linux-kernel - [PATCH 09/13] drivers: do not use print

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Message-Id: <20171211125025.2270-10-sergey.senozhatsky@gmail.com>
Date:   Mon, 11 Dec 2017 21:50:21 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Salter <msalter@...hat.com>,
        Tony Luck <tony.luck@...el.com>,
        David Howells <dhowells@...hat.com>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Guan Xuetao <gxt@...c.pku.edu.cn>,
        Borislav Petkov <bp@...en8.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Vineet Gupta <vgupta@...opsys.com>,
        Fengguang Wu <fengguang.wu@...el.com>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Petr Mladek <pmladek@...e.com>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-c6x-dev@...ux-c6x.org,
        linux-ia64@...r.kernel.org, linux-am33-list@...hat.com,
        linux-sh@...r.kernel.org, linux-edac@...r.kernel.org,
        x86@...nel.org, linux-snps-arc@...ts.infradead.org,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: [PATCH 09/13] drivers: do not use print_symbol()

print_symbol() uses extra stack space to sprintf() symbol
information and then to feed that buffer to printk()

  char buffer[KSYM_SYMBOL_LEN];

  sprint_symbol(buffer, address);
  printk(fmt, buffer);

Replace print_symbol() with a direct printk("%pS") call.

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/base/core.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index bf45587bcb46..36e20498159b 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -20,7 +20,6 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/genhd.h>
-#include <linux/kallsyms.h>
 #include <linux/mutex.h>
 #include <linux/pm_runtime.h>
 #include <linux/netdevice.h>
@@ -685,8 +684,8 @@ static ssize_t dev_attr_show(struct kobject *kobj, struct attribute *attr,
 	if (dev_attr->show)
 		ret = dev_attr->show(dev, dev_attr, buf);
 	if (ret >= (ssize_t)PAGE_SIZE) {
-		print_symbol("dev_attr_show: %s returned bad count\n",
-				(unsigned long)dev_attr->show);
+		printk("dev_attr_show: %pS returned bad count\n",
+				dev_attr->show);
 	}
 	return ret;
 }
-- 
2.15.1