From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Yonghong Song <yhs@fb.com>
Cc: bpf@vger.kernel.org, Alexei Starovoitov <ast@fb.com>,
Daniel Borkmann <daniel@iogearbox.net>,
kernel-team@fb.com
Subject: Re: [PATCH bpf-next v3 0/2] bpf: add bpf_send_signal_thread() helper
Date: Wed, 15 Jan 2020 11:51:04 -0800 [thread overview]
Message-ID: <20200115195103.vncvolqjcu72odg7@ast-mbp.dhcp.thefacebook.com> (raw)
In-Reply-To: <20200115035002.602280-1-yhs@fb.com>
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(-)
prev parent reply other threads:[~2020-01-15 19:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-15 3:50 [PATCH bpf-next v3 0/2] bpf: add bpf_send_signal_thread() helper Yonghong Song
2020-01-15 3:50 ` [PATCH bpf-next v3 1/2] " Yonghong Song
2020-01-15 3:50 ` [PATCH bpf-next v3 2/2] tools/bpf: add self tests for bpf_send_signal_thread() Yonghong Song
2020-01-15 6:22 ` [PATCH bpf-next v3 0/2] bpf: add bpf_send_signal_thread() helper Andrii Nakryiko
2020-01-15 19:51 ` Alexei Starovoitov [this message]
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