From dcdf11ee144133328664d90836e712d840d047d9 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Mon, 6 Apr 2020 20:04:25 -0700 Subject: mm, shmem: add vmstat for hugepage fallback The existing thp_fault_fallback indicates when thp attempts to allocate a hugepage but fails, or if the hugepage cannot be charged to the mem cgroup hierarchy. Extend this to shmem as well. Adds a new thp_file_fallback to complement thp_file_alloc that gets incremented when a hugepage is attempted to be allocated but fails, or if it cannot be charged to the mem cgroup hierarchy. Additionally, remove the check for CONFIG_TRANSPARENT_HUGE_PAGECACHE from shmem_alloc_hugepage() since it is only called with this configuration option. Signed-off-by: David Rientjes Signed-off-by: Andrew Morton Reviewed-by: Yang Shi Acked-by: Kirill A. Shutemov Cc: Mike Rapoport Cc: Jeremy Cline Cc: Andrea Arcangeli Cc: Mike Kravetz Cc: Michal Hocko Cc: Vlastimil Babka Link: http://lkml.kernel.org/r/alpine.DEB.2.21.2003061421240.7412@chino.kir.corp.google.com Signed-off-by: Linus Torvalds --- mm/vmstat.c | 1 + 1 file changed, 1 insertion(+) (limited to 'mm/vmstat.c') diff --git a/mm/vmstat.c b/mm/vmstat.c index c9c0d71f917f..ebc1dcaa0539 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1259,6 +1259,7 @@ const char * const vmstat_text[] = { "thp_collapse_alloc", "thp_collapse_alloc_failed", "thp_file_alloc", + "thp_file_fallback", "thp_file_mapped", "thp_split_page", "thp_split_page_failed", -- cgit v1.2.3