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Subject[PATCH v15 10/10] kprobes: Add arm64 case in kprobe example module
Date
From: Sandeepa Prabhu <sandeepa.s.prabhu@gmail.com>

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>
---
samples/kprobes/kprobe_example.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/samples/kprobes/kprobe_example.c b/samples/kprobes/kprobe_example.c
index ed0ca0c..f3b61b4 100644
--- 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
}

/*
--
2.5.0
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