a34..f6a5df934f8d 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -635,7 +635,7 @@ __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("swsusp: Registered nosave memory region: %016lx - %016lx\n",
+        printk(KERN_INFO "PM: Registered nosave memory: %016lx - %016lx\n",
                 start_pfn << PAGE_SHIFT, end_pfn << PAGE_SHIFT);
 }
 
@@ -704,7 +704,7 @@ static void mark_nosave_pages(struct memory_bitmap *bm)
         list_for_each_entry(region, &nosave_regions, list) {
                 unsigned long pfn;
 
-                printk("swsusp: Marking nosave pages: %016lx - %016lx\n",
+                pr_debug("PM: Marking nosave pages: %016lx - %016lx\n",
                                 region->start_pfn << PAGE_SHIFT,
                                 region->end_pfn << PAGE_SHIFT);
 
@@ -749,7 +749,7 @@ int create_basic_memory_bitmaps(void)
         free_pages_map = bm2;
         mark_nosave_pages(forbidden_pages_map);
 
-        printk("swsusp: Basic memory bitmaps created\n");
+        pr_debug("PM: Basic memory bitmaps created\n");
 
         return 0;
 
@@ -784,7 +784,7 @@ void free_basic_memory_bitmaps(void)
         memory_bm_free(bm2, PG_UNSAFE_CLEAR);
         kfree(bm2);
 
-        printk("swsusp: Basic memory bitmaps freed\n");
+        pr_debug("PM: Basic memory bitmaps freed\n");
 }
 
 /**
@@ -1088,7 +1088,7 @@ static int enough_free_mem(unsigned int nr_pages, unsigned int nr_highmem)
         }
 
         nr_pages += count_pages_for_highmem(nr_highmem);
-        pr_debug("swsusp: Normal pages needed: %u + %u + %u, available pages: %u\n",
+        pr_debug("PM: Normal pages needed: %u + %u + %u, available pages: %u\n",
                 nr_pages, PAGES_FOR_IO, meta, free);
 
         return free > nr_pages + PAGES_FOR_IO + meta;
@@ -1201,20 +1201,20 @@ asmlinkage int swsusp_save(void)
 {
         unsigned int nr_pages, nr_highmem;
 
-        printk("swsusp: critical section: \n");
+        printk(KERN_INFO "PM: Creating hibernation image: \n");
 
         drain_local_pages();
         nr_pages = count_data_pages();
         nr_highmem = count_highmem_pages();
-        printk("swsusp: Need to copy %u pages\n", nr_pages + nr_highmem);
+        printk(KERN_INFO "PM: Need to copy %u pages\n", nr_pages + nr_highmem);
 
         if (!enough_free_mem(nr_pages, nr_highmem)) {
-                printk(KERN_ERR "swsusp: Not enough free memory\n");
+                printk(KERN_ERR "PM: Not enough free memory\n");
                 return -ENOMEM;
         }
 
         if (swsusp_alloc(&orig_bm, &copy_bm, nr_pages, nr_highmem)) {
-                printk(KERN_ERR "swsusp: Memory allocation failed\n");
+                printk(KERN_ERR "PM: Memory allocation failed\n");
                 return -ENOMEM;
         }
 
@@ -1234,7 +1234,8 @@ asmlinkage int swsusp_save(void)
         nr_copy_pages = nr_pages;
         nr_meta_pages = DIV_ROUND_UP(nr_pages * sizeof(long), PAGE_SIZE);
 
-        printk("swsusp: critical section: done (%d pages copied)\n", nr_pages);
+        printk(KERN_INFO "PM: Hibernation image created (%d pages copied)\n",
+                nr_pages);
 
         return 0;
 }
@@ -1433,7 +1434,7 @@ static int check_header(struct swsusp_info *info)
         if (!reason && info->num_physpages != num_physpages)
                 reason = "memory size";
         if (reason) {
-                printk(KERN_ERR "swsusp: Resume mismatch: %s\n", reason);
+                printk(KERN_ERR "PM: Image mismatch: %s\n", reason);
                 return -EPERM;
         }
         return 0;
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index ef41440879ba..a0abf9a463f9 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -71,7 +71,8 @@ static int submit(int rw, pgoff_t page_off, struct page *page,
         bio->bi_end_io = end_swap_bio_read;
 
         if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
-                printk("swsusp: ERROR: adding page to bio at %ld\n", page_off);
+                printk(KERN_ERR "PM: Adding page to bio failed at %ld\n",
+                        page_off);
                 bio_put(bio);
                 return -EFAULT;
         }
@@ -151,7 +152,7 @@ static int mark_swapfiles(sector_t start, unsigned int flags)
                 error = bio_write_page(swsusp_resume_block,
                                         swsusp_header, NULL);
         } else {
-                printk(KERN_ERR "swsusp: Swap header not found!\n");
+                printk(KERN_ERR "PM: Swap header not found!\n");
                 error = -ENODEV;
         }
         return error;
@@ -323,7 +324,8 @@ static int save_image(struct swap_map_handle *handle,
         struct timeval start;
         struct timeval stop;
 
-        printk("Saving image data pages (%u pages) ...     ", nr_to_write);
+        printk(KERN_INFO "PM: Saving image data pages (%u pages) ...     ",
+                nr_to_write);
         m = nr_to_write / 100;
         if (!m)
                 m = 1;
@@ -363,7 +365,7 @@ static int enough_swap(unsigned int nr_pages)
 {
         unsigned int free_swap = count_swap_pages(root_swap, 1);
 
-        pr_debug("swsusp: free swap pages: %u\n", free_swap);
+        pr_debug("PM: Free swap pages: %u\n", free_swap);
         return free_swap > nr_pages + PAGES_FOR_IO;
 }
 
@@ -386,7 +388,7 @@ int swsusp_write(unsigned int flags)
 
         error = swsusp_swap_check();
         if (error) {
-                printk(KERN_ERR "swsusp: Cannot find swap device, try "
+                printk(KERN_ERR "PM: Cannot find swap device, try "
                                 "swapon -a.\n");
                 return error;
         }
@@ -400,7 +402,7 @@ int swsusp_write(unsigned int flags)
         }
         header = (struct swsusp_info *)data_of(snapshot);
         if (!enough_swap(header->pages)) {
-                printk(KERN_ERR "swsusp: Not enough free swap\n");
+                printk(KERN_ERR "PM: Not enough free swap\n");
                 error = -ENOSPC;
                 goto out;
         }
@@ -415,7 +417,7 @@ int swsusp_write(unsigned int flags)
 
                 if (!error) {
                         flush_swap_writer(&handle);
-                        printk("S");
+                        printk(KERN_INFO "PM: S");
                         error = mark_swapfiles(start, flags);
                         printk("|\n");
                 }
@@ -505,7 +507,8 @@ static int load_image(struct swap_map_handle *handle,
         int err2;
         unsigned nr_pages;
 
-        printk("Loading image data pages (%u pages) ...     ", nr_to_read);
+        printk(KERN_INFO "PM: Loading image data pages (%u pages) ...     ",
+                nr_to_read);
         m = nr_to_read / 100;
         if (!m)
                 m = 1;
@@ -556,7 +559,7 @@ int swsusp_read(unsigned int *flags_p)
 
         *flags_p = swsusp_header->flags;
         if (IS_ERR(resume_bdev)) {
-                pr_debug("swsusp: block device not initialised\n");
+                pr_debug("PM: Image device not initialised\n");
                 return PTR_ERR(resume_bdev);
         }
 
@@ -575,9 +578,9 @@ int swsusp_read(unsigned int *flags_p)
         blkdev_put(resume_bdev);
 
         if (!error)
-                pr_debug("swsusp: Reading resume file was successful\n");
+                pr_debug("PM: Image successfully loaded\n");
         else
-                pr_debug("swsusp: Error %d resuming\n", error);
+                pr_debug("PM: Error %d resuming\n", error);
         return error;
 }
 
@@ -609,13 +612,13 @@ int swsusp_check(void)
                 if (error)
                         blkdev_put(resume_bdev);
                 else
-                        pr_debug("swsusp: Signature found, resuming\n");
+                        pr_debug("PM: Signature found, resuming\n");
         } else {
                 error = PTR_ERR(resume_bdev);
         }
 
         if (error)
-                pr_debug("swsusp: Error %d check for resume file\n", error);
+                pr_debug("PM: Error %d checking image file\n", error);
 
         return error;
 }
@@ -627,7 +630,7 @@ int swsusp_check(void)
 void swsusp_close(void)
 {
         if (IS_ERR(resume_bdev)) {
-                pr_debug("swsusp: block device not initialised\n");
+                pr_debug("PM: Image device not initialised\n");
                 return;
         }
 
diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index dc29a20aff41..023ff2a31d89 100644
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -188,7 +188,8 @@ void swsusp_show_speed(struct timeval *start, struct timeval *stop,
                 centisecs = 1;  /* avoid div-by-zero */
         k = nr_pages * (PAGE_SIZE / 1024);
         kps = (k * 100) / centisecs;
-        printk("%s %d kbytes in %d.%02d seconds (%d.%02d MB/s)\n", msg, k,
+        printk(KERN_INFO "PM: %s %d kbytes in %d.%02d seconds (%d.%02d MB/s)\n",
+                        msg, k,
                         centisecs / 100, centisecs % 100,
                         kps / 1000, (kps % 1000) / 10);
 }
@@ -219,7 +220,7 @@ int swsusp_shrink_memory(void)
         char *p = "-\\|/";
         struct timeval start, stop;
 
-        printk("Shrinking memory...  ");
+        printk(KERN_INFO "PM: Shrinking memory...  ");
         do_gettimeofday(&start);
         do {
                 long size, highmem_size;