Uprobe: Additional argument arch_uprobe to uprobe_write_opcode()

Add addition argument 'arch_uprobe' to uprobe_write_opcode().
We need this in later set of patches.

Link: http://lkml.kernel.org/r/20180809041856.1547-3-ravi.bangoria@linux.ibm.comReviewed-by: NSong Liu <songliubraving@fb.com>
Acked-by: NSrikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: NRavi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: NSteven Rostedt (VMware) <rostedt@goodmis.org>

arch/arm/probes/uprobes/core.c

@@ -32,7 +32,7 @@ bool is_swbp_insn(uprobe_opcode_t *insn)
 int set_swbp(struct arch_uprobe *auprobe, struct mm_struct *mm,
 	     unsigned long vaddr)
 {
-	return uprobe_write_opcode(mm, vaddr,
+	return uprobe_write_opcode(auprobe, mm, vaddr,
 		   __opcode_to_mem_arm(auprobe->bpinsn));
 }
 

arch/mips/kernel/uprobes.c

@@ -224,7 +224,7 @@ unsigned long arch_uretprobe_hijack_return_addr(
 int __weak set_swbp(struct arch_uprobe *auprobe, struct mm_struct *mm,
 	unsigned long vaddr)
 {
-	return uprobe_write_opcode(mm, vaddr, UPROBE_SWBP_INSN);
+	return uprobe_write_opcode(auprobe, mm, vaddr, UPROBE_SWBP_INSN);
 }
 
 void arch_uprobe_copy_ixol(struct page *page, unsigned long vaddr,

include/linux/uprobes.h

@@ -121,7 +121,7 @@ extern bool is_swbp_insn(uprobe_opcode_t *insn);
 extern bool is_trap_insn(uprobe_opcode_t *insn);
 extern unsigned long uprobe_get_swbp_addr(struct pt_regs *regs);
 extern unsigned long uprobe_get_trap_addr(struct pt_regs *regs);
-extern int uprobe_write_opcode(struct mm_struct *mm, unsigned long vaddr, uprobe_opcode_t);
+extern int uprobe_write_opcode(struct arch_uprobe *auprobe, struct mm_struct *mm, unsigned long vaddr, uprobe_opcode_t);
 extern int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *uc);
 extern int uprobe_apply(struct inode *inode, loff_t offset, struct uprobe_consumer *uc, bool);
 extern void uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *uc);

kernel/events/uprobes.c

@@ -299,8 +299,8 @@ static int verify_opcode(struct page *page, unsigned long vaddr, uprobe_opcode_t
  * Called with mm->mmap_sem held for write.
  * Return 0 (success) or a negative errno.
  */
-int uprobe_write_opcode(struct mm_struct *mm, unsigned long vaddr,
-			uprobe_opcode_t opcode)
+int uprobe_write_opcode(struct arch_uprobe *auprobe, struct mm_struct *mm,
+			unsigned long vaddr, uprobe_opcode_t opcode)
 {
 	struct page *old_page, *new_page;
 	struct vm_area_struct *vma;
@@ -351,7 +351,7 @@ int uprobe_write_opcode(struct mm_struct *mm, unsigned long vaddr,
  */
 int __weak set_swbp(struct arch_uprobe *auprobe, struct mm_struct *mm, unsigned long vaddr)
 {
-	return uprobe_write_opcode(mm, vaddr, UPROBE_SWBP_INSN);
+	return uprobe_write_opcode(auprobe, mm, vaddr, UPROBE_SWBP_INSN);
 }
 
 /**
@@ -366,7 +366,8 @@ int __weak set_swbp(struct arch_uprobe *auprobe, struct mm_struct *mm, unsigned
 int __weak
 set_orig_insn(struct arch_uprobe *auprobe, struct mm_struct *mm, unsigned long vaddr)
 {
-	return uprobe_write_opcode(mm, vaddr, *(uprobe_opcode_t *)&auprobe->insn);
+	return uprobe_write_opcode(auprobe, mm, vaddr,
+			*(uprobe_opcode_t *)&auprobe->insn);
 }
 
 static struct uprobe *get_uprobe(struct uprobe *uprobe)