| Message ID | 20240704025247.86418-1-jhubbard@nvidia.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | [v3] selftest/timerns: fix clang build failures for abs() calls | expand |
On Wed, Jul 3, 2024 at 7:52 PM John Hubbard <jhubbard@nvidia.com> wrote: > > When building with clang, via: > > make LLVM=1 -C tools/testing/selftests > > ...clang warns about mismatches between the expected and required > integer length being supplied to abs(3). > > Fix this by using the correct variant of abs(3): labs(3) or llabs(3), in > these cases. > Acked-by: Andrei Vagin <avagin@google.com> > Reviewed-by: Dmitry Safonov <dima@arista.com> > Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com> > Signed-off-by: John Hubbard <jhubbard@nvidia.com> > --- > > Hi, > > Changes since v2: > > 1) Commit description: removed the reference to Valentin Obst's patch > being a prerequisite, now that that has been merged. > > 2) Rebased on Linux 6.10-rc6+. > > Changes since the first version: > > 1) Rebased onto Linux 6.10-rc1 > > 2) Reviewed-by's added. > > thanks, > John Hubbard > > > tools/testing/selftests/timens/exec.c | 6 +++--- > tools/testing/selftests/timens/timer.c | 2 +- > tools/testing/selftests/timens/timerfd.c | 2 +- > tools/testing/selftests/timens/vfork_exec.c | 4 ++-- > 4 files changed, 7 insertions(+), 7 deletions(-) > > diff --git a/tools/testing/selftests/timens/exec.c b/tools/testing/selftests/timens/exec.c > index e40dc5be2f66..d12ff955de0d 100644 > --- a/tools/testing/selftests/timens/exec.c > +++ b/tools/testing/selftests/timens/exec.c > @@ -30,7 +30,7 @@ int main(int argc, char *argv[]) > > for (i = 0; i < 2; i++) { > _gettime(CLOCK_MONOTONIC, &tst, i); > - if (abs(tst.tv_sec - now.tv_sec) > 5) > + if (labs(tst.tv_sec - now.tv_sec) > 5) > return pr_fail("%ld %ld\n", now.tv_sec, tst.tv_sec); > } > return 0; > @@ -50,7 +50,7 @@ int main(int argc, char *argv[]) > > for (i = 0; i < 2; i++) { > _gettime(CLOCK_MONOTONIC, &tst, i); > - if (abs(tst.tv_sec - now.tv_sec) > 5) > + if (labs(tst.tv_sec - now.tv_sec) > 5) > return pr_fail("%ld %ld\n", > now.tv_sec, tst.tv_sec); > } > @@ -70,7 +70,7 @@ int main(int argc, char *argv[]) > /* Check that a child process is in the new timens. */ > for (i = 0; i < 2; i++) { > _gettime(CLOCK_MONOTONIC, &tst, i); > - if (abs(tst.tv_sec - now.tv_sec - OFFSET) > 5) > + if (labs(tst.tv_sec - now.tv_sec - OFFSET) > 5) > return pr_fail("%ld %ld\n", > now.tv_sec + OFFSET, tst.tv_sec); > } > diff --git a/tools/testing/selftests/timens/timer.c b/tools/testing/selftests/timens/timer.c > index 5e7f0051bd7b..5b939f59dfa4 100644 > --- a/tools/testing/selftests/timens/timer.c > +++ b/tools/testing/selftests/timens/timer.c > @@ -56,7 +56,7 @@ int run_test(int clockid, struct timespec now) > return pr_perror("timerfd_gettime"); > > elapsed = new_value.it_value.tv_sec; > - if (abs(elapsed - 3600) > 60) { > + if (llabs(elapsed - 3600) > 60) { > ksft_test_result_fail("clockid: %d elapsed: %lld\n", > clockid, elapsed); > return 1; > diff --git a/tools/testing/selftests/timens/timerfd.c b/tools/testing/selftests/timens/timerfd.c > index 9edd43d6b2c1..a4196bbd6e33 100644 > --- a/tools/testing/selftests/timens/timerfd.c > +++ b/tools/testing/selftests/timens/timerfd.c > @@ -61,7 +61,7 @@ int run_test(int clockid, struct timespec now) > return pr_perror("timerfd_gettime(%d)", clockid); > > elapsed = new_value.it_value.tv_sec; > - if (abs(elapsed - 3600) > 60) { > + if (llabs(elapsed - 3600) > 60) { > ksft_test_result_fail("clockid: %d elapsed: %lld\n", > clockid, elapsed); > return 1; > diff --git a/tools/testing/selftests/timens/vfork_exec.c b/tools/testing/selftests/timens/vfork_exec.c > index beb7614941fb..5b8907bf451d 100644 > --- a/tools/testing/selftests/timens/vfork_exec.c > +++ b/tools/testing/selftests/timens/vfork_exec.c > @@ -32,7 +32,7 @@ static void *tcheck(void *_args) > > for (i = 0; i < 2; i++) { > _gettime(CLOCK_MONOTONIC, &tst, i); > - if (abs(tst.tv_sec - now->tv_sec) > 5) { > + if (labs(tst.tv_sec - now->tv_sec) > 5) { > pr_fail("%s: in-thread: unexpected value: %ld (%ld)\n", > args->tst_name, tst.tv_sec, now->tv_sec); > return (void *)1UL; > @@ -64,7 +64,7 @@ static int check(char *tst_name, struct timespec *now) > > for (i = 0; i < 2; i++) { > _gettime(CLOCK_MONOTONIC, &tst, i); > - if (abs(tst.tv_sec - now->tv_sec) > 5) > + if (labs(tst.tv_sec - now->tv_sec) > 5) > return pr_fail("%s: unexpected value: %ld (%ld)\n", > tst_name, tst.tv_sec, now->tv_sec); > } > > base-commit: 8a9c6c40432e265600232b864f97d7c675e8be52 > -- > 2.45.2 >
diff --git a/tools/testing/selftests/timens/exec.c b/tools/testing/selftests/timens/exec.c index e40dc5be2f66..d12ff955de0d 100644 --- a/tools/testing/selftests/timens/exec.c +++ b/tools/testing/selftests/timens/exec.c @@ -30,7 +30,7 @@ int main(int argc, char *argv[]) for (i = 0; i < 2; i++) { _gettime(CLOCK_MONOTONIC, &tst, i); - if (abs(tst.tv_sec - now.tv_sec) > 5) + if (labs(tst.tv_sec - now.tv_sec) > 5) return pr_fail("%ld %ld\n", now.tv_sec, tst.tv_sec); } return 0; @@ -50,7 +50,7 @@ int main(int argc, char *argv[]) for (i = 0; i < 2; i++) { _gettime(CLOCK_MONOTONIC, &tst, i); - if (abs(tst.tv_sec - now.tv_sec) > 5) + if (labs(tst.tv_sec - now.tv_sec) > 5) return pr_fail("%ld %ld\n", now.tv_sec, tst.tv_sec); } @@ -70,7 +70,7 @@ int main(int argc, char *argv[]) /* Check that a child process is in the new timens. */ for (i = 0; i < 2; i++) { _gettime(CLOCK_MONOTONIC, &tst, i); - if (abs(tst.tv_sec - now.tv_sec - OFFSET) > 5) + if (labs(tst.tv_sec - now.tv_sec - OFFSET) > 5) return pr_fail("%ld %ld\n", now.tv_sec + OFFSET, tst.tv_sec); } diff --git a/tools/testing/selftests/timens/timer.c b/tools/testing/selftests/timens/timer.c index 5e7f0051bd7b..5b939f59dfa4 100644 --- a/tools/testing/selftests/timens/timer.c +++ b/tools/testing/selftests/timens/timer.c @@ -56,7 +56,7 @@ int run_test(int clockid, struct timespec now) return pr_perror("timerfd_gettime"); elapsed = new_value.it_value.tv_sec; - if (abs(elapsed - 3600) > 60) { + if (llabs(elapsed - 3600) > 60) { ksft_test_result_fail("clockid: %d elapsed: %lld\n", clockid, elapsed); return 1; diff --git a/tools/testing/selftests/timens/timerfd.c b/tools/testing/selftests/timens/timerfd.c index 9edd43d6b2c1..a4196bbd6e33 100644 --- a/tools/testing/selftests/timens/timerfd.c +++ b/tools/testing/selftests/timens/timerfd.c @@ -61,7 +61,7 @@ int run_test(int clockid, struct timespec now) return pr_perror("timerfd_gettime(%d)", clockid); elapsed = new_value.it_value.tv_sec; - if (abs(elapsed - 3600) > 60) { + if (llabs(elapsed - 3600) > 60) { ksft_test_result_fail("clockid: %d elapsed: %lld\n", clockid, elapsed); return 1; diff --git a/tools/testing/selftests/timens/vfork_exec.c b/tools/testing/selftests/timens/vfork_exec.c index beb7614941fb..5b8907bf451d 100644 --- a/tools/testing/selftests/timens/vfork_exec.c +++ b/tools/testing/selftests/timens/vfork_exec.c @@ -32,7 +32,7 @@ static void *tcheck(void *_args) for (i = 0; i < 2; i++) { _gettime(CLOCK_MONOTONIC, &tst, i); - if (abs(tst.tv_sec - now->tv_sec) > 5) { + if (labs(tst.tv_sec - now->tv_sec) > 5) { pr_fail("%s: in-thread: unexpected value: %ld (%ld)\n", args->tst_name, tst.tv_sec, now->tv_sec); return (void *)1UL; @@ -64,7 +64,7 @@ static int check(char *tst_name, struct timespec *now) for (i = 0; i < 2; i++) { _gettime(CLOCK_MONOTONIC, &tst, i); - if (abs(tst.tv_sec - now->tv_sec) > 5) + if (labs(tst.tv_sec - now->tv_sec) > 5) return pr_fail("%s: unexpected value: %ld (%ld)\n", tst_name, tst.tv_sec, now->tv_sec); }
When building with clang, via: make LLVM=1 -C tools/testing/selftests ...clang warns about mismatches between the expected and required integer length being supplied to abs(3). Fix this by using the correct variant of abs(3): labs(3) or llabs(3), in these cases. Reviewed-by: Dmitry Safonov <dima@arista.com> Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Signed-off-by: John Hubbard <jhubbard@nvidia.com> --- Hi, Changes since v2: 1) Commit description: removed the reference to Valentin Obst's patch being a prerequisite, now that that has been merged. 2) Rebased on Linux 6.10-rc6+. Changes since the first version: 1) Rebased onto Linux 6.10-rc1 2) Reviewed-by's added. thanks, John Hubbard tools/testing/selftests/timens/exec.c | 6 +++--- tools/testing/selftests/timens/timer.c | 2 +- tools/testing/selftests/timens/timerfd.c | 2 +- tools/testing/selftests/timens/vfork_exec.c | 4 ++-- 4 files changed, 7 insertions(+), 7 deletions(-) base-commit: 8a9c6c40432e265600232b864f97d7c675e8be52