[10/13] sysfs: do not use print_symbol()

Message ID 20171211125025.2270-11-sergey.senozhatsky@gmail.com
State New
Headers show
Series
  • replace print_symbol() with printk()-s
Related show

Commit Message

Sergey Senozhatsky Dec. 11, 2017, 12:50 p.m.
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@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/sysfs/file.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

Patch

diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 39c75a86c67f..bfcbe486d385 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -12,7 +12,6 @@ 
 
 #include <linux/module.h>
 #include <linux/kobject.h>
-#include <linux/kallsyms.h>
 #include <linux/slab.h>
 #include <linux/list.h>
 #include <linux/mutex.h>
@@ -70,8 +69,8 @@  static int sysfs_kf_seq_show(struct seq_file *sf, void *v)
 	 * indicate truncated result or overflow in normal use cases.
 	 */
 	if (count >= (ssize_t)PAGE_SIZE) {
-		print_symbol("fill_read_buffer: %s returned bad count\n",
-			(unsigned long)ops->show);
+		printk("fill_read_buffer: %pS returned bad count\n",
+				ops->show);
 		/* Try to struggle along */
 		count = PAGE_SIZE - 1;
 	}