linux-kernel - Re: [PATCH] ARM: mm: make use of new memblocks

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Date:   Tue, 19 Mar 2019 23:05:09 +0200
From:   Mike Rapoport <rppt@...ux.ibm.com>
To:     Logan Gunthorpe <logang@...tatee.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Rob Herring <robh@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Kees Cook <keescook@...omium.org>,
        Philip Derrin <philip@....systems>,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        Nicolas Pitre <nicolas.pitre@...aro.org>
Subject: Re: [PATCH] ARM: mm: make use of new memblocks_present() helper

On Tue, Mar 19, 2019 at 02:50:25PM -0600, Logan Gunthorpe wrote:
> 
> 
> On 2019-03-19 2:42 p.m., Mike Rapoport wrote:
> > On Tue, Mar 19, 2019 at 12:13:57PM -0600, Logan Gunthorpe wrote:
> >> Cleanup the arm_memory_present() function seeing it's very
> >> similar to other arches.
> >>
> >> The new memblocks_present() helper checks for node ids which the
> >> arm version did not. However, this is equivalent seeing
> >> HAVE_MEMBLOCK_NODE_MAP should be false in this arch and therefore
> >> memblock_get_region_node() should return 0.
> >>
> >> Signed-off-by: Logan Gunthorpe <logang@...tatee.com>
> >> Cc: Russell King <linux@...linux.org.uk>
> >> Cc: Kees Cook <keescook@...omium.org>
> >> Cc: Philip Derrin <philip@....systems>
> >> Cc: "Steven Rostedt (VMware)" <rostedt@...dmis.org>
> >> Cc: Nicolas Pitre <nicolas.pitre@...aro.org>
> > 
> > Reviewed-by: Mike Rapoport <rppt@...ux.ibm.com>
> > 
> > Strangely, I've got a feeling I've already reviewed such patch from a
> > different person...
> 
> You're probably referring to [1] which was for arm64 and was redundant
> as my patch for that architecture was already picked up by Catalin.

I've found the patch [1] I mentioned, and it was for ARM.

> I was the person who originally introduced memblocks_present() and I'm
> still hoping to get the cleanup patches for the arm and sh arches to be
> picked up.

AFAIK, For ARM you'd need to put it into Russel's patch tracking system [2].

> Thanks,
> 
> Logan
> 
> [1]
> https://lore.kernel.org/lkml/20190210093738.30923-1-peng.fan@nxp.com/T/#u
> 

[1] https://lore.kernel.org/lkml/20190211131602.3294-1-peng.fan@nxp.com
[2] https://www.arm.linux.org.uk/developer/patches/

-- 
Sincerely yours,
Mike.