linux-kernel - Re: [for-next][PATCH 08/18] parisc: function_graph: Simplify with function_graph

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Message-ID: <20181123183415.GB1917@sasha-vm>
Date:   Fri, 23 Nov 2018 13:34:15 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Helge Deller <deller@....de>, linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "James E.J. Bottomley" <jejb@...isc-linux.org>,
        linux-parisc@...r.kernel.org, stable@...nel.org,
        stable@...r.kernel.org
Subject: Re: [for-next][PATCH 08/18] parisc: function_graph: Simplify with
 function_graph_entry()

On Fri, Nov 23, 2018 at 12:12:53PM -0500, Steven Rostedt wrote:
>On Fri, 23 Nov 2018 10:06:05 +0100
>Helge Deller <deller@....de> wrote:
>
>
>> > How should we proceed with this patch?
>>
>> My suggestion, although I didn't looked too much on it:
>> Apply it to v4.9 and higher only.
>> I think I started fixing trace functionality on parisc around 4.6,
>> which is probably why applying it fails on v4.4 and v3.x
>
>The problem is, if you backport the generic patches, it will completely
>break any arch that isn't updated. This also includes the archs that
>are no longer supported upstream, as they were not changed to handle
>the generic updates either.

Does this mean that someone (Steve) will send a backport of this to all
relevant stable trees? Right now it looks like the series will randomly
apply on a mix of trees, which can't be good.

--
Thanks,
Sasha