Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[pandora-kernel.git] / arch / powerpc / platforms / pseries / xics.c

diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index f5f7919..4ca6410 100644 (file)
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -127,7 +127,7 @@ static inline unsigned int lpar_xirr_info_get(void)
 
        lpar_rc = plpar_xirr(&return_value);
        if (lpar_rc != H_SUCCESS)
-               panic(" bad return code xirr - rc = %lx \n", lpar_rc);
+               panic(" bad return code xirr - rc = %lx\n", lpar_rc);
        return (unsigned int)return_value;
 }
 
@@ -424,7 +424,7 @@ static int xics_set_affinity(unsigned int virq, const struct cpumask *cpumask)
 }
 
 static struct irq_chip xics_pic_direct = {
-       .name = " XICS     ",
+       .name = "XICS",
        .startup = xics_startup,
        .mask = xics_mask_irq,
        .unmask = xics_unmask_irq,
@@ -433,7 +433,7 @@ static struct irq_chip xics_pic_direct = {
 };
 
 static struct irq_chip xics_pic_lpar = {
-       .name = " XICS     ",
+       .name = "XICS",
        .startup = xics_startup,
        .mask = xics_mask_irq,
        .unmask = xics_unmask_irq,
@@ -510,15 +510,13 @@ static void __init xics_init_host(void)
 /*
  * XICS only has a single IPI, so encode the messages per CPU
  */
-struct xics_ipi_struct {
-        unsigned long value;
-       } ____cacheline_aligned;
-
-static struct xics_ipi_struct xics_ipi_message[NR_CPUS] __cacheline_aligned;
+static DEFINE_PER_CPU_SHARED_ALIGNED(unsigned long, xics_ipi_message);
 
 static inline void smp_xics_do_message(int cpu, int msg)
 {
-       set_bit(msg, &xics_ipi_message[cpu].value);
+       unsigned long *tgt = &per_cpu(xics_ipi_message, cpu);
+
+       set_bit(msg, tgt);
        mb();
        if (firmware_has_feature(FW_FEATURE_LPAR))
                lpar_qirr_info(cpu, IPI_PRIORITY);
@@ -544,25 +542,23 @@ void smp_xics_message_pass(int target, int msg)
 
 static irqreturn_t xics_ipi_dispatch(int cpu)
 {
+       unsigned long *tgt = &per_cpu(xics_ipi_message, cpu);
+
        WARN_ON(cpu_is_offline(cpu));
 
        mb();   /* order mmio clearing qirr */
-       while (xics_ipi_message[cpu].value) {
-               if (test_and_clear_bit(PPC_MSG_CALL_FUNCTION,
-                                      &xics_ipi_message[cpu].value)) {
+       while (*tgt) {
+               if (test_and_clear_bit(PPC_MSG_CALL_FUNCTION, tgt)) {
                        smp_message_recv(PPC_MSG_CALL_FUNCTION);
                }
-               if (test_and_clear_bit(PPC_MSG_RESCHEDULE,
-                                      &xics_ipi_message[cpu].value)) {
+               if (test_and_clear_bit(PPC_MSG_RESCHEDULE, tgt)) {
                        smp_message_recv(PPC_MSG_RESCHEDULE);
                }
-               if (test_and_clear_bit(PPC_MSG_CALL_FUNC_SINGLE,
-                                      &xics_ipi_message[cpu].value)) {
+               if (test_and_clear_bit(PPC_MSG_CALL_FUNC_SINGLE, tgt)) {
                        smp_message_recv(PPC_MSG_CALL_FUNC_SINGLE);
                }
 #if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC)
-               if (test_and_clear_bit(PPC_MSG_DEBUGGER_BREAK,
-                                      &xics_ipi_message[cpu].value)) {
+               if (test_and_clear_bit(PPC_MSG_DEBUGGER_BREAK, tgt)) {
                        smp_message_recv(PPC_MSG_DEBUGGER_BREAK);
                }
 #endif