[PATCH bpf-next v2 0/2] Implement mechanism to signal other threads

From: Puranjay Mohan
Date: Thu Sep 26 2024 - 07:53:54 EST


This set implements a kfunc called bpf_send_signal_remote() that is similar
to sigqueue() as it can send a signal along with a cookie to a thread or
thread group.

The send_signal selftest has been updated to also test this new kfunc under
all contexts.

Changes in v2:
v1: https://lore.kernel.org/bpf/20240724113944.75977-1-puranjay@xxxxxxxxxx/
- Convert to a kfunc
- Add mechanism to send a cookie with the signal.

Puranjay Mohan (2):
bpf: implement bpf_send_signal_remote() kfunc
selftests/bpf: Augment send_signal test with remote signaling

kernel/trace/bpf_trace.c | 78 +++++++++-
.../selftests/bpf/prog_tests/send_signal.c | 133 +++++++++++++-----
.../bpf/progs/test_send_signal_kern.c | 35 ++++-
3 files changed, 207 insertions(+), 39 deletions(-)

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2.40.1