Merge branch 'master' of /home/davem/src/GIT/linux-2.6/

7 files changed, 81 insertions, 51 deletions

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index d6781ce687e2..6f1470baa314 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -133,6 +133,9 @@ config ZONE_DMA
 config NEED_DMA_MAP_STATE
         def_bool y
 
+config NEED_SG_DMA_LENGTH
+        def_bool y
+
 config GENERIC_ISA_DMA
         bool
         default y if SPARC32
diff --git a/arch/sparc/boot/btfixupprep.c b/arch/sparc/boot/btfixupprep.c
index bbf91b9c3d39..e7f2940bd270 100644
--- a/arch/sparc/boot/btfixupprep.c
+++ b/arch/sparc/boot/btfixupprep.c
@@ -325,7 +325,7 @@ main1:
                 (*rr)->next = NULL;
         }
         printf("! Generated by btfixupprep. Do not edit.\n\n");
-        printf("\t.section\t\".data.init\",#alloc,#write\n\t.align\t4\n\n");
+        printf("\t.section\t\".data..init\",#alloc,#write\n\t.align\t4\n\n");
         printf("\t.global\t___btfixup_start\n___btfixup_start:\n\n");
         for (i = 0; i < last; i++) {
                 f = array + i;
diff --git a/arch/sparc/include/asm/cache.h b/arch/sparc/include/asm/cache.h
index 78b07009f60a..0588b8c7faa2 100644
--- a/arch/sparc/include/asm/cache.h
+++ b/arch/sparc/include/asm/cache.h
@@ -21,7 +21,7 @@
 
 #define SMP_CACHE_BYTES (1 << SMP_CACHE_BYTES_SHIFT)
 
-#define __read_mostly __attribute__((__section__(".data.read_mostly")))
+#define __read_mostly __attribute__((__section__(".data..read_mostly")))
 
 #ifdef CONFIG_SPARC32
 #include <asm/asi.h>
diff --git a/arch/sparc/include/asm/scatterlist.h b/arch/sparc/include/asm/scatterlist.h
index d1120257b033..433e45f05fd4 100644
--- a/arch/sparc/include/asm/scatterlist.h
+++ b/arch/sparc/include/asm/scatterlist.h
@@ -1,8 +1,9 @@
 #ifndef _SPARC_SCATTERLIST_H
 #define _SPARC_SCATTERLIST_H
 
-#define sg_dma_len(sg)          ((sg)->dma_length)
-
 #include <asm-generic/scatterlist.h>
 
+#define ISA_DMA_THRESHOLD       (~0UL)
+#define ARCH_HAS_SG_CHAIN
+
 #endif /* !(_SPARC_SCATTERLIST_H) */
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index 2e1698332b6d..44faabc3c02c 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -92,6 +92,8 @@ struct cpu_hw_events {
 
         /* Enabled/disable state.  */
         int                     enabled;
+
+        unsigned int            group_flag;
 };
 DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = { .enabled = 1, };
 
@@ -982,53 +984,6 @@ static int collect_events(struct perf_event *group, int max_count,
         return n;
 }
 
-static void event_sched_in(struct perf_event *event)
-{
-        event->state = PERF_EVENT_STATE_ACTIVE;
-        event->oncpu = smp_processor_id();
-        event->tstamp_running += event->ctx->time - event->tstamp_stopped;
-        if (is_software_event(event))
-                event->pmu->enable(event);
-}
-
-int hw_perf_group_sched_in(struct perf_event *group_leader,
-                           struct perf_cpu_context *cpuctx,
-                           struct perf_event_context *ctx)
-{
-        struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
-        struct perf_event *sub;
-        int n0, n;
-
-        if (!sparc_pmu)
-                return 0;
-
-        n0 = cpuc->n_events;
-        n = collect_events(group_leader, perf_max_events - n0,
-                           &cpuc->event[n0], &cpuc->events[n0],
-                           &cpuc->current_idx[n0]);
-        if (n < 0)
-                return -EAGAIN;
-        if (check_excludes(cpuc->event, n0, n))
-                return -EINVAL;
-        if (sparc_check_constraints(cpuc->event, cpuc->events, n + n0))
-                return -EAGAIN;
-        cpuc->n_events = n0 + n;
-        cpuc->n_added += n;
-
-        cpuctx->active_oncpu += n;
-        n = 1;
-        event_sched_in(group_leader);
-        list_for_each_entry(sub, &group_leader->sibling_list, group_entry) {
-                if (sub->state != PERF_EVENT_STATE_OFF) {
-                        event_sched_in(sub);
-                        n++;
-                }
-        }
-        ctx->nr_active += n;
-
-        return 1;
-}
-
 static int sparc_pmu_enable(struct perf_event *event)
 {
         struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
@@ -1046,11 +1001,20 @@ static int sparc_pmu_enable(struct perf_event *event)
         cpuc->events[n0] = event->hw.event_base;
         cpuc->current_idx[n0] = PIC_NO_INDEX;
 
+        /*
+         * If group events scheduling transaction was started,
+         * skip the schedulability test here, it will be peformed
+         * at commit time(->commit_txn) as a whole
+         */
+        if (cpuc->group_flag & PERF_EVENT_TXN_STARTED)
+                goto nocheck;
+
         if (check_excludes(cpuc->event, n0, 1))
                 goto out;
         if (sparc_check_constraints(cpuc->event, cpuc->events, n0 + 1))
                 goto out;
 
+nocheck:
         cpuc->n_events++;
         cpuc->n_added++;
 
@@ -1130,11 +1094,61 @@ static int __hw_perf_event_init(struct perf_event *event)
         return 0;
 }
 
+/*
+ * Start group events scheduling transaction
+ * Set the flag to make pmu::enable() not perform the
+ * schedulability test, it will be performed at commit time
+ */
+static void sparc_pmu_start_txn(const struct pmu *pmu)
+{
+        struct cpu_hw_events *cpuhw = &__get_cpu_var(cpu_hw_events);
+
+        cpuhw->group_flag |= PERF_EVENT_TXN_STARTED;
+}
+
+/*
+ * Stop group events scheduling transaction
+ * Clear the flag and pmu::enable() will perform the
+ * schedulability test.
+ */
+static void sparc_pmu_cancel_txn(const struct pmu *pmu)
+{
+        struct cpu_hw_events *cpuhw = &__get_cpu_var(cpu_hw_events);
+
+        cpuhw->group_flag &= ~PERF_EVENT_TXN_STARTED;
+}
+
+/*
+ * Commit group events scheduling transaction
+ * Perform the group schedulability test as a whole
+ * Return 0 if success
+ */
+static int sparc_pmu_commit_txn(const struct pmu *pmu)
+{
+        struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+        int n;
+
+        if (!sparc_pmu)
+                return -EINVAL;
+
+        cpuc = &__get_cpu_var(cpu_hw_events);
+        n = cpuc->n_events;
+        if (check_excludes(cpuc->event, 0, n))
+                return -EINVAL;
+        if (sparc_check_constraints(cpuc->event, cpuc->events, n))
+                return -EAGAIN;
+
+        return 0;
+}
+
 static const struct pmu pmu = {
         .enable         = sparc_pmu_enable,
         .disable        = sparc_pmu_disable,
         .read           = sparc_pmu_read,
         .unthrottle     = sparc_pmu_unthrottle,
+        .start_txn      = sparc_pmu_start_txn,
+        .cancel_txn     = sparc_pmu_cancel_txn,
+        .commit_txn     = sparc_pmu_commit_txn,
 };
 
 const struct pmu *hw_perf_event_init(struct perf_event *event)
diff --git a/arch/sparc/math-emu/sfp-util_32.h b/arch/sparc/math-emu/sfp-util_32.h
index 0ea35afbb914..d1b2aff3c259 100644
--- a/arch/sparc/math-emu/sfp-util_32.h
+++ b/arch/sparc/math-emu/sfp-util_32.h
@@ -107,3 +107,9 @@
 
 #define abort()                                                         \
         return 0
+
+#ifdef __BIG_ENDIAN
+#define __BYTE_ORDER __BIG_ENDIAN
+#else
+#define __BYTE_ORDER __LITTLE_ENDIAN
+#endif
diff --git a/arch/sparc/math-emu/sfp-util_64.h b/arch/sparc/math-emu/sfp-util_64.h
index d17c9bc72181..425d3cf01af4 100644
--- a/arch/sparc/math-emu/sfp-util_64.h
+++ b/arch/sparc/math-emu/sfp-util_64.h
@@ -112,3 +112,9 @@
 
 #define abort() \
         return 0
+
+#ifdef __BIG_ENDIAN
+#define __BYTE_ORDER __BIG_ENDIAN
+#else
+#define __BYTE_ORDER __LITTLE_ENDIAN
+#endif