[PATCH] x86_64: Add compat_printk and sysctl to turn off compat layer warnings

Sometimes e.g. with crashme the compat layer warnings can be noisy.
Add a way to turn them off by gating all output through compat_printk
that checks a global sysctl. The default is not changed.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86_64/ia32/sys_ia32.c b/arch/x86_64/ia32/sys_ia32.c
index f182b20858e2..ee30557629dc 100644
--- a/arch/x86_64/ia32/sys_ia32.c
+++ b/arch/x86_64/ia32/sys_ia32.c
@@ -514,7 +514,7 @@ int sys32_ni_syscall(int call)
         static char lastcomm[sizeof(me->comm)];
 
         if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) {
-                printk(KERN_INFO "IA32 syscall %d from %s not implemented\n",
+                compat_printk(KERN_INFO "IA32 syscall %d from %s not implemented\n",
                        call, me->comm);
                 strncpy(lastcomm, me->comm, sizeof(lastcomm));
         } 
@@ -916,7 +916,7 @@ long sys32_vm86_warning(void)
         struct task_struct *me = current;
         static char lastcomm[sizeof(me->comm)];
         if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) {
-                printk(KERN_INFO "%s: vm86 mode not supported on 64 bit kernel\n",
+                compat_printk(KERN_INFO "%s: vm86 mode not supported on 64 bit kernel\n",
                        me->comm);
                 strncpy(lastcomm, me->comm, sizeof(lastcomm));
         }