Re: [PATCH net-next v3 3/4] selftests: drv-net: add a kperf runner

[Jakub Kicinski <kuba@kernel.org>]

On Mon,  2 Nov 2026 11:08:26 -0800 Stanislav Fomichev wrote:
> +    def _wait_exit(self, remote, timeout=60):
> +        """Wait for the sessions of a server to exit.
> +
> +        Killing the server leaves its sessions, which exit once they have
> +        released their devmem and RX steering, which the next test needs.
> +        Being forked, they run with the server's command line.  The
> +        bracket keeps pgrep from matching the shell which runs it.
> +        """
> +        host = self.env.remote if remote else None
> +        args = ["pgrep", "-f",
> +                f"[k]perf-server --pid-file {self._pid_file(remote)}"]
> +        deadline = time.monotonic() + timeout
> +        while True:
> +            pgrep = cmd(shlex.join(args) if remote else args, host=host,
> +                        fail=False)
> +            if pgrep.ret:
> +                return None
> +            if time.monotonic() > deadline:
> +                return pgrep
> +            time.sleep(0.1)

bit ugly, can we not make sure kperf --kill does the right thing?