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AJvYcCUxvHKbImyMK5nAb7FgVvH2+Xb89EBCEjxEj3SAXm9tzrc3nOv6jyHC9FzMopWs1IOzvhQDCiyujg==@kvack.org X-Gm-Message-State: AOJu0Yxt7N9AItl5IDsmafZ/qeOHRqfrYdsIGL3+LWdt4Y+/Wu7uLvAB f6Osm7qxj9j4L1NsYrgJ+AFlOqzAhL7vxIef7ckoCdtVMQZNZp/29mpZ4dJ9wwrvpmO+J5Yrgq2 mbfnRdBSVOWR8isMgL0srUg== X-Google-Smtp-Source: AGHT+IF4fNavDkLG8tRoFUmw2gnTJz71oU9t6WKhM2RNFmEQvjdeJ2dIL8s2CnxPdes2eHu66I58PC2AE4yum4CFsw== X-Received: from pgbdp11.prod.google.com ([2002:a05:6a02:f0b:b0:7fd:4c8f:e6a1]) (user=kaleshsingh job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:258a:b0:1e1:a829:bfb6 with SMTP id adf61e73a8af0-1e1cea52239mr1772079637.3.1733959695421; Wed, 11 Dec 2024 15:28:15 -0800 (PST) Date: Wed, 11 Dec 2024 15:27:47 -0800 In-Reply-To: <20241211232754.1583023-1-kaleshsingh@google.com> Mime-Version: 1.0 References: <20241211232754.1583023-1-kaleshsingh@google.com> X-Mailer: git-send-email 2.47.0.338.g60cca15819-goog Message-ID: <20241211232754.1583023-10-kaleshsingh@google.com> Subject: [PATCH mm-unstable v2 09/16] mm: parisc: Introduce arch_align_mmap_hint() From: Kalesh Singh To: akpm@linux-foundation.org, vbabka@suse.cz, yang@os.amperecomputing.com, riel@surriel.com, david@redhat.com, minchan@kernel.org, jyescas@google.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-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: B161E180004 X-Stat-Signature: znsfogm51g1imhzy73k7m5hwqtc3oj8o X-Rspam-User: X-HE-Tag: 1733959693-21920 X-HE-Meta: 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 A2+JZ5T1 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.165514, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Introduce parisc arch_mmap_hint() and define HAVE_ARCH_MMAP_HINT. This is a preparatory patch, no functional change is introduced. Signed-off-by: Kalesh Singh --- Changes in v2: - MAP_FIXED case is also handled in arch_mmap_hint() since this is just a special case of the hint addr being "enforced", per Yang Shi. - Consolidate error handling in arch_mmap_hint(). arch/parisc/include/asm/pgtable.h | 1 + arch/parisc/kernel/sys_parisc.c | 53 +++++++++++++++++-------------- 2 files changed, 31 insertions(+), 23 deletions(-) diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h index babf65751e81..73987357c78e 100644 --- a/arch/parisc/include/asm/pgtable.h +++ b/arch/parisc/include/asm/pgtable.h @@ -505,6 +505,7 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, #define HAVE_ARCH_UNMAPPED_AREA #define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN +#define HAVE_ARCH_MMAP_HINT #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c index f852fe274abe..c1702d481e33 100644 --- a/arch/parisc/kernel/sys_parisc.c +++ b/arch/parisc/kernel/sys_parisc.c @@ -96,24 +96,16 @@ unsigned long mmap_upper_limit(struct rlimit *rlim_stack) enum mmap_allocation_direction {UP, DOWN}; -static unsigned long arch_get_unmapped_area_common(struct file *filp, - unsigned long addr, unsigned long len, unsigned long pgoff, - unsigned long flags, enum mmap_allocation_direction dir) +unsigned long arch_mmap_hint(struct file *filp, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags) { - struct mm_struct *mm = current->mm; - struct vm_area_struct *vma, *prev; unsigned long filp_pgoff; - int do_color_align; - struct vm_unmapped_area_info info = { - .length = len - }; + bool do_color_align; if (unlikely(len > TASK_SIZE)) return -ENOMEM; - do_color_align = 0; - if (filp || (flags & MAP_SHARED)) - do_color_align = 1; filp_pgoff = GET_FILP_PGOFF(filp); if (flags & MAP_FIXED) { @@ -128,18 +120,33 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, return addr; } - if (addr) { - if (do_color_align) - addr = COLOR_ALIGN(addr, filp_pgoff, pgoff); - else - addr = PAGE_ALIGN(addr); + do_color_align = filp || (flags & MAP_SHARED); - vma = find_vma_prev(mm, addr, &prev); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vm_start_gap(vma)) && - (!prev || addr >= vm_end_gap(prev))) - return addr; - } + if (do_color_align) + addr = COLOR_ALIGN(addr, filp_pgoff, pgoff); + else + addr = PAGE_ALIGN(addr); + + return generic_mmap_hint(filp, addr, len, pgoff, flags); +} + +static unsigned long arch_get_unmapped_area_common(struct file *filp, + unsigned long addr, unsigned long len, unsigned long pgoff, + unsigned long flags, enum mmap_allocation_direction dir) +{ + struct mm_struct *mm = current->mm; + unsigned long filp_pgoff; + bool do_color_align; + struct vm_unmapped_area_info info = { + .length = len + }; + + addr = arch_mmap_hint(filp, addr, len, pgoff, flags); + if (addr) + return addr; + + filp_pgoff = GET_FILP_PGOFF(filp); + do_color_align = filp || (flags & MAP_SHARED); info.align_mask = do_color_align ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0; info.align_offset = shared_align_offset(filp_pgoff, pgoff); -- 2.47.0.338.g60cca15819-goog