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authorPaul Mundt <lethal@linux-sh.org>2009-10-26 10:48:18 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-10-26 10:48:18 +0900
commit6253195b671b98a4e5da5d39c2df9f8f257bcea1 (patch)
tree3b7ca1d8ef5d9c50a77abf1d1cf5b2b5aa243284 /arch/sh
parent15893fb565921507da80e500d85bb2575989bb57 (diff)
parent60339fad5c68c9c533cd14e67194ff8f727c41d9 (diff)
Merge branch 'sh/stable-updates'
Conflicts: arch/sh/kernel/dwarf.c
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/kernel/dwarf.c22
-rw-r--r--arch/sh/kernel/irq.c3
-rw-r--r--arch/sh/kernel/sh_ksyms_32.c14
3 files changed, 38 insertions, 1 deletions
diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c
index 4d8c7bd149df..6c9d0c10f2be 100644
--- a/arch/sh/kernel/dwarf.c
+++ b/arch/sh/kernel/dwarf.c
@@ -21,6 +21,7 @@
#include <linux/mempool.h>
#include <linux/mm.h>
#include <linux/elf.h>
+#include <linux/ftrace.h>
#include <asm/dwarf.h>
#include <asm/unwinder.h>
#include <asm/sections.h>
@@ -569,6 +570,27 @@ struct dwarf_frame * dwarf_unwind_stack(unsigned long pc,
if (!pc && !prev)
pc = (unsigned long)current_text_addr();
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+ /*
+ * If our stack has been patched by the function graph tracer
+ * then we might see the address of return_to_handler() where we
+ * expected to find the real return address.
+ */
+ if (pc == (unsigned long)&return_to_handler) {
+ int index = current->curr_ret_stack;
+
+ /*
+ * We currently have no way of tracking how many
+ * return_to_handler()'s we've seen. If there is more
+ * than one patched return address on our stack,
+ * complain loudly.
+ */
+ WARN_ON(index > 0);
+
+ pc = current->ret_stack[index].ret;
+ }
+#endif
+
frame = mempool_alloc(dwarf_frame_pool, GFP_ATOMIC);
if (!frame) {
printk(KERN_ERR "Unable to allocate a dwarf frame\n");
diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index 11c289ecc090..7aa89fac1f81 100644
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -11,6 +11,7 @@
#include <linux/module.h>
#include <linux/kernel_stat.h>
#include <linux/seq_file.h>
+#include <linux/ftrace.h>
#include <asm/processor.h>
#include <asm/machvec.h>
#include <asm/uaccess.h>
@@ -114,7 +115,7 @@ static union irq_ctx *hardirq_ctx[NR_CPUS] __read_mostly;
static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
#endif
-asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs)
+asmlinkage __irq_entry int do_IRQ(unsigned int irq, struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
#ifdef CONFIG_IRQSTACKS
diff --git a/arch/sh/kernel/sh_ksyms_32.c b/arch/sh/kernel/sh_ksyms_32.c
index 8663c7a49ac7..509830da6f30 100644
--- a/arch/sh/kernel/sh_ksyms_32.c
+++ b/arch/sh/kernel/sh_ksyms_32.c
@@ -85,6 +85,20 @@ DECLARE_EXPORT(__movstr_i4_even);
DECLARE_EXPORT(__movstr_i4_odd);
DECLARE_EXPORT(__movstrSI12_i4);
DECLARE_EXPORT(__movmem);
+DECLARE_EXPORT(__movmemSI8);
+DECLARE_EXPORT(__movmemSI12);
+DECLARE_EXPORT(__movmemSI16);
+DECLARE_EXPORT(__movmemSI20);
+DECLARE_EXPORT(__movmemSI24);
+DECLARE_EXPORT(__movmemSI28);
+DECLARE_EXPORT(__movmemSI32);
+DECLARE_EXPORT(__movmemSI36);
+DECLARE_EXPORT(__movmemSI40);
+DECLARE_EXPORT(__movmemSI44);
+DECLARE_EXPORT(__movmemSI48);
+DECLARE_EXPORT(__movmemSI52);
+DECLARE_EXPORT(__movmemSI56);
+DECLARE_EXPORT(__movmemSI60);
DECLARE_EXPORT(__movmem_i4_even);
DECLARE_EXPORT(__movmem_i4_odd);
DECLARE_EXPORT(__movmemSI12_i4);