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authorArnaldo Carvalho de Melo <acme@redhat.com>2016-09-12 22:47:57 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-09-13 21:26:30 +0300
commitfbef103fad5009827965b10aedbecb1786904f4d (patch)
treef82580214bbc2fd215c76e741b7f0b29b72354f5 /tools/perf/util/map.c
parent277cf08f3febd9d0921f4ff1b46fd5d294fe3942 (diff)
downloadlinux-fbef103fad5009827965b10aedbecb1786904f4d.tar.xz
perf tools: Do hugetlb handling in more systems
The csets: 0ac3348e5024 ("perf tools: Recognize hugetlb mapping as anon mapping") d7e404af115b ("perf record: Mark MAP_HUGETLB when synthesizing mmap events") Added code conditional on MAP_HUGETLB, to make it build in older systems where that define wasn't available. Now that we grabbed copies of uapi/linux/mmap.h to have all those definitions in tools/, use it so that we can support building the tools for older systems (without the MAP_HUGETLB define in its libc headers) using new kernels that support such maps. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Cc: Zefan Li <lizefan@huawei.com> Link: http://lkml.kernel.org/n/tip-wv6oqbfkpxbix4umj2kcfmaz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/map.c')
-rw-r--r--tools/perf/util/map.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index d51a1257973b..c662fef95d14 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -6,7 +6,7 @@
#include <string.h>
#include <stdio.h>
#include <unistd.h>
-#include <sys/mman.h>
+#include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
#include "map.h"
#include "thread.h"
#include "strlist.h"
@@ -27,12 +27,7 @@ const char *map_type__name[MAP__NR_TYPES] = {
static inline int is_anon_memory(const char *filename, u32 flags)
{
- u32 anon_flags = 0;
-
-#ifdef MAP_HUGETLB
- anon_flags |= MAP_HUGETLB;
-#endif
- return flags & anon_flags ||
+ return flags & MAP_HUGETLB ||
!strcmp(filename, "//anon") ||
!strncmp(filename, "/dev/zero", sizeof("/dev/zero") - 1) ||
!strncmp(filename, "/anon_hugepage", sizeof("/anon_hugepage") - 1);