SAMPLES: kprobe_example: Make it print something on MIPS.

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

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
To: ananth@in.ibm.com
To: anil.s.keshavamurthy@intel.com
To: davem@davemloft.net
To: masami.hiramatsu.pt@hitachi.com
Cc: linux-kernel@vger.kernel.org
Cc: hschauhan@nulltrace.org
Patchwork: https://patchwork.linux-mips.org/patch/1528/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/samples/kprobes/kprobe_example.c b/samples/kprobes/kprobe_example.c
index a681998a871c..ebf5e0c368ea 100644
--- a/samples/kprobes/kprobe_example.c
+++ b/samples/kprobes/kprobe_example.c
@@ -32,6 +32,11 @@ static int handler_pre(struct kprobe *p, struct pt_regs *regs)
                         " msr = 0x%lx\n",
                 p->addr, regs->nip, regs->msr);
 #endif
+#ifdef CONFIG_MIPS
+        printk(KERN_INFO "pre_handler: p->addr = 0x%p, epc = 0x%lx,"
+                        " status = 0x%lx\n",
+                p->addr, regs->cp0_epc, regs->cp0_status);
+#endif
 
         /* A dump_stack() here will give a stack backtrace */
         return 0;
@@ -49,6 +54,10 @@ static void handler_post(struct kprobe *p, struct pt_regs *regs,
         printk(KERN_INFO "post_handler: p->addr = 0x%p, msr = 0x%lx\n",
                 p->addr, regs->msr);
 #endif
+#ifdef CONFIG_MIPS
+        printk(KERN_INFO "post_handler: p->addr = 0x%p, status = 0x%lx\n",
+                p->addr, regs->cp0_status);
+#endif
 }
 
 /*