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vmallocinfo: add caller information
Add caller information so that /proc/vmallocinfo shows where the allocation request for a slice of vmalloc memory originated. Results in output like this: 0xffffc20000000000-0xffffc20000801000 8392704 alloc_large_system_hash+0x127/0x246 pages=2048 vmalloc vpages 0xffffc20000801000-0xffffc20000806000 20480 alloc_large_system_hash+0x127/0x246 pages=4 vmalloc 0xffffc20000806000-0xffffc20000c07000 4198400 alloc_large_system_hash+0x127/0x246 pages=1024 vmalloc vpages 0xffffc20000c07000-0xffffc20000c0a000 12288 alloc_large_system_hash+0x127/0x246 pages=2 vmalloc 0xffffc20000c0a000-0xffffc20000c0c000 8192 acpi_os_map_memory+0x13/0x1c phys=cff68000 ioremap 0xffffc20000c0c000-0xffffc20000c0f000 12288 acpi_os_map_memory+0x13/0x1c phys=cff64000 ioremap 0xffffc20000c10000-0xffffc20000c15000 20480 acpi_os_map_memory+0x13/0x1c phys=cff65000 ioremap 0xffffc20000c16000-0xffffc20000c18000 8192 acpi_os_map_memory+0x13/0x1c phys=cff69000 ioremap 0xffffc20000c18000-0xffffc20000c1a000 8192 acpi_os_map_memory+0x13/0x1c phys=fed1f000 ioremap 0xffffc20000c1a000-0xffffc20000c1c000 8192 acpi_os_map_memory+0x13/0x1c phys=cff68000 ioremap 0xffffc20000c1c000-0xffffc20000c1e000 8192 acpi_os_map_memory+0x13/0x1c phys=cff68000 ioremap 0xffffc20000c1e000-0xffffc20000c20000 8192 acpi_os_map_memory+0x13/0x1c phys=cff68000 ioremap 0xffffc20000c20000-0xffffc20000c22000 8192 acpi_os_map_memory+0x13/0x1c phys=cff68000 ioremap 0xffffc20000c22000-0xffffc20000c24000 8192 acpi_os_map_memory+0x13/0x1c phys=cff68000 ioremap 0xffffc20000c24000-0xffffc20000c26000 8192 acpi_os_map_memory+0x13/0x1c phys=e0081000 ioremap 0xffffc20000c26000-0xffffc20000c28000 8192 acpi_os_map_memory+0x13/0x1c phys=e0080000 ioremap 0xffffc20000c28000-0xffffc20000c2d000 20480 alloc_large_system_hash+0x127/0x246 pages=4 vmalloc 0xffffc20000c2d000-0xffffc20000c31000 16384 tcp_init+0xd5/0x31c pages=3 vmalloc 0xffffc20000c31000-0xffffc20000c34000 12288 alloc_large_system_hash+0x127/0x246 pages=2 vmalloc 0xffffc20000c34000-0xffffc20000c36000 8192 init_vdso_vars+0xde/0x1f1 0xffffc20000c36000-0xffffc20000c38000 8192 pci_iomap+0x8a/0xb4 phys=d8e00000 ioremap 0xffffc20000c38000-0xffffc20000c3a000 8192 usb_hcd_pci_probe+0x139/0x295 [usbcore] phys=d8e00000 ioremap 0xffffc20000c3a000-0xffffc20000c3e000 16384 sys_swapon+0x509/0xa15 pages=3 vmalloc 0xffffc20000c40000-0xffffc20000c61000 135168 e1000_probe+0x1c4/0xa32 phys=d8a20000 ioremap 0xffffc20000c61000-0xffffc20000c6a000 36864 _xfs_buf_map_pages+0x8e/0xc0 vmap 0xffffc20000c6a000-0xffffc20000c73000 36864 _xfs_buf_map_pages+0x8e/0xc0 vmap 0xffffc20000c73000-0xffffc20000c7c000 36864 _xfs_buf_map_pages+0x8e/0xc0 vmap 0xffffc20000c7c000-0xffffc20000c7f000 12288 e1000e_setup_tx_resources+0x29/0xbe pages=2 vmalloc 0xffffc20000c80000-0xffffc20001481000 8392704 pci_mmcfg_arch_init+0x90/0x118 phys=e0000000 ioremap 0xffffc20001481000-0xffffc20001682000 2101248 alloc_large_system_hash+0x127/0x246 pages=512 vmalloc 0xffffc20001682000-0xffffc20001e83000 8392704 alloc_large_system_hash+0x127/0x246 pages=2048 vmalloc vpages 0xffffc20001e83000-0xffffc20002204000 3674112 alloc_large_system_hash+0x127/0x246 pages=896 vmalloc vpages 0xffffc20002204000-0xffffc2000220d000 36864 _xfs_buf_map_pages+0x8e/0xc0 vmap 0xffffc2000220d000-0xffffc20002216000 36864 _xfs_buf_map_pages+0x8e/0xc0 vmap 0xffffc20002216000-0xffffc2000221f000 36864 _xfs_buf_map_pages+0x8e/0xc0 vmap 0xffffc2000221f000-0xffffc20002228000 36864 _xfs_buf_map_pages+0x8e/0xc0 vmap 0xffffc20002228000-0xffffc20002231000 36864 _xfs_buf_map_pages+0x8e/0xc0 vmap 0xffffc20002231000-0xffffc20002234000 12288 e1000e_setup_rx_resources+0x35/0x122 pages=2 vmalloc 0xffffc20002240000-0xffffc20002261000 135168 e1000_probe+0x1c4/0xa32 phys=d8a60000 ioremap 0xffffc20002261000-0xffffc2000270c000 4894720 sys_swapon+0x509/0xa15 pages=1194 vmalloc vpages 0xffffffffa0000000-0xffffffffa0022000 139264 module_alloc+0x4f/0x55 pages=33 vmalloc 0xffffffffa0022000-0xffffffffa0029000 28672 module_alloc+0x4f/0x55 pages=6 vmalloc 0xffffffffa002b000-0xffffffffa0034000 36864 module_alloc+0x4f/0x55 pages=8 vmalloc 0xffffffffa0034000-0xffffffffa003d000 36864 module_alloc+0x4f/0x55 pages=8 vmalloc 0xffffffffa003d000-0xffffffffa0049000 49152 module_alloc+0x4f/0x55 pages=11 vmalloc 0xffffffffa0049000-0xffffffffa0050000 28672 module_alloc+0x4f/0x55 pages=6 vmalloc [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Christoph Lameter <clameter@sgi.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Lameter
Linus Torvalds
parent
a10aa57987
commit
2301696932
@ -117,8 +117,8 @@ int ioremap_change_attr(unsigned long vaddr, unsigned long size,
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* have to convert them into an offset in a page-aligned mapping, but the
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* caller shouldn't need to know that small detail.
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*/
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static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size,
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unsigned long prot_val)
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static void __iomem *__ioremap_caller(resource_size_t phys_addr,
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unsigned long size, unsigned long prot_val, void *caller)
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{
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unsigned long pfn, offset, vaddr;
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resource_size_t last_addr;
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@ -212,7 +212,7 @@ static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size,
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/*
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* Ok, go for it..
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*/
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area = get_vm_area(size, VM_IOREMAP);
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area = get_vm_area_caller(size, VM_IOREMAP, caller);
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if (!area)
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return NULL;
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area->phys_addr = phys_addr;
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@ -255,7 +255,8 @@ static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size,
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*/
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void __iomem *ioremap_nocache(resource_size_t phys_addr, unsigned long size)
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{
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return __ioremap(phys_addr, size, _PAGE_CACHE_UC);
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return __ioremap_caller(phys_addr, size, _PAGE_CACHE_UC,
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__builtin_return_address(0));
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}
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EXPORT_SYMBOL(ioremap_nocache);
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@ -272,7 +273,8 @@ EXPORT_SYMBOL(ioremap_nocache);
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void __iomem *ioremap_wc(unsigned long phys_addr, unsigned long size)
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{
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if (pat_wc_enabled)
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return __ioremap(phys_addr, size, _PAGE_CACHE_WC);
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return __ioremap_caller(phys_addr, size, _PAGE_CACHE_WC,
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__builtin_return_address(0));
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else
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return ioremap_nocache(phys_addr, size);
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}
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@ -280,7 +282,8 @@ EXPORT_SYMBOL(ioremap_wc);
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void __iomem *ioremap_cache(resource_size_t phys_addr, unsigned long size)
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{
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return __ioremap(phys_addr, size, _PAGE_CACHE_WB);
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return __ioremap_caller(phys_addr, size, _PAGE_CACHE_WB,
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__builtin_return_address(0));
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}
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EXPORT_SYMBOL(ioremap_cache);
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@ -31,6 +31,7 @@ struct vm_struct {
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struct page **pages;
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unsigned int nr_pages;
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unsigned long phys_addr;
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void *caller;
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};
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/*
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@ -66,6 +67,8 @@ static inline size_t get_vm_area_size(const struct vm_struct *area)
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}
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extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
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extern struct vm_struct *get_vm_area_caller(unsigned long size,
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unsigned long flags, void *caller);
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extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
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unsigned long start, unsigned long end);
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extern struct vm_struct *get_vm_area_node(unsigned long size,
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65
mm/vmalloc.c
65
mm/vmalloc.c
@ -16,6 +16,7 @@
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#include <linux/interrupt.h>
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#include <linux/seq_file.h>
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#include <linux/vmalloc.h>
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#include <linux/kallsyms.h>
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#include <asm/uaccess.h>
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#include <asm/tlbflush.h>
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@ -25,7 +26,7 @@ DEFINE_RWLOCK(vmlist_lock);
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struct vm_struct *vmlist;
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static void *__vmalloc_node(unsigned long size, gfp_t gfp_mask, pgprot_t prot,
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int node);
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int node, void *caller);
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static void vunmap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end)
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{
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@ -204,9 +205,9 @@ unsigned long vmalloc_to_pfn(const void *vmalloc_addr)
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}
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EXPORT_SYMBOL(vmalloc_to_pfn);
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static struct vm_struct *__get_vm_area_node(unsigned long size, unsigned long flags,
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unsigned long start, unsigned long end,
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int node, gfp_t gfp_mask)
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static struct vm_struct *
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__get_vm_area_node(unsigned long size, unsigned long flags, unsigned long start,
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unsigned long end, int node, gfp_t gfp_mask, void *caller)
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{
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struct vm_struct **p, *tmp, *area;
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unsigned long align = 1;
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@ -269,6 +270,7 @@ found:
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area->pages = NULL;
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area->nr_pages = 0;
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area->phys_addr = 0;
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area->caller = caller;
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write_unlock(&vmlist_lock);
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return area;
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@ -284,7 +286,8 @@ out:
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struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
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unsigned long start, unsigned long end)
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{
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return __get_vm_area_node(size, flags, start, end, -1, GFP_KERNEL);
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return __get_vm_area_node(size, flags, start, end, -1, GFP_KERNEL,
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__builtin_return_address(0));
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}
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EXPORT_SYMBOL_GPL(__get_vm_area);
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@ -299,14 +302,22 @@ EXPORT_SYMBOL_GPL(__get_vm_area);
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*/
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struct vm_struct *get_vm_area(unsigned long size, unsigned long flags)
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{
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return __get_vm_area(size, flags, VMALLOC_START, VMALLOC_END);
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return __get_vm_area_node(size, flags, VMALLOC_START, VMALLOC_END,
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-1, GFP_KERNEL, __builtin_return_address(0));
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}
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struct vm_struct *get_vm_area_caller(unsigned long size, unsigned long flags,
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void *caller)
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{
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return __get_vm_area_node(size, flags, VMALLOC_START, VMALLOC_END,
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-1, GFP_KERNEL, caller);
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}
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struct vm_struct *get_vm_area_node(unsigned long size, unsigned long flags,
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int node, gfp_t gfp_mask)
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{
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return __get_vm_area_node(size, flags, VMALLOC_START, VMALLOC_END, node,
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gfp_mask);
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gfp_mask, __builtin_return_address(0));
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}
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/* Caller must hold vmlist_lock */
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@ -455,9 +466,11 @@ void *vmap(struct page **pages, unsigned int count,
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if (count > num_physpages)
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return NULL;
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area = get_vm_area((count << PAGE_SHIFT), flags);
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area = get_vm_area_caller((count << PAGE_SHIFT), flags,
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__builtin_return_address(0));
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if (!area)
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return NULL;
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if (map_vm_area(area, prot, &pages)) {
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vunmap(area->addr);
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return NULL;
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@ -468,7 +481,7 @@ void *vmap(struct page **pages, unsigned int count,
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EXPORT_SYMBOL(vmap);
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static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
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pgprot_t prot, int node)
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pgprot_t prot, int node, void *caller)
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{
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struct page **pages;
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unsigned int nr_pages, array_size, i;
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@ -480,7 +493,7 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
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/* Please note that the recursion is strictly bounded. */
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if (array_size > PAGE_SIZE) {
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pages = __vmalloc_node(array_size, gfp_mask | __GFP_ZERO,
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PAGE_KERNEL, node);
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PAGE_KERNEL, node, caller);
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area->flags |= VM_VPAGES;
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} else {
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pages = kmalloc_node(array_size,
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@ -488,6 +501,7 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
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node);
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}
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area->pages = pages;
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area->caller = caller;
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if (!area->pages) {
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remove_vm_area(area->addr);
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kfree(area);
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@ -521,7 +535,8 @@ fail:
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void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, pgprot_t prot)
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{
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return __vmalloc_area_node(area, gfp_mask, prot, -1);
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return __vmalloc_area_node(area, gfp_mask, prot, -1,
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__builtin_return_address(0));
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}
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/**
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@ -536,7 +551,7 @@ void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask, pgprot_t prot)
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* kernel virtual space, using a pagetable protection of @prot.
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*/
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static void *__vmalloc_node(unsigned long size, gfp_t gfp_mask, pgprot_t prot,
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int node)
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int node, void *caller)
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{
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struct vm_struct *area;
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@ -544,16 +559,19 @@ static void *__vmalloc_node(unsigned long size, gfp_t gfp_mask, pgprot_t prot,
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if (!size || (size >> PAGE_SHIFT) > num_physpages)
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return NULL;
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area = get_vm_area_node(size, VM_ALLOC, node, gfp_mask);
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area = __get_vm_area_node(size, VM_ALLOC, VMALLOC_START, VMALLOC_END,
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node, gfp_mask, caller);
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if (!area)
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return NULL;
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return __vmalloc_area_node(area, gfp_mask, prot, node);
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return __vmalloc_area_node(area, gfp_mask, prot, node, caller);
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}
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void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot)
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{
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return __vmalloc_node(size, gfp_mask, prot, -1);
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return __vmalloc_node(size, gfp_mask, prot, -1,
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__builtin_return_address(0));
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}
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EXPORT_SYMBOL(__vmalloc);
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@ -568,7 +586,8 @@ EXPORT_SYMBOL(__vmalloc);
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*/
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void *vmalloc(unsigned long size)
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{
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return __vmalloc(size, GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL);
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return __vmalloc_node(size, GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL,
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-1, __builtin_return_address(0));
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}
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EXPORT_SYMBOL(vmalloc);
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@ -608,7 +627,8 @@ EXPORT_SYMBOL(vmalloc_user);
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*/
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void *vmalloc_node(unsigned long size, int node)
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{
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return __vmalloc_node(size, GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL, node);
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return __vmalloc_node(size, GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL,
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node, __builtin_return_address(0));
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}
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EXPORT_SYMBOL(vmalloc_node);
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@ -843,7 +863,8 @@ struct vm_struct *alloc_vm_area(size_t size)
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{
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struct vm_struct *area;
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area = get_vm_area(size, VM_IOREMAP);
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area = get_vm_area_caller(size, VM_IOREMAP,
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__builtin_return_address(0));
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if (area == NULL)
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return NULL;
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@ -914,6 +935,14 @@ static int s_show(struct seq_file *m, void *p)
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seq_printf(m, "0x%p-0x%p %7ld",
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v->addr, v->addr + v->size, v->size);
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if (v->caller) {
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char buff[2 * KSYM_NAME_LEN];
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seq_putc(m, ' ');
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sprint_symbol(buff, (unsigned long)v->caller);
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seq_puts(m, buff);
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}
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if (v->nr_pages)
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seq_printf(m, " pages=%d", v->nr_pages);
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