On Tue, 10 Nov 2020, Sebastian Andrzej Siewior wrote:
> `oldtrace' is set for kernels prior 2.6.18. Remove "support" for them.
>
> The alternative code (for new kernels) issues
> prctl(0, [01]);
>
> which is not valid the kernel returns an error. I have no idea what its
> purpose is, remove it.
>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
> ---
> src/signaltest/signaltest.c | 29 -----------------------------
> 1 file changed, 29 deletions(-)
>
> diff --git a/src/signaltest/signaltest.c b/src/signaltest/signaltest.c
> index 1cc3236a8f377..aceb714d3e9d3 100644
> --- a/src/signaltest/signaltest.c
> +++ b/src/signaltest/signaltest.c
> @@ -62,7 +62,6 @@ struct thread_stat {
>
> static int shutdown;
> static int tracelimit;
> -static int oldtrace;
>
>
> /*
> @@ -105,13 +104,6 @@ void *signalthread(void *param)
>
> stat->threadstarted++;
>
> - if (tracelimit) {
> - if (oldtrace)
> - gettimeofday(0, (struct timezone *)1);
> - else
> - prctl(0, 1);
> - }
> -
> clock_gettime(CLOCK_MONOTONIC, &before);
>
> while (!shutdown) {
> @@ -152,10 +144,6 @@ void *signalthread(void *param)
>
> if (!stopped && tracelimit && (diff > tracelimit)) {
> stopped++;
> - if (oldtrace)
> - gettimeofday(0, 0);
> - else
> - prctl(0, 0);
> shutdown++;
> }
> stat->act = diff;
> @@ -260,21 +248,6 @@ static void process_options(int argc, char *argv[])
> display_help(error);
> }
>
> -static void check_kernel(void)
> -{
> - size_t len;
> - char ver[256];
> - int fd, maj, min, sub;
> -
> - fd = open("/proc/version", O_RDONLY, 0666);
> - len = read(fd, ver, 255);
> - close(fd);
> - ver[len-1] = 0x0;
> - sscanf(ver, "Linux version %d.%d.%d", &maj, &min, &sub);
> - if (maj == 2 && min == 6 && sub < 18)
> - oldtrace = 1;
> -}
> -
> static void sighand(int sig)
> {
> shutdown = 1;
> @@ -323,8 +296,6 @@ int main(int argc, char **argv)
> goto out;
> }
>
> - check_kernel();
> -
> sigemptyset(&sigset);
> sigaddset(&sigset, signum);
> sigprocmask(SIG_BLOCK, &sigset, NULL);
> --
> 2.29.2
>
>
Signed-off-by: John Kacur <jkacur@xxxxxxxxxx>
