x86: traps_xx: modify do_trap

if (cond) block -> if (!cond) goto end_of_block

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Acked-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 28 insertions, 28 deletions

diff --git a/arch/x86/kernel/traps_64.c b/arch/x86/kernel/traps_64.c
index 019a06fcfbdc..1c2d533fe7ff 100644
--- a/arch/x86/kernel/traps_64.c
+++ b/arch/x86/kernel/traps_64.c
@@ -630,38 +630,38 @@ do_trap(int trapnr, int signr, char *str, struct pt_regs *regs,
 {
         struct task_struct *tsk = current;
 
-        if (user_mode(regs)) {
-                /*
-                 * We want error_code and trap_no set for userspace
-                 * faults and kernelspace faults which result in
-                 * die(), but not kernelspace faults which are fixed
-                 * up.  die() gives the process no chance to handle
-                 * the signal and notice the kernel fault information,
-                 * so that won't result in polluting the information
-                 * about previously queued, but not yet delivered,
-                 * faults.  See also do_general_protection below.
-                 */
-                tsk->thread.error_code = error_code;
-                tsk->thread.trap_no = trapnr;
-
-                if (show_unhandled_signals && unhandled_signal(tsk, signr) &&
-                    printk_ratelimit()) {
-                        printk(KERN_INFO
-                               "%s[%d] trap %s ip:%lx sp:%lx error:%lx",
-                               tsk->comm, tsk->pid, str,
-                               regs->ip, regs->sp, error_code);
-                        print_vma_addr(" in ", regs->ip);
-                        printk("\n");
-                }
+        if (!user_mode(regs))
+                goto kernel_trap;
 
-                if (info)
-                        force_sig_info(signr, info, tsk);
-                else
-                        force_sig(signr, tsk);
-                return;
+        /*
+         * We want error_code and trap_no set for userspace faults and
+         * kernelspace faults which result in die(), but not
+         * kernelspace faults which are fixed up.  die() gives the
+         * process no chance to handle the signal and notice the
+         * kernel fault information, so that won't result in polluting
+         * the information about previously queued, but not yet
+         * delivered, faults.  See also do_general_protection below.
+         */
+        tsk->thread.error_code = error_code;
+        tsk->thread.trap_no = trapnr;
+
+        if (show_unhandled_signals && unhandled_signal(tsk, signr) &&
+            printk_ratelimit()) {
+                printk(KERN_INFO
+                       "%s[%d] trap %s ip:%lx sp:%lx error:%lx",
+                       tsk->comm, tsk->pid, str,
+                       regs->ip, regs->sp, error_code);
+                print_vma_addr(" in ", regs->ip);
+                printk("\n");
         }
 
+        if (info)
+                force_sig_info(signr, info, tsk);
+        else
+                force_sig(signr, tsk);
+        return;
 
+kernel_trap:
         if (!fixup_exception(regs)) {
                 tsk->thread.error_code = error_code;
                 tsk->thread.trap_no = trapnr;