Lines Matching +full:10 +full:base +full:- +full:te
1 // SPDX-License-Identifier: GPL-2.0-only
4 * Copyright (c) 2013-2014, Intel Corporation.
8 * http://software.intel.com/en-us/intel-isa-extensions
43 * width encoded in IP-related packets), and event configuration (bitmasks with
79 u32 c = caps[cd->leaf * PT_CPUID_REGS_NUM + cd->reg]; in intel_pt_validate_cap()
80 unsigned int shift = __ffs(cd->mask); in intel_pt_validate_cap()
82 return (c & cd->mask) >> shift; in intel_pt_validate_cap()
98 enum pt_capabilities cap = (long)ea->var; in pt_cap_show()
112 PMU_FORMAT_ATTR(tsc, "config:10" );
118 PMU_FORMAT_ATTR(mtc_period, "config:14-17" );
119 PMU_FORMAT_ATTR(cyc_thresh, "config:19-22" );
120 PMU_FORMAT_ATTR(psb_period, "config:24-27" );
152 switch (pmu_attr->id) { in pt_timing_attr_show()
163 return -EINVAL; in pt_timing_attr_show()
214 /* model-specific quirks */ in pt_pmu_hw_init()
229 * Intel SDM, 36.5 "Tracing post-VMXON" says that in pt_pmu_hw_init()
231 * post-VMXON. in pt_pmu_hw_init()
246 ret = -ENOMEM; in pt_pmu_hw_init()
260 de_attr->attr.attr.name = pt_caps[i].name; in pt_pmu_hw_init()
262 sysfs_attr_init(&de_attr->attr.attr); in pt_pmu_hw_init()
264 de_attr->attr.attr.mode = S_IRUGO; in pt_pmu_hw_init()
265 de_attr->attr.show = pt_cap_show; in pt_pmu_hw_init()
266 de_attr->var = (void *)i; in pt_pmu_hw_init()
268 attrs[i] = &de_attr->attr.attr; in pt_pmu_hw_init()
315 u64 config = event->attr.config; in pt_event_valid()
389 * Re-using bit 0 for this purpose is fine because it is never in pt_event_valid()
391 * the attr.config resulted in -EINVAL. in pt_event_valid()
420 u64 ctl = event->hw.aux_config; in pt_config_start()
422 if (READ_ONCE(event->hw.aux_paused)) in pt_config_start()
426 if (READ_ONCE(pt->vmx_on)) in pt_config_start()
427 perf_aux_output_flag(&pt->handle, PERF_AUX_FLAG_PARTIAL); in pt_config_start()
431 WRITE_ONCE(event->hw.aux_config, ctl); in pt_config_start()
464 struct pt_filters *filters = event->hw.addr_filters; in pt_config_filters()
474 for (range = 0; range < filters->nr_filters; range++) { in pt_config_filters()
475 struct pt_filter *filter = &filters->filter[range]; in pt_config_filters()
487 if (pt->filters.filter[range].msr_a != filter->msr_a) { in pt_config_filters()
488 wrmsrl(pt_address_ranges[range].msr_a, filter->msr_a); in pt_config_filters()
489 pt->filters.filter[range].msr_a = filter->msr_a; in pt_config_filters()
492 if (pt->filters.filter[range].msr_b != filter->msr_b) { in pt_config_filters()
493 wrmsrl(pt_address_ranges[range].msr_b, filter->msr_b); in pt_config_filters()
494 pt->filters.filter[range].msr_b = filter->msr_b; in pt_config_filters()
497 rtit_ctl |= (u64)filter->config << pt_address_ranges[range].reg_off; in pt_config_filters()
506 struct pt_buffer *buf = perf_get_aux(&pt->handle); in pt_config()
510 if (!event->hw.aux_config) { in pt_config()
517 if (!buf->single) in pt_config()
527 if (event->attr.config & BIT(0)) { in pt_config()
528 reg |= event->attr.config & RTIT_CTL_BRANCH_EN; in pt_config()
533 if (!event->attr.exclude_kernel) in pt_config()
535 if (!event->attr.exclude_user) in pt_config()
538 reg |= (event->attr.config & PT_CONFIG_MASK); in pt_config()
540 event->hw.aux_config = reg; in pt_config()
547 WRITE_ONCE(pt->resume_allowed, 1); in pt_config()
550 WRITE_ONCE(pt->handle_nmi, 1); in pt_config()
558 WRITE_ONCE(pt->pause_allowed, 1); in pt_config()
564 u64 ctl = READ_ONCE(event->hw.aux_config); in pt_config_stop()
571 if (!READ_ONCE(pt->vmx_on)) in pt_config_stop()
574 WRITE_ONCE(event->hw.aux_config, ctl); in pt_config_stop()
588 * struct topa - ToPA metadata
604 * Keep ToPA table-related metadata on the same page as the actual table,
609 ((PAGE_SIZE - sizeof(struct topa)) / sizeof(struct topa_entry))
612 * struct topa_page - page-sized ToPA table with metadata at the top
626 static inline struct topa_page *topa_entry_to_page(struct topa_entry *te) in topa_entry_to_page() argument
628 return (struct topa_page *)((unsigned long)te & PAGE_MASK); in topa_entry_to_page()
636 /* make -1 stand for the last table entry */
638 ((i) == -1 \
639 ? &topa_to_page(t)->table[(t)->last] \
640 : &topa_to_page(t)->table[(i)])
641 #define TOPA_ENTRY_SIZE(t, i) (sizes(TOPA_ENTRY((t), (i))->size))
642 #define TOPA_ENTRY_PAGES(t, i) (1 << TOPA_ENTRY((t), (i))->size)
648 void *base; in pt_config_buffer() local
650 if (buf->single) { in pt_config_buffer()
651 base = buf->data_pages[0]; in pt_config_buffer()
652 mask = (buf->nr_pages * PAGE_SIZE - 1) >> 7; in pt_config_buffer()
654 base = topa_to_page(buf->cur)->table; in pt_config_buffer()
655 mask = (u64)buf->cur_idx; in pt_config_buffer()
658 reg = virt_to_phys(base); in pt_config_buffer()
659 if (pt->output_base != reg) { in pt_config_buffer()
660 pt->output_base = reg; in pt_config_buffer()
664 reg = 0x7f | (mask << 7) | ((u64)buf->output_off << 32); in pt_config_buffer()
665 if (pt->output_mask != reg) { in pt_config_buffer()
666 pt->output_mask = reg; in pt_config_buffer()
672 * topa_alloc() - allocate page-sized ToPA table
689 tp->topa.last = 0; in topa_alloc()
692 * In case of singe-entry ToPA, always put the self-referencing END in topa_alloc()
696 TOPA_ENTRY(&tp->topa, 1)->base = page_to_phys(p) >> TOPA_SHIFT; in topa_alloc()
697 TOPA_ENTRY(&tp->topa, 1)->end = 1; in topa_alloc()
700 return &tp->topa; in topa_alloc()
704 * topa_free() - free a page-sized ToPA table
713 * topa_insert_table() - insert a ToPA table into a buffer
723 struct topa *last = buf->last; in topa_insert_table()
725 list_add_tail(&topa->list, &buf->tables); in topa_insert_table()
727 if (!buf->first) { in topa_insert_table()
728 buf->first = buf->last = buf->cur = topa; in topa_insert_table()
732 topa->offset = last->offset + last->size; in topa_insert_table()
733 buf->last = topa; in topa_insert_table()
738 BUG_ON(last->last != TENTS_PER_PAGE - 1); in topa_insert_table()
740 TOPA_ENTRY(last, -1)->base = topa_pfn(topa); in topa_insert_table()
741 TOPA_ENTRY(last, -1)->end = 1; in topa_insert_table()
745 * topa_table_full() - check if a ToPA table is filled up
750 /* single-entry ToPA is a special case */ in topa_table_full()
752 return !!topa->last; in topa_table_full()
754 return topa->last == TENTS_PER_PAGE - 1; in topa_table_full()
758 * topa_insert_pages() - create a list of ToPA tables
770 struct topa *topa = buf->last; in topa_insert_pages()
774 p = virt_to_page(buf->data_pages[buf->nr_pages]); in topa_insert_pages()
781 return -ENOMEM; in topa_insert_pages()
786 if (topa->z_count == topa->last - 1) { in topa_insert_pages()
787 if (order == TOPA_ENTRY(topa, topa->last - 1)->size) in topa_insert_pages()
788 topa->z_count++; in topa_insert_pages()
791 TOPA_ENTRY(topa, -1)->base = page_to_phys(p) >> TOPA_SHIFT; in topa_insert_pages()
792 TOPA_ENTRY(topa, -1)->size = order; in topa_insert_pages()
793 if (!buf->snapshot && in topa_insert_pages()
795 TOPA_ENTRY(topa, -1)->intr = 1; in topa_insert_pages()
796 TOPA_ENTRY(topa, -1)->stop = 1; in topa_insert_pages()
799 topa->last++; in topa_insert_pages()
800 topa->size += sizes(order); in topa_insert_pages()
802 buf->nr_pages += 1ul << order; in topa_insert_pages()
808 * pt_topa_dump() - print ToPA tables and their entries
815 list_for_each_entry(topa, &buf->tables, list) { in pt_topa_dump()
819 pr_debug("# table @%p, off %llx size %zx\n", tp->table, in pt_topa_dump()
820 topa->offset, topa->size); in pt_topa_dump()
823 &tp->table[i], in pt_topa_dump()
824 (unsigned long)tp->table[i].base << TOPA_SHIFT, in pt_topa_dump()
825 sizes(tp->table[i].size), in pt_topa_dump()
826 tp->table[i].end ? 'E' : ' ', in pt_topa_dump()
827 tp->table[i].intr ? 'I' : ' ', in pt_topa_dump()
828 tp->table[i].stop ? 'S' : ' ', in pt_topa_dump()
829 *(u64 *)&tp->table[i]); in pt_topa_dump()
831 tp->table[i].stop) || in pt_topa_dump()
832 tp->table[i].end) in pt_topa_dump()
834 if (!i && topa->z_count) in pt_topa_dump()
835 i += topa->z_count; in pt_topa_dump()
841 * pt_buffer_advance() - advance to the next output region
848 buf->output_off = 0; in pt_buffer_advance()
849 buf->cur_idx++; in pt_buffer_advance()
851 if (buf->cur_idx == buf->cur->last) { in pt_buffer_advance()
852 if (buf->cur == buf->last) { in pt_buffer_advance()
853 buf->cur = buf->first; in pt_buffer_advance()
854 buf->wrapped = true; in pt_buffer_advance()
856 buf->cur = list_entry(buf->cur->list.next, struct topa, in pt_buffer_advance()
859 buf->cur_idx = 0; in pt_buffer_advance()
864 * pt_update_head() - calculate current offsets and sizes
865 * @pt: Per-cpu pt context.
871 struct pt_buffer *buf = perf_get_aux(&pt->handle); in pt_update_head()
872 bool wrapped = buf->wrapped; in pt_update_head()
873 u64 topa_idx, base, old; in pt_update_head() local
875 buf->wrapped = false; in pt_update_head()
877 if (buf->single) { in pt_update_head()
878 local_set(&buf->data_size, buf->output_off); in pt_update_head()
883 base = buf->cur->offset + buf->output_off; in pt_update_head()
886 for (topa_idx = 0; topa_idx < buf->cur_idx; topa_idx++) in pt_update_head()
887 base += TOPA_ENTRY_SIZE(buf->cur, topa_idx); in pt_update_head()
889 if (buf->snapshot) { in pt_update_head()
890 local_set(&buf->data_size, base); in pt_update_head()
892 old = (local64_xchg(&buf->head, base) & in pt_update_head()
893 ((buf->nr_pages << PAGE_SHIFT) - 1)); in pt_update_head()
894 if (base < old || (base == old && wrapped)) in pt_update_head()
895 base += buf->nr_pages << PAGE_SHIFT; in pt_update_head()
897 local_add(base - old, &buf->data_size); in pt_update_head()
902 * pt_buffer_region() - obtain current output region's address
907 return phys_to_virt((phys_addr_t)TOPA_ENTRY(buf->cur, buf->cur_idx)->base << TOPA_SHIFT); in pt_buffer_region()
911 * pt_buffer_region_size() - obtain current output region's size
916 return TOPA_ENTRY_SIZE(buf->cur, buf->cur_idx); in pt_buffer_region_size()
920 * pt_handle_status() - take care of possible status conditions
921 * @pt: Per-cpu pt context.
925 struct pt_buffer *buf = perf_get_aux(&pt->handle); in pt_handle_status()
941 * On systems that only do single-entry ToPA, hitting STOP in pt_handle_status()
945 if (!buf->single && in pt_handle_status()
947 buf->output_off == pt_buffer_region_size(buf))) { in pt_handle_status()
948 perf_aux_output_flag(&pt->handle, in pt_handle_status()
955 * Also on single-entry ToPA implementations, interrupt will come in pt_handle_status()
959 !buf->snapshot && in pt_handle_status()
960 pt_buffer_region_size(buf) - buf->output_off <= TOPA_PMI_MARGIN) { in pt_handle_status()
964 memset(head + buf->output_off, 0, in pt_handle_status()
965 pt_buffer_region_size(buf) - in pt_handle_status()
966 buf->output_off); in pt_handle_status()
977 * pt_read_offset() - translate registers into buffer pointers
987 if (!buf->single) { in pt_read_offset()
988 rdmsrl(MSR_IA32_RTIT_OUTPUT_BASE, pt->output_base); in pt_read_offset()
989 tp = phys_to_virt(pt->output_base); in pt_read_offset()
990 buf->cur = &tp->topa; in pt_read_offset()
993 rdmsrl(MSR_IA32_RTIT_OUTPUT_MASK, pt->output_mask); in pt_read_offset()
995 buf->output_off = pt->output_mask >> 32; in pt_read_offset()
997 if (!buf->single) in pt_read_offset()
998 buf->cur_idx = (pt->output_mask & 0xffffff80) >> 7; in pt_read_offset()
1011 if (WARN_ON_ONCE(pg >= buf->nr_pages)) in pt_topa_entry_for_page()
1018 list_for_each_entry(topa, &buf->tables, list) { in pt_topa_entry_for_page()
1019 if (topa->offset + topa->size > (unsigned long)pg << PAGE_SHIFT) in pt_topa_entry_for_page()
1035 if (WARN_ON_ONCE(topa->last == -1)) in pt_topa_entry_for_page()
1039 cur_pg = PFN_DOWN(topa->offset); in pt_topa_entry_for_page()
1040 if (topa->z_count) { in pt_topa_entry_for_page()
1041 z_pg = TOPA_ENTRY_PAGES(topa, 0) * (topa->z_count + 1); in pt_topa_entry_for_page()
1042 start_idx = topa->z_count + 1; in pt_topa_entry_for_page()
1050 idx = (pg - cur_pg) / TOPA_ENTRY_PAGES(topa, 0); in pt_topa_entry_for_page()
1051 return &tp->table[idx]; in pt_topa_entry_for_page()
1057 for (idx = start_idx, cur_pg += z_pg; idx < topa->last; idx++) { in pt_topa_entry_for_page()
1059 return &tp->table[idx]; in pt_topa_entry_for_page()
1073 pt_topa_prev_entry(struct pt_buffer *buf, struct topa_entry *te) in pt_topa_prev_entry() argument
1075 unsigned long table = (unsigned long)te & ~(PAGE_SIZE - 1); in pt_topa_prev_entry()
1080 if (tp->table != te) in pt_topa_prev_entry()
1081 return --te; in pt_topa_prev_entry()
1083 topa = &tp->topa; in pt_topa_prev_entry()
1084 if (topa == buf->first) in pt_topa_prev_entry()
1085 topa = buf->last; in pt_topa_prev_entry()
1091 return &tp->table[topa->last - 1]; in pt_topa_prev_entry()
1095 * pt_buffer_reset_markers() - place interrupt and stop bits in the buffer
1101 * the buffer has filled up. Only needed and sensible for non-snapshot counters.
1111 unsigned long head = local64_read(&buf->head); in pt_buffer_reset_markers()
1114 if (buf->single) in pt_buffer_reset_markers()
1118 if (buf->output_off + handle->size + 1 < pt_buffer_region_size(buf)) { in pt_buffer_reset_markers()
1120 return -EINVAL; in pt_buffer_reset_markers()
1129 if (buf->stop_te) { in pt_buffer_reset_markers()
1130 buf->stop_te->stop = 0; in pt_buffer_reset_markers()
1131 buf->stop_te->intr = 0; in pt_buffer_reset_markers()
1134 if (buf->intr_te) in pt_buffer_reset_markers()
1135 buf->intr_te->intr = 0; in pt_buffer_reset_markers()
1138 npages = handle->size >> PAGE_SHIFT; in pt_buffer_reset_markers()
1141 if (!offset_in_page(head + handle->size + 1)) in pt_buffer_reset_markers()
1145 idx &= buf->nr_pages - 1; in pt_buffer_reset_markers()
1147 if (idx != buf->stop_pos) { in pt_buffer_reset_markers()
1148 buf->stop_pos = idx; in pt_buffer_reset_markers()
1149 buf->stop_te = pt_topa_entry_for_page(buf, idx); in pt_buffer_reset_markers()
1150 buf->stop_te = pt_topa_prev_entry(buf, buf->stop_te); in pt_buffer_reset_markers()
1153 wakeup = handle->wakeup >> PAGE_SHIFT; in pt_buffer_reset_markers()
1156 idx = (head >> PAGE_SHIFT) + npages - 1; in pt_buffer_reset_markers()
1160 idx &= buf->nr_pages - 1; in pt_buffer_reset_markers()
1161 if (idx != buf->intr_pos) { in pt_buffer_reset_markers()
1162 buf->intr_pos = idx; in pt_buffer_reset_markers()
1163 buf->intr_te = pt_topa_entry_for_page(buf, idx); in pt_buffer_reset_markers()
1164 buf->intr_te = pt_topa_prev_entry(buf, buf->intr_te); in pt_buffer_reset_markers()
1167 buf->stop_te->stop = 1; in pt_buffer_reset_markers()
1168 buf->stop_te->intr = 1; in pt_buffer_reset_markers()
1169 buf->intr_te->intr = 1; in pt_buffer_reset_markers()
1175 * pt_buffer_reset_offsets() - adjust buffer's write pointers from aux_head
1192 struct topa_entry *te; in pt_buffer_reset_offsets() local
1195 if (buf->snapshot) in pt_buffer_reset_offsets()
1196 head &= (buf->nr_pages << PAGE_SHIFT) - 1; in pt_buffer_reset_offsets()
1198 if (!buf->single) { in pt_buffer_reset_offsets()
1199 pg = (head >> PAGE_SHIFT) & (buf->nr_pages - 1); in pt_buffer_reset_offsets()
1200 te = pt_topa_entry_for_page(buf, pg); in pt_buffer_reset_offsets()
1202 cur_tp = topa_entry_to_page(te); in pt_buffer_reset_offsets()
1203 buf->cur = &cur_tp->topa; in pt_buffer_reset_offsets()
1204 buf->cur_idx = te - TOPA_ENTRY(buf->cur, 0); in pt_buffer_reset_offsets()
1205 buf->output_off = head & (pt_buffer_region_size(buf) - 1); in pt_buffer_reset_offsets()
1207 buf->output_off = head; in pt_buffer_reset_offsets()
1210 local64_set(&buf->head, head); in pt_buffer_reset_offsets()
1211 local_set(&buf->data_size, 0); in pt_buffer_reset_offsets()
1215 * pt_buffer_fini_topa() - deallocate ToPA structure of a buffer
1222 if (buf->single) in pt_buffer_fini_topa()
1225 list_for_each_entry_safe(topa, iter, &buf->tables, list) { in pt_buffer_fini_topa()
1235 * pt_buffer_init_topa() - initialize ToPA table for pt buffer
1251 return -ENOMEM; in pt_buffer_init_topa()
1255 while (buf->nr_pages < nr_pages) { in pt_buffer_init_topa()
1259 return -ENOMEM; in pt_buffer_init_topa()
1265 TOPA_ENTRY(buf->last, -1)->base = topa_pfn(buf->first); in pt_buffer_init_topa()
1266 TOPA_ENTRY(buf->last, -1)->end = 1; in pt_buffer_init_topa()
1275 struct page *p = virt_to_page(buf->data_pages[0]); in pt_buffer_try_single()
1276 int ret = -ENOTSUPP, order = 0; in pt_buffer_try_single()
1284 if (!buf->snapshot) in pt_buffer_try_single()
1298 * 4KB - refer errata TGL052, ADL037 and RPL017. Future processors might in pt_buffer_try_single()
1305 buf->single = true; in pt_buffer_try_single()
1306 buf->nr_pages = nr_pages; in pt_buffer_try_single()
1313 * pt_buffer_setup_aux() - set up topa tables for a PT buffer
1329 int node, ret, cpu = event->cpu; in pt_buffer_setup_aux()
1338 if (event->attr.aux_sample_size && !snapshot) in pt_buffer_setup_aux()
1341 if (cpu == -1) in pt_buffer_setup_aux()
1349 buf->snapshot = snapshot; in pt_buffer_setup_aux()
1350 buf->data_pages = pages; in pt_buffer_setup_aux()
1351 buf->stop_pos = -1; in pt_buffer_setup_aux()
1352 buf->intr_pos = -1; in pt_buffer_setup_aux()
1354 INIT_LIST_HEAD(&buf->tables); in pt_buffer_setup_aux()
1370 * pt_buffer_free_aux() - perf AUX deallocation path callback
1384 int node = event->cpu == -1 ? -1 : cpu_to_node(event->cpu); in pt_addr_filters_init()
1391 return -ENOMEM; in pt_addr_filters_init()
1393 if (event->parent) in pt_addr_filters_init()
1394 memcpy(filters, event->parent->hw.addr_filters, in pt_addr_filters_init()
1397 event->hw.addr_filters = filters; in pt_addr_filters_init()
1404 kfree(event->hw.addr_filters); in pt_addr_filters_fini()
1405 event->hw.addr_filters = NULL; in pt_addr_filters_fini()
1409 /* Clamp to a canonical address greater-than-or-equal-to the address given */
1414 -BIT_ULL(vaddr_bits - 1); in clamp_to_ge_canonical_addr()
1417 /* Clamp to a canonical address less-than-or-equal-to the address given */
1422 BIT_ULL(vaddr_bits - 1) - 1; in clamp_to_le_canonical_addr()
1439 if (!filter->size || in pt_event_addr_filters_validate()
1440 filter->action == PERF_ADDR_FILTER_ACTION_START) in pt_event_addr_filters_validate()
1441 return -EOPNOTSUPP; in pt_event_addr_filters_validate()
1444 return -EOPNOTSUPP; in pt_event_addr_filters_validate()
1454 struct perf_addr_filter_range *fr = event->addr_filter_ranges; in pt_event_addr_filters_sync()
1455 struct pt_filters *filters = event->hw.addr_filters; in pt_event_addr_filters_sync()
1462 list_for_each_entry(filter, &head->list, entry) { in pt_event_addr_filters_sync()
1463 if (filter->path.dentry && !fr[range].start) { in pt_event_addr_filters_sync()
1466 unsigned long n = fr[range].size - 1; in pt_event_addr_filters_sync()
1470 if (a > ULONG_MAX - n) in pt_event_addr_filters_sync()
1475 * Apply the offset. 64-bit addresses written to the in pt_event_addr_filters_sync()
1477 * non-canonical addresses. Since software cannot in pt_event_addr_filters_sync()
1478 * execute at non-canonical addresses, adjusting to in pt_event_addr_filters_sync()
1488 filters->filter[range].msr_a = msr_a; in pt_event_addr_filters_sync()
1489 filters->filter[range].msr_b = msr_b; in pt_event_addr_filters_sync()
1490 if (filter->action == PERF_ADDR_FILTER_ACTION_FILTER) in pt_event_addr_filters_sync()
1491 filters->filter[range].config = 1; in pt_event_addr_filters_sync()
1493 filters->filter[range].config = 2; in pt_event_addr_filters_sync()
1497 filters->nr_filters = range; in pt_event_addr_filters_sync()
1501 * intel_pt_interrupt() - PT PMI handler
1507 struct perf_event *event = pt->handle.event; in intel_pt_interrupt()
1512 * do anything (particularly, re-enable) for this event here. in intel_pt_interrupt()
1514 if (!READ_ONCE(pt->handle_nmi)) in intel_pt_interrupt()
1522 buf = perf_get_aux(&pt->handle); in intel_pt_interrupt()
1532 perf_aux_output_end(&pt->handle, local_xchg(&buf->data_size, 0)); in intel_pt_interrupt()
1534 if (!event->hw.state) { in intel_pt_interrupt()
1537 buf = perf_aux_output_begin(&pt->handle, event); in intel_pt_interrupt()
1539 event->hw.state = PERF_HES_STOPPED; in intel_pt_interrupt()
1540 WRITE_ONCE(pt->resume_allowed, 0); in intel_pt_interrupt()
1544 pt_buffer_reset_offsets(buf, pt->handle.head); in intel_pt_interrupt()
1546 ret = pt_buffer_reset_markers(buf, &pt->handle); in intel_pt_interrupt()
1548 perf_aux_output_end(&pt->handle, 0); in intel_pt_interrupt()
1549 WRITE_ONCE(pt->resume_allowed, 0); in intel_pt_interrupt()
1575 WRITE_ONCE(pt->vmx_on, on); in intel_pt_handle_vmx()
1581 event = pt->handle.event; in intel_pt_handle_vmx()
1583 perf_aux_output_flag(&pt->handle, in intel_pt_handle_vmx()
1588 wrmsrl(MSR_IA32_RTIT_CTL, event->hw.aux_config); in intel_pt_handle_vmx()
1600 struct hw_perf_event *hwc = &event->hw; in pt_event_start()
1605 if (READ_ONCE(pt->resume_allowed)) { in pt_event_start()
1618 READ_ONCE(pt->resume_allowed)) in pt_event_start()
1624 buf = perf_aux_output_begin(&pt->handle, event); in pt_event_start()
1628 pt_buffer_reset_offsets(buf, pt->handle.head); in pt_event_start()
1629 if (!buf->snapshot) { in pt_event_start()
1630 if (pt_buffer_reset_markers(buf, &pt->handle)) in pt_event_start()
1634 hwc->state = 0; in pt_event_start()
1642 perf_aux_output_end(&pt->handle, 0); in pt_event_start()
1644 hwc->state = PERF_HES_STOPPED; in pt_event_start()
1652 if (READ_ONCE(pt->pause_allowed)) in pt_event_stop()
1661 WRITE_ONCE(pt->handle_nmi, 0); in pt_event_stop()
1667 * pt_event_snapshot_aux() will not re-allow them. in pt_event_stop()
1669 WRITE_ONCE(pt->pause_allowed, 0); in pt_event_stop()
1670 WRITE_ONCE(pt->resume_allowed, 0); in pt_event_stop()
1675 if (event->hw.state == PERF_HES_STOPPED) in pt_event_stop()
1678 event->hw.state = PERF_HES_STOPPED; in pt_event_stop()
1681 struct pt_buffer *buf = perf_get_aux(&pt->handle); in pt_event_stop()
1686 if (WARN_ON_ONCE(pt->handle.event != event)) in pt_event_stop()
1695 if (buf->snapshot) in pt_event_stop()
1696 pt->handle.head = in pt_event_stop()
1697 local_xchg(&buf->data_size, in pt_event_stop()
1698 buf->nr_pages << PAGE_SHIFT); in pt_event_stop()
1699 perf_aux_output_end(&pt->handle, local_xchg(&buf->data_size, 0)); in pt_event_stop()
1708 struct pt_buffer *buf = perf_get_aux(&pt->handle); in pt_event_snapshot_aux()
1719 if (WARN_ON_ONCE(!buf->snapshot)) in pt_event_snapshot_aux()
1723 WRITE_ONCE(pt->pause_allowed, 0); in pt_event_snapshot_aux()
1724 WRITE_ONCE(pt->resume_allowed, 0); in pt_event_snapshot_aux()
1734 to = local_read(&buf->data_size); in pt_event_snapshot_aux()
1736 from = buf->nr_pages << PAGE_SHIFT; in pt_event_snapshot_aux()
1737 from += to - size; in pt_event_snapshot_aux()
1739 ret = perf_output_copy_aux(&pt->handle, handle, from, to); in pt_event_snapshot_aux()
1745 if (READ_ONCE(pt->handle_nmi)) { in pt_event_snapshot_aux()
1746 WRITE_ONCE(pt->resume_allowed, 1); in pt_event_snapshot_aux()
1750 WRITE_ONCE(pt->pause_allowed, 1); in pt_event_snapshot_aux()
1764 struct hw_perf_event *hwc = &event->hw; in pt_event_add()
1765 int ret = -EBUSY; in pt_event_add()
1767 if (pt->handle.event) in pt_event_add()
1772 ret = -EINVAL; in pt_event_add()
1773 if (hwc->state == PERF_HES_STOPPED) in pt_event_add()
1776 hwc->state = PERF_HES_STOPPED; in pt_event_add()
1797 if (event->attr.type != pt_pmu.pmu.type) in pt_event_init()
1798 return -ENOENT; in pt_event_init()
1801 return -EINVAL; in pt_event_init()
1804 return -EBUSY; in pt_event_init()
1808 return -ENOMEM; in pt_event_init()
1811 event->destroy = pt_event_destroy; in pt_event_init()
1820 if (pt->handle.event) in cpu_emergency_stop_pt()
1821 pt_event_stop(pt->handle.event, PERF_EF_UPDATE); in cpu_emergency_stop_pt()
1826 return event->pmu == &pt_pmu.pmu; in is_intel_pt_event()
1836 return -ENODEV; in pt_init()
1852 return -EBUSY; in pt_init()
1861 return -ENODEV; in pt_init()
1886 ret = perf_pmu_register(&pt_pmu.pmu, "intel_pt", -1); in pt_init()