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Metag architecture changes for v3.15
- 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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (GNU/Linux) iQIcBAABAgAGBQJTOn6tAAoJEGwLaZPeOHZ60hEP/3NrrkjWJHVdHXQmFrKmhagb dlUTOHjDnULVR+zbKp70YNu/+xIy13Kq4EYKqbamdXFU+z804fXlnhrGdREig2E3 0+iPvruESfqylI1OjUz+PKpFeQ1TELps2qxPVLD/4iL/WhAZpX5s5YAzVM40JQ9b 4xPXToGamhz3HHStZwNdu5RL62+YV2GUnmTesDa/a2yYwP2pqPpdArfAdYaGywTC 9Va8z44d25RrR5IxvasfRPLFpdnmV/6eB6D4YZukEkMygseXEiD0IuXV1ijOysDf KuLqX3aPTMCvvDpsK/bjI2wQ156ZITP9FGlU8iYKPeIX0cSsudiV9WBBwANF2bGA zWjoghf93myk0Ju7JX4bqv8sjxI3w2gmJcNtTNiA/AR96Ug8VjdLzpYZ0PJFokSA XfbNtVGVrN8re1TmPomdWuzXf2i2qH+pqVG6t9J8NNTJLMlso4ms+pcUgCDUbqLn 2M6BpoKkxY/TYHsaUY7RcDhL/kN524V2IBCo3BCCR+J7TtVAlzG56Tc4XN+JPbkw qgrhD47b5z7nYn3jLDL8panwm8pi6HXllk1ZT7yZro+9RFpPDUEaFmPxfaIBkV0J y+6pZ8RT9Hm7/UnIotbNkOvwp4qjKtmOXneUqpKsj2oymsxriVdQlXm4juqvEmTJ 1coYs65bkoBPxYP+bzWs =/E/k -----END PGP SIGNATURE----- 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
This commit is contained in:
Linus Torvalds
commit
bb1775c9c4
@ -9,6 +9,7 @@ config METAG
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select HAVE_ARCH_TRACEHOOK
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select HAVE_C_RECORDMCOUNT
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select HAVE_DEBUG_KMEMLEAK
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select HAVE_DEBUG_STACKOVERFLOW
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select HAVE_DYNAMIC_FTRACE
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select HAVE_FTRACE_MCOUNT_RECORD
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select HAVE_FUNCTION_TRACER
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@ -29,7 +30,6 @@ config METAG
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select OF
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select OF_EARLY_FLATTREE
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select SPARSE_IRQ
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select HAVE_DEBUG_STACKOVERFLOW
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config STACKTRACE_SUPPORT
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def_bool y
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@ -3,33 +3,6 @@
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#ifdef CONFIG_NUMA
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/* sched_domains SD_NODE_INIT for Meta machines */
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#define SD_NODE_INIT (struct sched_domain) { \
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.parent = NULL, \
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.child = NULL, \
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.groups = NULL, \
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.min_interval = 8, \
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.max_interval = 32, \
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.busy_factor = 32, \
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.imbalance_pct = 125, \
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.cache_nice_tries = 2, \
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.busy_idx = 3, \
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.idle_idx = 2, \
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.newidle_idx = 0, \
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.wake_idx = 0, \
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.forkexec_idx = 0, \
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.flags = SD_LOAD_BALANCE \
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| SD_BALANCE_FORK \
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| SD_BALANCE_EXEC \
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| SD_BALANCE_NEWIDLE \
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| SD_SERIALIZE, \
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.last_balance = jiffies, \
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.balance_interval = 1, \
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.nr_balance_failed = 0, \
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.max_newidle_lb_cost = 0, \
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.next_decay_max_lb_cost = jiffies, \
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}
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#define cpu_to_node(cpu) ((void)(cpu), 0)
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#define parent_node(node) ((void)(node), 0)
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@ -261,18 +261,6 @@ int __init arch_probe_nr_irqs(void)
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}
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#ifdef CONFIG_HOTPLUG_CPU
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static void route_irq(struct irq_data *data, unsigned int irq, unsigned int cpu)
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{
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struct irq_desc *desc = irq_to_desc(irq);
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struct irq_chip *chip = irq_data_get_irq_chip(data);
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unsigned long flags;
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raw_spin_lock_irqsave(&desc->lock, flags);
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if (chip->irq_set_affinity)
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chip->irq_set_affinity(data, cpumask_of(cpu), false);
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raw_spin_unlock_irqrestore(&desc->lock, flags);
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}
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/*
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* The CPU has been marked offline. Migrate IRQs off this CPU. If
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* the affinity settings do not allow other CPUs, force them onto any
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@ -281,10 +269,9 @@ static void route_irq(struct irq_data *data, unsigned int irq, unsigned int cpu)
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void migrate_irqs(void)
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{
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unsigned int i, cpu = smp_processor_id();
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struct irq_desc *desc;
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for_each_irq_desc(i, desc) {
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struct irq_data *data = irq_desc_get_irq_data(desc);
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for_each_active_irq(i) {
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struct irq_data *data = irq_get_irq_data(i);
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unsigned int newcpu;
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if (irqd_is_per_cpu(data))
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@ -300,11 +287,8 @@ void migrate_irqs(void)
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i, cpu);
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cpumask_setall(data->affinity);
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newcpu = cpumask_any_and(data->affinity,
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cpu_online_mask);
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}
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route_irq(data, i, newcpu);
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irq_set_affinity(i, data->affinity);
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}
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}
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#endif /* CONFIG_HOTPLUG_CPU */
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@ -152,18 +152,18 @@ static void __user *get_sigframe(struct k_sigaction *ka, unsigned long sp,
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return (void __user *)sp;
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}
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static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
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sigset_t *set, struct pt_regs *regs)
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static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
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struct pt_regs *regs)
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{
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struct rt_sigframe __user *frame;
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int err = -EFAULT;
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int err;
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unsigned long code;
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frame = get_sigframe(ka, regs->REG_SP, sizeof(*frame));
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frame = get_sigframe(&ksig->ka, regs->REG_SP, sizeof(*frame));
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if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
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goto out;
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return -EFAULT;
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err = copy_siginfo_to_user(&frame->info, info);
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err = copy_siginfo_to_user(&frame->info, &ksig->info);
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/* Create the ucontext. */
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err |= __put_user(0, &frame->uc.uc_flags);
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@ -174,7 +174,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
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err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
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if (err)
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goto out;
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return -EFAULT;
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/* Set up to return from userspace. */
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@ -187,15 +187,15 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
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err |= __put_user(code, (unsigned long __user *)(&frame->retcode[1]));
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if (err)
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goto out;
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return -EFAULT;
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/* Set up registers for signal handler */
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regs->REG_RTP = (unsigned long) frame->retcode;
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regs->REG_SP = (unsigned long) frame + sizeof(*frame);
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regs->REG_ARG1 = sig;
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regs->REG_ARG1 = ksig->sig;
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regs->REG_ARG2 = (unsigned long) &frame->info;
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regs->REG_ARG3 = (unsigned long) &frame->uc;
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regs->REG_PC = (unsigned long) ka->sa.sa_handler;
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regs->REG_PC = (unsigned long) ksig->ka.sa.sa_handler;
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pr_debug("SIG deliver (%s:%d): sp=%p pc=%08x pr=%08x\n",
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current->comm, current->pid, frame, regs->REG_PC,
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@ -205,24 +205,19 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
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* effective cache flush - directed rather than 'full flush'.
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*/
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flush_cache_sigtramp(regs->REG_RTP, sizeof(frame->retcode));
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out:
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if (err) {
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force_sigsegv(sig, current);
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return -EFAULT;
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}
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return 0;
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}
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static void handle_signal(unsigned long sig, siginfo_t *info,
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struct k_sigaction *ka, struct pt_regs *regs)
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static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
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{
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sigset_t *oldset = sigmask_to_save();
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int ret;
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/* Set up the stack frame */
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if (setup_rt_frame(sig, ka, info, oldset, regs))
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return;
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ret = setup_rt_frame(ksig, oldset, regs);
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signal_delivered(sig, info, ka, regs, test_thread_flag(TIF_SINGLESTEP));
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signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP));
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}
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/*
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@ -235,10 +230,8 @@ static void handle_signal(unsigned long sig, siginfo_t *info,
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static int do_signal(struct pt_regs *regs, int syscall)
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{
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unsigned int retval = 0, continue_addr = 0, restart_addr = 0;
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struct k_sigaction ka;
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siginfo_t info;
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int signr;
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int restart = 0;
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struct ksignal ksig;
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/*
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* By the end of rt_sigreturn the context describes the point that the
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@ -275,7 +268,8 @@ static int do_signal(struct pt_regs *regs, int syscall)
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* Get the signal to deliver. When running under ptrace, at this point
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* the debugger may change all our registers ...
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*/
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signr = get_signal_to_deliver(&info, &ka, regs, NULL);
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get_signal(&ksig);
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/*
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* Depending on the signal settings we may need to revert the decision
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* to restart the system call. But skip this if a debugger has chosen to
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@ -283,19 +277,19 @@ static int do_signal(struct pt_regs *regs, int syscall)
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*/
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if (regs->REG_PC != restart_addr)
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restart = 0;
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if (signr > 0) {
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if (ksig.sig > 0) {
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if (unlikely(restart)) {
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if (retval == -ERESTARTNOHAND
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|| retval == -ERESTART_RESTARTBLOCK
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|| (retval == -ERESTARTSYS
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&& !(ka.sa.sa_flags & SA_RESTART))) {
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&& !(ksig.ka.sa.sa_flags & SA_RESTART))) {
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regs->REG_RETVAL = -EINTR;
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regs->REG_PC = continue_addr;
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}
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}
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/* Whee! Actually deliver the signal. */
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handle_signal(signr, &info, &ka, regs);
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handle_signal(&ksig, regs);
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return 0;
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}
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