linux-kernel - [PATCH 5.4 019/240] random: Add and use pr

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Date:   Mon, 20 Jun 2022 14:48:40 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Yangtao Li <tiny.windzz@...il.com>,
        Theodore Tso <tytso@....edu>,
        "Jason A. Donenfeld" <Jason@...c4.com>
Subject: [PATCH 5.4 019/240] random: Add and use pr_fmt()

From: Yangtao Li <tiny.windzz@...il.com>

commit 12cd53aff5ea0359b1dac91fcd9ddc7b9e646588 upstream.

Prefix all printk/pr_<level> messages with "random: " to make the
logging a bit more consistent.

Miscellanea:

o Convert a printks to pr_notice
o Whitespace to align to open parentheses
o Remove embedded "random: " from pr_* as pr_fmt adds it

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
Link: https://lore.kernel.org/r/20190607182517.28266-3-tiny.windzz@gmail.com
Signed-off-by: Theodore Ts'o <tytso@....edu>
Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/char/random.c |   21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -307,6 +307,8 @@
  * Eastlake, Steve Crocker, and Jeff Schiller.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/utsname.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
@@ -738,7 +740,7 @@ retry:
 	}
 
 	if (WARN_ON(entropy_count < 0)) {
-		pr_warn("random: negative entropy/overflow: pool %s count %d\n",
+		pr_warn("negative entropy/overflow: pool %s count %d\n",
 			r->name, entropy_count);
 		entropy_count = 0;
 	} else if (entropy_count > pool_size)
@@ -834,7 +836,7 @@ static void crng_initialize(struct crng_
 		invalidate_batched_entropy();
 		numa_crng_init();
 		crng_init = 2;
-		pr_notice("random: crng done (trusting CPU's manufacturer)\n");
+		pr_notice("crng done (trusting CPU's manufacturer)\n");
 	}
 	crng->init_time = jiffies - CRNG_RESEED_INTERVAL - 1;
 }
@@ -858,14 +860,12 @@ static void crng_finalize_init(struct cr
 	kill_fasync(&fasync, SIGIO, POLL_IN);
 	pr_notice("crng init done\n");
 	if (unseeded_warning.missed) {
-		pr_notice("random: %d get_random_xx warning(s) missed "
-			  "due to ratelimiting\n",
+		pr_notice("%d get_random_xx warning(s) missed due to ratelimiting\n",
 			  unseeded_warning.missed);
 		unseeded_warning.missed = 0;
 	}
 	if (urandom_warning.missed) {
-		pr_notice("random: %d urandom warning(s) missed "
-			  "due to ratelimiting\n",
+		pr_notice("%d urandom warning(s) missed due to ratelimiting\n",
 			  urandom_warning.missed);
 		urandom_warning.missed = 0;
 	}
@@ -948,7 +948,7 @@ static size_t crng_fast_load(const char
 	if (crng_init_cnt >= CRNG_INIT_CNT_THRESH) {
 		invalidate_batched_entropy();
 		crng_init = 1;
-		pr_notice("random: fast init done\n");
+		pr_notice("fast init done\n");
 	}
 	return ret;
 }
@@ -1384,7 +1384,7 @@ retry:
 		ibytes = 0;
 
 	if (WARN_ON(entropy_count < 0)) {
-		pr_warn("random: negative entropy count: pool %s count %d\n",
+		pr_warn("negative entropy count: pool %s count %d\n",
 			r->name, entropy_count);
 		entropy_count = 0;
 	}
@@ -1870,9 +1870,8 @@ urandom_read(struct file *file, char __u
 	if (!crng_ready() && maxwarn > 0) {
 		maxwarn--;
 		if (__ratelimit(&urandom_warning))
-			printk(KERN_NOTICE "random: %s: uninitialized "
-			       "urandom read (%zd bytes read)\n",
-			       current->comm, nbytes);
+			pr_notice("%s: uninitialized urandom read (%zd bytes read)\n",
+				  current->comm, nbytes);
 		spin_lock_irqsave(&primary_crng.lock, flags);
 		crng_init_cnt = 0;
 		spin_unlock_irqrestore(&primary_crng.lock, flags);