kprobes: Add arm64 case in kprobe example module

Add info prints in sample kprobe handlers for ARM64

Signed-off-by: Sandeepa Prabhu <sandeepa.s.prabhu@gmail.com>
Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/samples/kprobes/kprobe_example.c b/samples/kprobes/kprobe_example.c
index ed0ca0c072427faeedaae38a0e21531a18d91db4..f3b61b4ee09cf45429f23a05c3aff4dc72950fff 100644 (file)
--- a/samples/kprobes/kprobe_example.c
+++ b/samples/kprobes/kprobe_example.c
@@ -46,6 +46,11 @@ static int handler_pre(struct kprobe *p, struct pt_regs *regs)
                        " ex1 = 0x%lx\n",
                p->symbol_name, p->addr, regs->pc, regs->ex1);
 #endif
+#ifdef CONFIG_ARM64
+       pr_info("<%s> pre_handler: p->addr = 0x%p, pc = 0x%lx,"
+                       " pstate = 0x%lx\n",
+               p->symbol_name, p->addr, (long)regs->pc, (long)regs->pstate);
+#endif
 
        /* A dump_stack() here will give a stack backtrace */
        return 0;
@@ -71,6 +76,10 @@ static void handler_post(struct kprobe *p, struct pt_regs *regs,
        printk(KERN_INFO "<%s> post_handler: p->addr = 0x%p, ex1 = 0x%lx\n",
                p->symbol_name, p->addr, regs->ex1);
 #endif
+#ifdef CONFIG_ARM64
+       pr_info("<%s> post_handler: p->addr = 0x%p, pstate = 0x%lx\n",
+               p->symbol_name, p->addr, (long)regs->pstate);
+#endif
 }
 
 /*