openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

x86: clean up comment style in arch/x86/kernel/traps.c 

Impact: cleanup

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-12-26 09:20:22 +01:00
parent c656d9ca48
commit bd8b96dfc2
1 changed files with 17 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
arch/x86/kernel/traps.c
View File

@ -292,8 +292,10 @@ dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code)
tsk->thread.error_code = error_code; tsk->thread.error_code = error_code;
tsk->thread.trap_no = 8; tsk->thread.trap_no = 8;
/* This is always a kernel trap and never fixable (and thus must /*
never return). */ * This is always a kernel trap and never fixable (and thus must
* never return).
*/
for (;;) for (;;)
die(str, regs, error_code); die(str, regs, error_code);
} }
@ -524,9 +526,11 @@ dotraplinkage void __kprobes do_int3(struct pt_regs *regs, long error_code)
} }
#ifdef CONFIG_X86_64 #ifdef CONFIG_X86_64
/* Help handler running on IST stack to switch back to user stack /*
for scheduling or signal handling. The actual stack switch is done in * Help handler running on IST stack to switch back to user stack
entry.S */ * for scheduling or signal handling. The actual stack switch is done in
* entry.S
*/
asmlinkage __kprobes struct pt_regs *sync_regs(struct pt_regs *eregs) asmlinkage __kprobes struct pt_regs *sync_regs(struct pt_regs *eregs)
{ {
struct pt_regs *regs = eregs; struct pt_regs *regs = eregs;
@ -536,8 +540,10 @@ asmlinkage __kprobes struct pt_regs *sync_regs(struct pt_regs *eregs)
/* Exception from user space */ /* Exception from user space */
else if (user_mode(eregs)) else if (user_mode(eregs))
regs = task_pt_regs(current); regs = task_pt_regs(current);
/* Exception from kernel and interrupts are enabled. Move to /*
kernel process stack. */ * Exception from kernel and interrupts are enabled. Move to
* kernel process stack.
*/
else if (eregs->flags & X86_EFLAGS_IF) else if (eregs->flags & X86_EFLAGS_IF)
regs = (struct pt_regs *)(eregs->sp -= sizeof(struct pt_regs)); regs = (struct pt_regs *)(eregs->sp -= sizeof(struct pt_regs));
if (eregs != regs) if (eregs != regs)
@ -707,8 +713,10 @@ void math_error(void __user *ip)
} else if (err & 0x020) { /* Precision */ } else if (err & 0x020) { /* Precision */
info.si_code = FPE_FLTRES; info.si_code = FPE_FLTRES;
} else { } else {
/* If we're using IRQ 13, or supposedly even some trap 16 /*
implementations, it's possible we get a spurious trap... */ * If we're using IRQ 13, or supposedly even some trap 16
* implementations, it's possible we get a spurious trap...
*/
return; /* Spurious trap, no error */ return; /* Spurious trap, no error */
} }
force_sig_info(SIGFPE, &info, task); force_sig_info(SIGFPE, &info, task);