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| author | FUJITA Tomonori <fujita.tomonori@gmail.com> | 2026-08-07 22:05:31 +0900 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2026-08-11 11:34:06 +0200 |
| commit | ec90dfcf05f02206c280bb59af660bbb3ae177d0 (patch) | |
| tree | 3179c491c886c77cdf9b87f7617e2bb3eaada029 /tools/perf/scripts/python/parallel-perf.py | |
| parent | 409d09194c4a405af555464777e903e73a13ab78 (diff) | |
rust: time: fix as_micros_ceil() rounding near i64::MAX
The ceiling adjustment used saturating_add(NSEC_PER_USEC - 1) before
dividing. Once the nanosecond value gets within NSEC_PER_USEC - 1 of
i64::MAX the addition saturates to i64::MAX, which drops the ceiling
bias and can yield a result one microsecond too small.
Fixes: fae0cdc12340 ("rust: time: Introduce Delta type")
Reported-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Closes: https://lore.kernel.org/rust-for-linux/CANiq72mtS0ABA2JnT5tpz6J9c_mnxY+vyPvghV_ukngWvN8F2w@mail.gmail.com/
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Acked-by: Andreas Hindborg <a.hindborg@kernel.org>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260807130531.1056209-1-tomo@flapping.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/parallel-perf.py')
0 files changed, 0 insertions, 0 deletions