Commit bb1775c9 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'metag-for-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag

Pull Metag architecture changes from James Hogan:
 - Remove unused NUMA definition (SD_NODE_INIT)
 - Refactor signal code to use struct ksignal
 - IRQ migration cleanup to use irq_set_affinity
 - Clean up main Kconfig file a little

* tag 'metag-for-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
  sched: remove unused SCHED_INIT_NODE
  metag: Use get_signal() signal_setup_done()
  metag: Fix METAG Kconfig symbol select ordering
  metag: Use irq_set_affinity instead of homebrewn code
parents 63c95654 2aca46ce
......@@ -9,6 +9,7 @@ config METAG
select HAVE_ARCH_TRACEHOOK
select HAVE_C_RECORDMCOUNT
select HAVE_DEBUG_KMEMLEAK
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_DYNAMIC_FTRACE
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_FUNCTION_TRACER
......@@ -29,7 +30,6 @@ config METAG
select OF
select OF_EARLY_FLATTREE
select SPARSE_IRQ
select HAVE_DEBUG_STACKOVERFLOW
config STACKTRACE_SUPPORT
def_bool y
......
......@@ -3,33 +3,6 @@
#ifdef CONFIG_NUMA
/* sched_domains SD_NODE_INIT for Meta machines */
#define SD_NODE_INIT (struct sched_domain) { \
.parent = NULL, \
.child = NULL, \
.groups = NULL, \
.min_interval = 8, \
.max_interval = 32, \
.busy_factor = 32, \
.imbalance_pct = 125, \
.cache_nice_tries = 2, \
.busy_idx = 3, \
.idle_idx = 2, \
.newidle_idx = 0, \
.wake_idx = 0, \
.forkexec_idx = 0, \
.flags = SD_LOAD_BALANCE \
| SD_BALANCE_FORK \
| SD_BALANCE_EXEC \
| SD_BALANCE_NEWIDLE \
| SD_SERIALIZE, \
.last_balance = jiffies, \
.balance_interval = 1, \
.nr_balance_failed = 0, \
.max_newidle_lb_cost = 0, \
.next_decay_max_lb_cost = jiffies, \
}
#define cpu_to_node(cpu) ((void)(cpu), 0)
#define parent_node(node) ((void)(node), 0)
......
......@@ -261,18 +261,6 @@ int __init arch_probe_nr_irqs(void)
}
#ifdef CONFIG_HOTPLUG_CPU
static void route_irq(struct irq_data *data, unsigned int irq, unsigned int cpu)
{
struct irq_desc *desc = irq_to_desc(irq);
struct irq_chip *chip = irq_data_get_irq_chip(data);
unsigned long flags;
raw_spin_lock_irqsave(&desc->lock, flags);
if (chip->irq_set_affinity)
chip->irq_set_affinity(data, cpumask_of(cpu), false);
raw_spin_unlock_irqrestore(&desc->lock, flags);
}
/*
* The CPU has been marked offline. Migrate IRQs off this CPU. If
* the affinity settings do not allow other CPUs, force them onto any
......@@ -281,10 +269,9 @@ static void route_irq(struct irq_data *data, unsigned int irq, unsigned int cpu)
void migrate_irqs(void)
{
unsigned int i, cpu = smp_processor_id();
struct irq_desc *desc;
for_each_irq_desc(i, desc) {
struct irq_data *data = irq_desc_get_irq_data(desc);
for_each_active_irq(i) {
struct irq_data *data = irq_get_irq_data(i);
unsigned int newcpu;
if (irqd_is_per_cpu(data))
......@@ -300,11 +287,8 @@ void migrate_irqs(void)
i, cpu);
cpumask_setall(data->affinity);
newcpu = cpumask_any_and(data->affinity,
cpu_online_mask);
}
route_irq(data, i, newcpu);
irq_set_affinity(i, data->affinity);
}
}
#endif /* CONFIG_HOTPLUG_CPU */
......@@ -152,18 +152,18 @@ static void __user *get_sigframe(struct k_sigaction *ka, unsigned long sp,
return (void __user *)sp;
}
static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs)
static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
struct pt_regs *regs)
{
struct rt_sigframe __user *frame;
int err = -EFAULT;
int err;
unsigned long code;
frame = get_sigframe(ka, regs->REG_SP, sizeof(*frame));
frame = get_sigframe(&ksig->ka, regs->REG_SP, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto out;
return -EFAULT;
err = copy_siginfo_to_user(&frame->info, info);
err = copy_siginfo_to_user(&frame->info, &ksig->info);
/* Create the ucontext. */
err |= __put_user(0, &frame->uc.uc_flags);
......@@ -174,7 +174,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)
goto out;
return -EFAULT;
/* Set up to return from userspace. */
......@@ -187,15 +187,15 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __put_user(code, (unsigned long __user *)(&frame->retcode[1]));
if (err)
goto out;
return -EFAULT;
/* Set up registers for signal handler */
regs->REG_RTP = (unsigned long) frame->retcode;
regs->REG_SP = (unsigned long) frame + sizeof(*frame);
regs->REG_ARG1 = sig;
regs->REG_ARG1 = ksig->sig;
regs->REG_ARG2 = (unsigned long) &frame->info;
regs->REG_ARG3 = (unsigned long) &frame->uc;
regs->REG_PC = (unsigned long) ka->sa.sa_handler;
regs->REG_PC = (unsigned long) ksig->ka.sa.sa_handler;
pr_debug("SIG deliver (%s:%d): sp=%p pc=%08x pr=%08x\n",
current->comm, current->pid, frame, regs->REG_PC,
......@@ -205,24 +205,19 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
* effective cache flush - directed rather than 'full flush'.
*/
flush_cache_sigtramp(regs->REG_RTP, sizeof(frame->retcode));
out:
if (err) {
force_sigsegv(sig, current);
return -EFAULT;
}
return 0;
}
static void handle_signal(unsigned long sig, siginfo_t *info,
struct k_sigaction *ka, struct pt_regs *regs)
static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
int ret;
/* Set up the stack frame */
if (setup_rt_frame(sig, ka, info, oldset, regs))
return;
ret = setup_rt_frame(ksig, oldset, regs);
signal_delivered(sig, info, ka, regs, test_thread_flag(TIF_SINGLESTEP));
signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
}
/*
......@@ -235,10 +230,8 @@ static void handle_signal(unsigned long sig, siginfo_t *info,
static int do_signal(struct pt_regs *regs, int syscall)
{
unsigned int retval = 0, continue_addr = 0, restart_addr = 0;
struct k_sigaction ka;
siginfo_t info;
int signr;
int restart = 0;
struct ksignal ksig;
/*
* By the end of rt_sigreturn the context describes the point that the
......@@ -275,7 +268,8 @@ static int do_signal(struct pt_regs *regs, int syscall)
* Get the signal to deliver. When running under ptrace, at this point
* the debugger may change all our registers ...
*/
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
get_signal(&ksig);
/*
* Depending on the signal settings we may need to revert the decision
* to restart the system call. But skip this if a debugger has chosen to
......@@ -283,19 +277,19 @@ static int do_signal(struct pt_regs *regs, int syscall)
*/
if (regs->REG_PC != restart_addr)
restart = 0;
if (signr > 0) {
if (ksig.sig > 0) {
if (unlikely(restart)) {
if (retval == -ERESTARTNOHAND
|| retval == -ERESTART_RESTARTBLOCK
|| (retval == -ERESTARTSYS
&& !(ka.sa.sa_flags & SA_RESTART))) {
&& !(ksig.ka.sa.sa_flags & SA_RESTART))) {
regs->REG_RETVAL = -EINTR;
regs->REG_PC = continue_addr;
}
}
/* Whee! Actually deliver the signal. */
handle_signal(signr, &info, &ka, regs);
handle_signal(&ksig, regs);
return 0;
}
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment