Commit-ID: 5e7be3e1f9d71ed03fac27df25e143815be662d2
Gitweb: http://git.kernel.org/tip/5e7be3e1f9d71ed03fac27df25e143815be662d2
Author: Wang Nan <wangnan0@xxxxxxxxxx>
AuthorDate: Tue, 6 Sep 2016 04:58:28 +0000
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 8 Sep 2016 12:34:43 -0300
tools lib api fs: Add hugetlbfs filesystem detector
Detect hugetlbfs. hugetlbfs__mountpoint() will be used during recording
to help identifying hugetlb mmaps: which should be recognized as anon
mapping.
Signed-off-by: Wang Nan <wangnan0@xxxxxxxxxx>
Reviewed-by: Nilay Vaish <nilayvaish@xxxxxxxxx>
Cc: He Kuang <hekuang@xxxxxxxxxx>
Cc: Hou Pengyang <houpengyang@xxxxxxxxxx>
Cc: Zefan Li <lizefan@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1473137909-142064-3-git-send-email-wangnan0@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/lib/api/fs/fs.c | 15 +++++++++++++++
tools/lib/api/fs/fs.h | 1 +
2 files changed, 16 insertions(+)
diff --git a/tools/lib/api/fs/fs.c b/tools/lib/api/fs/fs.c
index ba7094b..f99f49e4 100644
--- a/tools/lib/api/fs/fs.c
+++ b/tools/lib/api/fs/fs.c
@@ -34,6 +34,10 @@
#define TRACEFS_MAGIC 0x74726163
#endif
+#ifndef HUGETLBFS_MAGIC
+#define HUGETLBFS_MAGIC 0x958458f6
+#endif
+
static const char * const sysfs__fs_known_mountpoints[] = {
"/sys",
0,
@@ -67,6 +71,10 @@ static const char * const tracefs__known_mountpoints[] = {
0,
};
+static const char * const hugetlbfs__known_mountpoints[] = {
+ 0,
+};
+
struct fs {
const char *name;
const char * const *mounts;
@@ -80,6 +88,7 @@ enum {
FS__PROCFS = 1,
FS__DEBUGFS = 2,
FS__TRACEFS = 3,
+ FS__HUGETLBFS = 4,
};
#ifndef TRACEFS_MAGIC
@@ -107,6 +116,11 @@ static struct fs fs__entries[] = {
.mounts = tracefs__known_mountpoints,
.magic = TRACEFS_MAGIC,
},
+ [FS__HUGETLBFS] = {
+ .name = "hugetlbfs",
+ .mounts = hugetlbfs__known_mountpoints,
+ .magic = HUGETLBFS_MAGIC,
+ },
};
static bool fs__read_mounts(struct fs *fs)
@@ -265,6 +279,7 @@ FS(sysfs, FS__SYSFS);
FS(procfs, FS__PROCFS);
FS(debugfs, FS__DEBUGFS);
FS(tracefs, FS__TRACEFS);
+FS(hugetlbfs, FS__HUGETLBFS);
int filename__read_int(const char *filename, int *value)
{
diff --git a/tools/lib/api/fs/fs.h b/tools/lib/api/fs/fs.h
index 16c9c2e..a63269f 100644
--- a/tools/lib/api/fs/fs.h
+++ b/tools/lib/api/fs/fs.h
@@ -21,6 +21,7 @@ FS(sysfs)
FS(procfs)
FS(debugfs)
FS(tracefs)
+FS(hugetlbfs)
#undef FS
--
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