selftest: move seek_to_smaps_entry() out of mlock2-tests.c

Function seek_to_smaps_entry() can be useful for other selftest
functionalities, so move it out to header file.

Link: http://lkml.kernel.org/r/1473325970-11393-3-git-send-email-wei.guo.simon@gmail.com
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Eric B Munson <emunson@akamai.com>
Cc: Simon Guo <wei.guo.simon@gmail.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Alexey Klimov <klimov.linux@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/tools/testing/selftests/vm/mlock2-tests.c b/tools/testing/selftests/vm/mlock2-tests.c
index 7cb13cede483a84c607619d163dd6ebaebdc568f..ff0cda2b19c97fd0ad7f75906e9c348094934a7b 100644 (file)
--- a/tools/testing/selftests/vm/mlock2-tests.c
+++ b/tools/testing/selftests/vm/mlock2-tests.c
@@ -1,8 +1,6 @@
 #define _GNU_SOURCE
 #include <sys/mman.h>
 #include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
 #include <sys/time.h>
@@ -119,46 +117,6 @@ static uint64_t get_kpageflags(unsigned long pfn)
        return flags;
 }
 
-static FILE *seek_to_smaps_entry(unsigned long addr)
-{
-       FILE *file;
-       char *line = NULL;
-       size_t size = 0;
-       unsigned long start, end;
-       char perms[5];
-       unsigned long offset;
-       char dev[32];
-       unsigned long inode;
-       char path[BUFSIZ];
-
-       file = fopen("/proc/self/smaps", "r");
-       if (!file) {
-               perror("fopen smaps");
-               _exit(1);
-       }
-
-       while (getline(&line, &size, file) > 0) {
-               if (sscanf(line, "%lx-%lx %s %lx %s %lu %s\n",
-                          &start, &end, perms, &offset, dev, &inode, path) < 6)
-                       goto next;
-
-               if (start <= addr && addr < end)
-                       goto out;
-
-next:
-               free(line);
-               line = NULL;
-               size = 0;
-       }
-
-       fclose(file);
-       file = NULL;
-
-out:
-       free(line);
-       return file;
-}
-
 #define VMFLAGS "VmFlags:"
 
 static bool is_vmflag_set(unsigned long addr, const char *vmflag)

diff --git a/tools/testing/selftests/vm/mlock2.h b/tools/testing/selftests/vm/mlock2.h
index b9c6d9fe372f65e7e00d31a7169b8f5dc24f80f8..7ee062929d3e9ba6c134ac8d70961c69b1c54b69 100644 (file)
--- a/tools/testing/selftests/vm/mlock2.h
+++ b/tools/testing/selftests/vm/mlock2.h
@@ -1,5 +1,7 @@
 #include <syscall.h>
 #include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
 
 #ifndef MLOCK_ONFAULT
 #define MLOCK_ONFAULT 1
@@ -18,3 +20,43 @@ static int mlock2_(void *start, size_t len, int flags)
        return -1;
 #endif
 }
+
+static FILE *seek_to_smaps_entry(unsigned long addr)
+{
+       FILE *file;
+       char *line = NULL;
+       size_t size = 0;
+       unsigned long start, end;
+       char perms[5];
+       unsigned long offset;
+       char dev[32];
+       unsigned long inode;
+       char path[BUFSIZ];
+
+       file = fopen("/proc/self/smaps", "r");
+       if (!file) {
+               perror("fopen smaps");
+               _exit(1);
+       }
+
+       while (getline(&line, &size, file) > 0) {
+               if (sscanf(line, "%lx-%lx %s %lx %s %lu %s\n",
+                          &start, &end, perms, &offset, dev, &inode, path) < 6)
+                       goto next;
+
+               if (start <= addr && addr < end)
+                       goto out;
+
+next:
+               free(line);
+               line = NULL;
+               size = 0;
+       }
+
+       fclose(file);
+       file = NULL;
+
+out:
+       free(line);
+       return file;
+}