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AJvYcCWh4PHCKGDPgFrRoXL2tLpaedv1qJmj2oWS6893TS2C5YDdzcO3P8SnZaSW6FSP/fM63JBIeeGy5mDoUL0uLauvm08= X-Gm-Message-State: AOJu0YxwvB4UoaubDwOtOko2nTe9FI+TMSrOK1M4h7hPQVHeqLGh4e6D A/0RI4YOMofBHdZWDMp9lLurslKMVgmd7DCBtuOectZccHaoyL6MiS/Bu36jOxS9opiDHaoHXF2 DBHAQGcW1s1qPRZia5YMsEwDZXD6gHytVPZMJzQ== X-Google-Smtp-Source: AGHT+IEQ/4e3Xdlw5o+oGBoYc/qjPodJ1x+HDfCTQwbUcL2+yeysXxIOfH8cuC7q3IN5+SY5krebRZTNRqtrnD1+EdY= X-Received: by 2002:a05:6870:9722:b0:22e:8ca0:36ba with SMTP id 586e51a60fabf-24172bd7029mr15691437fac.22.1715702217977; Tue, 14 May 2024 08:56:57 -0700 (PDT) MIME-Version: 1.0 References: <20240514153532.3622371-1-surenb@google.com> In-Reply-To: <20240514153532.3622371-1-surenb@google.com> From: Pasha Tatashin Date: Tue, 14 May 2024 09:56:20 -0600 Message-ID: Subject: Re: [PATCH 1/1] lib: add version into /proc/allocinfo output To: Suren Baghdasaryan Cc: akpm@linux-foundation.org, kent.overstreet@linux.dev, vbabka@suse.cz, keescook@chromium.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Stat-Signature: ko8qbp5kfowps9ptsacddmse7x3nbh6f X-Rspamd-Queue-Id: 03E0C160025 X-Rspam-User: X-Rspamd-Server: rspam01 X-HE-Tag: 1715702218-471165 X-HE-Meta: U2FsdGVkX1+w9yTAS6SbQBjW33plh1ozNTc1QImW3L0p4afDbThdYAkZS+L4FifTq3743AMVb97R5j8qSPtMlk+GvqMmgpSKBRzk33ZWZTvwzM0kNRJhdjbN4Sn45AirIcjGo+/2qYA4VdVNM0421oNyZatWel1ApoEYc3zLsfi+yuIMnlhIKp4FiUfD5GE6p3U6m1JilnkDxteRFIQvtKETGee6UA8h4kU0FmLteO3KW+8ZhA7s6kuaTRVgDdvxz4DZWjTj8cCtESdnlvdrC1ddxspdJ8IdGUSNS77J6IDVwp9EKwwQPHkaSxMBosvRhAwSh7fRDdSJ3zd6lP4XoX/6j/UjDaMyRiB8SAVNBgbSlHyJw/fIghpccmWzlnQ47HwvB+obM9P5tRR8OLJzeC9PlEEEG6ElLZ7YrQz8JC4CNnbnniXIZYbs3IAkz+DB4OpGY75tqR1D79HzE3AHwmxzA3ZbCN5T6f5puWBOoxp3iIdev9XqxJ105KzX/jdF9SCcvjJnYcEtqv/+ebPl+4AY4quO2bwA+OklxmV5We8sLpAt0r2bDnt4icQy0zee57dZs1kZFfYEGQLvAikEiveiHzt8hRcGMRuFrWotBXqOCg3j/IFtfhOuP4EQi9eWLkvyN51jtgdhSIA3g1bKR6kLG4EDor8C1b7TlzYAQWtIIXOoNq7yz+JR33t58D1nQUVONV865iIR1ug7ujtbAXMdTiQSO+txDSvt/wjzC2I6lLPnMp3RTAOYK4mqEqzibtKURcutdHsd4bN1UbDOWyJs/zyytOnuK1E0CvjCb0C7tStW3/L7mPwYxFvl/vqon7sMuviqfHjnYQlX7/58NiI0pDSAt+WcOUCy993zoz4vI/Cz8jSG3zdu4fH/4jhLdjeDtOkgm9cJvbYoYxMNSkpDKw46/SaI1+KF8focIDHL8XouUuSotNJC2rVnpaMXMGxcWdCg7p0C9T/8aih BNY0lHRr JYKkbRQvGXcgDXVFpfYvekrZwLI3OYwcmJQNegLNO6iabe5PeaykdQHXLvEa2Nud1aYMunjC6etpu8PDvBbCsdTcnSElUwqLy6X5vUoT3lHWQK9G04E77HL+EX3oGS17J71yhk+WyDtse+brehEjaoptbDZ+GVMQ5w+tJP2OkZJ4pedqmFB7qCZ8MWPhorSUDY90x/tScOdnsjnDvpTepZuHzIIKHQ2/QpCILSDYrXZeTPVC6xJP/mqv6VJi+0DEW7+0poO+2xhfFw6K1oBDSDENociJDU2J5YFcKdhoQUImJl7YKgpmMWpfPutbxnwonwG2s6P/gJ87cnO9yyXvUjNYW8Q== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000012, 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, May 14, 2024 at 9:35=E2=80=AFAM Suren Baghdasaryan wrote: > > Add version string at the beginning of /proc/allocinfo to allow later > format changes. Exampe output: > > > head /proc/allocinfo > allocinfo - version: 1.0 > 0 0 init/main.c:1314 func:do_initcalls > 0 0 init/do_mounts.c:353 func:mount_nodev_root > 0 0 init/do_mounts.c:187 func:mount_root_generic > 0 0 init/do_mounts.c:158 func:do_mount_root > 0 0 init/initramfs.c:493 func:unpack_to_rootfs > 0 0 init/initramfs.c:492 func:unpack_to_rootfs > 0 0 init/initramfs.c:491 func:unpack_to_rootfs > 512 1 arch/x86/events/rapl.c:681 func:init_rapl_pmus > 128 1 arch/x86/events/rapl.c:571 func:rapl_cpu_online It would be also useful to add a header line: $ head /proc/allocinfo allocinfo - version: 1.0 # 0 0 init/main.c:1314 func:do_initcalls 0 0 init/do_mounts.c:353 func:mount_nodev_root 0 0 init/do_mounts.c:187 func:mount_root_generic 0 0 init/do_mounts.c:158 func:do_mount_root ... This would be the same as in /proc/slabinfo: $ sudo head /proc/slabinfo slabinfo - version: 2.1 # name : tunables : slabdata pid_3 2730 2730 192 42 2 : tunables 0 0 0 : slabdata 65 65 0 .. Pasha