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| author | Changhee Han <ch0.han@lge.com> | 2020-06-03 16:03:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-03 20:09:49 -0700 |
| commit | 5b94ce2fcae2542c4d5d49176fa23eea638dc7b6 (patch) | |
| tree | 5a2aa1c9802e1e1eb8cd49fb8f5a2babb53ac75c /tools/vm | |
| parent | 21e330fc632d6a288f73de48045b782cc51d501a (diff) | |
| download | lwn-5b94ce2fcae2542c4d5d49176fa23eea638dc7b6.tar.gz lwn-5b94ce2fcae2542c4d5d49176fa23eea638dc7b6.zip | |
tools/vm/page_owner_sort.c: filter out unneeded line
To see a sorted result from page_owner, there must be a tiresome
preprocessing step before running page_owner_sort. This patch simply
filters out lines which start with "PFN" while reading the page owner
report.
Signed-off-by: Changhee Han <ch0.han@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Link: http://lkml.kernel.org/r/20200429052940.16968-1-ch0.han@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/vm')
| -rw-r--r-- | tools/vm/page_owner_sort.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/tools/vm/page_owner_sort.c b/tools/vm/page_owner_sort.c index d3a8755c039c..85eb65ea16d3 100644 --- a/tools/vm/page_owner_sort.c +++ b/tools/vm/page_owner_sort.c @@ -4,8 +4,7 @@ * * Example use: * cat /sys/kernel/debug/page_owner > page_owner_full.txt - * grep -v ^PFN page_owner_full.txt > page_owner.txt - * ./page_owner_sort page_owner.txt sorted_page_owner.txt + * ./page_owner_sort page_owner_full.txt sorted_page_owner.txt * * See Documentation/vm/page_owner.rst */ @@ -38,6 +37,8 @@ int read_block(char *buf, int buf_size, FILE *fin) while (buf_end - curr > 1 && fgets(curr, buf_end - curr, fin)) { if (*curr == '\n') /* empty line */ return curr - buf; + if (!strncmp(curr, "PFN", 3)) + continue; curr += strlen(curr); } |