On Tue, Jan 14, 2020 at 07:50:02PM -0800, Yonghong Song wrote:
> Commit 8b401f9ed244 ("bpf: implement bpf_send_signal() helper")
> added helper bpf_send_signal() which permits bpf program to
> send a signal to the current process. The signal may send to
> any thread of the process.
>
> This patch implemented a new helper bpf_send_signal_thread()
> to send a signal to the thread corresponding to the kernel current task.
> This helper can simplify user space code if the thread context of
> bpf sending signal is needed in user space. Please see Patch #1 for
> details of use case and kernel implementation.
>
> Patch #2 added some bpf self tests for the new helper.
>
> Changelogs:
> v2 -> v3:
> - More simplification for skeleton codes by removing not-needed
> mmap code and redundantly created tracepoint link.
> v1 -> v2:
> - More description for the difference between bpf_send_signal()
> and bpf_send_signal_thread() in the uapi header bpf.h.
> - Use skeleton and mmap for send_signal test.
Applied. Thanks.
Though extra tests were added it's nice to see that skeleton keeps deleting
lines from selftests:
2 files changed, 73 insertions(+), 106 deletions(-)
