Commit d5aed9c0 authored by Simon Guo's avatar Simon Guo Committed by Linus Torvalds

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.comSigned-off-by: default avatarSimon 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 1448d4d8
#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)
......
#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;
}
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