[LTP] [PATCH v2] lib: Do not fail a test if oom score cannot be adjusted.

[Li Wang]

 Hi All,

On Thu, Dec 23, 2021 at 9:17 AM xuyang2018.jy@fujitsu.com
<xuyang2018.jy@fujitsu.com> wrote:

> >> Setting value<  0 in /proc/*/oom_score_adj requires CAP_SYS_RESOURCE or
> >> CAP_SYS_ADMIN.
> Here will mislead user.
> Since the default oom_score_adj value is 0, so we can not set a value < 0.
>
> The value of /proc/<pid>/oom_score_adj may be reduced no lower than the
> last value set by a CAP_SYS_RESOURCE process. To reduce the value any
> lower requires CAP_SYS_RESOURCE.

Good to know this, thank you Xu!

>From the man page, CAP_SYS_RESOURCE gives:

"
        CAP_SYS_RESOURCE
              ...
              * set /proc/[pid]/oom_score_adj to a value lower than
the value last set by a process with CAP_SYS_RESOURCE.
"

I will send a V3 base on Petr and Cyril's work to speed up merging this fix.

-- 
Regards,
Li Wang