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tools/mm/page_owner_sort: add help option support 

Add -h/--help option to display usage information and improve code style.

Link: https://lkml.kernel.org/r/20251016054927.138510-1-ye.liu@linux.dev
Signed-off-by: Ye Liu <liuye@kylinos.cn>
Cc: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Ye Liu 2025-10-16 13:49:25 +08:00 committed by Andrew Morton
parent d929525c2e
commit 5bf65d4a8d
1 changed files with 7 additions and 3 deletions
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10
tools/mm/page_owner_sort.c
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@ -667,14 +667,15 @@ int main(int argc, char **argv)
{ "pid", required_argument, NULL, 1 },
{ "tgid", required_argument, NULL, 2 },
{ "name", required_argument, NULL, 3 },
{ "cull", required_argument, NULL, 4 },
{ "sort", required_argument, NULL, 5 },
{ "cull", required_argument, NULL, 4 },
{ "sort", required_argument, NULL, 5 },
{ "help", no_argument, NULL, 'h' },
{ 0, 0, 0, 0},
};
compare_flag = COMP_NO_FLAG;
while ((opt = getopt_long(argc, argv, "admnpstP", longopts, NULL)) != -1)
while ((opt = getopt_long(argc, argv, "admnpstPh", longopts, NULL)) != -1)
switch (opt) {
case 'a':
compare_flag |= COMP_ALLOC;
@ -700,6 +701,9 @@ int main(int argc, char **argv)
case 'n':
compare_flag |= COMP_COMM;
break;
case 'h':
usage();
exit(0);
case 1:
filter = filter | FILTER_PID;
fc.pids = parse_nums_list(optarg, &fc.pids_size);