From: Qi Liu liuqi115@huawei.com
mainline inclusion from mainline-v6.1-rc1 commit 5e91e57e6809 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I5WGEF CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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Add support for using 'perf report --dump-raw-trace' to parse PTT packet.
Example usage:
Output will contain raw PTT data and its textual representation, such as (8DW format):
0 0 0x5810 [0x30]: PERF_RECORD_AUXTRACE size: 0x400000 offset: 0 ref: 0xa5d50c725 idx: 0 tid: -1 cpu: 0 . . ... HISI PTT data: size 4194304 bytes . 00000000: 00 00 00 00 Prefix . 00000004: 08 20 00 60 Header DW0 . 00000008: ff 02 00 01 Header DW1 . 0000000c: 20 08 00 00 Header DW2 . 00000010: 10 e7 44 ab Header DW3 . 00000014: 2a a8 1e 01 Time . 00000020: 00 00 00 00 Prefix . 00000024: 01 00 00 60 Header DW0 . 00000028: 0f 1e 00 01 Header DW1 . 0000002c: 04 00 00 00 Header DW2 . 00000030: 40 00 81 02 Header DW3 . 00000034: ee 02 00 00 Time ....
This patch only add basic parsing support according to the definition of the PTT packet described in Documentation/trace/hisi-ptt.rst. And the fields of each packet can be further decoded following the PCIe Spec's definition of TLP packet.
Signed-off-by: Qi Liu liuqi115@huawei.com Signed-off-by: Yicong Yang yangyicong@hisilicon.com Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Bjorn Helgaas helgaas@kernel.org Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: Ingo Molnar mingo@redhat.com Cc: James Clark james.clark@arm.com Cc: John Garry john.garry@huawei.com Cc: Jonathan Cameron jonathan.cameron@huawei.com Cc: Leo Yan leo.yan@linaro.org Cc: Lorenzo Pieralisi lorenzo.pieralisi@arm.com Cc: Mark Rutland mark.rutland@arm.com Cc: Mathieu Poirier mathieu.poirier@linaro.org Cc: Mike Leach mike.leach@linaro.org Cc: Peter Zijlstra peterz@infradead.org Cc: Qi Liu liuqi6124@gmail.com Cc: Shameerali Kolothum Thodi shameerali.kolothum.thodi@huawei.com Cc: Shaokun Zhang zhangshaokun@hisilicon.com Cc: Suzuki Poulouse suzuki.poulose@arm.com Cc: Will Deacon will@kernel.org Cc: Zeng Prime prime.zeng@huawei.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-pci@vger.kernel.org Cc: linuxarm@huawei.com Link: https://lore.kernel.org/r/20220927081400.14364-4-yangyicong@huawei.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Wangming Shao shaowangming@h-partners.com Reviewed-by: Yang Jihong yangjihong1@huawei.com Reviewed-by: Jay Fang f.fangjian@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- tools/perf/util/Build | 2 + tools/perf/util/auxtrace.c | 3 + tools/perf/util/hisi-ptt-decoder/Build | 1 + .../hisi-ptt-decoder/hisi-ptt-pkt-decoder.c | 164 +++++++++++++++ .../hisi-ptt-decoder/hisi-ptt-pkt-decoder.h | 31 +++ tools/perf/util/hisi-ptt.c | 192 ++++++++++++++++++ tools/perf/util/hisi-ptt.h | 3 + 7 files changed, 396 insertions(+) create mode 100644 tools/perf/util/hisi-ptt-decoder/Build create mode 100644 tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.c create mode 100644 tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.h create mode 100644 tools/perf/util/hisi-ptt.c
diff --git a/tools/perf/util/Build b/tools/perf/util/Build index 661d995f5016..6bf0547bf134 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -109,6 +109,8 @@ perf-$(CONFIG_AUXTRACE) += intel-pt.o perf-$(CONFIG_AUXTRACE) += intel-bts.o perf-$(CONFIG_AUXTRACE) += arm-spe.o perf-$(CONFIG_AUXTRACE) += arm-spe-decoder/ +perf-$(CONFIG_AUXTRACE) += hisi-ptt.o +perf-$(CONFIG_AUXTRACE) += hisi-ptt-decoder/ perf-$(CONFIG_AUXTRACE) += s390-cpumsf.o
ifdef CONFIG_LIBOPENCSD diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index 26365a3d197d..ead536d02160 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -51,6 +51,7 @@ #include "intel-pt.h" #include "intel-bts.h" #include "arm-spe.h" +#include "hisi-ptt.h" #include "s390-cpumsf.h" #include "util/mmap.h"
@@ -1274,6 +1275,8 @@ int perf_event__process_auxtrace_info(struct perf_session *session, err = s390_cpumsf_process_auxtrace_info(event, session); break; case PERF_AUXTRACE_HISI_PTT: + err = hisi_ptt_process_auxtrace_info(event, session); + break; case PERF_AUXTRACE_UNKNOWN: default: return -EINVAL; diff --git a/tools/perf/util/hisi-ptt-decoder/Build b/tools/perf/util/hisi-ptt-decoder/Build new file mode 100644 index 000000000000..db3db8b75033 --- /dev/null +++ b/tools/perf/util/hisi-ptt-decoder/Build @@ -0,0 +1 @@ +perf-$(CONFIG_AUXTRACE) += hisi-ptt-pkt-decoder.o diff --git a/tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.c b/tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.c new file mode 100644 index 000000000000..a17c423a526d --- /dev/null +++ b/tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.c @@ -0,0 +1,164 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * HiSilicon PCIe Trace and Tuning (PTT) support + * Copyright (c) 2022 HiSilicon Technologies Co., Ltd. + */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <endian.h> +#include <byteswap.h> +#include <linux/bitops.h> +#include <stdarg.h> + +#include "../color.h" +#include "hisi-ptt-pkt-decoder.h" + +/* + * For 8DW format, the bit[31:11] of DW0 is always 0x1fffff, which can be + * used to distinguish the data format. + * 8DW format is like: + * bits [ 31:11 ][ 10:0 ] + * |---------------------------------------|-------------------| + * DW0 [ 0x1fffff ][ Reserved (0x7ff) ] + * DW1 [ Prefix ] + * DW2 [ Header DW0 ] + * DW3 [ Header DW1 ] + * DW4 [ Header DW2 ] + * DW5 [ Header DW3 ] + * DW6 [ Reserved (0x0) ] + * DW7 [ Time ] + * + * 4DW format is like: + * bits [31:30] [ 29:25 ][24][23][22][21][ 20:11 ][ 10:0 ] + * |-----|---------|---|---|---|---|-------------|-------------| + * DW0 [ Fmt ][ Type ][T9][T8][TH][SO][ Length ][ Time ] + * DW1 [ Header DW1 ] + * DW2 [ Header DW2 ] + * DW3 [ Header DW3 ] + */ + +enum hisi_ptt_8dw_pkt_field_type { + HISI_PTT_8DW_CHK_AND_RSV0, + HISI_PTT_8DW_PREFIX, + HISI_PTT_8DW_HEAD0, + HISI_PTT_8DW_HEAD1, + HISI_PTT_8DW_HEAD2, + HISI_PTT_8DW_HEAD3, + HISI_PTT_8DW_RSV1, + HISI_PTT_8DW_TIME, + HISI_PTT_8DW_TYPE_MAX +}; + +enum hisi_ptt_4dw_pkt_field_type { + HISI_PTT_4DW_HEAD1, + HISI_PTT_4DW_HEAD2, + HISI_PTT_4DW_HEAD3, + HISI_PTT_4DW_TYPE_MAX +}; + +static const char * const hisi_ptt_8dw_pkt_field_name[] = { + [HISI_PTT_8DW_PREFIX] = "Prefix", + [HISI_PTT_8DW_HEAD0] = "Header DW0", + [HISI_PTT_8DW_HEAD1] = "Header DW1", + [HISI_PTT_8DW_HEAD2] = "Header DW2", + [HISI_PTT_8DW_HEAD3] = "Header DW3", + [HISI_PTT_8DW_TIME] = "Time" +}; + +static const char * const hisi_ptt_4dw_pkt_field_name[] = { + [HISI_PTT_4DW_HEAD1] = "Header DW1", + [HISI_PTT_4DW_HEAD2] = "Header DW2", + [HISI_PTT_4DW_HEAD3] = "Header DW3", +}; + +union hisi_ptt_4dw { + struct { + uint32_t format : 2; + uint32_t type : 5; + uint32_t t9 : 1; + uint32_t t8 : 1; + uint32_t th : 1; + uint32_t so : 1; + uint32_t len : 10; + uint32_t time : 11; + }; + uint32_t value; +}; + +static void hisi_ptt_print_pkt(const unsigned char *buf, int pos, const char *desc) +{ + const char *color = PERF_COLOR_BLUE; + int i; + + printf("."); + color_fprintf(stdout, color, " %08x: ", pos); + for (i = 0; i < HISI_PTT_FIELD_LENTH; i++) + color_fprintf(stdout, color, "%02x ", buf[pos + i]); + for (i = 0; i < HISI_PTT_MAX_SPACE_LEN; i++) + color_fprintf(stdout, color, " "); + color_fprintf(stdout, color, " %s\n", desc); +} + +static int hisi_ptt_8dw_kpt_desc(const unsigned char *buf, int pos) +{ + int i; + + for (i = 0; i < HISI_PTT_8DW_TYPE_MAX; i++) { + /* Do not show 8DW check field and reserved fields */ + if (i == HISI_PTT_8DW_CHK_AND_RSV0 || i == HISI_PTT_8DW_RSV1) { + pos += HISI_PTT_FIELD_LENTH; + continue; + } + + hisi_ptt_print_pkt(buf, pos, hisi_ptt_8dw_pkt_field_name[i]); + pos += HISI_PTT_FIELD_LENTH; + } + + return hisi_ptt_pkt_size[HISI_PTT_8DW_PKT]; +} + +static void hisi_ptt_4dw_print_dw0(const unsigned char *buf, int pos) +{ + const char *color = PERF_COLOR_BLUE; + union hisi_ptt_4dw dw0; + int i; + + dw0.value = *(uint32_t *)(buf + pos); + printf("."); + color_fprintf(stdout, color, " %08x: ", pos); + for (i = 0; i < HISI_PTT_FIELD_LENTH; i++) + color_fprintf(stdout, color, "%02x ", buf[pos + i]); + for (i = 0; i < HISI_PTT_MAX_SPACE_LEN; i++) + color_fprintf(stdout, color, " "); + + color_fprintf(stdout, color, + " %s %x %s %x %s %x %s %x %s %x %s %x %s %x %s %x\n", + "Format", dw0.format, "Type", dw0.type, "T9", dw0.t9, + "T8", dw0.t8, "TH", dw0.th, "SO", dw0.so, "Length", + dw0.len, "Time", dw0.time); +} + +static int hisi_ptt_4dw_kpt_desc(const unsigned char *buf, int pos) +{ + int i; + + hisi_ptt_4dw_print_dw0(buf, pos); + pos += HISI_PTT_FIELD_LENTH; + + for (i = 0; i < HISI_PTT_4DW_TYPE_MAX; i++) { + hisi_ptt_print_pkt(buf, pos, hisi_ptt_4dw_pkt_field_name[i]); + pos += HISI_PTT_FIELD_LENTH; + } + + return hisi_ptt_pkt_size[HISI_PTT_4DW_PKT]; +} + +int hisi_ptt_pkt_desc(const unsigned char *buf, int pos, enum hisi_ptt_pkt_type type) +{ + if (type == HISI_PTT_8DW_PKT) + return hisi_ptt_8dw_kpt_desc(buf, pos); + + return hisi_ptt_4dw_kpt_desc(buf, pos); +} diff --git a/tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.h b/tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.h new file mode 100644 index 000000000000..e78f1b5bc836 --- /dev/null +++ b/tools/perf/util/hisi-ptt-decoder/hisi-ptt-pkt-decoder.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * HiSilicon PCIe Trace and Tuning (PTT) support + * Copyright (c) 2022 HiSilicon Technologies Co., Ltd. + */ + +#ifndef INCLUDE__HISI_PTT_PKT_DECODER_H__ +#define INCLUDE__HISI_PTT_PKT_DECODER_H__ + +#include <stddef.h> +#include <stdint.h> + +#define HISI_PTT_8DW_CHECK_MASK GENMASK(31, 11) +#define HISI_PTT_IS_8DW_PKT GENMASK(31, 11) +#define HISI_PTT_MAX_SPACE_LEN 10 +#define HISI_PTT_FIELD_LENTH 4 + +enum hisi_ptt_pkt_type { + HISI_PTT_4DW_PKT, + HISI_PTT_8DW_PKT, + HISI_PTT_PKT_MAX +}; + +static int hisi_ptt_pkt_size[] = { + [HISI_PTT_4DW_PKT] = 16, + [HISI_PTT_8DW_PKT] = 32, +}; + +int hisi_ptt_pkt_desc(const unsigned char *buf, int pos, enum hisi_ptt_pkt_type type); + +#endif diff --git a/tools/perf/util/hisi-ptt.c b/tools/perf/util/hisi-ptt.c new file mode 100644 index 000000000000..45b614bb73bf --- /dev/null +++ b/tools/perf/util/hisi-ptt.c @@ -0,0 +1,192 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * HiSilicon PCIe Trace and Tuning (PTT) support + * Copyright (c) 2022 HiSilicon Technologies Co., Ltd. + */ + +#include <byteswap.h> +#include <endian.h> +#include <errno.h> +#include <inttypes.h> +#include <linux/bitops.h> +#include <linux/kernel.h> +#include <linux/log2.h> +#include <linux/types.h> +#include <linux/zalloc.h> +#include <stdlib.h> +#include <unistd.h> + +#include "auxtrace.h" +#include "color.h" +#include "debug.h" +#include "evsel.h" +#include "hisi-ptt.h" +#include "hisi-ptt-decoder/hisi-ptt-pkt-decoder.h" +#include "machine.h" +#include "session.h" +#include "tool.h" +#include <internal/lib.h> + +struct hisi_ptt { + struct auxtrace auxtrace; + u32 auxtrace_type; + struct perf_session *session; + struct machine *machine; + u32 pmu_type; +}; + +struct hisi_ptt_queue { + struct hisi_ptt *ptt; + struct auxtrace_buffer *buffer; +}; + +static enum hisi_ptt_pkt_type hisi_ptt_check_packet_type(unsigned char *buf) +{ + uint32_t head = *(uint32_t *)buf; + + if ((HISI_PTT_8DW_CHECK_MASK & head) == HISI_PTT_IS_8DW_PKT) + return HISI_PTT_8DW_PKT; + + return HISI_PTT_4DW_PKT; +} + +static void hisi_ptt_dump(struct hisi_ptt *ptt __maybe_unused, + unsigned char *buf, size_t len) +{ + const char *color = PERF_COLOR_BLUE; + enum hisi_ptt_pkt_type type; + size_t pos = 0; + int pkt_len; + + type = hisi_ptt_check_packet_type(buf); + len = round_down(len, hisi_ptt_pkt_size[type]); + color_fprintf(stdout, color, ". ... HISI PTT data: size %zu bytes\n", + len); + + while (len > 0) { + pkt_len = hisi_ptt_pkt_desc(buf, pos, type); + if (!pkt_len) + color_fprintf(stdout, color, " Bad packet!\n"); + + pos += pkt_len; + len -= pkt_len; + } +} + +static void hisi_ptt_dump_event(struct hisi_ptt *ptt, unsigned char *buf, + size_t len) +{ + printf(".\n"); + + hisi_ptt_dump(ptt, buf, len); +} + +static int hisi_ptt_process_event(struct perf_session *session __maybe_unused, + union perf_event *event __maybe_unused, + struct perf_sample *sample __maybe_unused, + struct perf_tool *tool __maybe_unused) +{ + return 0; +} + +static int hisi_ptt_process_auxtrace_event(struct perf_session *session, + union perf_event *event, + struct perf_tool *tool __maybe_unused) +{ + struct hisi_ptt *ptt = container_of(session->auxtrace, struct hisi_ptt, + auxtrace); + int fd = perf_data__fd(session->data); + int size = event->auxtrace.size; + void *data = malloc(size); + off_t data_offset; + int err; + + if (!data) + return -errno; + + if (perf_data__is_pipe(session->data)) { + data_offset = 0; + } else { + data_offset = lseek(fd, 0, SEEK_CUR); + if (data_offset == -1) + return -errno; + } + + err = readn(fd, data, size); + if (err != (ssize_t)size) { + free(data); + return -errno; + } + + if (dump_trace) + hisi_ptt_dump_event(ptt, data, size); + + return 0; +} + +static int hisi_ptt_flush(struct perf_session *session __maybe_unused, + struct perf_tool *tool __maybe_unused) +{ + return 0; +} + +static void hisi_ptt_free_events(struct perf_session *session __maybe_unused) +{ +} + +static void hisi_ptt_free(struct perf_session *session) +{ + struct hisi_ptt *ptt = container_of(session->auxtrace, struct hisi_ptt, + auxtrace); + + session->auxtrace = NULL; + free(ptt); +} + +static bool hisi_ptt_evsel_is_auxtrace(struct perf_session *session, + struct evsel *evsel) +{ + struct hisi_ptt *ptt = container_of(session->auxtrace, struct hisi_ptt, auxtrace); + + return evsel->core.attr.type == ptt->pmu_type; +} + +static void hisi_ptt_print_info(__u64 type) +{ + if (!dump_trace) + return; + + fprintf(stdout, " PMU Type %" PRId64 "\n", (s64) type); +} + +int hisi_ptt_process_auxtrace_info(union perf_event *event, + struct perf_session *session) +{ + struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info; + struct hisi_ptt *ptt; + + if (auxtrace_info->header.size < HISI_PTT_AUXTRACE_PRIV_SIZE + + sizeof(struct perf_record_auxtrace_info)) + return -EINVAL; + + ptt = zalloc(sizeof(*ptt)); + if (!ptt) + return -ENOMEM; + + ptt->session = session; + ptt->machine = &session->machines.host; /* No kvm support */ + ptt->auxtrace_type = auxtrace_info->type; + ptt->pmu_type = auxtrace_info->priv[0]; + + ptt->auxtrace.process_event = hisi_ptt_process_event; + ptt->auxtrace.process_auxtrace_event = hisi_ptt_process_auxtrace_event; + ptt->auxtrace.flush_events = hisi_ptt_flush; + ptt->auxtrace.free_events = hisi_ptt_free_events; + ptt->auxtrace.free = hisi_ptt_free; + ptt->auxtrace.evsel_is_auxtrace = hisi_ptt_evsel_is_auxtrace; + session->auxtrace = &ptt->auxtrace; + + hisi_ptt_print_info(auxtrace_info->priv[0]); + + return 0; +} diff --git a/tools/perf/util/hisi-ptt.h b/tools/perf/util/hisi-ptt.h index 82283c81b4c1..2db9b4056214 100644 --- a/tools/perf/util/hisi-ptt.h +++ b/tools/perf/util/hisi-ptt.h @@ -13,4 +13,7 @@ struct auxtrace_record *hisi_ptt_recording_init(int *err, struct perf_pmu *hisi_ptt_pmu);
+int hisi_ptt_process_auxtrace_info(union perf_event *event, + struct perf_session *session); + #endif