path: root/samples
diff options
authorHuang Shijie <shijie.huang@arm.com>2016-08-03 13:46:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-04 08:50:07 -0400
commit613413143faa3432e436674f1c2e57ad7d290ae1 (patch)
tree6683bb3db61636849a6009db94048fdbfe2d5634 /samples
parent468b88956c3317de6cf2317374faf671f950724b (diff)
samples/kretprobe: 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/1464143083-3877-3-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>
Diffstat (limited to 'samples')
1 files changed, 5 insertions, 7 deletions
diff --git a/samples/kprobes/kretprobe_example.c b/samples/kprobes/kretprobe_example.c
index ebb1d1aed547..adc83e9f59d0 100644
--- a/samples/kprobes/kretprobe_example.c
+++ b/samples/kprobes/kretprobe_example.c
@@ -62,7 +62,7 @@ static int ret_handler(struct kretprobe_instance *ri, struct pt_regs *regs)
now = ktime_get();
delta = ktime_to_ns(ktime_sub(now, data->entry_stamp));
- printk(KERN_INFO "%s returned %d and took %lld ns to execute\n",
+ pr_info("%s returned %d and took %lld ns to execute\n",
func_name, retval, (long long)delta);
return 0;
@@ -82,11 +82,10 @@ static int __init kretprobe_init(void)
my_kretprobe.kp.symbol_name = func_name;
ret = register_kretprobe(&my_kretprobe);
if (ret < 0) {
- printk(KERN_INFO "register_kretprobe failed, returned %d\n",
- ret);
+ pr_err("register_kretprobe failed, returned %d\n", ret);
return -1;
- printk(KERN_INFO "Planted return probe at %s: %p\n",
+ pr_info("Planted return probe at %s: %p\n",
my_kretprobe.kp.symbol_name, my_kretprobe.kp.addr);
return 0;
@@ -94,11 +93,10 @@ static int __init kretprobe_init(void)
static void __exit kretprobe_exit(void)
- printk(KERN_INFO "kretprobe at %p unregistered\n",
- my_kretprobe.kp.addr);
+ pr_info("kretprobe at %p unregistered\n", my_kretprobe.kp.addr);
/* nmissed > 0 suggests that maxactive was set too low. */
- printk(KERN_INFO "Missed probing %d instances of %s\n",
+ pr_info("Missed probing %d instances of %s\n",
my_kretprobe.nmissed, my_kretprobe.kp.symbol_name);