diff options
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/Kconfig | 3 | ||||
| -rw-r--r-- | arch/sparc/boot/btfixupprep.c | 2 | ||||
| -rw-r--r-- | arch/sparc/include/asm/cache.h | 2 | ||||
| -rw-r--r-- | arch/sparc/include/asm/scatterlist.h | 5 | ||||
| -rw-r--r-- | arch/sparc/kernel/perf_event.c | 108 | ||||
| -rw-r--r-- | arch/sparc/math-emu/sfp-util_32.h | 6 | ||||
| -rw-r--r-- | arch/sparc/math-emu/sfp-util_64.h | 6 |
7 files changed, 81 insertions, 51 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index d6781ce687e..6f1470baa31 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 bbf91b9c3d3..e7f2940bd27 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 78b07009f60..0588b8c7faa 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 d1120257b03..433e45f05fd 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 2e1698332b6..44faabc3c02 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 0ea35afbb91..d1b2aff3c25 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 d17c9bc7218..425d3cf01af 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 |