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Commit 5e7be3e1 authored by Wang Nan's avatar Wang Nan Committed by Arnaldo Carvalho de Melo
Browse files

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: default avatarWang Nan <wangnan0@huawei.com>
Reviewed-by: default avatarNilay Vaish <nilayvaish@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Hou Pengyang <houpengyang@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Link: http://lkml.kernel.org/r/1473137909-142064-3-git-send-email-wangnan0@huawei.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 0ac3348e

tools/lib/api/fs/fs.c

+15 −0
Original line number Diff line number Diff line
@@ -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)

{

tools/lib/api/fs/fs.h

+1 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ FS(sysfs) 
FS(procfs)

FS(debugfs)

FS(tracefs)

FS(hugetlbfs)



#undef FS