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AJvYcCXUIjQpoVYz0xe4CQqo8z0g7W8NJYZQ7pRTUc6LU80GgNSt2ZgyXfj4wYzE33/5sVbPXfA3OntsQZLWVs3KDGA6yGc= X-Gm-Message-State: AOJu0YyWYNbttvxW7c7iRNacUOfEdBNJU1nHt9Ii8CAs1/DKyhTnkHHR VvghB1mQrtkG7XKOrtdXu11+bxLFq5Y1/Ezzu9KLoqfGraIbNuErEkT4eRN2UhQR/HfWSvLA7y+ GsKlqnHUyWYUjey4TOVPSqZVbjeWquvJAIdcp X-Google-Smtp-Source: AGHT+IG6l4h8KgCu1mcr/ZMWQbdEFueKYTFVYNMwYlVMCYSQKnQPu8RzycqvNzeYz47HXL5wboAvOGkSQgCimZvCNdM= X-Received: by 2002:a25:d815:0:b0:dc6:e7f6:254a with SMTP id p21-20020a25d815000000b00dc6e7f6254amr127954ybg.8.1707861532899; Tue, 13 Feb 2024 13:58:52 -0800 (PST) MIME-Version: 1.0 References: <20240212213922.783301-1-surenb@google.com> In-Reply-To: From: Suren Baghdasaryan Date: Tue, 13 Feb 2024 13:58:39 -0800 Message-ID: Subject: Re: [PATCH v3 00/35] Memory allocation profiling To: Michal Hocko Cc: akpm@linux-foundation.org, kent.overstreet@linux.dev, vbabka@suse.cz, hannes@cmpxchg.org, roman.gushchin@linux.dev, mgorman@suse.de, dave@stgolabs.net, willy@infradead.org, liam.howlett@oracle.com, corbet@lwn.net, void@manifault.com, peterz@infradead.org, juri.lelli@redhat.com, catalin.marinas@arm.com, will@kernel.org, arnd@arndb.de, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, x86@kernel.org, peterx@redhat.com, david@redhat.com, axboe@kernel.dk, mcgrof@kernel.org, masahiroy@kernel.org, nathan@kernel.org, dennis@kernel.org, tj@kernel.org, muchun.song@linux.dev, rppt@kernel.org, paulmck@kernel.org, pasha.tatashin@soleen.com, yosryahmed@google.com, yuzhao@google.com, dhowells@redhat.com, hughd@google.com, andreyknvl@gmail.com, keescook@chromium.org, ndesaulniers@google.com, vvvvvv@google.com, gregkh@linuxfoundation.org, ebiggers@google.com, ytcoode@gmail.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, bristot@redhat.com, vschneid@redhat.com, cl@linux.com, penberg@kernel.org, iamjoonsoo.kim@lge.com, 42.hyeyoo@gmail.com, glider@google.com, elver@google.com, dvyukov@google.com, shakeelb@google.com, songmuchun@bytedance.com, jbaron@akamai.com, rientjes@google.com, minchan@google.com, kaleshsingh@google.com, kernel-team@android.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-arch@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, kasan-dev@googlegroups.com, cgroups@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Stat-Signature: k4a93u4ukwzjoa9dch6s996yx38wk9qz X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 1E947180012 X-Rspam-User: X-HE-Tag: 1707861533-254808 X-HE-Meta: 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 +d4z51gw CHaSrtN4s7TziD9roFahDjkYpnux5KY3knrc260AZxGDiPq5iPy+RurIOnG5EDTbM7PsGlb68EjHEDbvcUFiJ2HpXgBiTJH1Dnay+g1VAcdT/0DDZnaXZsnF/Kph/iyTS2plZ1LWRlm/qN8SxDJSWX5JAH8zKq5v975AUUp8FitkvwR6WDD5dMxtRPrYof/W7J1pluSw9lEXqajIXd4Tb0dYO1kMq8nQvRMvL3ZyHwMOvrHGHvcC2ROD9JpGCK3fxRolsZlcvoEF+AmZzMV2ZMw9vqnYqS318BCcEHdDg+jx26+UusSmXTKGvGInbRpLXRx1r0PYzo71RoH77uOp4SxjGPgR4mrWQwUIO5w+E5UbR+Ws= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Feb 13, 2024 at 4:24=E2=80=AFAM Michal Hocko wrot= e: > > On Mon 12-02-24 13:38:46, Suren Baghdasaryan wrote: > [...] > > We're aiming to get this in the next merge window, for 6.9. The feedbac= k > > we've gotten has been that even out of tree this patchset has already > > been useful, and there's a significant amount of other work gated on th= e > > code tagging functionality included in this patchset [2]. > > I suspect it will not come as a surprise that I really dislike the > implementation proposed here. I will not repeat my arguments, I have > done so on several occasions already. > > Anyway, I didn't go as far as to nak it even though I _strongly_ believe > this debugging feature will add a maintenance overhead for a very long > time. I can live with all the downsides of the proposed implementation > _as long as_ there is a wider agreement from the MM community as this is > where the maintenance cost will be payed. So far I have not seen (m)any > acks by MM developers so aiming into the next merge window is more than > little rushed. We tried other previously proposed approaches and all have their downsides without making maintenance much easier. Your position is understandable and I think it's fair. Let's see if others see more benefit than cost here. Thanks, Suren. > > > 81 files changed, 2126 insertions(+), 695 deletions(-) > -- > Michal Hocko > SUSE Labs