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We use wait_port_listen() extensively to wait for a process we spawned to be ready. Not all processes will open listening sockets. Add a method of explicitly waiting for a child to be ready. Pass a FD to the spawned process and wait for it to write a message to us. FD number is passed via KSFT_READY_FD env variable. Similarly use KSFT_WAIT_FD to let the child process for a sign that we are done and child should exit. Sending a signal to a child with shell=True can get tricky. Make use of this method in the queues test to make it less flaky. Acked-by: Stanislav Fomichev <sdf@fomichev.me> Acked-by: Joe Damato <jdamato@fastly.com> Tested-by: Joe Damato <jdamato@fastly.com> Link: https://patch.msgid.link/20250219234956.520599-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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| crypto/chacha20-s390 | ||
| cxl | ||
| fault-injection | ||
| ktest | ||
| kunit | ||
| memblock | ||
| nvdimm | ||
| radix-tree | ||
| scatterlist | ||
| selftests | ||
| shared | ||
| vma | ||
| vsock | ||