From mboxrd@z Thu Jan 1 00:00:00 1970 From: ard.biesheuvel@linaro.org (Ard Biesheuvel) Date: Mon, 22 Feb 2016 11:00:37 +0100 Subject: [PATCH 1/3] arm64: ptdump: use static initializers for vmemmap region boundaries In-Reply-To: <1456135239-3607-1-git-send-email-ard.biesheuvel@linaro.org> References: <1456135239-3607-1-git-send-email-ard.biesheuvel@linaro.org> Message-ID: <1456135239-3607-2-git-send-email-ard.biesheuvel@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org There is no need to initialize the vmemmap region boundaries dynamically, since they are compile time constants. So just add these constants to the global struct initializer, and drop the dynamic assignment and related code. Signed-off-by: Ard Biesheuvel --- arch/arm64/mm/dump.c | 47 +++++--------------- 1 file changed, 12 insertions(+), 35 deletions(-) diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c index 6be918478f85..eadcb70e733c 100644 --- a/arch/arm64/mm/dump.c +++ b/arch/arm64/mm/dump.c @@ -34,37 +34,21 @@ struct addr_marker { const char *name; }; -enum address_markers_idx { - MODULES_START_NR = 0, - MODULES_END_NR, - VMALLOC_START_NR, - VMALLOC_END_NR, -#ifdef CONFIG_SPARSEMEM_VMEMMAP - VMEMMAP_START_NR, - VMEMMAP_END_NR, -#endif - FIXADDR_START_NR, - FIXADDR_END_NR, - PCI_START_NR, - PCI_END_NR, - KERNEL_SPACE_NR, -}; - static struct addr_marker address_markers[] = { - { MODULES_VADDR, "Modules start" }, - { MODULES_END, "Modules end" }, - { VMALLOC_START, "vmalloc() Area" }, - { VMALLOC_END, "vmalloc() End" }, + { MODULES_VADDR, "Modules start" }, + { MODULES_END, "Modules end" }, + { VMALLOC_START, "vmalloc() Area" }, + { VMALLOC_END, "vmalloc() End" }, #ifdef CONFIG_SPARSEMEM_VMEMMAP - { 0, "vmemmap start" }, - { 0, "vmemmap end" }, + { (u64)vmemmap, "vmemmap start" }, + { (u64)vmemmap + VMEMMAP_SIZE, "vmemmap end" }, #endif - { FIXADDR_START, "Fixmap start" }, - { FIXADDR_TOP, "Fixmap end" }, - { PCI_IO_START, "PCI I/O start" }, - { PCI_IO_END, "PCI I/O end" }, - { PAGE_OFFSET, "Linear Mapping" }, - { -1, NULL }, + { FIXADDR_START, "Fixmap start" }, + { FIXADDR_TOP, "Fixmap end" }, + { PCI_IO_START, "PCI I/O start" }, + { PCI_IO_END, "PCI I/O end" }, + { PAGE_OFFSET, "Linear Mapping" }, + { -1, NULL }, }; /* @@ -349,13 +333,6 @@ static int ptdump_init(void) for (j = 0; j < pg_level[i].num; j++) pg_level[i].mask |= pg_level[i].bits[j].mask; -#ifdef CONFIG_SPARSEMEM_VMEMMAP - address_markers[VMEMMAP_START_NR].start_address = - (unsigned long)virt_to_page(PAGE_OFFSET); - address_markers[VMEMMAP_END_NR].start_address = - (unsigned long)virt_to_page(high_memory); -#endif - pe = debugfs_create_file("kernel_page_tables", 0400, NULL, NULL, &ptdump_fops); return pe ? 0 : -ENOMEM; -- 2.5.0