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authorAlex Shi <alex.shi@linux.alibaba.com>2020-12-14 19:12:01 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-15 12:13:44 -0800
commit336e6b53d99ae32ee35c1a7d3d0f99db22e1ff51 (patch)
tree464b199a5d60753a7b21f54cc9b04604ac9f2950 /mm/khugepaged.c
parentebfe1b8f6ea5d83d8c1aa18ddd8ede432a7414e7 (diff)
downloadlinux-336e6b53d99ae32ee35c1a7d3d0f99db22e1ff51.tar.bz2
khugepaged: add parameter explanations for kernel-doc markup
Add missed parameter explanation for some kernel-doc warnings: mm/khugepaged.c:102: warning: Function parameter or member 'nr_pte_mapped_thp' not described in 'mm_slot' mm/khugepaged.c:102: warning: Function parameter or member 'pte_mapped_thp' not described in 'mm_slot' mm/khugepaged.c:1424: warning: Function parameter or member 'mm' not described in 'collapse_pte_mapped_thp' mm/khugepaged.c:1424: warning: Function parameter or member 'addr' not described in 'collapse_pte_mapped_thp' mm/khugepaged.c:1626: warning: Function parameter or member 'mm' not described in 'collapse_file' mm/khugepaged.c:1626: warning: Function parameter or member 'file' not described in 'collapse_file' mm/khugepaged.c:1626: warning: Function parameter or member 'start' not described in 'collapse_file' mm/khugepaged.c:1626: warning: Function parameter or member 'hpage' not described in 'collapse_file' mm/khugepaged.c:1626: warning: Function parameter or member 'node' not described in 'collapse_file' Link: https://lkml.kernel.org/r/1605597325-25284-1-git-send-email-alex.shi@linux.alibaba.com Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/khugepaged.c')
-rw-r--r--mm/khugepaged.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 757292532767..2cc78a51c398 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -90,6 +90,8 @@ static struct kmem_cache *mm_slot_cache __read_mostly;
* @hash: hash collision list
* @mm_node: khugepaged scan list headed in khugepaged_scan.mm_head
* @mm: the mm that this information is valid for
+ * @nr_pte_mapped_thp: number of pte mapped THP
+ * @pte_mapped_thp: address array corresponding pte mapped THP
*/
struct mm_slot {
struct hlist_node hash;
@@ -1414,7 +1416,11 @@ static int khugepaged_add_pte_mapped_thp(struct mm_struct *mm,
}
/**
- * Try to collapse a pte-mapped THP for mm at address haddr.
+ * collapse_pte_mapped_thp - Try to collapse a pte-mapped THP for mm at
+ * address haddr.
+ *
+ * @mm: process address space where collapse happens
+ * @addr: THP collapse address
*
* This function checks whether all the PTEs in the PMD are pointing to the
* right THP. If so, retract the page table so the THP can refault in with
@@ -1605,6 +1611,12 @@ static void retract_page_tables(struct address_space *mapping, pgoff_t pgoff)
/**
* collapse_file - collapse filemap/tmpfs/shmem pages into huge one.
*
+ * @mm: process address space where collapse happens
+ * @file: file that collapse on
+ * @start: collapse start address
+ * @hpage: new allocated huge page for collapse
+ * @node: appointed node the new huge page allocate from
+ *
* Basic scheme is simple, details are more complex:
* - allocate and lock a new huge page;
* - scan page cache replacing old pages with the new one