[PATCH 07/23] mm: trace filemap: dump page order
From: Kirill A. Shutemov <hidden>
Date: 2013-08-04 02:17:09
Also in:
linux-fsdevel, lkml
Subsystem:
page cache, the rest, tracing · Maintainers:
Matthew Wilcox, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
From: "Kirill A. Shutemov" <redacted> Dump page order to trace to be able to distinguish between small page and huge page in page cache. Signed-off-by: Kirill A. Shutemov <redacted> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> --- include/trace/events/filemap.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/include/trace/events/filemap.h b/include/trace/events/filemap.h
index 0421f49..7e14b13 100644
--- a/include/trace/events/filemap.h
+++ b/include/trace/events/filemap.h@@ -21,6 +21,7 @@ DECLARE_EVENT_CLASS(mm_filemap_op_page_cache, __field(struct page *, page) __field(unsigned long, i_ino) __field(unsigned long, index) + __field(int, order) __field(dev_t, s_dev) ),
@@ -28,18 +29,20 @@ DECLARE_EVENT_CLASS(mm_filemap_op_page_cache, __entry->page = page; __entry->i_ino = page->mapping->host->i_ino; __entry->index = page->index; + __entry->order = compound_order(page); if (page->mapping->host->i_sb) __entry->s_dev = page->mapping->host->i_sb->s_dev; else __entry->s_dev = page->mapping->host->i_rdev; ), - TP_printk("dev %d:%d ino %lx page=%p pfn=%lu ofs=%lu", + TP_printk("dev %d:%d ino %lx page=%p pfn=%lu ofs=%lu order=%d", MAJOR(__entry->s_dev), MINOR(__entry->s_dev), __entry->i_ino, __entry->page, page_to_pfn(__entry->page), - __entry->index << PAGE_SHIFT) + __entry->index << PAGE_SHIFT, + __entry->order) ); DEFINE_EVENT(mm_filemap_op_page_cache, mm_filemap_delete_from_page_cache,
--
1.8.3.2
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