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s390: make use of user_mode() macro where possible

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We use the user_mode() helper already at several places but also
have the open coded variant at other places.
Convert the code to always use the helper function.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2012-07-27 10:31:12 +02:00
committed by Martin Schwidefsky
parent 37fe1d73a4
commit 7d25617597
4 changed files with 15 additions and 15 deletions
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16
arch/s390/kernel/traps.c
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@@ -185,7 +185,7 @@ void show_registers(struct pt_regs *regs)
{
char *mode;
mode = (regs->psw.mask & PSW_MASK_PSTATE) ? "User" : "Krnl";
mode = user_mode(regs) ? "User" : "Krnl";
printk("%s PSW : %p %p",
mode, (void *) regs->psw.mask,
(void *) regs->psw.addr);
@@ -225,7 +225,7 @@ void show_regs(struct pt_regs *regs)
(void *) current->thread.ksp);
show_registers(regs);
/* Show stack backtrace if pt_regs is from kernel mode */
if (!(regs->psw.mask & PSW_MASK_PSTATE))
if (!user_mode(regs))
show_trace(NULL, (unsigned long *) regs->gprs[15]);
show_last_breaking_event(regs);
}
@@ -300,7 +300,7 @@ static void __kprobes do_trap(struct pt_regs *regs,
regs->int_code, si_signo) == NOTIFY_STOP)
return;
if (regs->psw.mask & PSW_MASK_PSTATE) {
if (user_mode(regs)) {
info.si_signo = si_signo;
info.si_errno = 0;
info.si_code = si_code;
@@ -341,7 +341,7 @@ void __kprobes do_per_trap(struct pt_regs *regs)
static void default_trap_handler(struct pt_regs *regs)
{
if (regs->psw.mask & PSW_MASK_PSTATE) {
if (user_mode(regs)) {
report_user_fault(regs, SIGSEGV);
do_exit(SIGSEGV);
} else
@@ -410,7 +410,7 @@ static void __kprobes illegal_op(struct pt_regs *regs)
location = get_psw_address(regs);
if (regs->psw.mask & PSW_MASK_PSTATE) {
if (user_mode(regs)) {
if (get_user(*((__u16 *) opcode), (__u16 __user *) location))
return;
if (*((__u16 *) opcode) == S390_BREAKPOINT_U16) {
@@ -478,7 +478,7 @@ void specification_exception(struct pt_regs *regs)
location = (__u16 __user *) get_psw_address(regs);
if (regs->psw.mask & PSW_MASK_PSTATE) {
if (user_mode(regs)) {
get_user(*((__u16 *) opcode), location);
switch (opcode[0]) {
case 0x28: /* LDR Rx,Ry */
@@ -531,7 +531,7 @@ static void data_exception(struct pt_regs *regs)
asm volatile("stfpc %0" : "=m" (current->thread.fp_regs.fpc));
#ifdef CONFIG_MATHEMU
else if (regs->psw.mask & PSW_MASK_PSTATE) {
else if (user_mode(regs)) {
__u8 opcode[6];
get_user(*((__u16 *) opcode), location);
switch (opcode[0]) {
@@ -598,7 +598,7 @@ static void data_exception(struct pt_regs *regs)
static void space_switch_exception(struct pt_regs *regs)
{
/* Set user psw back to home space mode. */
if (regs->psw.mask & PSW_MASK_PSTATE)
if (user_mode(regs))
regs->psw.mask |= PSW_ASC_HOME;
/* Send SIGILL. */
do_trap(regs, SIGILL, ILL_PRVOPC, "space switch event");