diff options
author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-02-22 16:19:14 (GMT) |
---|---|---|
committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-03-11 06:10:14 (GMT) |
commit | 1cdab55d8a8313f77a95fb8ca966dc4334f8e810 (patch) | |
tree | 09649768514553e9c25d1a5a53a5cd567d0e138d /arch/powerpc | |
parent | 16962e7ce1dce29e1e92d231ac7d6844d7385d54 (diff) | |
download | linux-fsl-qoriq-1cdab55d8a8313f77a95fb8ca966dc4334f8e810.tar.xz |
powerpc: Wire up /proc/vmallocinfo to our ioremap()
This adds the necessary bits and pieces to powerpc implementation of
ioremap to benefit from caller tracking in /proc/vmallocinfo, at least
for ioremap's done after mem init as the older ones aren't tracked.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r-- | arch/powerpc/include/asm/io.h | 6 | ||||
-rw-r--r-- | arch/powerpc/include/asm/machdep.h | 2 | ||||
-rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 14 | ||||
-rw-r--r-- | arch/powerpc/mm/pgtable_64.c | 25 | ||||
-rw-r--r-- | arch/powerpc/platforms/cell/io-workarounds.c | 4 | ||||
-rw-r--r-- | arch/powerpc/platforms/iseries/setup.c | 2 |
6 files changed, 38 insertions, 15 deletions
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h index 494cd8b..001f2f1 100644 --- a/arch/powerpc/include/asm/io.h +++ b/arch/powerpc/include/asm/io.h @@ -632,6 +632,9 @@ static inline void iosync(void) * ioremap_flags and cannot be hooked (but can be used by a hook on one * of the previous ones) * + * * __ioremap_caller is the same as above but takes an explicit caller + * reference rather than using __builtin_return_address(0) + * * * __iounmap, is the low level implementation used by iounmap and cannot * be hooked (but can be used by a hook on iounmap) * @@ -646,6 +649,9 @@ extern void iounmap(volatile void __iomem *addr); extern void __iomem *__ioremap(phys_addr_t, unsigned long size, unsigned long flags); +extern void __iomem *__ioremap_caller(phys_addr_t, unsigned long size, + unsigned long flags, void *caller); + extern void __iounmap(volatile void __iomem *addr); extern void __iomem * __ioremap_at(phys_addr_t pa, void *ea, diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h index 6c34a0d..0efdb1d 100644 --- a/arch/powerpc/include/asm/machdep.h +++ b/arch/powerpc/include/asm/machdep.h @@ -90,7 +90,7 @@ struct machdep_calls { void (*tce_flush)(struct iommu_table *tbl); void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size, - unsigned long flags); + unsigned long flags, void *caller); void (*iounmap)(volatile void __iomem *token); #ifdef CONFIG_PM diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 58bcaeb..0f8c437 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -129,7 +129,8 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address) void __iomem * ioremap(phys_addr_t addr, unsigned long size) { - return __ioremap(addr, size, _PAGE_NO_CACHE | _PAGE_GUARDED); + return __ioremap_caller(addr, size, _PAGE_NO_CACHE | _PAGE_GUARDED, + __builtin_return_address(0)); } EXPORT_SYMBOL(ioremap); @@ -143,13 +144,20 @@ ioremap_flags(phys_addr_t addr, unsigned long size, unsigned long flags) /* we don't want to let _PAGE_USER and _PAGE_EXEC leak out */ flags &= ~(_PAGE_USER | _PAGE_EXEC | _PAGE_HWEXEC); - return __ioremap(addr, size, flags); + return __ioremap_caller(addr, size, flags, __builtin_return_address(0)); } EXPORT_SYMBOL(ioremap_flags); void __iomem * __ioremap(phys_addr_t addr, unsigned long size, unsigned long flags) { + return __ioremap_caller(addr, size, flags, __builtin_return_address(0)); +} + +void __iomem * +__ioremap_caller(phys_addr_t addr, unsigned long size, unsigned long flags, + void *caller) +{ unsigned long v, i; phys_addr_t p; int err; @@ -212,7 +220,7 @@ __ioremap(phys_addr_t addr, unsigned long size, unsigned long flags) if (mem_init_done) { struct vm_struct *area; - area = get_vm_area(size, VM_IOREMAP); + area = get_vm_area_caller(size, VM_IOREMAP, caller); if (area == 0) return NULL; v = (unsigned long) area->addr; diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 365e61a..bfa7db6 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -144,8 +144,8 @@ void __iounmap_at(void *ea, unsigned long size) unmap_kernel_range((unsigned long)ea, size); } -void __iomem * __ioremap(phys_addr_t addr, unsigned long size, - unsigned long flags) +void __iomem * __ioremap_caller(phys_addr_t addr, unsigned long size, + unsigned long flags, void *caller) { phys_addr_t paligned; void __iomem *ret; @@ -168,8 +168,9 @@ void __iomem * __ioremap(phys_addr_t addr, unsigned long size, if (mem_init_done) { struct vm_struct *area; - area = __get_vm_area(size, VM_IOREMAP, - ioremap_bot, IOREMAP_END); + area = __get_vm_area_caller(size, VM_IOREMAP, + ioremap_bot, IOREMAP_END, + caller); if (area == NULL) return NULL; ret = __ioremap_at(paligned, area->addr, size, flags); @@ -186,19 +187,27 @@ void __iomem * __ioremap(phys_addr_t addr, unsigned long size, return ret; } +void __iomem * __ioremap(phys_addr_t addr, unsigned long size, + unsigned long flags) +{ + return __ioremap_caller(addr, size, flags, __builtin_return_address(0)); +} void __iomem * ioremap(phys_addr_t addr, unsigned long size) { unsigned long flags = _PAGE_NO_CACHE | _PAGE_GUARDED; + void *caller = __builtin_return_address(0); if (ppc_md.ioremap) - return ppc_md.ioremap(addr, size, flags); - return __ioremap(addr, size, flags); + return ppc_md.ioremap(addr, size, flags, caller); + return __ioremap_caller(addr, size, flags, caller); } void __iomem * ioremap_flags(phys_addr_t addr, unsigned long size, unsigned long flags) { + void *caller = __builtin_return_address(0); + /* writeable implies dirty for kernel addresses */ if (flags & _PAGE_RW) flags |= _PAGE_DIRTY; @@ -207,8 +216,8 @@ void __iomem * ioremap_flags(phys_addr_t addr, unsigned long size, flags &= ~(_PAGE_USER | _PAGE_EXEC); if (ppc_md.ioremap) - return ppc_md.ioremap(addr, size, flags); - return __ioremap(addr, size, flags); + return ppc_md.ioremap(addr, size, flags, caller); + return __ioremap_caller(addr, size, flags, caller); } diff --git a/arch/powerpc/platforms/cell/io-workarounds.c b/arch/powerpc/platforms/cell/io-workarounds.c index 059cad6..5c1118e 100644 --- a/arch/powerpc/platforms/cell/io-workarounds.c +++ b/arch/powerpc/platforms/cell/io-workarounds.c @@ -131,10 +131,10 @@ static const struct ppc_pci_io __devinitconst iowa_pci_io = { }; static void __iomem *iowa_ioremap(phys_addr_t addr, unsigned long size, - unsigned long flags) + unsigned long flags, void *caller) { struct iowa_bus *bus; - void __iomem *res = __ioremap(addr, size, flags); + void __iomem *res = __ioremap_caller(addr, size, flags, caller); int busno; bus = iowa_pci_find(0, (unsigned long)addr); diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c index 24519b9..a6cd339 100644 --- a/arch/powerpc/platforms/iseries/setup.c +++ b/arch/powerpc/platforms/iseries/setup.c @@ -617,7 +617,7 @@ static void iseries_dedicated_idle(void) } static void __iomem *iseries_ioremap(phys_addr_t address, unsigned long size, - unsigned long flags) + unsigned long flags, void *caller) { return (void __iomem *)address; } |