Hello:
This series was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@xxxxxxxxxx>:
On Tue, 12 Nov 2024 03:09:02 -0800 you wrote:
> Test case 'bpf_signal' had been recently reported to stall, both on
> the mailing list [1] and CI [2]. The stall is caused by CPU cycles
> perf event not being delivered within expected time frame, before test
> process enters system call and waits indefinitely.
>
> This patch-set addresses the issue in several ways:
> - A watchdog timer is added to test_progs.c runner:
> - it prints current sub-test name to stderr if sub-test takes longer
> than 10 seconds to finish;
> - it terminates process executing sub-test if sub-test takes longer
> than 120 seconds to finish.
> - The test case is updated to await perf event notification with a
> timeout and a few retries, this serves two purposes:
> - busy loops longer to increase the time frame for CPU cycles event
> generation/delivery;
> - makes a timeout, not stall, a worst case scenario.
> - The test case is updated to lower frequency of perf events, as high
> frequency of such events caused events generation throttling,
> which in turn delayed events delivery by amount of time sufficient
> to cause test case failure.
>
> [...]
Here is the summary with links:
- [bpf-next,1/4] selftests/bpf: watchdog timer for test_progs
https://git.kernel.org/bpf/bpf-next/c/d9d4d127e813
- [bpf-next,2/4] selftests/bpf: add read_with_timeout() utility function
https://git.kernel.org/bpf/bpf-next/c/03066ed3105a
- [bpf-next,3/4] selftests/bpf: allow send_signal test to timeout
https://git.kernel.org/bpf/bpf-next/c/3209139d00e5
- [bpf-next,4/4] selftests/bpf: update send_signal to lower perf evemts frequency
https://git.kernel.org/bpf/bpf-next/c/4edab4c55d2d
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html
