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uml: tidy IRQ code

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Some tidying of the irq code before introducing irq stacks.  Mostly
style fixes, but the timer handler calls the timer code directly
rather than going through the generic sig_handler_common_skas.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike 2007-05-10 22:22:32 -07:00 committed by Linus Torvalds
parent e1a79c400a
commit 2ea5bc5e5b
4 changed files with 13 additions and 18 deletions
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11
arch/um/kernel/init_task.c
View File

@ -46,14 +46,3 @@ void unprotect_stack(unsigned long stack)
{
os_protect_memory((void *) stack, THREAD_SIZE, 1, 1, 0);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/

4
arch/um/kernel/irq.c
View File

@ -1,4 +1,4 @@
/*
/*
* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
* Derived (i.e. mostly copied) from arch/i386/kernel/irq.c:
@ -53,7 +53,7 @@ int show_interrupts(struct seq_file *p, void *v)
if (i < NR_IRQS) {
spin_lock_irqsave(&irq_desc[i].lock, flags);
action = irq_desc[i].action;
if (!action)
if (!action)
goto skip;
seq_printf(p, "%3d: ",i);
#ifndef CONFIG_SMP

10
arch/um/os-Linux/signal.c
View File

@ -61,15 +61,19 @@ void sig_handler(int sig, struct sigcontext *sc)
static void real_alarm_handler(int sig, struct sigcontext *sc)
{
union uml_pt_regs regs;
if(sig == SIGALRM)
switch_timers(0);
CHOOSE_MODE_PROC(sig_handler_common_tt, sig_handler_common_skas,
sig, sc);
if(sc != NULL)
copy_sc(&regs, sc);
regs.skas.is_user = 0;
unblock_signals();
timer_handler(sig, &regs);
if(sig == SIGALRM)
switch_timers(1);
}
void alarm_handler(int sig, struct sigcontext *sc)

6
arch/um/os-Linux/skas/process.c
View File

@ -288,7 +288,8 @@ int start_userspace(unsigned long stub_stack)
void userspace(union uml_pt_regs *regs)
{
int err, status, op, pid = userspace_pid[0];
int local_using_sysemu; /*To prevent races if using_sysemu changes under us.*/
/* To prevent races if using_sysemu changes under us.*/
int local_using_sysemu;
while(1){
restore_registers(pid, regs);
@ -296,7 +297,8 @@ void userspace(union uml_pt_regs *regs)
/* Now we set local_using_sysemu to be used for one loop */
local_using_sysemu = get_using_sysemu();
op = SELECT_PTRACE_OPERATION(local_using_sysemu, singlestepping(NULL));
op = SELECT_PTRACE_OPERATION(local_using_sysemu,
singlestepping(NULL));
err = ptrace(op, pid, 0, 0);
if(err)