Merge branch 'parisc-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc updates from Helge Deller:
 "The most important changes in this patch set are:

   - DMA-related cleanups for parisc with the aim to move anything not
     required by drivers out of <asm/dma-mapping.h>, by Christoph
     Hellwig

   - Switch to memblock_alloc(), by Mike Rapoport

   - Makefile cleanups by Masahiro Yamada

   - Switch to bust_spinlocks(), by Sergey Senozhatsky

   - Improved initial SMP affinity selection for IRQs

   - Added IPI- and rescheduling interrupts in /proc/interrupts output"

* 'parisc-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: (21 commits)
  parisc: use memblock_alloc() instead of custom get_memblock()
  parisc: Add constants for various PDC firmware calls
  parisc: Add constant for PDC_PAT_COMPLEX firmware call
  parisc: Show machine product number during boot
  parisc: Add constants for PDC_RELOCATE PDC call
  parisc: Add PDC_CRASH_PREP PDC function number
  parisc: Use F_EXTEND() macro in iosapic code
  parisc: remove the HBA_DATA macro
  parisc/lba_pci: use container_of in LBA_DEV
  parisc/dino: use container_of in DINO_DEV
  parisc: properly type the return value of parisc_walk_tree
  parisc: properly type the iommu field in struct pci_hba_data
  parisc: turn GET_IOC into an inline function
  parisc: move internal implementation details out of <asm/dma-mapping.h>
  parisc: don't include <asm/cacheflush.h> in <asm/dma-mapping.h>
  parisc: remove meaningless ccflags-y in arch/parisc/boot/Makefile
  parisc: replace oops_in_progress manipulation with bust_spinlocks()
  parisc: Improve initial IRQ to CPU assignment
  parisc: Count IPI function call interrupts
  parisc: Show rescheduling interrupts on SMP machines only
  ...

6 files changed, 51 insertions, 7 deletions

diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c
index e6f3b49f2fd7..7a17551ea31e 100644
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -569,6 +569,30 @@ int pdc_model_capabilities(unsigned long *capabilities)
 }
 
 /**
+ * pdc_model_platform_info - Returns machine product and serial number.
+ * @orig_prod_num: Return buffer for original product number.
+ * @current_prod_num: Return buffer for current product number.
+ * @serial_no: Return buffer for serial number.
+ *
+ * Returns strings containing the original and current product numbers and the
+ * serial number of the system.
+ */
+int pdc_model_platform_info(char *orig_prod_num, char *current_prod_num,
+		char *serial_no)
+{
+	int retval;
+	unsigned long flags;
+
+	spin_lock_irqsave(&pdc_lock, flags);
+	retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_GET_PLATFORM_INFO,
+		__pa(orig_prod_num), __pa(current_prod_num), __pa(serial_no));
+	convert_to_wide(pdc_result);
+	spin_unlock_irqrestore(&pdc_lock, flags);
+
+	return retval;
+}
+
+/**
  * pdc_cache_info - Return cache and TLB information.
  * @cache_info: The return buffer.
  *
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index 0ca254085a66..23040a67583e 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -117,7 +117,10 @@ int cpu_check_affinity(struct irq_data *d, const struct cpumask *dest)
 		return -EINVAL;
 
 	/* whatever mask they set, we just allow one CPU */
-	cpu_dest = cpumask_first_and(dest, cpu_online_mask);
+	cpu_dest = cpumask_next_and(d->irq & (num_online_cpus()-1),
+					dest, cpu_online_mask);
+	if (cpu_dest >= nr_cpu_ids)
+		cpu_dest = cpumask_first_and(dest, cpu_online_mask);
 
 	return cpu_dest;
 }
@@ -175,10 +178,16 @@ int arch_show_interrupts(struct seq_file *p, int prec)
 # endif
 #endif
 #ifdef CONFIG_SMP
-	seq_printf(p, "%*s: ", prec, "RES");
-	for_each_online_cpu(j)
-		seq_printf(p, "%10u ", irq_stats(j)->irq_resched_count);
-	seq_puts(p, "  Rescheduling interrupts\n");
+	if (num_online_cpus() > 1) {
+		seq_printf(p, "%*s: ", prec, "RES");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ", irq_stats(j)->irq_resched_count);
+		seq_puts(p, "  Rescheduling interrupts\n");
+		seq_printf(p, "%*s: ", prec, "CAL");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ", irq_stats(j)->irq_call_count);
+		seq_puts(p, "  Function call interrupts\n");
+	}
 #endif
 	seq_printf(p, "%*s: ", prec, "UAH");
 	for_each_online_cpu(j)
diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c
index 82bd0d0927ce..7f4d042856b5 100644
--- a/arch/parisc/kernel/processor.c
+++ b/arch/parisc/kernel/processor.c
@@ -242,6 +242,7 @@ static int __init processor_probe(struct parisc_device *dev)
 void __init collect_boot_cpu_data(void)
 {
 	unsigned long cr16_seed;
+	char orig_prod_num[64], current_prod_num[64], serial_no[64];
 
 	memset(&boot_cpu_data, 0, sizeof(boot_cpu_data));
 
@@ -301,6 +302,14 @@ void __init collect_boot_cpu_data(void)
 	_parisc_requires_coherency = (boot_cpu_data.cpu_type == mako) ||
 				(boot_cpu_data.cpu_type == mako2);
 #endif
+
+	if (pdc_model_platform_info(orig_prod_num, current_prod_num, serial_no) == PDC_OK) {
+		printk(KERN_INFO "product %s, original product %s, S/N: %s\n",
+			current_prod_num, orig_prod_num, serial_no);
+		add_device_randomness(orig_prod_num, strlen(orig_prod_num));
+		add_device_randomness(current_prod_num, strlen(current_prod_num));
+		add_device_randomness(serial_no, strlen(serial_no));
+	}
 }
 
 
diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index f2cf86ac279b..15dd9e21be7e 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c
@@ -40,6 +40,7 @@
 #include <linux/sched/clock.h>
 #include <linux/start_kernel.h>
 
+#include <asm/cacheflush.h>
 #include <asm/processor.h>
 #include <asm/sections.h>
 #include <asm/pdc.h>
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 5e26dbede5fc..d9e2d69c9e48 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -155,6 +155,7 @@ ipi_interrupt(int irq, void *dev_id)
 
 			case IPI_CALL_FUNC:
 				smp_debug(100, KERN_DEBUG "CPU%d IPI_CALL_FUNC\n", this_cpu);
+				inc_irq_stat(irq_call_count);
 				generic_smp_call_function_interrupt();
 				break;
 
diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
index 472a818e8c17..7e1ccafadf57 100644
--- a/arch/parisc/kernel/traps.c
+++ b/arch/parisc/kernel/traps.c
@@ -218,7 +218,7 @@ void die_if_kernel(char *str, struct pt_regs *regs, long err)
 		return;
 	}
 
-	oops_in_progress = 1;
+	bust_spinlocks(1);
 
 	oops_enter();
 
@@ -396,7 +396,7 @@ void parisc_terminate(char *msg, struct pt_regs *regs, int code, unsigned long o
 {
 	static DEFINE_SPINLOCK(terminate_lock);
 
-	oops_in_progress = 1;
+	bust_spinlocks(1);
 
 	set_eiem(0);
 	local_irq_disable();