Lines Matching full:stream
36 * descriptor representing a stream of GPU metrics which can then be read() as
37 * a stream of sample records.
56 * i915 perf file descriptors represent a "stream" instead of an "event"; where
57 * a perf event primarily corresponds to a single 64bit value, while a stream
61 * of related counters. Samples for an i915 perf stream capturing OA metrics
64 * selected by the user opening the stream. Perf has support for grouping
68 * i915 perf stream configurations are provided as an array of u64 (key,value)
343 * struct perf_open_properties - for validated properties given to open a stream
362 * to open a stream of metrics the configuration is built up in the structure
431 struct i915_perf_regs *__oa_regs(struct i915_perf_stream *stream) in __oa_regs() argument
433 return &stream->engine->oa_group->regs; in __oa_regs()
436 static u32 gen12_oa_hw_tail_read(struct i915_perf_stream *stream) in gen12_oa_hw_tail_read() argument
438 struct intel_uncore *uncore = stream->uncore; in gen12_oa_hw_tail_read()
440 return intel_uncore_read(uncore, __oa_regs(stream)->oa_tail_ptr) & in gen12_oa_hw_tail_read()
444 static u32 gen8_oa_hw_tail_read(struct i915_perf_stream *stream) in gen8_oa_hw_tail_read() argument
446 struct intel_uncore *uncore = stream->uncore; in gen8_oa_hw_tail_read()
451 static u32 gen7_oa_hw_tail_read(struct i915_perf_stream *stream) in gen7_oa_hw_tail_read() argument
453 struct intel_uncore *uncore = stream->uncore; in gen7_oa_hw_tail_read()
462 static u64 oa_report_id(struct i915_perf_stream *stream, void *report) in oa_report_id() argument
464 return oa_report_header_64bit(stream) ? *(u64 *)report : *(u32 *)report; in oa_report_id()
467 static u64 oa_report_reason(struct i915_perf_stream *stream, void *report) in oa_report_reason() argument
469 return (oa_report_id(stream, report) >> OAREPORT_REASON_SHIFT) & in oa_report_reason()
470 (GRAPHICS_VER(stream->perf->i915) == 12 ? in oa_report_reason()
475 static void oa_report_id_clear(struct i915_perf_stream *stream, u32 *report) in oa_report_id_clear() argument
477 if (oa_report_header_64bit(stream)) in oa_report_id_clear()
483 static bool oa_report_ctx_invalid(struct i915_perf_stream *stream, void *report) in oa_report_ctx_invalid() argument
485 return !(oa_report_id(stream, report) & in oa_report_ctx_invalid()
486 stream->perf->gen8_valid_ctx_bit); in oa_report_ctx_invalid()
489 static u64 oa_timestamp(struct i915_perf_stream *stream, void *report) in oa_timestamp() argument
491 return oa_report_header_64bit(stream) ? in oa_timestamp()
496 static void oa_timestamp_clear(struct i915_perf_stream *stream, u32 *report) in oa_timestamp_clear() argument
498 if (oa_report_header_64bit(stream)) in oa_timestamp_clear()
504 static u32 oa_context_id(struct i915_perf_stream *stream, u32 *report) in oa_context_id() argument
506 u32 ctx_id = oa_report_header_64bit(stream) ? report[4] : report[2]; in oa_context_id()
508 return ctx_id & stream->specific_ctx_id_mask; in oa_context_id()
511 static void oa_context_id_squash(struct i915_perf_stream *stream, u32 *report) in oa_context_id_squash() argument
513 if (oa_report_header_64bit(stream)) in oa_context_id_squash()
521 * @stream: i915 stream instance
537 * only called while the stream is enabled, while the global OA configuration
542 static bool oa_buffer_check_unlocked(struct i915_perf_stream *stream) in oa_buffer_check_unlocked() argument
544 u32 gtt_offset = i915_ggtt_offset(stream->oa_buffer.vma); in oa_buffer_check_unlocked()
545 int report_size = stream->oa_buffer.format->size; in oa_buffer_check_unlocked()
556 spin_lock_irqsave(&stream->oa_buffer.ptr_lock, flags); in oa_buffer_check_unlocked()
558 hw_tail = stream->perf->ops.oa_hw_tail_read(stream); in oa_buffer_check_unlocked()
566 partial_report_size = OA_TAKEN(hw_tail, stream->oa_buffer.tail); in oa_buffer_check_unlocked()
575 * Walk the stream backward until we find a report with report in oa_buffer_check_unlocked()
586 while (OA_TAKEN(tail, stream->oa_buffer.tail) >= report_size) { in oa_buffer_check_unlocked()
587 void *report = stream->oa_buffer.vaddr + tail; in oa_buffer_check_unlocked()
589 if (oa_report_id(stream, report) || in oa_buffer_check_unlocked()
590 oa_timestamp(stream, report)) in oa_buffer_check_unlocked()
597 __ratelimit(&stream->perf->tail_pointer_race)) in oa_buffer_check_unlocked()
598 drm_notice(&stream->uncore->i915->drm, in oa_buffer_check_unlocked()
600 stream->oa_buffer.head, tail, hw_tail); in oa_buffer_check_unlocked()
602 stream->oa_buffer.tail = tail; in oa_buffer_check_unlocked()
604 pollin = OA_TAKEN(stream->oa_buffer.tail, in oa_buffer_check_unlocked()
605 stream->oa_buffer.head) >= report_size; in oa_buffer_check_unlocked()
607 spin_unlock_irqrestore(&stream->oa_buffer.ptr_lock, flags); in oa_buffer_check_unlocked()
614 * @stream: An i915-perf stream opened for OA metrics
627 static int append_oa_status(struct i915_perf_stream *stream, in append_oa_status() argument
648 * @stream: An i915-perf stream opened for OA metrics
655 * properties when opening a stream, tracked as `stream->sample_flags`. This
663 static int append_oa_sample(struct i915_perf_stream *stream, in append_oa_sample() argument
669 int report_size = stream->oa_buffer.format->size; in append_oa_sample()
676 header.size = stream->sample_size; in append_oa_sample()
686 oa_buf_end = stream->oa_buffer.vaddr + OA_BUFFER_SIZE; in append_oa_sample()
694 if (copy_to_user(buf, stream->oa_buffer.vaddr, in append_oa_sample()
709 * @stream: An i915-perf stream opened for OA metrics
727 static int gen8_append_oa_reports(struct i915_perf_stream *stream, in gen8_append_oa_reports() argument
732 struct intel_uncore *uncore = stream->uncore; in gen8_append_oa_reports()
733 int report_size = stream->oa_buffer.format->size; in gen8_append_oa_reports()
734 u8 *oa_buf_base = stream->oa_buffer.vaddr; in gen8_append_oa_reports()
735 u32 gtt_offset = i915_ggtt_offset(stream->oa_buffer.vma); in gen8_append_oa_reports()
742 if (drm_WARN_ON(&uncore->i915->drm, !stream->enabled)) in gen8_append_oa_reports()
745 spin_lock_irqsave(&stream->oa_buffer.ptr_lock, flags); in gen8_append_oa_reports()
747 head = stream->oa_buffer.head; in gen8_append_oa_reports()
748 tail = stream->oa_buffer.tail; in gen8_append_oa_reports()
750 spin_unlock_irqrestore(&stream->oa_buffer.ptr_lock, flags); in gen8_append_oa_reports()
779 reason = oa_report_reason(stream, report); in gen8_append_oa_reports()
780 ctx_id = oa_context_id(stream, report32); in gen8_append_oa_reports()
822 if (oa_report_ctx_invalid(stream, report) && in gen8_append_oa_reports()
823 GRAPHICS_VER_FULL(stream->engine->i915) < IP_VER(12, 55)) { in gen8_append_oa_reports()
825 oa_context_id_squash(stream, report32); in gen8_append_oa_reports()
859 if (!stream->ctx || in gen8_append_oa_reports()
860 stream->specific_ctx_id == ctx_id || in gen8_append_oa_reports()
861 stream->oa_buffer.last_ctx_id == stream->specific_ctx_id || in gen8_append_oa_reports()
868 if (stream->ctx && in gen8_append_oa_reports()
869 stream->specific_ctx_id != ctx_id) { in gen8_append_oa_reports()
870 oa_context_id_squash(stream, report32); in gen8_append_oa_reports()
873 ret = append_oa_sample(stream, buf, count, offset, in gen8_append_oa_reports()
878 stream->oa_buffer.last_ctx_id = ctx_id; in gen8_append_oa_reports()
886 oa_report_id_clear(stream, report32); in gen8_append_oa_reports()
887 oa_timestamp_clear(stream, report32); in gen8_append_oa_reports()
889 u8 *oa_buf_end = stream->oa_buffer.vaddr + in gen8_append_oa_reports()
906 oaheadptr = GRAPHICS_VER(stream->perf->i915) == 12 ? in gen8_append_oa_reports()
907 __oa_regs(stream)->oa_head_ptr : in gen8_append_oa_reports()
910 spin_lock_irqsave(&stream->oa_buffer.ptr_lock, flags); in gen8_append_oa_reports()
918 stream->oa_buffer.head = head; in gen8_append_oa_reports()
920 spin_unlock_irqrestore(&stream->oa_buffer.ptr_lock, flags); in gen8_append_oa_reports()
928 * @stream: An i915-perf stream opened for OA metrics
946 static int gen8_oa_read(struct i915_perf_stream *stream, in gen8_oa_read() argument
951 struct intel_uncore *uncore = stream->uncore; in gen8_oa_read()
956 if (drm_WARN_ON(&uncore->i915->drm, !stream->oa_buffer.vaddr)) in gen8_oa_read()
959 oastatus_reg = GRAPHICS_VER(stream->perf->i915) == 12 ? in gen8_oa_read()
960 __oa_regs(stream)->oa_status : in gen8_oa_read()
980 ret = append_oa_status(stream, buf, count, offset, in gen8_oa_read()
985 drm_dbg(&stream->perf->i915->drm, in gen8_oa_read()
987 stream->period_exponent); in gen8_oa_read()
989 stream->perf->ops.oa_disable(stream); in gen8_oa_read()
990 stream->perf->ops.oa_enable(stream); in gen8_oa_read()
1000 ret = append_oa_status(stream, buf, count, offset, in gen8_oa_read()
1013 return gen8_append_oa_reports(stream, buf, count, offset); in gen8_oa_read()
1019 * @stream: An i915-perf stream opened for OA metrics
1037 static int gen7_append_oa_reports(struct i915_perf_stream *stream, in gen7_append_oa_reports() argument
1042 struct intel_uncore *uncore = stream->uncore; in gen7_append_oa_reports()
1043 int report_size = stream->oa_buffer.format->size; in gen7_append_oa_reports()
1044 u8 *oa_buf_base = stream->oa_buffer.vaddr; in gen7_append_oa_reports()
1045 u32 gtt_offset = i915_ggtt_offset(stream->oa_buffer.vma); in gen7_append_oa_reports()
1052 if (drm_WARN_ON(&uncore->i915->drm, !stream->enabled)) in gen7_append_oa_reports()
1055 spin_lock_irqsave(&stream->oa_buffer.ptr_lock, flags); in gen7_append_oa_reports()
1057 head = stream->oa_buffer.head; in gen7_append_oa_reports()
1058 tail = stream->oa_buffer.tail; in gen7_append_oa_reports()
1060 spin_unlock_irqrestore(&stream->oa_buffer.ptr_lock, flags); in gen7_append_oa_reports()
1104 if (__ratelimit(&stream->perf->spurious_report_rs)) in gen7_append_oa_reports()
1110 ret = append_oa_sample(stream, buf, count, offset, report); in gen7_append_oa_reports()
1122 spin_lock_irqsave(&stream->oa_buffer.ptr_lock, flags); in gen7_append_oa_reports()
1127 stream->oa_buffer.head = head; in gen7_append_oa_reports()
1129 spin_unlock_irqrestore(&stream->oa_buffer.ptr_lock, flags); in gen7_append_oa_reports()
1137 * @stream: An i915-perf stream opened for OA metrics
1151 static int gen7_oa_read(struct i915_perf_stream *stream, in gen7_oa_read() argument
1156 struct intel_uncore *uncore = stream->uncore; in gen7_oa_read()
1160 if (drm_WARN_ON(&uncore->i915->drm, !stream->oa_buffer.vaddr)) in gen7_oa_read()
1170 oastatus1 &= ~stream->perf->gen7_latched_oastatus1; in gen7_oa_read()
1193 ret = append_oa_status(stream, buf, count, offset, in gen7_oa_read()
1198 drm_dbg(&stream->perf->i915->drm, in gen7_oa_read()
1200 stream->period_exponent); in gen7_oa_read()
1202 stream->perf->ops.oa_disable(stream); in gen7_oa_read()
1203 stream->perf->ops.oa_enable(stream); in gen7_oa_read()
1209 ret = append_oa_status(stream, buf, count, offset, in gen7_oa_read()
1213 stream->perf->gen7_latched_oastatus1 |= in gen7_oa_read()
1217 return gen7_append_oa_reports(stream, buf, count, offset); in gen7_oa_read()
1222 * @stream: An i915-perf stream opened for OA metrics
1224 * Called when userspace tries to read() from a blocking stream FD opened
1234 static int i915_oa_wait_unlocked(struct i915_perf_stream *stream) in i915_oa_wait_unlocked() argument
1237 if (!stream->periodic) in i915_oa_wait_unlocked()
1240 return wait_event_interruptible(stream->poll_wq, in i915_oa_wait_unlocked()
1241 oa_buffer_check_unlocked(stream)); in i915_oa_wait_unlocked()
1245 * i915_oa_poll_wait - call poll_wait() for an OA stream poll()
1246 * @stream: An i915-perf stream opened for OA metrics
1247 * @file: An i915 perf stream file
1250 * For handling userspace polling on an i915 perf stream opened for OA metrics,
1254 static void i915_oa_poll_wait(struct i915_perf_stream *stream, in i915_oa_poll_wait() argument
1258 poll_wait(file, &stream->poll_wq, wait); in i915_oa_poll_wait()
1263 * @stream: An i915-perf stream opened for OA metrics
1273 static int i915_oa_read(struct i915_perf_stream *stream, in i915_oa_read() argument
1278 return stream->perf->ops.read(stream, buf, count, offset); in i915_oa_read()
1281 static struct intel_context *oa_pin_context(struct i915_perf_stream *stream) in oa_pin_context() argument
1284 struct i915_gem_context *ctx = stream->ctx; in oa_pin_context()
1290 if (ce->engine != stream->engine) /* first match! */ in oa_pin_context()
1318 stream->pinned_ctx = ce; in oa_pin_context()
1319 return stream->pinned_ctx; in oa_pin_context()
1413 static int gen12_get_render_context_id(struct i915_perf_stream *stream) in gen12_get_render_context_id() argument
1418 if (intel_engine_uses_guc(stream->engine)) { in gen12_get_render_context_id()
1419 ret = gen12_guc_sw_ctx_id(stream->pinned_ctx, &ctx_id); in gen12_get_render_context_id()
1425 } else if (GRAPHICS_VER_FULL(stream->engine->i915) >= IP_VER(12, 55)) { in gen12_get_render_context_id()
1438 stream->specific_ctx_id = ctx_id & mask; in gen12_get_render_context_id()
1439 stream->specific_ctx_id_mask = mask; in gen12_get_render_context_id()
1517 * @stream: An i915-perf stream opened for OA metrics
1520 * lifetime of the stream. This ensures that we don't have to worry about
1525 static int oa_get_render_ctx_id(struct i915_perf_stream *stream) in oa_get_render_ctx_id() argument
1530 ce = oa_pin_context(stream); in oa_get_render_ctx_id()
1534 if (engine_supports_mi_query(stream->engine) && in oa_get_render_ctx_id()
1535 HAS_LOGICAL_RING_CONTEXTS(stream->perf->i915)) { in oa_get_render_ctx_id()
1543 drm_err(&stream->perf->i915->drm, in oa_get_render_ctx_id()
1545 stream->engine->name); in oa_get_render_ctx_id()
1556 stream->specific_ctx_id = i915_ggtt_offset(ce->state); in oa_get_render_ctx_id()
1557 stream->specific_ctx_id_mask = 0; in oa_get_render_ctx_id()
1574 stream->specific_ctx_id = ce->lrc.lrca >> 12; in oa_get_render_ctx_id()
1580 stream->specific_ctx_id_mask = in oa_get_render_ctx_id()
1583 stream->specific_ctx_id_mask = in oa_get_render_ctx_id()
1585 stream->specific_ctx_id = stream->specific_ctx_id_mask; in oa_get_render_ctx_id()
1591 ret = gen12_get_render_context_id(stream); in oa_get_render_ctx_id()
1598 ce->tag = stream->specific_ctx_id; in oa_get_render_ctx_id()
1600 drm_dbg(&stream->perf->i915->drm, in oa_get_render_ctx_id()
1602 stream->specific_ctx_id, in oa_get_render_ctx_id()
1603 stream->specific_ctx_id_mask); in oa_get_render_ctx_id()
1610 * @stream: An i915-perf stream opened for OA metrics
1613 * for the lifetime of the stream, then that can be undone here.
1615 static void oa_put_render_ctx_id(struct i915_perf_stream *stream) in oa_put_render_ctx_id() argument
1619 ce = fetch_and_zero(&stream->pinned_ctx); in oa_put_render_ctx_id()
1625 stream->specific_ctx_id = INVALID_CTX_ID; in oa_put_render_ctx_id()
1626 stream->specific_ctx_id_mask = 0; in oa_put_render_ctx_id()
1630 free_oa_buffer(struct i915_perf_stream *stream) in free_oa_buffer() argument
1632 i915_vma_unpin_and_release(&stream->oa_buffer.vma, in free_oa_buffer()
1635 stream->oa_buffer.vaddr = NULL; in free_oa_buffer()
1639 free_oa_configs(struct i915_perf_stream *stream) in free_oa_configs() argument
1643 i915_oa_config_put(stream->oa_config); in free_oa_configs()
1644 llist_for_each_entry_safe(oa_bo, tmp, stream->oa_config_bos.first, node) in free_oa_configs()
1649 free_noa_wait(struct i915_perf_stream *stream) in free_noa_wait() argument
1651 i915_vma_unpin_and_release(&stream->noa_wait, 0); in free_noa_wait()
1664 static void i915_oa_stream_destroy(struct i915_perf_stream *stream) in i915_oa_stream_destroy() argument
1666 struct i915_perf *perf = stream->perf; in i915_oa_stream_destroy()
1667 struct intel_gt *gt = stream->engine->gt; in i915_oa_stream_destroy()
1668 struct i915_perf_group *g = stream->engine->oa_group; in i915_oa_stream_destroy()
1670 if (WARN_ON(stream != g->exclusive_stream)) in i915_oa_stream_destroy()
1680 perf->ops.disable_metric_set(stream); in i915_oa_stream_destroy()
1682 free_oa_buffer(stream); in i915_oa_stream_destroy()
1684 intel_uncore_forcewake_put(stream->uncore, FORCEWAKE_ALL); in i915_oa_stream_destroy()
1685 intel_engine_pm_put(stream->engine); in i915_oa_stream_destroy()
1687 if (stream->ctx) in i915_oa_stream_destroy()
1688 oa_put_render_ctx_id(stream); in i915_oa_stream_destroy()
1690 free_oa_configs(stream); in i915_oa_stream_destroy()
1691 free_noa_wait(stream); in i915_oa_stream_destroy()
1699 static void gen7_init_oa_buffer(struct i915_perf_stream *stream) in gen7_init_oa_buffer() argument
1701 struct intel_uncore *uncore = stream->uncore; in gen7_init_oa_buffer()
1702 u32 gtt_offset = i915_ggtt_offset(stream->oa_buffer.vma); in gen7_init_oa_buffer()
1705 spin_lock_irqsave(&stream->oa_buffer.ptr_lock, flags); in gen7_init_oa_buffer()
1712 stream->oa_buffer.head = 0; in gen7_init_oa_buffer()
1720 stream->oa_buffer.tail = 0; in gen7_init_oa_buffer()
1722 spin_unlock_irqrestore(&stream->oa_buffer.ptr_lock, flags); in gen7_init_oa_buffer()
1728 stream->perf->gen7_latched_oastatus1 = 0; in gen7_init_oa_buffer()
1733 * when re-enabling a stream or in error/reset paths. in gen7_init_oa_buffer()
1741 memset(stream->oa_buffer.vaddr, 0, OA_BUFFER_SIZE); in gen7_init_oa_buffer()
1744 static void gen8_init_oa_buffer(struct i915_perf_stream *stream) in gen8_init_oa_buffer() argument
1746 struct intel_uncore *uncore = stream->uncore; in gen8_init_oa_buffer()
1747 u32 gtt_offset = i915_ggtt_offset(stream->oa_buffer.vma); in gen8_init_oa_buffer()
1750 spin_lock_irqsave(&stream->oa_buffer.ptr_lock, flags); in gen8_init_oa_buffer()
1754 stream->oa_buffer.head = 0; in gen8_init_oa_buffer()
1771 stream->oa_buffer.tail = 0; in gen8_init_oa_buffer()
1778 stream->oa_buffer.last_ctx_id = INVALID_CTX_ID; in gen8_init_oa_buffer()
1780 spin_unlock_irqrestore(&stream->oa_buffer.ptr_lock, flags); in gen8_init_oa_buffer()
1786 * when re-enabling a stream or in error/reset paths. in gen8_init_oa_buffer()
1794 memset(stream->oa_buffer.vaddr, 0, OA_BUFFER_SIZE); in gen8_init_oa_buffer()
1797 static void gen12_init_oa_buffer(struct i915_perf_stream *stream) in gen12_init_oa_buffer() argument
1799 struct intel_uncore *uncore = stream->uncore; in gen12_init_oa_buffer()
1800 u32 gtt_offset = i915_ggtt_offset(stream->oa_buffer.vma); in gen12_init_oa_buffer()
1803 spin_lock_irqsave(&stream->oa_buffer.ptr_lock, flags); in gen12_init_oa_buffer()
1805 intel_uncore_write(uncore, __oa_regs(stream)->oa_status, 0); in gen12_init_oa_buffer()
1806 intel_uncore_write(uncore, __oa_regs(stream)->oa_head_ptr, in gen12_init_oa_buffer()
1808 stream->oa_buffer.head = 0; in gen12_init_oa_buffer()
1818 intel_uncore_write(uncore, __oa_regs(stream)->oa_buffer, gtt_offset | in gen12_init_oa_buffer()
1820 intel_uncore_write(uncore, __oa_regs(stream)->oa_tail_ptr, in gen12_init_oa_buffer()
1824 stream->oa_buffer.tail = 0; in gen12_init_oa_buffer()
1831 stream->oa_buffer.last_ctx_id = INVALID_CTX_ID; in gen12_init_oa_buffer()
1833 spin_unlock_irqrestore(&stream->oa_buffer.ptr_lock, flags); in gen12_init_oa_buffer()
1839 * when re-enabling a stream or in error/reset paths. in gen12_init_oa_buffer()
1847 memset(stream->oa_buffer.vaddr, 0, in gen12_init_oa_buffer()
1848 stream->oa_buffer.vma->size); in gen12_init_oa_buffer()
1851 static int alloc_oa_buffer(struct i915_perf_stream *stream) in alloc_oa_buffer() argument
1853 struct drm_i915_private *i915 = stream->perf->i915; in alloc_oa_buffer()
1854 struct intel_gt *gt = stream->engine->gt; in alloc_oa_buffer()
1859 if (drm_WARN_ON(&i915->drm, stream->oa_buffer.vma)) in alloc_oa_buffer()
1865 bo = i915_gem_object_create_shmem(stream->perf->i915, OA_BUFFER_SIZE); in alloc_oa_buffer()
1890 stream->oa_buffer.vma = vma; in alloc_oa_buffer()
1892 stream->oa_buffer.vaddr = in alloc_oa_buffer()
1894 if (IS_ERR(stream->oa_buffer.vaddr)) { in alloc_oa_buffer()
1895 ret = PTR_ERR(stream->oa_buffer.vaddr); in alloc_oa_buffer()
1907 stream->oa_buffer.vaddr = NULL; in alloc_oa_buffer()
1908 stream->oa_buffer.vma = NULL; in alloc_oa_buffer()
1913 static u32 *save_restore_register(struct i915_perf_stream *stream, u32 *cs, in save_restore_register() argument
1922 if (GRAPHICS_VER(stream->perf->i915) >= 8) in save_restore_register()
1928 *cs++ = i915_ggtt_offset(stream->noa_wait) + offset + 4 * d; in save_restore_register()
1935 static int alloc_noa_wait(struct i915_perf_stream *stream) in alloc_noa_wait() argument
1937 struct drm_i915_private *i915 = stream->perf->i915; in alloc_noa_wait()
1938 struct intel_gt *gt = stream->engine->gt; in alloc_noa_wait()
1942 intel_gt_ns_to_clock_interval(to_gt(stream->perf->i915), in alloc_noa_wait()
1943 atomic64_read(&stream->perf->noa_programming_delay)); in alloc_noa_wait()
1944 const u32 base = stream->engine->mmio_base; in alloc_noa_wait()
1983 * needs to be fixed during the lifetime of the i915/perf stream. in alloc_noa_wait()
2001 stream->noa_wait = vma; in alloc_noa_wait()
2009 stream, cs, true /* save */, CS_GPR(i), in alloc_noa_wait()
2012 stream, cs, true /* save */, mi_predicate_result, in alloc_noa_wait()
2128 stream, cs, false /* restore */, CS_GPR(i), in alloc_noa_wait()
2131 stream, cs, false /* restore */, mi_predicate_result, in alloc_noa_wait()
2192 alloc_oa_config_buffer(struct i915_perf_stream *stream, in alloc_oa_config_buffer() argument
2212 obj = i915_gem_object_create_shmem(stream->perf->i915, config_length); in alloc_oa_config_buffer()
2241 *cs++ = (GRAPHICS_VER(stream->perf->i915) < 8 ? in alloc_oa_config_buffer()
2244 *cs++ = i915_ggtt_offset(stream->noa_wait); in alloc_oa_config_buffer()
2251 &stream->engine->gt->ggtt->vm, in alloc_oa_config_buffer()
2259 llist_add(&oa_bo->node, &stream->oa_config_bos); in alloc_oa_config_buffer()
2280 get_oa_vma(struct i915_perf_stream *stream, struct i915_oa_config *oa_config) in get_oa_vma() argument
2286 * to the stream. in get_oa_vma()
2288 llist_for_each_entry(oa_bo, stream->oa_config_bos.first, node) { in get_oa_vma()
2296 oa_bo = alloc_oa_config_buffer(stream, oa_config); in get_oa_vma()
2305 emit_oa_config(struct i915_perf_stream *stream, in emit_oa_config() argument
2315 vma = get_oa_vma(stream, oa_config); in emit_oa_config()
2375 static struct intel_context *oa_context(struct i915_perf_stream *stream) in oa_context() argument
2377 return stream->pinned_ctx ?: stream->engine->kernel_context; in oa_context()
2381 hsw_enable_metric_set(struct i915_perf_stream *stream, in hsw_enable_metric_set() argument
2384 struct intel_uncore *uncore = stream->uncore; in hsw_enable_metric_set()
2401 return emit_oa_config(stream, in hsw_enable_metric_set()
2402 stream->oa_config, oa_context(stream), in hsw_enable_metric_set()
2406 static void hsw_disable_metric_set(struct i915_perf_stream *stream) in hsw_disable_metric_set() argument
2408 struct intel_uncore *uncore = stream->uncore; in hsw_disable_metric_set()
2448 const struct i915_perf_stream *stream) in gen8_update_reg_state_unlocked() argument
2450 u32 ctx_oactxctrl = stream->perf->ctx_oactxctrl_offset; in gen8_update_reg_state_unlocked()
2451 u32 ctx_flexeu0 = stream->perf->ctx_flexeu0_offset; in gen8_update_reg_state_unlocked()
2466 (stream->period_exponent << GEN8_OA_TIMER_PERIOD_SHIFT) | in gen8_update_reg_state_unlocked()
2467 (stream->periodic ? GEN8_OA_TIMER_ENABLE : 0) | in gen8_update_reg_state_unlocked()
2472 oa_config_flex_reg(stream->oa_config, flex_regs[i]); in gen8_update_reg_state_unlocked()
2579 static int gen8_configure_context(struct i915_perf_stream *stream, in gen8_configure_context() argument
2609 static int gen12_configure_oar_context(struct i915_perf_stream *stream, in gen12_configure_oar_context() argument
2613 struct intel_context *ce = stream->pinned_ctx; in gen12_configure_oar_context()
2614 u32 format = stream->oa_buffer.format->format; in gen12_configure_oar_context()
2615 u32 offset = stream->perf->ctx_oactxctrl_offset; in gen12_configure_oar_context()
2660 * Manages updating the per-context aspects of the OA stream
2685 oa_configure_all_contexts(struct i915_perf_stream *stream, in oa_configure_all_contexts() argument
2690 struct drm_i915_private *i915 = stream->perf->i915; in oa_configure_all_contexts()
2692 struct intel_gt *gt = stream->engine->gt; in oa_configure_all_contexts()
2721 err = gen8_configure_context(stream, ctx, regs, num_regs); in oa_configure_all_contexts()
2755 lrc_configure_all_contexts(struct i915_perf_stream *stream, in lrc_configure_all_contexts() argument
2759 u32 ctx_oactxctrl = stream->perf->ctx_oactxctrl_offset; in lrc_configure_all_contexts()
2761 const u32 ctx_flexeu0 = stream->perf->ctx_flexeu0_offset; in lrc_configure_all_contexts()
2784 (stream->period_exponent << GEN8_OA_TIMER_PERIOD_SHIFT) | in lrc_configure_all_contexts()
2785 (stream->periodic ? GEN8_OA_TIMER_ENABLE : 0) | in lrc_configure_all_contexts()
2791 return oa_configure_all_contexts(stream, in lrc_configure_all_contexts()
2797 gen8_enable_metric_set(struct i915_perf_stream *stream, in gen8_enable_metric_set() argument
2800 struct intel_uncore *uncore = stream->uncore; in gen8_enable_metric_set()
2801 struct i915_oa_config *oa_config = stream->oa_config; in gen8_enable_metric_set()
2827 if (IS_GRAPHICS_VER(stream->perf->i915, 9, 11)) { in gen8_enable_metric_set()
2838 ret = lrc_configure_all_contexts(stream, oa_config, active); in gen8_enable_metric_set()
2842 return emit_oa_config(stream, in gen8_enable_metric_set()
2843 stream->oa_config, oa_context(stream), in gen8_enable_metric_set()
2847 static u32 oag_report_ctx_switches(const struct i915_perf_stream *stream) in oag_report_ctx_switches() argument
2850 (stream->sample_flags & SAMPLE_OA_REPORT) ? in oag_report_ctx_switches()
2855 gen12_enable_metric_set(struct i915_perf_stream *stream, in gen12_enable_metric_set() argument
2858 struct drm_i915_private *i915 = stream->perf->i915; in gen12_enable_metric_set()
2859 struct intel_uncore *uncore = stream->uncore; in gen12_enable_metric_set()
2860 bool periodic = stream->periodic; in gen12_enable_metric_set()
2861 u32 period_exponent = stream->period_exponent; in gen12_enable_metric_set()
2877 intel_uncore_write(uncore, __oa_regs(stream)->oa_debug, in gen12_enable_metric_set()
2885 oag_report_ctx_switches(stream)); in gen12_enable_metric_set()
2887 intel_uncore_write(uncore, __oa_regs(stream)->oa_ctx_ctrl, periodic ? in gen12_enable_metric_set()
2908 if (stream->ctx) { in gen12_enable_metric_set()
2909 ret = gen12_configure_oar_context(stream, active); in gen12_enable_metric_set()
2914 return emit_oa_config(stream, in gen12_enable_metric_set()
2915 stream->oa_config, oa_context(stream), in gen12_enable_metric_set()
2919 static void gen8_disable_metric_set(struct i915_perf_stream *stream) in gen8_disable_metric_set() argument
2921 struct intel_uncore *uncore = stream->uncore; in gen8_disable_metric_set()
2924 lrc_configure_all_contexts(stream, NULL, NULL); in gen8_disable_metric_set()
2929 static void gen11_disable_metric_set(struct i915_perf_stream *stream) in gen11_disable_metric_set() argument
2931 struct intel_uncore *uncore = stream->uncore; in gen11_disable_metric_set()
2934 lrc_configure_all_contexts(stream, NULL, NULL); in gen11_disable_metric_set()
2940 static void gen12_disable_metric_set(struct i915_perf_stream *stream) in gen12_disable_metric_set() argument
2942 struct intel_uncore *uncore = stream->uncore; in gen12_disable_metric_set()
2943 struct drm_i915_private *i915 = stream->perf->i915; in gen12_disable_metric_set()
2957 if (stream->ctx) in gen12_disable_metric_set()
2958 gen12_configure_oar_context(stream, NULL); in gen12_disable_metric_set()
2970 static void gen7_oa_enable(struct i915_perf_stream *stream) in gen7_oa_enable() argument
2972 struct intel_uncore *uncore = stream->uncore; in gen7_oa_enable()
2973 struct i915_gem_context *ctx = stream->ctx; in gen7_oa_enable()
2974 u32 ctx_id = stream->specific_ctx_id; in gen7_oa_enable()
2975 bool periodic = stream->periodic; in gen7_oa_enable()
2976 u32 period_exponent = stream->period_exponent; in gen7_oa_enable()
2977 u32 report_format = stream->oa_buffer.format->format; in gen7_oa_enable()
2988 gen7_init_oa_buffer(stream); in gen7_oa_enable()
3000 static void gen8_oa_enable(struct i915_perf_stream *stream) in gen8_oa_enable() argument
3002 struct intel_uncore *uncore = stream->uncore; in gen8_oa_enable()
3003 u32 report_format = stream->oa_buffer.format->format; in gen8_oa_enable()
3014 gen8_init_oa_buffer(stream); in gen8_oa_enable()
3026 static void gen12_oa_enable(struct i915_perf_stream *stream) in gen12_oa_enable() argument
3035 if (!(stream->sample_flags & SAMPLE_OA_REPORT)) in gen12_oa_enable()
3038 gen12_init_oa_buffer(stream); in gen12_oa_enable()
3040 regs = __oa_regs(stream); in gen12_oa_enable()
3041 val = (stream->oa_buffer.format->format << regs->oa_ctrl_counter_format_shift) | in gen12_oa_enable()
3044 intel_uncore_write(stream->uncore, regs->oa_ctrl, val); in gen12_oa_enable()
3048 * i915_oa_stream_enable - handle `I915_PERF_IOCTL_ENABLE` for OA stream
3049 * @stream: An i915 perf stream opened for OA metrics
3052 * when opening the stream. This also starts a hrtimer that will periodically
3056 static void i915_oa_stream_enable(struct i915_perf_stream *stream) in i915_oa_stream_enable() argument
3058 stream->pollin = false; in i915_oa_stream_enable()
3060 stream->perf->ops.oa_enable(stream); in i915_oa_stream_enable()
3062 if (stream->sample_flags & SAMPLE_OA_REPORT) in i915_oa_stream_enable()
3063 hrtimer_start(&stream->poll_check_timer, in i915_oa_stream_enable()
3064 ns_to_ktime(stream->poll_oa_period), in i915_oa_stream_enable()
3068 static void gen7_oa_disable(struct i915_perf_stream *stream) in gen7_oa_disable() argument
3070 struct intel_uncore *uncore = stream->uncore; in gen7_oa_disable()
3076 drm_err(&stream->perf->i915->drm, in gen7_oa_disable()
3080 static void gen8_oa_disable(struct i915_perf_stream *stream) in gen8_oa_disable() argument
3082 struct intel_uncore *uncore = stream->uncore; in gen8_oa_disable()
3088 drm_err(&stream->perf->i915->drm, in gen8_oa_disable()
3092 static void gen12_oa_disable(struct i915_perf_stream *stream) in gen12_oa_disable() argument
3094 struct intel_uncore *uncore = stream->uncore; in gen12_oa_disable()
3096 intel_uncore_write(uncore, __oa_regs(stream)->oa_ctrl, 0); in gen12_oa_disable()
3098 __oa_regs(stream)->oa_ctrl, in gen12_oa_disable()
3101 drm_err(&stream->perf->i915->drm, in gen12_oa_disable()
3109 drm_err(&stream->perf->i915->drm, in gen12_oa_disable()
3114 * i915_oa_stream_disable - handle `I915_PERF_IOCTL_DISABLE` for OA stream
3115 * @stream: An i915 perf stream opened for OA metrics
3121 static void i915_oa_stream_disable(struct i915_perf_stream *stream) in i915_oa_stream_disable() argument
3123 stream->perf->ops.oa_disable(stream); in i915_oa_stream_disable()
3125 if (stream->sample_flags & SAMPLE_OA_REPORT) in i915_oa_stream_disable()
3126 hrtimer_cancel(&stream->poll_check_timer); in i915_oa_stream_disable()
3138 static int i915_perf_stream_enable_sync(struct i915_perf_stream *stream) in i915_perf_stream_enable_sync() argument
3147 err = stream->perf->ops.enable_metric_set(stream, active); in i915_perf_stream_enable_sync()
3214 * i915_oa_stream_init - validate combined props for OA stream and init
3215 * @stream: An i915 perf stream
3217 * @props: The property state that configures stream (individually validated)
3222 * At this point it has been determined that userspace wants a stream of
3231 static int i915_oa_stream_init(struct i915_perf_stream *stream, in i915_oa_stream_init() argument
3235 struct drm_i915_private *i915 = stream->perf->i915; in i915_oa_stream_init()
3236 struct i915_perf *perf = stream->perf; in i915_oa_stream_init()
3241 drm_dbg(&stream->perf->i915->drm, in i915_oa_stream_init()
3253 drm_dbg(&stream->perf->i915->drm, in i915_oa_stream_init()
3259 (GRAPHICS_VER(perf->i915) < 12 || !stream->ctx)) { in i915_oa_stream_init()
3260 drm_dbg(&stream->perf->i915->drm, in i915_oa_stream_init()
3266 drm_dbg(&stream->perf->i915->drm, in i915_oa_stream_init()
3277 drm_dbg(&stream->perf->i915->drm, in i915_oa_stream_init()
3283 drm_dbg(&stream->perf->i915->drm, in i915_oa_stream_init()
3288 stream->engine = props->engine; in i915_oa_stream_init()
3289 stream->uncore = stream->engine->gt->uncore; in i915_oa_stream_init()
3291 stream->sample_size = sizeof(struct drm_i915_perf_record_header); in i915_oa_stream_init()
3293 stream->oa_buffer.format = &perf->oa_formats[props->oa_format]; in i915_oa_stream_init()
3294 if (drm_WARN_ON(&i915->drm, stream->oa_buffer.format->size == 0)) in i915_oa_stream_init()
3297 stream->sample_flags = props->sample_flags; in i915_oa_stream_init()
3298 stream->sample_size += stream->oa_buffer.format->size; in i915_oa_stream_init()
3300 stream->hold_preemption = props->hold_preemption; in i915_oa_stream_init()
3302 stream->periodic = props->oa_periodic; in i915_oa_stream_init()
3303 if (stream->periodic) in i915_oa_stream_init()
3304 stream->period_exponent = props->oa_period_exponent; in i915_oa_stream_init()
3306 if (stream->ctx) { in i915_oa_stream_init()
3307 ret = oa_get_render_ctx_id(stream); in i915_oa_stream_init()
3309 drm_dbg(&stream->perf->i915->drm, in i915_oa_stream_init()
3315 ret = alloc_noa_wait(stream); in i915_oa_stream_init()
3317 drm_dbg(&stream->perf->i915->drm, in i915_oa_stream_init()
3322 stream->oa_config = i915_perf_get_oa_config(perf, props->metrics_set); in i915_oa_stream_init()
3323 if (!stream->oa_config) { in i915_oa_stream_init()
3324 drm_dbg(&stream->perf->i915->drm, in i915_oa_stream_init()
3342 intel_engine_pm_get(stream->engine); in i915_oa_stream_init()
3343 intel_uncore_forcewake_get(stream->uncore, FORCEWAKE_ALL); in i915_oa_stream_init()
3345 ret = alloc_oa_buffer(stream); in i915_oa_stream_init()
3349 stream->ops = &i915_oa_stream_ops; in i915_oa_stream_init()
3351 stream->engine->gt->perf.sseu = props->sseu; in i915_oa_stream_init()
3352 WRITE_ONCE(g->exclusive_stream, stream); in i915_oa_stream_init()
3354 ret = i915_perf_stream_enable_sync(stream); in i915_oa_stream_init()
3356 drm_dbg(&stream->perf->i915->drm, in i915_oa_stream_init()
3361 drm_dbg(&stream->perf->i915->drm, in i915_oa_stream_init()
3362 "opening stream oa config uuid=%s\n", in i915_oa_stream_init()
3363 stream->oa_config->uuid); in i915_oa_stream_init()
3365 hrtimer_setup(&stream->poll_check_timer, oa_poll_check_timer_cb, CLOCK_MONOTONIC, in i915_oa_stream_init()
3367 init_waitqueue_head(&stream->poll_wq); in i915_oa_stream_init()
3368 spin_lock_init(&stream->oa_buffer.ptr_lock); in i915_oa_stream_init()
3369 mutex_init(&stream->lock); in i915_oa_stream_init()
3375 perf->ops.disable_metric_set(stream); in i915_oa_stream_init()
3377 free_oa_buffer(stream); in i915_oa_stream_init()
3380 intel_uncore_forcewake_put(stream->uncore, FORCEWAKE_ALL); in i915_oa_stream_init()
3381 intel_engine_pm_put(stream->engine); in i915_oa_stream_init()
3383 free_oa_configs(stream); in i915_oa_stream_init()
3386 free_noa_wait(stream); in i915_oa_stream_init()
3389 if (stream->ctx) in i915_oa_stream_init()
3390 oa_put_render_ctx_id(stream); in i915_oa_stream_init()
3398 struct i915_perf_stream *stream; in i915_oa_init_reg_state() local
3404 stream = READ_ONCE(engine->oa_group->exclusive_stream); in i915_oa_init_reg_state()
3405 if (stream && GRAPHICS_VER(stream->perf->i915) < 12) in i915_oa_init_reg_state()
3406 gen8_update_reg_state_unlocked(ce, stream); in i915_oa_init_reg_state()
3410 * i915_perf_read - handles read() FOP for i915 perf stream FDs
3411 * @file: An i915 perf stream file
3416 * The entry point for handling a read() on a stream file descriptor from
3418 * &i915_perf_stream_ops->read but to save having stream implementations (of
3421 * We can also consistently treat trying to read from a disabled stream
3422 * as an IO error so implementations can assume the stream is enabled
3432 struct i915_perf_stream *stream = file->private_data; in i915_perf_read() local
3437 * disabled stream as an error. In particular it might otherwise lead in i915_perf_read()
3440 if (!stream->enabled || !(stream->sample_flags & SAMPLE_OA_REPORT)) in i915_perf_read()
3445 * stream->ops->wait_unlocked. in i915_perf_read()
3452 ret = stream->ops->wait_unlocked(stream); in i915_perf_read()
3456 mutex_lock(&stream->lock); in i915_perf_read()
3457 ret = stream->ops->read(stream, buf, count, &offset); in i915_perf_read()
3458 mutex_unlock(&stream->lock); in i915_perf_read()
3461 mutex_lock(&stream->lock); in i915_perf_read()
3462 ret = stream->ops->read(stream, buf, count, &offset); in i915_perf_read()
3463 mutex_unlock(&stream->lock); in i915_perf_read()
3478 stream->pollin = false; in i915_perf_read()
3486 struct i915_perf_stream *stream = in oa_poll_check_timer_cb() local
3487 container_of(hrtimer, typeof(*stream), poll_check_timer); in oa_poll_check_timer_cb()
3489 if (oa_buffer_check_unlocked(stream)) { in oa_poll_check_timer_cb()
3490 stream->pollin = true; in oa_poll_check_timer_cb()
3491 wake_up(&stream->poll_wq); in oa_poll_check_timer_cb()
3495 ns_to_ktime(stream->poll_oa_period)); in oa_poll_check_timer_cb()
3501 * i915_perf_poll_locked - poll_wait() with a suitable wait queue for stream
3502 * @stream: An i915 perf stream
3503 * @file: An i915 perf stream file
3506 * For handling userspace polling on an i915 perf stream, this calls through to
3508 * will be woken for new stream data.
3512 static __poll_t i915_perf_poll_locked(struct i915_perf_stream *stream, in i915_perf_poll_locked() argument
3518 stream->ops->poll_wait(stream, file, wait); in i915_perf_poll_locked()
3526 if (stream->pollin) in i915_perf_poll_locked()
3533 * i915_perf_poll - call poll_wait() with a suitable wait queue for stream
3534 * @file: An i915 perf stream file
3537 * For handling userspace polling on an i915 perf stream, this ensures
3538 * poll_wait() gets called with a wait queue that will be woken for new stream
3547 struct i915_perf_stream *stream = file->private_data; in i915_perf_poll() local
3550 mutex_lock(&stream->lock); in i915_perf_poll()
3551 ret = i915_perf_poll_locked(stream, file, wait); in i915_perf_poll()
3552 mutex_unlock(&stream->lock); in i915_perf_poll()
3559 * @stream: A disabled i915 perf stream
3561 * [Re]enables the associated capture of data for this stream.
3563 * If a stream was previously enabled then there's currently no intention
3567 static void i915_perf_enable_locked(struct i915_perf_stream *stream) in i915_perf_enable_locked() argument
3569 if (stream->enabled) in i915_perf_enable_locked()
3572 /* Allow stream->ops->enable() to refer to this */ in i915_perf_enable_locked()
3573 stream->enabled = true; in i915_perf_enable_locked()
3575 if (stream->ops->enable) in i915_perf_enable_locked()
3576 stream->ops->enable(stream); in i915_perf_enable_locked()
3578 if (stream->hold_preemption) in i915_perf_enable_locked()
3579 intel_context_set_nopreempt(stream->pinned_ctx); in i915_perf_enable_locked()
3584 * @stream: An enabled i915 perf stream
3586 * Disables the associated capture of data for this stream.
3588 * The intention is that disabling an re-enabling a stream will ideally be
3589 * cheaper than destroying and re-opening a stream with the same configuration,
3591 * must be retained between disabling and re-enabling a stream.
3593 * Note: while a stream is disabled it's considered an error for userspace
3594 * to attempt to read from the stream (-EIO).
3596 static void i915_perf_disable_locked(struct i915_perf_stream *stream) in i915_perf_disable_locked() argument
3598 if (!stream->enabled) in i915_perf_disable_locked()
3601 /* Allow stream->ops->disable() to refer to this */ in i915_perf_disable_locked()
3602 stream->enabled = false; in i915_perf_disable_locked()
3604 if (stream->hold_preemption) in i915_perf_disable_locked()
3605 intel_context_clear_nopreempt(stream->pinned_ctx); in i915_perf_disable_locked()
3607 if (stream->ops->disable) in i915_perf_disable_locked()
3608 stream->ops->disable(stream); in i915_perf_disable_locked()
3611 static long i915_perf_config_locked(struct i915_perf_stream *stream, in i915_perf_config_locked() argument
3615 long ret = stream->oa_config->id; in i915_perf_config_locked()
3617 config = i915_perf_get_oa_config(stream->perf, metrics_set); in i915_perf_config_locked()
3621 if (config != stream->oa_config) { in i915_perf_config_locked()
3633 err = emit_oa_config(stream, config, oa_context(stream), NULL); in i915_perf_config_locked()
3635 config = xchg(&stream->oa_config, config); in i915_perf_config_locked()
3646 * i915_perf_ioctl_locked - support ioctl() usage with i915 perf stream FDs
3647 * @stream: An i915 perf stream
3654 static long i915_perf_ioctl_locked(struct i915_perf_stream *stream, in i915_perf_ioctl_locked() argument
3660 i915_perf_enable_locked(stream); in i915_perf_ioctl_locked()
3663 i915_perf_disable_locked(stream); in i915_perf_ioctl_locked()
3666 return i915_perf_config_locked(stream, arg); in i915_perf_ioctl_locked()
3673 * i915_perf_ioctl - support ioctl() usage with i915 perf stream FDs
3674 * @file: An i915 perf stream file
3687 struct i915_perf_stream *stream = file->private_data; in i915_perf_ioctl() local
3690 mutex_lock(&stream->lock); in i915_perf_ioctl()
3691 ret = i915_perf_ioctl_locked(stream, cmd, arg); in i915_perf_ioctl()
3692 mutex_unlock(&stream->lock); in i915_perf_ioctl()
3698 * i915_perf_destroy_locked - destroy an i915 perf stream
3699 * @stream: An i915 perf stream
3701 * Frees all resources associated with the given i915 perf @stream, disabling
3707 static void i915_perf_destroy_locked(struct i915_perf_stream *stream) in i915_perf_destroy_locked() argument
3709 if (stream->enabled) in i915_perf_destroy_locked()
3710 i915_perf_disable_locked(stream); in i915_perf_destroy_locked()
3712 if (stream->ops->destroy) in i915_perf_destroy_locked()
3713 stream->ops->destroy(stream); in i915_perf_destroy_locked()
3715 if (stream->ctx) in i915_perf_destroy_locked()
3716 i915_gem_context_put(stream->ctx); in i915_perf_destroy_locked()
3718 kfree(stream); in i915_perf_destroy_locked()
3722 * i915_perf_release - handles userspace close() of a stream file
3724 * @file: An i915 perf stream file
3726 * Cleans up any resources associated with an open i915 perf stream file.
3734 struct i915_perf_stream *stream = file->private_data; in i915_perf_release() local
3735 struct i915_perf *perf = stream->perf; in i915_perf_release()
3736 struct intel_gt *gt = stream->engine->gt; in i915_perf_release()
3740 * other user of stream->lock. Use the perf lock to destroy the stream in i915_perf_release()
3744 i915_perf_destroy_locked(stream); in i915_perf_release()
3747 /* Release the reference the perf stream kept on the driver. */ in i915_perf_release()
3768 * i915_perf_open_ioctl_locked - DRM ioctl() for userspace to open a stream FD
3776 * Implements further stream config validation and stream initialization on
3785 * config validation and stream initialization details will be handled by
3787 * will be relevant to all stream types / backends.
3798 struct i915_perf_stream *stream = NULL; in i915_perf_open_ioctl_locked() local
3811 "Failed to look up context with ID %u for opening perf stream\n", in i915_perf_open_ioctl_locked()
3834 * doesn't request global stream access (i.e. query based sampling in i915_perf_open_ioctl_locked()
3869 "Insufficient privileges to open i915 perf stream\n"); in i915_perf_open_ioctl_locked()
3874 stream = kzalloc(sizeof(*stream), GFP_KERNEL); in i915_perf_open_ioctl_locked()
3875 if (!stream) { in i915_perf_open_ioctl_locked()
3880 stream->perf = perf; in i915_perf_open_ioctl_locked()
3881 stream->ctx = specific_ctx; in i915_perf_open_ioctl_locked()
3882 stream->poll_oa_period = props->poll_oa_period; in i915_perf_open_ioctl_locked()
3884 ret = i915_oa_stream_init(stream, param, props); in i915_perf_open_ioctl_locked()
3888 /* we avoid simply assigning stream->sample_flags = props->sample_flags in i915_perf_open_ioctl_locked()
3892 if (WARN_ON(stream->sample_flags != props->sample_flags)) { in i915_perf_open_ioctl_locked()
3902 stream_fd = anon_inode_getfd("[i915_perf]", &fops, stream, f_flags); in i915_perf_open_ioctl_locked()
3909 i915_perf_enable_locked(stream); in i915_perf_open_ioctl_locked()
3919 if (stream->ops->destroy) in i915_perf_open_ioctl_locked()
3920 stream->ops->destroy(stream); in i915_perf_open_ioctl_locked()
3922 kfree(stream); in i915_perf_open_ioctl_locked()
3951 * read_properties_unlocked - validate + copy userspace stream open properties
3955 * @props: The stream configuration built up while validating properties
3959 * properties necessary for a particular kind of stream have been set.
4193 * i915_perf_open_ioctl - DRM ioctl() for userspace to open a stream FD
4198 * Validates the stream open parameters given by userspace including flags
4201 * Very little is assumed up front about the nature of the stream being
4203 * i915-perf stream is expected to be a suitable interface for other forms of
4213 * Return: A newly opened i915 Perf stream file descriptor or negative
4260 * used to open an i915-perf stream.
4756 * and their content will be freed when the stream using the config is closed.
5149 * stream instead of waiting until driver _fini which no one in i915_perf_init()