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

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Message-ID: <20220510101600.48529d5e@gandalf.local.home>
Date:   Tue, 10 May 2022 10:16:00 -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 Tue, 10 May 2022 07:22:02 +0300
Vasily Averin <vvs@...nvz.org> wrote:

> ... and when  __def_gfpflag_names() traslates them to unsigned long
> 
>        {(unsigned long)GFP_DMA,                "GFP_DMA"},             \
>        {(unsigned long)__GFP_HIGHMEM,          "__GFP_HIGHMEM"},       \
>        {(unsigned long)GFP_DMA32,              "GFP_DMA32"},           \
> 
> ... it leads to sparse warnings bacuse type gfp_t was declared as 'bitwise'

Ah' it's the printing of the flag bits. Got it.

-- Steve