linux-kernel - Re: [PATCH] percpu: improve percpu_alloc

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Message-ID: <20220509170605.2eb7637e@gandalf.local.home>
Date:   Mon, 9 May 2022 17:06:05 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Vasily Averin <vvs@...nvz.org>
Cc:     kernel test robot <lkp@...el.com>, Ingo Molnar <mingo@...hat.com>,
        kbuild-all@...ts.01.org, Shakeel Butt <shakeelb@...gle.com>,
        kernel@...nvz.org, linux-kernel@...r.kernel.org,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Vlastimil Babka <vbabka@...e.cz>,
        Michal Hocko <mhocko@...e.com>, cgroups@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Dennis Zhou <dennis@...nel.org>, Tejun Heo <tj@...nel.org>,
        Christoph Lameter <cl@...ux-foundation.org>
Subject: Re: [PATCH] percpu: improve percpu_alloc_percpu event trace

On Sat, 7 May 2022 17:51:16 +0300
Vasily Averin <vvs@...nvz.org> wrote:

> The same messages are generated for any other gfp_t argument in trace events.
> As far as I understand it is not a bug per se,
> but trace macros lacks __force attribute in 'gfp_t'-> 'unsigned long' casts.
> The same thing happens with mode_t and with some other places using __print_flags()
> for __bitwise marked types.

I'm curious as to where the gfp_t to unsigned long is happening in the
macros?

-- Steve