[PATCH 04/13] ia64: do not use print_symbol()

[Sergey Senozhatsky]

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.

Additionally ia64_do_show_stack() had extra buffer [128
bytes on stack], which we also can drop now.

Signed-off-by: Sergey Senozhatsky <sergey.senozhat...@gmail.com>
Cc: Tony Luck <tony.l...@intel.com>
Cc: Fenghua Yu <fenghua...@intel.com>
---
 arch/ia64/kernel/process.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index dda0082056b3..968b5f33e725 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -13,7 +13,6 @@
 #include <linux/pm.h>
 #include <linux/elf.h>
 #include <linux/errno.h>
-#include <linux/kallsyms.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/slab.h>
@@ -69,7 +68,6 @@ void
 ia64_do_show_stack (struct unw_frame_info *info, void *arg)
 {
        unsigned long ip, sp, bsp;
-       char buf[128];                  /* don't make it so big that it 
overflows the stack! */
 
        printk("\nCall Trace:\n");
        do {
@@ -79,11 +77,9 @@ ia64_do_show_stack (struct unw_frame_info *info, void *arg)
 
                unw_get_sp(info, &sp);
                unw_get_bsp(info, &bsp);
-               snprintf(buf, sizeof(buf),
-                        " [<%016lx>] %%s\n"
+               printk(" [<%016lx>] %pS\n"
                         "                                sp=%016lx 
bsp=%016lx\n",
-                        ip, sp, bsp);
-               print_symbol(buf, ip);
+                        ip, (void *)ip, sp, bsp);
        } while (unw_unwind(info) >= 0);
 }
 
@@ -111,7 +107,7 @@ show_regs (struct pt_regs *regs)
        printk("psr : %016lx ifs : %016lx ip  : [<%016lx>]    %s (%s)\n",
               regs->cr_ipsr, regs->cr_ifs, ip, print_tainted(),
               init_utsname()->release);
-       print_symbol("ip is at %s\n", ip);
+       printk("ip is at %pS\n", (void *)ip);
        printk("unat: %016lx pfs : %016lx rsc : %016lx\n",
               regs->ar_unat, regs->ar_pfs, regs->ar_rsc);
        printk("rnat: %016lx bsps: %016lx pr  : %016lx\n",
-- 
2.15.1