diff options
| author | Vlastimil Babka <vbabka@suse.cz> | 2016-03-15 22:56:24 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-16 00:55:16 +0100 |
| commit | ff8e81163889ac4c7f59e7f7db6377d0c5d8d69c (patch) | |
| tree | 6b6cb957fafdee49e5453d4dc556f343d0a98d56 /mm | |
| parent | mm, page_owner: dump page owner info from dump_page() (diff) | |
| download | linux-ff8e81163889ac4c7f59e7f7db6377d0c5d8d69c.tar.xz linux-ff8e81163889ac4c7f59e7f7db6377d0c5d8d69c.zip | |
mm, debug: move bad flags printing to bad_page()
Since bad_page() is the only user of the badflags parameter of
dump_page_badflags(), we can move the code to bad_page() and simplify a
bit.
The dump_page_badflags() function is renamed to __dump_page() and can
still be called separately from dump_page() for temporary debug prints
where page_owner info is not desired.
The only user-visible change is that page->mem_cgroup is printed before
the bad flags.
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/debug.c | 10 | ||||
| -rw-r--r-- | mm/page_alloc.c | 10 |
2 files changed, 10 insertions, 10 deletions
diff --git a/mm/debug.c b/mm/debug.c index 61b1f1bb328e..df7247b0b532 100644 --- a/mm/debug.c +++ b/mm/debug.c @@ -40,8 +40,7 @@ const struct trace_print_flags vmaflag_names[] = { {0, NULL} }; -void dump_page_badflags(struct page *page, const char *reason, - unsigned long badflags) +void __dump_page(struct page *page, const char *reason) { pr_emerg("page:%p count:%d mapcount:%d mapping:%p index:%#lx", page, atomic_read(&page->_count), page_mapcount(page), @@ -50,15 +49,12 @@ void dump_page_badflags(struct page *page, const char *reason, pr_cont(" compound_mapcount: %d", compound_mapcount(page)); pr_cont("\n"); BUILD_BUG_ON(ARRAY_SIZE(pageflag_names) != __NR_PAGEFLAGS + 1); + pr_emerg("flags: %#lx(%pGp)\n", page->flags, &page->flags); if (reason) pr_alert("page dumped because: %s\n", reason); - badflags &= page->flags; - if (badflags) - pr_alert("bad because of flags: %#lx(%pGp)\n", badflags, - &badflags); #ifdef CONFIG_MEMCG if (page->mem_cgroup) pr_alert("page->mem_cgroup:%p\n", page->mem_cgroup); @@ -67,7 +63,7 @@ void dump_page_badflags(struct page *page, const char *reason, void dump_page(struct page *page, const char *reason) { - dump_page_badflags(page, reason, 0); + __dump_page(page, reason); dump_page_owner(page); } EXPORT_SYMBOL(dump_page); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index d98672d33752..0691403aed93 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -430,7 +430,7 @@ static void bad_page(struct page *page, const char *reason, goto out; } if (nr_unshown) { - printk(KERN_ALERT + pr_alert( "BUG: Bad page state: %lu messages suppressed\n", nr_unshown); nr_unshown = 0; @@ -440,9 +440,13 @@ static void bad_page(struct page *page, const char *reason, if (nr_shown++ == 0) resume = jiffies + 60 * HZ; - printk(KERN_ALERT "BUG: Bad page state in process %s pfn:%05lx\n", + pr_alert("BUG: Bad page state in process %s pfn:%05lx\n", current->comm, page_to_pfn(page)); - dump_page_badflags(page, reason, bad_flags); + __dump_page(page, reason); + bad_flags &= page->flags; + if (bad_flags) + pr_alert("bad because of flags: %#lx(%pGp)\n", + bad_flags, &bad_flags); dump_page_owner(page); print_modules(); |