[LTP] [PATCH v3 1/3] lib: add functions to adjust oom score

[Cyril Hrubis]

Hi!
> So, I will push (the improved) code like below, after getting
> Petr and you ack again:
> 
> +static void set_oom_score_adj(pid_t pid, int value)
> +{
> +       int val;
> +       char score_path[64];
> +
> +       if (access("/proc/self/oom_score_adj", F_OK) == -1) {
> +               tst_res(TINFO, "Warning: oom_score_adj does not exist,
> +                               skipping the adjustement");

I'm not sure about the "Warning:" in this message, I would just dully
informed the user that the interface is not available.

> +               return;`
> +       }
> +
> +       if (pid == 0) {
> +               sprintf(score_path, "/proc/self/oom_score_adj");
> +       } else {
> +               sprintf(score_path, "/proc/%d/oom_score_adj", pid);
> +               if (access(score_path, F_OK) == -1)
> +                       tst_brk(TBROK, "%s does not exist, please
> check if PID is valid", score_path);
> +       }
> +
> +       FILE_PRINTF(score_path, "%d", value);
> +       FILE_SCANF(score_path, "%d", &val);
> +
> +       if (val != value) {
> +               if (value < 0) {
> +                       tst_res(TWARN, "'%s' cannot be set to %i, are
> you root?",
> +                               score_path, value);
> +                       return
> +               }
> +               tst_brk(TBROK, "oom_score_adj = %d, but expect %d.",
> val, value);
> +       }
> +}

Anyways this version looks good to me:

Reviewed-by: Cyril Hrubis <chrubis@suse.cz>

-- 
Cyril Hrubis
chrubis@suse.cz