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AJvYcCUV9YgeL5H12auCd5d/Wi4lrxd1fYLXvgGKYLSX1raUmm3noMeXxNBGaxdE4LubCyMfSaNnjWQqbTSW1W4=@vger.kernel.org X-Gm-Message-State: AOJu0Yw5/EgtoxhRXdFWpPfBEHd5ti27nz/Dc4Kd+vUbETzuyBHGnmoG QXx6l+LEUW5E/laf65Xlp7ybpBfzbQv6nJfidmqRVGzsF4IMeTLAzGqJlOMoTZP3WHVESqCkNbu BqVmJ6KUBiLXkX1sDDQ1urw== X-Google-Smtp-Source: AGHT+IH7F6srMqCW64XkYJ4oxpvOqe9MgKa694plvhzavfksbdoDji5OgmDgGGH75PkB/XQatr5z5MeghIRL5RnGbg== X-Received: from pjbqc18.prod.google.com ([2002:a17:90b:2892:b0:2ee:4826:cae3]) (user=kaleshsingh job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:50:b0:2ee:c797:e27f with SMTP id 98e67ed59e1d1-2ef6ab296e5mr20079147a91.36.1733798503563; Mon, 09 Dec 2024 18:41:43 -0800 (PST) Date: Mon, 9 Dec 2024 18:41:13 -0800 In-Reply-To: <20241210024119.2488608-1-kaleshsingh@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241210024119.2488608-1-kaleshsingh@google.com> X-Mailer: git-send-email 2.47.0.338.g60cca15819-goog Message-ID: <20241210024119.2488608-12-kaleshsingh@google.com> Subject: [PATCH mm-unstable 11/17] mm: sh: Introduce arch_mmap_hint() From: Kalesh Singh To: akpm@linux-foundation.org, vbabka@suse.cz, yang@os.amperecomputing.com, riel@surriel.com, david@redhat.com Cc: linux@armlinux.org.uk, tsbogend@alpha.franken.de, James.Bottomley@HansenPartnership.com, ysato@users.sourceforge.jp, dalias@libc.org, glaubitz@physik.fu-berlin.de, davem@davemloft.net, andreas@gaisler.com, tglx@linutronix.de, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, chris@zankel.net, jcmvbkbc@gmail.com, bhelgaas@google.com, jason.andryuk@amd.com, leitao@debian.org, linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-mm@kvack.org, kernel-team@android.com, android-mm@google.com, Kalesh Singh Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Introduce sh arch_mmap_hint() and define HAVE_ARCH_MMAP_HINT. This is a preparatory patch, no functional change is introduced. Signed-off-by: Kalesh Singh --- arch/sh/include/asm/pgtable.h | 1 + arch/sh/mm/mmap.c | 48 +++++++++++++++++++---------------- 2 files changed, 27 insertions(+), 22 deletions(-) diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h index 729f5c6225fb..072dbe038808 100644 --- a/arch/sh/include/asm/pgtable.h +++ b/arch/sh/include/asm/pgtable.h @@ -149,5 +149,6 @@ static inline bool pte_access_permitted(pte_t pte, bool= write) /* arch/sh/mm/mmap.c */ #define HAVE_ARCH_UNMAPPED_AREA #define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN +#define HAVE_ARCH_MMAP_HINT =20 #endif /* __ASM_SH_PGTABLE_H */ diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c index c442734d9b0c..5c96055dd5f5 100644 --- a/arch/sh/mm/mmap.c +++ b/arch/sh/mm/mmap.c @@ -51,6 +51,26 @@ static inline unsigned long COLOUR_ALIGN(unsigned long a= ddr, return base + off; } =20 +unsigned long arch_mmap_hint(struct file *filp, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags) +{ + int do_color_align =3D 0; + + if (!addr) + return 0; + + if (filp || (flags & MAP_SHARED)) + do_color_align =3D 1; + + if (do_color_align) + addr =3D COLOUR_ALIGN(addr, pgoff); + else + addr =3D PAGE_ALIGN(addr); + + return generic_mmap_hint(filp, addr, len, pgoff, flags); +} + unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags, vm_flags_t vm_flags) @@ -77,17 +97,9 @@ unsigned long arch_get_unmapped_area(struct file *filp, = unsigned long addr, if (filp || (flags & MAP_SHARED)) do_colour_align =3D 1; =20 - if (addr) { - if (do_colour_align) - addr =3D COLOUR_ALIGN(addr, pgoff); - else - addr =3D PAGE_ALIGN(addr); - - vma =3D find_vma(mm, addr); - if (TASK_SIZE - len >=3D addr && - (!vma || addr + len <=3D vm_start_gap(vma))) - return addr; - } + addr =3D arch_mmap_hint(filp, addr, len, pgoff, flags); + if (addr) + return addr; =20 info.length =3D len; info.low_limit =3D TASK_UNMAPPED_BASE; @@ -126,17 +138,9 @@ arch_get_unmapped_area_topdown(struct file *filp, cons= t unsigned long addr0, do_colour_align =3D 1; =20 /* requesting a specific address */ - if (addr) { - if (do_colour_align) - addr =3D COLOUR_ALIGN(addr, pgoff); - else - addr =3D PAGE_ALIGN(addr); - - vma =3D find_vma(mm, addr); - if (TASK_SIZE - len >=3D addr && - (!vma || addr + len <=3D vm_start_gap(vma))) - return addr; - } + addr =3D arch_mmap_hint(filp, addr, len, pgoff, flags); + if (addr) + return addr; =20 info.flags =3D VM_UNMAPPED_AREA_TOPDOWN; info.length =3D len; --=20 2.47.0.338.g60cca15819-goog