summaryrefslogtreecommitdiffstats
path: root/arch/sparc/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc/kernel')
-rw-r--r--arch/sparc/kernel/ktlb.S8
-rw-r--r--arch/sparc/kernel/ldc.c4
-rw-r--r--arch/sparc/kernel/perf_event.c579
-rw-r--r--arch/sparc/kernel/smp_64.c53
4 files changed, 588 insertions, 56 deletions
diff --git a/arch/sparc/kernel/ktlb.S b/arch/sparc/kernel/ktlb.S
index 3ea6e8cde8c5..1d361477d7d6 100644
--- a/arch/sparc/kernel/ktlb.S
+++ b/arch/sparc/kernel/ktlb.S
@@ -280,8 +280,8 @@ kvmap_dtlb_nonlinear:
#ifdef CONFIG_SPARSEMEM_VMEMMAP
/* Do not use the TSB for vmemmap. */
- mov (VMEMMAP_BASE >> 24), %g5
- sllx %g5, 24, %g5
+ mov (VMEMMAP_BASE >> 40), %g5
+ sllx %g5, 40, %g5
cmp %g4,%g5
bgeu,pn %xcc, kvmap_vmemmap
nop
@@ -293,8 +293,8 @@ kvmap_dtlb_tsbmiss:
sethi %hi(MODULES_VADDR), %g5
cmp %g4, %g5
blu,pn %xcc, kvmap_dtlb_longpath
- mov (VMALLOC_END >> 24), %g5
- sllx %g5, 24, %g5
+ mov (VMALLOC_END >> 40), %g5
+ sllx %g5, 40, %g5
cmp %g4, %g5
bgeu,pn %xcc, kvmap_dtlb_longpath
nop
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
index adf5f273868a..cb3c72c45aab 100644
--- a/arch/sparc/kernel/ldc.c
+++ b/arch/sparc/kernel/ldc.c
@@ -1242,13 +1242,13 @@ int ldc_bind(struct ldc_channel *lp, const char *name)
snprintf(lp->tx_irq_name, LDC_IRQ_NAME_MAX, "%s TX", name);
err = request_irq(lp->cfg.rx_irq, ldc_rx,
- IRQF_SAMPLE_RANDOM | IRQF_SHARED,
+ IRQF_SAMPLE_RANDOM | IRQF_DISABLED | IRQF_SHARED,
lp->rx_irq_name, lp);
if (err)
return err;
err = request_irq(lp->cfg.tx_irq, ldc_tx,
- IRQF_SAMPLE_RANDOM | IRQF_SHARED,
+ IRQF_SAMPLE_RANDOM | IRQF_DISABLED | IRQF_SHARED,
lp->tx_irq_name, lp);
if (err) {
free_irq(lp->cfg.rx_irq, lp);
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index 2d6a1b10c81d..fa5936e1c3b9 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -56,7 +56,8 @@ struct cpu_hw_events {
struct perf_event *events[MAX_HWEVENTS];
unsigned long used_mask[BITS_TO_LONGS(MAX_HWEVENTS)];
unsigned long active_mask[BITS_TO_LONGS(MAX_HWEVENTS)];
- int enabled;
+ u64 pcr;
+ int enabled;
};
DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = { .enabled = 1, };
@@ -68,8 +69,30 @@ struct perf_event_map {
#define PIC_LOWER 0x02
};
+static unsigned long perf_event_encode(const struct perf_event_map *pmap)
+{
+ return ((unsigned long) pmap->encoding << 16) | pmap->pic_mask;
+}
+
+static void perf_event_decode(unsigned long val, u16 *enc, u8 *msk)
+{
+ *msk = val & 0xff;
+ *enc = val >> 16;
+}
+
+#define C(x) PERF_COUNT_HW_CACHE_##x
+
+#define CACHE_OP_UNSUPPORTED 0xfffe
+#define CACHE_OP_NONSENSE 0xffff
+
+typedef struct perf_event_map cache_map_t
+ [PERF_COUNT_HW_CACHE_MAX]
+ [PERF_COUNT_HW_CACHE_OP_MAX]
+ [PERF_COUNT_HW_CACHE_RESULT_MAX];
+
struct sparc_pmu {
const struct perf_event_map *(*event_map)(int);
+ const cache_map_t *cache_map;
int max_events;
int upper_shift;
int lower_shift;
@@ -80,21 +103,109 @@ struct sparc_pmu {
int lower_nop;
};
-static const struct perf_event_map ultra3i_perfmon_event_map[] = {
+static const struct perf_event_map ultra3_perfmon_event_map[] = {
[PERF_COUNT_HW_CPU_CYCLES] = { 0x0000, PIC_UPPER | PIC_LOWER },
[PERF_COUNT_HW_INSTRUCTIONS] = { 0x0001, PIC_UPPER | PIC_LOWER },
[PERF_COUNT_HW_CACHE_REFERENCES] = { 0x0009, PIC_LOWER },
[PERF_COUNT_HW_CACHE_MISSES] = { 0x0009, PIC_UPPER },
};
-static const struct perf_event_map *ultra3i_event_map(int event_id)
+static const struct perf_event_map *ultra3_event_map(int event_id)
{
- return &ultra3i_perfmon_event_map[event_id];
+ return &ultra3_perfmon_event_map[event_id];
}
-static const struct sparc_pmu ultra3i_pmu = {
- .event_map = ultra3i_event_map,
- .max_events = ARRAY_SIZE(ultra3i_perfmon_event_map),
+static const cache_map_t ultra3_cache_map = {
+[C(L1D)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { 0x09, PIC_LOWER, },
+ [C(RESULT_MISS)] = { 0x09, PIC_UPPER, },
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = { 0x0a, PIC_LOWER },
+ [C(RESULT_MISS)] = { 0x0a, PIC_UPPER },
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(L1I)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { 0x09, PIC_LOWER, },
+ [C(RESULT_MISS)] = { 0x09, PIC_UPPER, },
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_NONSENSE },
+ [ C(RESULT_MISS) ] = { CACHE_OP_NONSENSE },
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(LL)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { 0x0c, PIC_LOWER, },
+ [C(RESULT_MISS)] = { 0x0c, PIC_UPPER, },
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = { 0x0c, PIC_LOWER },
+ [C(RESULT_MISS)] = { 0x0c, PIC_UPPER },
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(DTLB)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { 0x12, PIC_UPPER, },
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(ITLB)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { 0x11, PIC_UPPER, },
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(BPU)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { CACHE_OP_UNSUPPORTED },
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+};
+
+static const struct sparc_pmu ultra3_pmu = {
+ .event_map = ultra3_event_map,
+ .cache_map = &ultra3_cache_map,
+ .max_events = ARRAY_SIZE(ultra3_perfmon_event_map),
.upper_shift = 11,
.lower_shift = 4,
.event_mask = 0x3f,
@@ -102,6 +213,121 @@ static const struct sparc_pmu ultra3i_pmu = {
.lower_nop = 0x14,
};
+/* Niagara1 is very limited. The upper PIC is hard-locked to count
+ * only instructions, so it is free running which creates all kinds of
+ * problems. Some hardware designs make one wonder if the creator
+ * even looked at how this stuff gets used by software.
+ */
+static const struct perf_event_map niagara1_perfmon_event_map[] = {
+ [PERF_COUNT_HW_CPU_CYCLES] = { 0x00, PIC_UPPER },
+ [PERF_COUNT_HW_INSTRUCTIONS] = { 0x00, PIC_UPPER },
+ [PERF_COUNT_HW_CACHE_REFERENCES] = { 0, PIC_NONE },
+ [PERF_COUNT_HW_CACHE_MISSES] = { 0x03, PIC_LOWER },
+};
+
+static const struct perf_event_map *niagara1_event_map(int event_id)
+{
+ return &niagara1_perfmon_event_map[event_id];
+}
+
+static const cache_map_t niagara1_cache_map = {
+[C(L1D)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { 0x03, PIC_LOWER, },
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { 0x03, PIC_LOWER, },
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(L1I)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { 0x00, PIC_UPPER },
+ [C(RESULT_MISS)] = { 0x02, PIC_LOWER, },
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_NONSENSE },
+ [ C(RESULT_MISS) ] = { CACHE_OP_NONSENSE },
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(LL)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { 0x07, PIC_LOWER, },
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { 0x07, PIC_LOWER, },
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(DTLB)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { 0x05, PIC_LOWER, },
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(ITLB)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { 0x04, PIC_LOWER, },
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(BPU)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { CACHE_OP_UNSUPPORTED },
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+};
+
+static const struct sparc_pmu niagara1_pmu = {
+ .event_map = niagara1_event_map,
+ .cache_map = &niagara1_cache_map,
+ .max_events = ARRAY_SIZE(niagara1_perfmon_event_map),
+ .upper_shift = 0,
+ .lower_shift = 4,
+ .event_mask = 0x7,
+ .upper_nop = 0x0,
+ .lower_nop = 0x0,
+};
+
static const struct perf_event_map niagara2_perfmon_event_map[] = {
[PERF_COUNT_HW_CPU_CYCLES] = { 0x02ff, PIC_UPPER | PIC_LOWER },
[PERF_COUNT_HW_INSTRUCTIONS] = { 0x02ff, PIC_UPPER | PIC_LOWER },
@@ -116,14 +342,102 @@ static const struct perf_event_map *niagara2_event_map(int event_id)
return &niagara2_perfmon_event_map[event_id];
}
+static const cache_map_t niagara2_cache_map = {
+[C(L1D)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { 0x0208, PIC_UPPER | PIC_LOWER, },
+ [C(RESULT_MISS)] = { 0x0302, PIC_UPPER | PIC_LOWER, },
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = { 0x0210, PIC_UPPER | PIC_LOWER, },
+ [C(RESULT_MISS)] = { 0x0302, PIC_UPPER | PIC_LOWER, },
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(L1I)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { 0x02ff, PIC_UPPER | PIC_LOWER, },
+ [C(RESULT_MISS)] = { 0x0301, PIC_UPPER | PIC_LOWER, },
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_NONSENSE },
+ [ C(RESULT_MISS) ] = { CACHE_OP_NONSENSE },
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(LL)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { 0x0208, PIC_UPPER | PIC_LOWER, },
+ [C(RESULT_MISS)] = { 0x0330, PIC_UPPER | PIC_LOWER, },
+ },
+ [C(OP_WRITE)] = {
+ [C(RESULT_ACCESS)] = { 0x0210, PIC_UPPER | PIC_LOWER, },
+ [C(RESULT_MISS)] = { 0x0320, PIC_UPPER | PIC_LOWER, },
+ },
+ [C(OP_PREFETCH)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(DTLB)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { 0x0b08, PIC_UPPER | PIC_LOWER, },
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(ITLB)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { 0xb04, PIC_UPPER | PIC_LOWER, },
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+[C(BPU)] = {
+ [C(OP_READ)] = {
+ [C(RESULT_ACCESS)] = { CACHE_OP_UNSUPPORTED },
+ [C(RESULT_MISS)] = { CACHE_OP_UNSUPPORTED },
+ },
+ [ C(OP_WRITE) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+ [ C(OP_PREFETCH) ] = {
+ [ C(RESULT_ACCESS) ] = { CACHE_OP_UNSUPPORTED },
+ [ C(RESULT_MISS) ] = { CACHE_OP_UNSUPPORTED },
+ },
+},
+};
+
static const struct sparc_pmu niagara2_pmu = {
.event_map = niagara2_event_map,
+ .cache_map = &niagara2_cache_map,
.max_events = ARRAY_SIZE(niagara2_perfmon_event_map),
.upper_shift = 19,
.lower_shift = 6,
.event_mask = 0xfff,
.hv_bit = 0x8,
- .irq_bit = 0x03,
+ .irq_bit = 0x30,
.upper_nop = 0x220,
.lower_nop = 0x220,
};
@@ -151,23 +465,30 @@ static u64 nop_for_index(int idx)
sparc_pmu->lower_nop, idx);
}
-static inline void sparc_pmu_enable_event(struct hw_perf_event *hwc,
- int idx)
+static inline void sparc_pmu_enable_event(struct cpu_hw_events *cpuc, struct hw_perf_event *hwc, int idx)
{
u64 val, mask = mask_for_index(idx);
- val = pcr_ops->read();
- pcr_ops->write((val & ~mask) | hwc->config);
+ val = cpuc->pcr;
+ val &= ~mask;
+ val |= hwc->config;
+ cpuc->pcr = val;
+
+ pcr_ops->write(cpuc->pcr);
}
-static inline void sparc_pmu_disable_event(struct hw_perf_event *hwc,
- int idx)
+static inline void sparc_pmu_disable_event(struct cpu_hw_events *cpuc, struct hw_perf_event *hwc, int idx)
{
u64 mask = mask_for_index(idx);
u64 nop = nop_for_index(idx);
- u64 val = pcr_ops->read();
+ u64 val;
- pcr_ops->write((val & ~mask) | nop);
+ val = cpuc->pcr;
+ val &= ~mask;
+ val |= nop;
+ cpuc->pcr = val;
+
+ pcr_ops->write(cpuc->pcr);
}
void hw_perf_enable(void)
@@ -182,7 +503,7 @@ void hw_perf_enable(void)
cpuc->enabled = 1;
barrier();
- val = pcr_ops->read();
+ val = cpuc->pcr;
for (i = 0; i < MAX_HWEVENTS; i++) {
struct perf_event *cp = cpuc->events[i];
@@ -194,7 +515,9 @@ void hw_perf_enable(void)
val |= hwc->config_base;
}
- pcr_ops->write(val);
+ cpuc->pcr = val;
+
+ pcr_ops->write(cpuc->pcr);
}
void hw_perf_disable(void)
@@ -207,10 +530,12 @@ void hw_perf_disable(void)
cpuc->enabled = 0;
- val = pcr_ops->read();
+ val = cpuc->pcr;
val &= ~(PCR_UTRACE | PCR_STRACE |
sparc_pmu->hv_bit | sparc_pmu->irq_bit);
- pcr_ops->write(val);
+ cpuc->pcr = val;
+
+ pcr_ops->write(cpuc->pcr);
}
static u32 read_pmc(int idx)
@@ -242,7 +567,7 @@ static void write_pmc(int idx, u64 val)
}
static int sparc_perf_event_set_period(struct perf_event *event,
- struct hw_perf_event *hwc, int idx)
+ struct hw_perf_event *hwc, int idx)
{
s64 left = atomic64_read(&hwc->period_left);
s64 period = hwc->sample_period;
@@ -282,19 +607,19 @@ static int sparc_pmu_enable(struct perf_event *event)
if (test_and_set_bit(idx, cpuc->used_mask))
return -EAGAIN;
- sparc_pmu_disable_event(hwc, idx);
+ sparc_pmu_disable_event(cpuc, hwc, idx);
cpuc->events[idx] = event;
set_bit(idx, cpuc->active_mask);
sparc_perf_event_set_period(event, hwc, idx);
- sparc_pmu_enable_event(hwc, idx);
+ sparc_pmu_enable_event(cpuc, hwc, idx);
perf_event_update_userpage(event);
return 0;
}
static u64 sparc_perf_event_update(struct perf_event *event,
- struct hw_perf_event *hwc, int idx)
+ struct hw_perf_event *hwc, int idx)
{
int shift = 64 - 32;
u64 prev_raw_count, new_raw_count;
@@ -324,7 +649,7 @@ static void sparc_pmu_disable(struct perf_event *event)
int idx = hwc->idx;
clear_bit(idx, cpuc->active_mask);
- sparc_pmu_disable_event(hwc, idx);
+ sparc_pmu_disable_event(cpuc, hwc, idx);
barrier();
@@ -338,18 +663,29 @@ static void sparc_pmu_disable(struct perf_event *event)
static void sparc_pmu_read(struct perf_event *event)
{
struct hw_perf_event *hwc = &event->hw;
+
sparc_perf_event_update(event, hwc, hwc->idx);
}
static void sparc_pmu_unthrottle(struct perf_event *event)
{
+ struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
struct hw_perf_event *hwc = &event->hw;
- sparc_pmu_enable_event(hwc, hwc->idx);
+
+ sparc_pmu_enable_event(cpuc, hwc, hwc->idx);
}
static atomic_t active_events = ATOMIC_INIT(0);
static DEFINE_MUTEX(pmc_grab_mutex);
+static void perf_stop_nmi_watchdog(void *unused)
+{
+ struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+
+ stop_nmi_watchdog(NULL);
+ cpuc->pcr = pcr_ops->read();
+}
+
void perf_event_grab_pmc(void)
{
if (atomic_inc_not_zero(&active_events))
@@ -358,7 +694,7 @@ void perf_event_grab_pmc(void)
mutex_lock(&pmc_grab_mutex);
if (atomic_read(&active_events) == 0) {
if (atomic_read(&nmi_active) > 0) {
- on_each_cpu(stop_nmi_watchdog, NULL, 1);
+ on_each_cpu(perf_stop_nmi_watchdog, NULL, 1);
BUG_ON(atomic_read(&nmi_active) != 0);
}
atomic_inc(&active_events);
@@ -375,30 +711,160 @@ void perf_event_release_pmc(void)
}
}
+static const struct perf_event_map *sparc_map_cache_event(u64 config)
+{
+ unsigned int cache_type, cache_op, cache_result;
+ const struct perf_event_map *pmap;
+
+ if (!sparc_pmu->cache_map)
+ return ERR_PTR(-ENOENT);
+
+ cache_type = (config >> 0) & 0xff;
+ if (cache_type >= PERF_COUNT_HW_CACHE_MAX)
+ return ERR_PTR(-EINVAL);
+
+ cache_op = (config >> 8) & 0xff;
+ if (cache_op >= PERF_COUNT_HW_CACHE_OP_MAX)
+ return ERR_PTR(-EINVAL);
+
+ cache_result = (config >> 16) & 0xff;
+ if (cache_result >= PERF_COUNT_HW_CACHE_RESULT_MAX)
+ return ERR_PTR(-EINVAL);
+
+ pmap = &((*sparc_pmu->cache_map)[cache_type][cache_op][cache_result]);
+
+ if (pmap->encoding == CACHE_OP_UNSUPPORTED)
+ return ERR_PTR(-ENOENT);
+
+ if (pmap->encoding == CACHE_OP_NONSENSE)
+ return ERR_PTR(-EINVAL);
+
+ return pmap;
+}
+
static void hw_perf_event_destroy(struct perf_event *event)
{
perf_event_release_pmc();
}
+/* Make sure all events can be scheduled into the hardware at
+ * the same time. This is simplified by the fact that we only
+ * need to support 2 simultaneous HW events.
+ */
+static int sparc_check_constraints(unsigned long *events, int n_ev)
+{
+ if (n_ev <= perf_max_events) {
+ u8 msk1, msk2;
+ u16 dummy;
+
+ if (n_ev == 1)
+ return 0;
+ BUG_ON(n_ev != 2);
+ perf_event_decode(events[0], &dummy, &msk1);
+ perf_event_decode(events[1], &dummy, &msk2);
+
+ /* If both events can go on any counter, OK. */
+ if (msk1 == (PIC_UPPER | PIC_LOWER) &&
+ msk2 == (PIC_UPPER | PIC_LOWER))
+ return 0;
+
+ /* If one event is limited to a specific counter,
+ * and the other can go on both, OK.
+ */
+ if ((msk1 == PIC_UPPER || msk1 == PIC_LOWER) &&
+ msk2 == (PIC_UPPER | PIC_LOWER))
+ return 0;
+ if ((msk2 == PIC_UPPER || msk2 == PIC_LOWER) &&
+ msk1 == (PIC_UPPER | PIC_LOWER))
+ return 0;
+
+ /* If the events are fixed to different counters, OK. */
+ if ((msk1 == PIC_UPPER && msk2 == PIC_LOWER) ||
+ (msk1 == PIC_LOWER && msk2 == PIC_UPPER))
+ return 0;
+
+ /* Otherwise, there is a conflict. */
+ }
+
+ return -1;
+}
+
+static int check_excludes(struct perf_event **evts, int n_prev, int n_new)
+{
+ int eu = 0, ek = 0, eh = 0;
+ struct perf_event *event;
+ int i, n, first;
+
+ n = n_prev + n_new;
+ if (n <= 1)
+ return 0;
+
+ first = 1;
+ for (i = 0; i < n; i++) {
+ event = evts[i];
+ if (first) {
+ eu = event->attr.exclude_user;
+ ek = event->attr.exclude_kernel;
+ eh = event->attr.exclude_hv;
+ first = 0;
+ } else if (event->attr.exclude_user != eu ||
+ event->attr.exclude_kernel != ek ||
+ event->attr.exclude_hv != eh) {
+ return -EAGAIN;
+ }
+ }
+
+ return 0;
+}
+
+static int collect_events(struct perf_event *group, int max_count,
+ struct perf_event *evts[], unsigned long *events)
+{
+ struct perf_event *event;
+ int n = 0;
+
+ if (!is_software_event(group)) {
+ if (n >= max_count)
+ return -1;
+ evts[n] = group;
+ events[n++] = group->hw.event_base;
+ }
+ list_for_each_entry(event, &group->sibling_list, group_entry) {
+ if (!is_software_event(event) &&
+ event->state != PERF_EVENT_STATE_OFF) {
+ if (n >= max_count)
+ return -1;
+ evts[n] = event;
+ events[n++] = event->hw.event_base;
+ }
+ }
+ return n;
+}
+
static int __hw_perf_event_init(struct perf_event *event)
{
struct perf_event_attr *attr = &event->attr;
+ struct perf_event *evts[MAX_HWEVENTS];
struct hw_perf_event *hwc = &event->hw;
+ unsigned long events[MAX_HWEVENTS];
const struct perf_event_map *pmap;
u64 enc;
+ int n;
if (atomic_read(&nmi_active) < 0)
return -ENODEV;
- if (attr->type != PERF_TYPE_HARDWARE)
+ if (attr->type == PERF_TYPE_HARDWARE) {
+ if (attr->config >= sparc_pmu->max_events)
+ return -EINVAL;
+ pmap = sparc_pmu->event_map(attr->config);
+ } else if (attr->type == PERF_TYPE_HW_CACHE) {
+ pmap = sparc_map_cache_event(attr->config);
+ if (IS_ERR(pmap))
+ return PTR_ERR(pmap);
+ } else
return -EOPNOTSUPP;
- if (attr->config >= sparc_pmu->max_events)
- return -EINVAL;
-
- perf_event_grab_pmc();
- event->destroy = hw_perf_event_destroy;
-
/* We save the enable bits in the config_base. So to
* turn off sampling just write 'config', and to enable
* things write 'config | config_base'.
@@ -411,15 +877,39 @@ static int __hw_perf_event_init(struct perf_event *event)
if (!attr->exclude_hv)
hwc->config_base |= sparc_pmu->hv_bit;
+ hwc->event_base = perf_event_encode(pmap);
+
+ enc = pmap->encoding;
+
+ n = 0;
+ if (event->group_leader != event) {
+ n = collect_events(event->group_leader,
+ perf_max_events - 1,
+ evts, events);
+ if (n < 0)
+ return -EINVAL;
+ }
+ events[n] = hwc->event_base;
+ evts[n] = event;
+
+ if (check_excludes(evts, n, 1))
+ return -EINVAL;
+
+ if (sparc_check_constraints(events, n + 1))
+ return -EINVAL;
+
+ /* Try to do all error checking before this point, as unwinding
+ * state after grabbing the PMC is difficult.
+ */
+ perf_event_grab_pmc();
+ event->destroy = hw_perf_event_destroy;
+
if (!hwc->sample_period) {
hwc->sample_period = MAX_PERIOD;
hwc->last_period = hwc->sample_period;
atomic64_set(&hwc->period_left, hwc->sample_period);
}
- pmap = sparc_pmu->event_map(attr->config);
-
- enc = pmap->encoding;
if (pmap->pic_mask & PIC_UPPER) {
hwc->idx = PIC_UPPER_INDEX;
enc <<= sparc_pmu->upper_shift;
@@ -472,7 +962,7 @@ void perf_event_print_debug(void)
}
static int __kprobes perf_event_nmi_handler(struct notifier_block *self,
- unsigned long cmd, void *__args)
+ unsigned long cmd, void *__args)
{
struct die_args *args = __args;
struct perf_sample_data data;
@@ -513,7 +1003,7 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self,
continue;
if (perf_event_overflow(event, 1, &data, regs))
- sparc_pmu_disable_event(hwc, idx);
+ sparc_pmu_disable_event(cpuc, hwc, idx);
}
return NOTIFY_STOP;
@@ -525,8 +1015,15 @@ static __read_mostly struct notifier_block perf_event_nmi_notifier = {
static bool __init supported_pmu(void)
{
- if (!strcmp(sparc_pmu_type, "ultra3i")) {
- sparc_pmu = &ultra3i_pmu;
+ if (!strcmp(sparc_pmu_type, "ultra3") ||
+ !strcmp(sparc_pmu_type, "ultra3+") ||
+ !strcmp(sparc_pmu_type, "ultra3i") ||
+ !strcmp(sparc_pmu_type, "ultra4+")) {
+ sparc_pmu = &ultra3_pmu;
+ return true;
+ }
+ if (!strcmp(sparc_pmu_type, "niagara")) {
+ sparc_pmu = &niagara1_pmu;
return true;
}
if (!strcmp(sparc_pmu_type, "niagara2")) {
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index ff68373ce6d6..aa36223497b9 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -1420,7 +1420,7 @@ static void __init pcpu_free_bootmem(void *ptr, size_t size)
free_bootmem(__pa(ptr), size);
}
-static int pcpu_cpu_distance(unsigned int from, unsigned int to)
+static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
{
if (cpu_to_node(from) == cpu_to_node(to))
return LOCAL_DISTANCE;
@@ -1428,18 +1428,53 @@ static int pcpu_cpu_distance(unsigned int from, unsigned int to)
return REMOTE_DISTANCE;
}
+static void __init pcpu_populate_pte(unsigned long addr)
+{
+ pgd_t *pgd = pgd_offset_k(addr);
+ pud_t *pud;
+ pmd_t *pmd;
+
+ pud = pud_offset(pgd, addr);
+ if (pud_none(*pud)) {
+ pmd_t *new;
+
+ new = __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE);
+ pud_populate(&init_mm, pud, new);
+ }
+
+ pmd = pmd_offset(pud, addr);
+ if (!pmd_present(*pmd)) {
+ pte_t *new;
+
+ new = __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE);
+ pmd_populate_kernel(&init_mm, pmd, new);
+ }
+}
+
void __init setup_per_cpu_areas(void)
{
unsigned long delta;
unsigned int cpu;
- int rc;
-
- rc = pcpu_embed_first_chunk(PERCPU_MODULE_RESERVE,
- PERCPU_DYNAMIC_RESERVE, 4 << 20,
- pcpu_cpu_distance, pcpu_alloc_bootmem,
- pcpu_free_bootmem);
- if (rc)
- panic("failed to initialize first chunk (%d)", rc);
+ int rc = -EINVAL;
+
+ if (pcpu_chosen_fc != PCPU_FC_PAGE) {
+ rc = pcpu_embed_first_chunk(PERCPU_MODULE_RESERVE,
+ PERCPU_DYNAMIC_RESERVE, 4 << 20,
+ pcpu_cpu_distance,
+ pcpu_alloc_bootmem,
+ pcpu_free_bootmem);
+ if (rc)
+ pr_warning("PERCPU: %s allocator failed (%d), "
+ "falling back to page size\n",
+ pcpu_fc_names[pcpu_chosen_fc], rc);
+ }
+ if (rc < 0)
+ rc = pcpu_page_first_chunk(PERCPU_MODULE_RESERVE,
+ pcpu_alloc_bootmem,
+ pcpu_free_bootmem,
+ pcpu_populate_pte);
+ if (rc < 0)
+ panic("cannot initialize percpu area (err=%d)", rc);
delta = (unsigned long)pcpu_base_addr - (unsigned long)__per_cpu_start;
for_each_possible_cpu(cpu)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 12:11:27 +0000