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Fri, 04 Apr 2025 05:44:15 -0700 (PDT) Received: from archie.me ([103.124.138.155]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-af9bc34e91asm2769802a12.33.2025.04.04.05.44.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Apr 2025 05:44:14 -0700 (PDT) Received: by archie.me (Postfix, from userid 1000) id AF9E9420A6E2; Fri, 04 Apr 2025 19:44:11 +0700 (WIB) Date: Fri, 4 Apr 2025 19:44:11 +0700 From: Bagas Sanjaya To: "Pankaj Raghav (Samsung)" , Andrew Morton , Jonathan Corbet Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, willy@infradead.org, David Hildenbrand , da.gomez@kernel.org, mcgrof@kernel.org, gost.dev@samsung.com, linux-doc@vger.kernel.org, Pankaj Raghav Subject: Re: [PATCH v2 2/2] docs: clarify THP admin guide about (File|Shmem)PmdMapped and ShmemHugePage Message-ID: References: <20250404100159.27086-1-kernel@pankajraghav.com> <20250404100159.27086-3-kernel@pankajraghav.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="q2Ttcq6upHDrBmCH" Content-Disposition: inline In-Reply-To: <20250404100159.27086-3-kernel@pankajraghav.com> --q2Ttcq6upHDrBmCH Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Apr 04, 2025 at 12:01:59PM +0200, Pankaj Raghav (Samsung) wrote: > -The number of file transparent huge pages mapped to userspace is availab= le > -by reading ShmemPmdMapped and ShmemHugePages fields in ``/proc/meminfo``. > -To identify what applications are mapping file transparent huge pages, it > -is necessary to read ``/proc/PID/smaps`` and count the FilePmdMapped fie= lds > -for each mapping. > +The number of PMD-sized transparent huge pages currently used by "In similar fashion, the number ..." > +tmpfs/shmem is available by reading the ShmemHugePages field > +in ``/proc/meminfo``. The number of these huge pages that are mapped to = userspace > +is available by reading ShmemPmdMapped field in ``proc/meminfo``. To ide= ntify > +what applications are mapping these huge pages, it is necessary to read > +``/proc/PID/smaps`` and count the ShmemPmdMapped fields for each mapping. > =20 Thanks. --=20 An old man doll... just what I always wanted! - Clara --q2Ttcq6upHDrBmCH Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSSYQ6Cy7oyFNCHrUH2uYlJVVFOowUCZ+/UFgAKCRD2uYlJVVFO o8iyAP4y2cPlJ9PmjvYd9bQbQj/LpLzDJjMeX0hgGkJTM/RWigEAqWWio4oMoXd6 sLnP2GA/32m2Yy6fmUBZJDqtcS9Thww= =dIDg -----END PGP SIGNATURE----- --q2Ttcq6upHDrBmCH--