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From: Michal Hocko <mhocko@kernel.org>
To: David Rientjes <rientjes@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Vlastimil Babka <vbabka@suse.cz>,
	Alexey Dobriyan <adobriyan@gmail.com>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	linux-api@vger.kernel.org
Subject: Re: [RFC PATCH] mm, proc: report PR_SET_THP_DISABLE in proc
Date: Wed, 14 Nov 2018 14:23:06 +0100	[thread overview]
Message-ID: <20181114132306.GX23419@dhcp22.suse.cz> (raw)
In-Reply-To: <20181018070031.GW18839@dhcp22.suse.cz>

On Thu 18-10-18 09:00:31, Michal Hocko wrote:
> On Wed 17-10-18 12:59:18, David Rientjes wrote:
> > On Wed, 17 Oct 2018, Michal Hocko wrote:
> > 
> > > Do you know of any other userspace except your usecase? Is there
> > > anything fundamental that would prevent a proper API adoption for you?
> > > 
> > 
> > Yes, it would require us to go back in time and build patched binaries. 
> 
> I read that as there is a fundamental problem to update existing
> binaries. If that is the case then there surely is no way around it
> and another sad page in the screwed up APIs book we provide.
> 
> But I was under impression that the SW stack which actually does the
> monitoring is under your controll. Moreover I was under impression that
> you do not use the current vanilla kernel so there is no need for an
> immediate change on your end. It is trivial to come up with a backward
> compatible way to check for the new flag (if it is not present then
> fallback to vma flags).
> 
> I am sorry for pushing here but if this is just a matter of a _single_
> user which _can_ be fixed with a reasonable effort then I would love to
> see the future api unscrewed.

ping
-- 
Michal Hocko
SUSE Labs

  reply	other threads:[~2018-11-14 13:23 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-24 17:55 [patch] mm, thp: always specify ineligible vmas as nh in smaps David Rientjes
2018-09-24 18:25 ` Vlastimil Babka
2018-09-24 19:17   ` David Rientjes
2018-09-24 19:30     ` [patch v2] " David Rientjes
2018-09-24 19:56       ` Michal Hocko
2018-09-24 20:02         ` Michal Hocko
2018-09-24 20:43           ` Vlastimil Babka
2018-09-25  5:50             ` Michal Hocko
2018-09-25 19:52             ` David Rientjes
2018-09-25 20:29               ` Michal Hocko
2018-09-25 21:45                 ` David Rientjes
2018-09-25 22:04                   ` Andrew Morton
2018-09-26  0:55                     ` David Rientjes
2018-09-26  6:06                     ` Michal Hocko
2018-10-02 11:28                       ` [RFC PATCH] mm, proc: report PR_SET_THP_DISABLE in proc Michal Hocko
2018-10-02 20:29                         ` David Rientjes
2018-10-03  7:36                           ` Michal Hocko
2018-10-03 22:51                             ` David Rientjes
2018-10-04  5:58                               ` Michal Hocko
2018-10-04  9:15                                 ` David Rientjes
2018-10-04  9:46                                   ` Michal Hocko
2018-10-04 18:34                                     ` David Rientjes
2018-10-09  8:33                                       ` Michal Hocko
2018-10-15 15:03                                         ` Michal Hocko
2018-10-15 22:25                                           ` David Rientjes
2018-10-16 10:48                                             ` Michal Hocko
2018-10-16 21:24                                               ` David Rientjes
2018-10-17  7:05                                                 ` Michal Hocko
2018-10-17 19:59                                                   ` David Rientjes
2018-10-18  7:00                                                     ` Michal Hocko
2018-11-14 13:23                                                       ` Michal Hocko [this message]
2018-11-14 21:41                                                         ` David Rientjes
2018-11-15  9:02                                                           ` Michal Hocko
2018-11-15  9:22                                                             ` Michal Hocko
2018-11-19 22:05                                                             ` David Rientjes
2018-11-20  7:48                                                               ` Michal Hocko
2018-10-03 17:33                           ` Mike Rapoport
2018-09-25 21:50               ` [patch v3] mm, thp: always specify disabled vmas as nh in smaps David Rientjes
2018-09-26  6:12                 ` Michal Hocko
2018-09-26  7:17                   ` Michal Hocko
2018-09-26  8:40                 ` Vlastimil Babka

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