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sched_ext/selftests: Fix format specifier and buffer length in file_write_long()

Use %ld (not %lu) for signed long, and pass the actual string length
returned by sprintf() to write_text() instead of sizeof(buf).

Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

authored by

Cheng-Yang Chou and committed by
Tejun Heo 6944e6d8 7a846455

+2 -2
+2 -2
tools/testing/selftests/sched_ext/util.c
··· 60 60 char buf[64]; 61 61 int ret; 62 62 63 - ret = sprintf(buf, "%lu", val); 63 + ret = sprintf(buf, "%ld", val); 64 64 if (ret < 0) 65 65 return ret; 66 66 67 - if (write_text(path, buf, sizeof(buf)) <= 0) 67 + if (write_text(path, buf, ret) <= 0) 68 68 return -1; 69 69 70 70 return 0;