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>
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 @@
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 @@
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 @@
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 @@
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);
}