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veristat: Fix top source line stat collection

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Fix comparator implementation to return most popular source code
lines instead of least.
Introduce min/max macro for building veristat outside of Linux
repository.

Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241217181113.364651-1-mykyta.yatsenko5@gmail.com
This commit is contained in:
Mykyta Yatsenko 2024-12-17 18:11:13 +00:00 committed by Andrii Nakryiko
parent 58ecb3a789
commit a7c205120d
1 changed files with 9 additions and 1 deletions
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10
tools/testing/selftests/bpf/veristat.c
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@ -26,6 +26,14 @@
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
#endif
#ifndef max
#define max(a, b) ((a) > (b) ? (a) : (b))
#endif
#ifndef min
#define min(a, b) ((a) < (b) ? (a) : (b))
#endif
enum stat_id {
VERDICT,
DURATION,
@ -904,7 +912,7 @@ static int line_cnt_cmp(const void *a, const void *b)
const struct line_cnt *b_cnt = (const struct line_cnt *)b;
if (a_cnt->cnt != b_cnt->cnt)
return a_cnt->cnt < b_cnt->cnt ? -1 : 1;
return a_cnt->cnt > b_cnt->cnt ? -1 : 1;
return strcmp(a_cnt->line, b_cnt->line);
}