Re: [PATCH] kbuild,bpf: pass make jobs' value to pahole

[Masahiro Yamada]

On Sun, Nov 3, 2024 at 9:04 PM Holger Hoffstätte
<holger@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> On 2024-11-02 11:04, Florian Schmaus wrote:
> > Pass the value of make's -j/--jobs argument to pahole, to avoid out of
> > memory errors and make pahole respect the "jobs" value of make.
> >
> > On systems with little memory but many cores, invoking pahole using -j
> > without argument potentially creates too many pahole instances,
> > causing an out-of-memory situation. Instead, we should pass make's
> > "jobs" value as an argument to pahole's -j, which is likely configured
> > to be (much) lower than the actual core count on such systems.
> >
> > If make was invoked without -j, either via cmdline or MAKEFLAGS, then
> > JOBS will be simply empty, resulting in the existing behavior, as
> > expected.
> >
> > Signed-off-by: Florian Schmaus <flo@xxxxxxxxxxxx>
>
> As discussed on IRC:

Do not do this. Others do not see what was discussed.




I guess the right thing to do is to join the jobserver.

https://www.gnu.org/software/make/manual/html_node/POSIX-Jobserver.html




-- 
Best Regards
Masahiro Yamada