linux-kernel - [PATCH] SAMPLES: kprobe_example: Make it print something on ARM.

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Date:	Wed, 4 Feb 2015 02:56:25 +0000
From:	Wang Long <long.wanglong@...wei.com>
To:	<masami.hiramatsu.pt@...achi.com>, <davem@...emloft.net>,
	<anil.s.keshavamurthy@...el.com>, <ananth@...ibm.com>
CC:	<linux-kernel@...r.kernel.org>, <peifeiyue@...wei.com>,
	<long.wanglong@...wei.com>, <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH] SAMPLES: kprobe_example: Make it print something on ARM.

This KProbes example is a little useless if it doesn't print anything.
For ARM print similar messages to those produced on x86 and PPC.

Signed-off-by: Wang Long <long.wanglong@...wei.com>
---
 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 366db1a..eba9f1a 100644
--- a/samples/kprobes/kprobe_example.c
+++ b/samples/kprobes/kprobe_example.c
@@ -42,6 +42,11 @@ static int handler_pre(struct kprobe *p, struct pt_regs *regs)
 			" ex1 = 0x%lx\n",
 		p->addr, regs->pc, regs->ex1);
 #endif
+#ifdef CONFIG_ARM
+	printk(KERN_INFO "pre_handler: p->addr = 0x%p, ARM_pc = 0x%lx,"
+			" ARM_cpsr = 0x%lx\n",
+		p->addr, regs->ARM_pc, regs->ARM_cpsr);
+#endif
 
 	/* A dump_stack() here will give a stack backtrace */
 	return 0;
@@ -67,6 +72,10 @@ static void handler_post(struct kprobe *p, struct pt_regs *regs,
 	printk(KERN_INFO "post_handler: p->addr = 0x%p, ex1 = 0x%lx\n",
 		p->addr, regs->ex1);
 #endif
+#ifdef CONFIG_ARM
+	printk(KERN_INFO "post_handler: p->addr = 0x%p, ARM_cpsr = 0x%lx\n",
+		p->addr, regs->ARM_cpsr);
+#endif
 }
 
 /*
-- 
1.8.3.4

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