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AJvYcCWgZJsCA/rK52vsL8mZABvhPg7oJTmp8Kot3m5Z6u4IzMOUAmOq0ypooAC0SR4ZWAP/kXHXs98LSw==@vger.kernel.org X-Gm-Message-State: AOJu0Yx8BjBa3kNf9a/WEATvbEhP5K1sond2dIgRMDRt/umTfsBStFNg 9MO0v0Kiz4l3Lrf5cSXIhXfM8oaWs8hvNl3LmaW2mY7GkW0pk6cbhbz51LHzA7DvS8R/gyK55vK WnDiyLHHezAz4NZRPF9kbdg== X-Google-Smtp-Source: AGHT+IGrVCmYvgbRZyJY6d84f+llUxgBN0sslSfR3tN174qad1011sAwn0+s/lhjeAWOT5E3i4gR4UE5Ru9TVnP2PA== X-Received: from oabfu21.prod.google.com ([2002:a05:6870:5d95:b0:29d:c6f7:1bb2]) (user=kaleshsingh job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6870:5a9c:b0:29f:f4af:dc34 with SMTP id 586e51a60fabf-29ff4b0889emr667703fac.7.1733798494636; Mon, 09 Dec 2024 18:41:34 -0800 (PST) Date: Mon, 9 Dec 2024 18:41:08 -0800 In-Reply-To: <20241210024119.2488608-1-kaleshsingh@google.com> Precedence: bulk X-Mailing-List: linux-sh@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: <20241210024119.2488608-7-kaleshsingh@google.com> Subject: [PATCH mm-unstable 06/17] mm: csky: 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 Introduce csky 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/csky/abiv1/inc/abi/pgtable-bits.h | 1 + arch/csky/abiv1/mmap.c | 38 ++++++++++++++++++-------- 2 files changed, 27 insertions(+), 12 deletions(-) diff --git a/arch/csky/abiv1/inc/abi/pgtable-bits.h b/arch/csky/abiv1/inc/abi/pgtable-bits.h index ae7a2f76dd42..c346a9fcb522 100644 --- a/arch/csky/abiv1/inc/abi/pgtable-bits.h +++ b/arch/csky/abiv1/inc/abi/pgtable-bits.h @@ -51,5 +51,6 @@ ((offset) << 10)}) #define HAVE_ARCH_UNMAPPED_AREA +#define HAVE_ARCH_MMAP_HINT #endif /* __ASM_CSKY_PGTABLE_BITS_H */ diff --git a/arch/csky/abiv1/mmap.c b/arch/csky/abiv1/mmap.c index 1047865e82a9..184921a73856 100644 --- a/arch/csky/abiv1/mmap.c +++ b/arch/csky/abiv1/mmap.c @@ -13,6 +13,29 @@ ((((addr)+SHMLBA-1)&~(SHMLBA-1)) + \ (((pgoff)<mm; - struct vm_area_struct *vma; int do_align = 0; struct vm_unmapped_area_info info = { .length = len, @@ -55,17 +77,9 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, if (len > TASK_SIZE) return -ENOMEM; - if (addr) { - if (do_align) - addr = COLOUR_ALIGN(addr, pgoff); - else - addr = PAGE_ALIGN(addr); - - vma = find_vma(mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vm_start_gap(vma))) - return addr; - } + addr = arch_mmap_hint(filp, addr, len, pgoff, flags); + if (addr) + return addr; info.align_mask = do_align ? (PAGE_MASK & (SHMLBA - 1)) : 0; return vm_unmapped_area(&info);