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author | Simon Guo <wei.guo.simon@gmail.com> | 2016-10-07 16:59:49 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-07 18:46:28 -0700 |
commit | d5aed9c06712520a6e919dc5c0525e39d9795124 (patch) | |
tree | 757c69222eb90e0d58650cbaaac82349738a2889 /tools/testing/selftests/vm/mlock2.h | |
parent | 1448d4d8931c53a9b965a6883055a4c6150f859a (diff) | |
download | blackbird-op-linux-d5aed9c06712520a6e919dc5c0525e39d9795124.tar.gz blackbird-op-linux-d5aed9c06712520a6e919dc5c0525e39d9795124.zip |
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>
Diffstat (limited to 'tools/testing/selftests/vm/mlock2.h')
-rw-r--r-- | tools/testing/selftests/vm/mlock2.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/tools/testing/selftests/vm/mlock2.h b/tools/testing/selftests/vm/mlock2.h index b9c6d9fe372f..7ee062929d3e 100644 --- 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; +} |