From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergey Senozhatsky Date: Mon, 11 Dec 2017 12:50:24 +0000 Subject: [PATCH 12/13] lib: do not use print_symbol() Message-Id: <20171211125025.2270-13-sergey.senozhatsky@gmail.com> List-Id: References: <20171211125025.2270-1-sergey.senozhatsky@gmail.com> In-Reply-To: <20171211125025.2270-1-sergey.senozhatsky@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org 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 Cc: Andrew Morton Cc: Thomas Gleixner --- 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 -#include #include 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