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 at gmail.com>
Cc: Andrew Morton <akpm at linux-foundation.org>
Cc: Thomas Gleixner <tglx at linutronix.de>
---
lib/smp_processor_id.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/lib/smp_processor_id.c b/lib/smp_processor_id.c
index 835cc6df2776..85925aaa4fff 100644
--- a/lib/smp_processor_id.c
+++ b/lib/smp_processor_id.c
@@ -5,7 +5,6 @@
* DEBUG_PREEMPT variant of smp_processor_id().
*/
#include <linux/export.h>
-#include <linux/kallsyms.h>
#include <linux/sched.h>
notrace static unsigned int check_preemption_disabled(const char *what1,
@@ -43,7 +42,7 @@ notrace static unsigned int check_preemption_disabled(const char *what1,
printk(KERN_ERR "BUG: using %s%s() in preemptible [%08x] code: %s/%d\n",
what1, what2, preempt_count() - 1, current->comm, current->pid);
- print_symbol("caller is %s\n", (long)__builtin_return_address(0));
+ printk("caller is %pS\n", __builtin_return_address(0));
dump_stack();
out_enable:
--
2.15.1
