Commit fb46e735 authored by Andi Kleen's avatar Andi Kleen
Browse files

HWPOISON: Convert pr_debugs to pr_info 



Convert a lot of pr_debugs in memory-failure.c that are generally useful
to pr_info. It's reasonable to print at least one message why
offlining succeeded or failed by default.

Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
parent 1c80b990

mm/memory-failure.c

+12 −12
Original line number Diff line number Diff line
@@ -314,7 +314,7 @@ static void add_to_kill(struct task_struct *tsk, struct page *p, 
	 * a SIGKILL because the error is not contained anymore.

	 */

	if (tk->addr == -EFAULT) {

		pr_debug("MCE: Unable to find user space address %lx in %s\n",

		pr_info("MCE: Unable to find user space address %lx in %s\n",

			page_to_pfn(p), tsk->comm);

		tk->addr_valid = 0;

	}
@@ -582,7 +582,7 @@ static int me_pagecache_clean(struct page *p, unsigned long pfn) 
					pfn, err);

		} else if (page_has_private(p) &&

				!try_to_release_page(p, GFP_NOIO)) {

			pr_debug("MCE %#lx: failed to release buffers\n", pfn);

			pr_info("MCE %#lx: failed to release buffers\n", pfn);

		} else {

			ret = RECOVERED;

		}
@@ -1152,7 +1152,7 @@ int unpoison_memory(unsigned long pfn) 
	page = compound_head(p);



	if (!PageHWPoison(p)) {

		pr_debug("MCE: Page was already unpoisoned %#lx\n", pfn);

		pr_info("MCE: Page was already unpoisoned %#lx\n", pfn);

		return 0;

	}
@@ -1161,7 +1161,7 @@ int unpoison_memory(unsigned long pfn) 
	if (!get_page_unless_zero(page)) {

		if (TestClearPageHWPoison(p))

			atomic_long_sub(nr_pages, &mce_bad_pages);

		pr_debug("MCE: Software-unpoisoned free page %#lx\n", pfn);

		pr_info("MCE: Software-unpoisoned free page %#lx\n", pfn);

		return 0;

	}
@@ -1173,7 +1173,7 @@ int unpoison_memory(unsigned long pfn) 
	 * the free buddy page pool.

	 */

	if (TestClearPageHWPoison(page)) {

		pr_debug("MCE: Software-unpoisoned page %#lx\n", pfn);

		pr_info("MCE: Software-unpoisoned page %#lx\n", pfn);

		atomic_long_sub(nr_pages, &mce_bad_pages);

		freeit = 1;

	}
@@ -1222,12 +1222,12 @@ static int get_any_page(struct page *p, unsigned long pfn, int flags) 
	set_migratetype_isolate(p);

	if (!get_page_unless_zero(compound_head(p))) {

		if (is_free_buddy_page(p)) {

			pr_debug("get_any_page: %#lx free buddy page\n", pfn);

			pr_info("get_any_page: %#lx free buddy page\n", pfn);

			/* Set hwpoison bit while page is still isolated */

			SetPageHWPoison(p);

			ret = 0;

		} else {

			pr_debug("get_any_page: %#lx: unknown zero refcount page type %lx\n",

			pr_info("get_any_page: %#lx: unknown zero refcount page type %lx\n",

				pfn, p->flags);

			ret = -EIO;

		}
@@ -1293,7 +1293,7 @@ int soft_offline_page(struct page *page, int flags) 
			goto done;

	}

	if (!PageLRU(page)) {

		pr_debug("soft_offline: %#lx: unknown non LRU page type %lx\n",

		pr_info("soft_offline: %#lx: unknown non LRU page type %lx\n",

				pfn, page->flags);

		return -EIO;

	}
@@ -1307,7 +1307,7 @@ int soft_offline_page(struct page *page, int flags) 
	if (PageHWPoison(page)) {

		unlock_page(page);

		put_page(page);

		pr_debug("soft offline: %#lx page already poisoned\n", pfn);

		pr_info("soft offline: %#lx page already poisoned\n", pfn);

		return -EBUSY;

	}
@@ -1328,7 +1328,7 @@ int soft_offline_page(struct page *page, int flags) 
	put_page(page);

	if (ret == 1) {

		ret = 0;

		pr_debug("soft_offline: %#lx: invalidated\n", pfn);

		pr_info("soft_offline: %#lx: invalidated\n", pfn);

		goto done;

	}
@@ -1344,13 +1344,13 @@ int soft_offline_page(struct page *page, int flags) 
		list_add(&page->lru, &pagelist);

		ret = migrate_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL, 0);

		if (ret) {

			pr_debug("soft offline: %#lx: migration failed %d, type %lx\n",

			pr_info("soft offline: %#lx: migration failed %d, type %lx\n",

				pfn, ret, page->flags);

			if (ret > 0)

				ret = -EIO;

		}

	} else {

		pr_debug("soft offline: %#lx: isolation failed: %d, page count %d, type %lx\n",

		pr_info("soft offline: %#lx: isolation failed: %d, page count %d, type %lx\n",

				pfn, ret, page_count(page), page->flags);

	}

	if (ret)