From mboxrd@z Thu Jan 1 00:00:00 1970 From: lauraa@codeaurora.org (Laura Abbott) Date: Tue, 12 Nov 2013 14:27:32 -0800 Subject: [RFC PATCHv2 4/4] mm/vmalloc.c: Treat the entire kernel virtual space as vmalloc In-Reply-To: <1384295252-31778-1-git-send-email-lauraa@codeaurora.org> References: <1384295252-31778-1-git-send-email-lauraa@codeaurora.org> Message-ID: <1384295252-31778-5-git-send-email-lauraa@codeaurora.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org With CONFIG_ENABLE_VMALLOC_SAVINGS, all lowmem is tracked in vmalloc. This means that all the kernel virtual address space can be treated as part of the vmalloc region. Allow vm areas to be allocated from the full kernel address range. Signed-off-by: Laura Abbott Signed-off-by: Neeti Desai --- mm/vmalloc.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 2ec9ac7..31644b6 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -1394,16 +1394,27 @@ struct vm_struct *__get_vm_area_caller(unsigned long size, unsigned long flags, */ struct vm_struct *get_vm_area(unsigned long size, unsigned long flags) { +#ifdef CONFIG_ENABLE_VMALLOC_SAVING + return __get_vm_area_node(size, 1, flags, PAGE_OFFSET, VMALLOC_END, + NUMA_NO_NODE, GFP_KERNEL, + __builtin_return_address(0)); +#else return __get_vm_area_node(size, 1, flags, VMALLOC_START, VMALLOC_END, NUMA_NO_NODE, GFP_KERNEL, __builtin_return_address(0)); +#endif } struct vm_struct *get_vm_area_caller(unsigned long size, unsigned long flags, const void *caller) { +#ifdef CONFIG_ENABLE_VMALLOC_SAVING + return __get_vm_area_node(size, 1, flags, PAGE_OFFSET, VMALLOC_END, + NUMA_NO_NODE, GFP_KERNEL, caller); +#else return __get_vm_area_node(size, 1, flags, VMALLOC_START, VMALLOC_END, NUMA_NO_NODE, GFP_KERNEL, caller); +#endif } /** -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation