Merge by hand (whitespace conflicts in libata.h)

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

5 files changed, 67 insertions, 14 deletions

diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 7b17a87a3311..7a3261f0bf79 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -9,6 +9,7 @@
  */
 #include <linux/module.h>
 #include <linux/string.h>
+#include <linux/cryptohash.h>
 #include <linux/delay.h>
 #include <linux/in6.h>
 #include <linux/syscalls.h>
@@ -126,6 +127,9 @@ EXPORT_SYMBOL(__put_user_2);
 EXPORT_SYMBOL(__put_user_4);
 EXPORT_SYMBOL(__put_user_8);
 
+        /* crypto hash */
+EXPORT_SYMBOL(sha_transform);
+
         /* gcc lib functions */
 EXPORT_SYMBOL(__ashldi3);
 EXPORT_SYMBOL(__ashrdi3);
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index a511ec5b11a3..d9fb819bf7cc 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -47,6 +47,13 @@
         movne   r0, sp
         adrne   lr, 1b
         bne     do_IPI
+
+#ifdef CONFIG_LOCAL_TIMERS
+        test_for_ltirq r0, r6, r5, lr
+        movne   r0, sp
+        adrne   lr, 1b
+        bne     do_local_timer
+#endif
 #endif
 
         .endm
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 9def4404e1f2..d7099dbbb879 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -264,6 +264,7 @@ unlock:
 #endif
 #ifdef CONFIG_SMP
                 show_ipi_list(p);
+                show_local_irqs(p);
 #endif
                 seq_printf(p, "Err: %10lu\n", irq_err_count);
         }
@@ -995,7 +996,7 @@ void __init init_irq_proc(void)
         struct proc_dir_entry *dir;
         int irq;
 
-        dir = proc_mkdir("irq", 0);
+        dir = proc_mkdir("irq", NULL);
         if (!dir)
                 return;
 
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index ba298277becd..30494aab829a 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -86,12 +86,16 @@ EXPORT_SYMBOL(pm_power_off);
  */
 void default_idle(void)
 {
-        local_irq_disable();
-        if (!need_resched() && !hlt_counter) {
-                timer_dyn_reprogram();
-                arch_idle();
+        if (hlt_counter)
+                cpu_relax();
+        else {
+                local_irq_disable();
+                if (!need_resched()) {
+                        timer_dyn_reprogram();
+                        arch_idle();
+                }
+                local_irq_enable();
         }
-        local_irq_enable();
 }
 
 /*
@@ -116,13 +120,13 @@ void cpu_idle(void)
 
                 if (!idle)
                         idle = default_idle;
-                preempt_disable();
                 leds_event(led_idle_start);
                 while (!need_resched())
                         idle();
                 leds_event(led_idle_end);
-                preempt_enable();
+                preempt_enable_no_resched();
                 schedule();
+                preempt_disable();
         }
 }
 
@@ -355,7 +359,7 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long stack_start,
         struct thread_info *thread = p->thread_info;
         struct pt_regs *childregs;
 
-        childregs = ((struct pt_regs *)((unsigned long)thread + THREAD_START_SP)) - 1;
+        childregs = (void *)thread + THREAD_START_SP - sizeof(*regs);
         *childregs = *regs;
         childregs->ARM_r0 = 0;
         childregs->ARM_sp = stack_start;
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index edb5a406922f..e55ea952f7aa 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -142,7 +142,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
                         ret = -EIO;
         }
 
-        secondary_data.stack = 0;
+        secondary_data.stack = NULL;
         secondary_data.pgdir = 0;
 
         *pmd_offset(pgd, PHYS_OFFSET) = __pmd(0);
@@ -185,6 +185,11 @@ int __cpuexit __cpu_disable(void)
         migrate_irqs();
 
         /*
+         * Stop the local timer for this CPU.
+         */
+        local_timer_stop(cpu);
+
+        /*
          * Flush user cache and TLB mappings, and then remove this CPU
          * from the vm mask set of all processes.
          */
@@ -251,7 +256,9 @@ void __cpuexit cpu_die(void)
 asmlinkage void __cpuinit secondary_start_kernel(void)
 {
         struct mm_struct *mm = &init_mm;
-        unsigned int cpu = smp_processor_id();
+        unsigned int cpu;
+
+        cpu = smp_processor_id();
 
         printk("CPU%u: Booted secondary processor\n", cpu);
 
@@ -268,6 +275,7 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
         local_flush_tlb_all();
 
         cpu_init();
+        preempt_disable();
 
         /*
          * Give the platform a chance to do its own initialisation.
@@ -290,6 +298,11 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
         cpu_set(cpu, cpu_online_map);
 
         /*
+         * Setup local timer for this CPU.
+         */
+        local_timer_setup(cpu);
+
+        /*
          * OK, it's off to the idle thread for us
          */
         cpu_idle();
@@ -359,8 +372,8 @@ static void send_ipi_message(cpumask_t callmap, enum ipi_msg_type msg)
  * You must not call this function with disabled interrupts, from a
  * hardware interrupt handler, nor from a bottom half handler.
  */
-int smp_call_function_on_cpu(void (*func)(void *info), void *info, int retry,
-                             int wait, cpumask_t callmap)
+static int smp_call_function_on_cpu(void (*func)(void *info), void *info,
+                                    int retry, int wait, cpumask_t callmap)
 {
         struct smp_call_struct data;
         unsigned long timeout;
@@ -454,6 +467,18 @@ void show_ipi_list(struct seq_file *p)
         seq_putc(p, '\n');
 }
 
+void show_local_irqs(struct seq_file *p)
+{
+        unsigned int cpu;
+
+        seq_printf(p, "LOC: ");
+
+        for_each_present_cpu(cpu)
+                seq_printf(p, "%10u ", irq_stat[cpu].local_timer_irqs);
+
+        seq_putc(p, '\n');
+}
+
 static void ipi_timer(struct pt_regs *regs)
 {
         int user = user_mode(regs);
@@ -464,6 +489,18 @@ static void ipi_timer(struct pt_regs *regs)
         irq_exit();
 }
 
+#ifdef CONFIG_LOCAL_TIMERS
+asmlinkage void do_local_timer(struct pt_regs *regs)
+{
+        int cpu = smp_processor_id();
+
+        if (local_timer_ack()) {
+                irq_stat[cpu].local_timer_irqs++;
+                ipi_timer(regs);
+        }
+}
+#endif
+
 /*
  * ipi_call_function - handle IPI from smp_call_function()
  *
@@ -515,7 +552,7 @@ static void ipi_cpu_stop(unsigned int cpu)
  *
  *  Bit 0 - Inter-processor function call
  */
-void do_IPI(struct pt_regs *regs)
+asmlinkage void do_IPI(struct pt_regs *regs)
 {
         unsigned int cpu = smp_processor_id();
         struct ipi_data *ipi = &per_cpu(ipi_data, cpu);