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| author | Mark Brown <broonie@kernel.org> | 2022-08-29 16:44:50 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2022-09-06 18:31:41 +0100 |
| commit | 05a5980f7ff50e6c18a9f38ca49521180a333fdf (patch) | |
| tree | 2bd4b8ba28c4eb7096c22a1e573380e7cf2e951b /tools/testing/selftests/arm64/fp/sve-test.S | |
| parent | 9e40e6272353ea0fde654b548c96e8bbab2fed9f (diff) | |
| download | linux-05a5980f7ff50e6c18a9f38ca49521180a333fdf.tar.bz2 | |
kselftest/arm64: Count SIGUSR2 deliveries in FP stress tests
Currently the floating point stress tests mostly support testing that the
data they are checking can be disrupted from a signal handler triggered by
SIGUSR1. This is not properly implemented for all the tests and in testing
is frequently modified to just handle the signal without corrupting data in
order to ensure that signal handling does not corrupt data. Directly support
this usage by installing a SIGUSR2 handler which simply counts the signal
delivery.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220829154452.824870-3-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'tools/testing/selftests/arm64/fp/sve-test.S')
| -rw-r--r-- | tools/testing/selftests/arm64/fp/sve-test.S | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S index 589264231a2d..79c56e6c5b23 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -314,6 +314,15 @@ function irritator_handler ret endfunction +function tickle_handler + // Increment the signal count (x23): + ldr x0, [x2, #ucontext_regs + 8 * 23] + add x0, x0, #1 + str x0, [x2, #ucontext_regs + 8 * 23] + + ret +endfunction + function terminate_handler mov w21, w0 mov x20, x2 @@ -423,6 +432,12 @@ _start: orr w2, w2, #SA_NODEFER bl setsignal + mov w0, #SIGUSR2 + adr x1, tickle_handler + mov w2, #SA_SIGINFO + orr w2, w2, #SA_NODEFER + bl setsignal + #ifdef SSVE smstart_sm // syscalls will have exited streaming mode #endif |