samples/kprobe: convert the printk to pr_info/pr_err

We prefer to use the pr_* to print out the log now, this patch converts
the printk to pr_info.  In the error path, use the pr_err to replace the
printk.

Link: http://lkml.kernel.org/r/1464143083-3877-1-git-send-email-shijie.huang@arm.com
Signed-off-by: Huang Shijie <shijie.huang@arm.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Steve Capper <steve.capper@arm.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 12 insertions, 17 deletions

diff --git a/samples/kprobes/kprobe_example.c b/samples/kprobes/kprobe_example.c
index f3b61b4ee09c..88b3e2d227ae 100644
--- a/samples/kprobes/kprobe_example.c
+++ b/samples/kprobes/kprobe_example.c
@@ -27,23 +27,19 @@ static struct kprobe kp = {
 static int handler_pre(struct kprobe *p, struct pt_regs *regs)
 {
 #ifdef CONFIG_X86
-        printk(KERN_INFO "<%s> pre_handler: p->addr = 0x%p, ip = %lx,"
-                        " flags = 0x%lx\n",
+        pr_info("<%s> pre_handler: p->addr = 0x%p, ip = %lx, flags = 0x%lx\n",
                 p->symbol_name, p->addr, regs->ip, regs->flags);
 #endif
 #ifdef CONFIG_PPC
-        printk(KERN_INFO "<%s> pre_handler: p->addr = 0x%p, nip = 0x%lx,"
-                        " msr = 0x%lx\n",
+        pr_info("<%s> pre_handler: p->addr = 0x%p, nip = 0x%lx, msr = 0x%lx\n",
                 p->symbol_name, p->addr, regs->nip, regs->msr);
 #endif
 #ifdef CONFIG_MIPS
-        printk(KERN_INFO "<%s> pre_handler: p->addr = 0x%p, epc = 0x%lx,"
-                        " status = 0x%lx\n",
+        pr_info("<%s> pre_handler: p->addr = 0x%p, epc = 0x%lx, status = 0x%lx\n",
                 p->symbol_name, p->addr, regs->cp0_epc, regs->cp0_status);
 #endif
 #ifdef CONFIG_TILEGX
-        printk(KERN_INFO "<%s> pre_handler: p->addr = 0x%p, pc = 0x%lx,"
-                        " ex1 = 0x%lx\n",
+        pr_info("<%s> pre_handler: p->addr = 0x%p, pc = 0x%lx, ex1 = 0x%lx\n",
                 p->symbol_name, p->addr, regs->pc, regs->ex1);
 #endif
 #ifdef CONFIG_ARM64
@@ -61,19 +57,19 @@ static void handler_post(struct kprobe *p, struct pt_regs *regs,
                                 unsigned long flags)
 {
 #ifdef CONFIG_X86
-        printk(KERN_INFO "<%s> post_handler: p->addr = 0x%p, flags = 0x%lx\n",
+        pr_info("<%s> post_handler: p->addr = 0x%p, flags = 0x%lx\n",
                 p->symbol_name, p->addr, regs->flags);
 #endif
 #ifdef CONFIG_PPC
-        printk(KERN_INFO "<%s> post_handler: p->addr = 0x%p, msr = 0x%lx\n",
+        pr_info("<%s> post_handler: p->addr = 0x%p, msr = 0x%lx\n",
                 p->symbol_name, p->addr, regs->msr);
 #endif
 #ifdef CONFIG_MIPS
-        printk(KERN_INFO "<%s> post_handler: p->addr = 0x%p, status = 0x%lx\n",
+        pr_info("<%s> post_handler: p->addr = 0x%p, status = 0x%lx\n",
                 p->symbol_name, p->addr, regs->cp0_status);
 #endif
 #ifdef CONFIG_TILEGX
-        printk(KERN_INFO "<%s> post_handler: p->addr = 0x%p, ex1 = 0x%lx\n",
+        pr_info("<%s> post_handler: p->addr = 0x%p, ex1 = 0x%lx\n",
                 p->symbol_name, p->addr, regs->ex1);
 #endif
 #ifdef CONFIG_ARM64
@@ -89,8 +85,7 @@ static void handler_post(struct kprobe *p, struct pt_regs *regs,
  */
 static int handler_fault(struct kprobe *p, struct pt_regs *regs, int trapnr)
 {
-        printk(KERN_INFO "fault_handler: p->addr = 0x%p, trap #%dn",
-                p->addr, trapnr);
+        pr_info("fault_handler: p->addr = 0x%p, trap #%dn", p->addr, trapnr);
         /* Return 0 because we don't handle the fault. */
         return 0;
 }
@@ -104,17 +99,17 @@ static int __init kprobe_init(void)
 
         ret = register_kprobe(&kp);
         if (ret < 0) {
-                printk(KERN_INFO "register_kprobe failed, returned %d\n", ret);
+                pr_err("register_kprobe failed, returned %d\n", ret);
                 return ret;
         }
-        printk(KERN_INFO "Planted kprobe at %p\n", kp.addr);
+        pr_info("Planted kprobe at %p\n", kp.addr);
         return 0;
 }
 
 static void __exit kprobe_exit(void)
 {
         unregister_kprobe(&kp);
-        printk(KERN_INFO "kprobe at %p unregistered\n", kp.addr);
+        pr_info("kprobe at %p unregistered\n", kp.addr);
 }
 
 module_init(kprobe_init)