diff options
Diffstat (limited to 'tools/perf/util/intel-pt-decoder')
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/Build | 2 | ||||
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 43 | ||||
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c | 8 | ||||
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-log.c | 5 | ||||
| -rw-r--r-- | tools/perf/util/intel-pt-decoder/intel-pt-log.h | 1 |
5 files changed, 54 insertions, 5 deletions
diff --git a/tools/perf/util/intel-pt-decoder/Build b/tools/perf/util/intel-pt-decoder/Build index 1b704fbea9de..23bf788f84b9 100644 --- a/tools/perf/util/intel-pt-decoder/Build +++ b/tools/perf/util/intel-pt-decoder/Build @@ -1,4 +1,4 @@ -libperf-$(CONFIG_AUXTRACE) += intel-pt-pkt-decoder.o intel-pt-insn-decoder.o intel-pt-log.o intel-pt-decoder.o +perf-$(CONFIG_AUXTRACE) += intel-pt-pkt-decoder.o intel-pt-insn-decoder.o intel-pt-log.o intel-pt-decoder.o inat_tables_script = util/intel-pt-decoder/gen-insn-attr-x86.awk inat_tables_maps = util/intel-pt-decoder/x86-opcode-map.txt diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c index 58f6a9ceb590..6e03db142091 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -26,6 +26,7 @@ #include "../cache.h" #include "../util.h" +#include "../auxtrace.h" #include "intel-pt-insn-decoder.h" #include "intel-pt-pkt-decoder.h" @@ -867,7 +868,7 @@ static int intel_pt_get_next_packet(struct intel_pt_decoder *decoder) ret = intel_pt_get_packet(decoder->buf, decoder->len, &decoder->packet); - if (ret == INTEL_PT_NEED_MORE_BYTES && + if (ret == INTEL_PT_NEED_MORE_BYTES && BITS_PER_LONG == 32 && decoder->len < INTEL_PT_PKT_MAX_SZ && !decoder->next_buf) { ret = intel_pt_get_split_packet(decoder); if (ret < 0) @@ -1394,7 +1395,6 @@ static int intel_pt_overflow(struct intel_pt_decoder *decoder) { intel_pt_log("ERROR: Buffer overflow\n"); intel_pt_clear_tx_flags(decoder); - decoder->cbr = 0; decoder->timestamp_insn_cnt = 0; decoder->pkt_state = INTEL_PT_STATE_ERR_RESYNC; decoder->overflow = true; @@ -1474,6 +1474,8 @@ static void intel_pt_calc_mtc_timestamp(struct intel_pt_decoder *decoder) decoder->have_calc_cyc_to_tsc = false; intel_pt_calc_cyc_to_tsc(decoder, true); } + + intel_pt_log_to("Setting timestamp", decoder->timestamp); } static void intel_pt_calc_cbr(struct intel_pt_decoder *decoder) @@ -1514,6 +1516,8 @@ static void intel_pt_calc_cyc_timestamp(struct intel_pt_decoder *decoder) decoder->timestamp = timestamp; decoder->timestamp_insn_cnt = 0; + + intel_pt_log_to("Setting timestamp", decoder->timestamp); } /* Walk PSB+ packets when already in sync. */ @@ -2571,6 +2575,34 @@ static int intel_pt_tsc_cmp(uint64_t tsc1, uint64_t tsc2) } } +#define MAX_PADDING (PERF_AUXTRACE_RECORD_ALIGNMENT - 1) + +/** + * adj_for_padding - adjust overlap to account for padding. + * @buf_b: second buffer + * @buf_a: first buffer + * @len_a: size of first buffer + * + * @buf_a might have up to 7 bytes of padding appended. Adjust the overlap + * accordingly. + * + * Return: A pointer into @buf_b from where non-overlapped data starts + */ +static unsigned char *adj_for_padding(unsigned char *buf_b, + unsigned char *buf_a, size_t len_a) +{ + unsigned char *p = buf_b - MAX_PADDING; + unsigned char *q = buf_a + len_a - MAX_PADDING; + int i; + + for (i = MAX_PADDING; i; i--, p++, q++) { + if (*p != *q) + break; + } + + return p; +} + /** * intel_pt_find_overlap_tsc - determine start of non-overlapped trace data * using TSC. @@ -2621,8 +2653,11 @@ static unsigned char *intel_pt_find_overlap_tsc(unsigned char *buf_a, /* Same TSC, so buffers are consecutive */ if (!cmp && rem_b >= rem_a) { + unsigned char *start; + *consecutive = true; - return buf_b + len_b - (rem_b - rem_a); + start = buf_b + len_b - (rem_b - rem_a); + return adj_for_padding(start, buf_a, len_a); } if (cmp < 0) return buf_b; /* tsc_a < tsc_b => no overlap */ @@ -2685,7 +2720,7 @@ unsigned char *intel_pt_find_overlap(unsigned char *buf_a, size_t len_a, found = memmem(buf_a, len_a, buf_b, len_a); if (found) { *consecutive = true; - return buf_b + len_a; + return adj_for_padding(buf_b + len_a, buf_a, len_a); } /* Try again at next PSB in buffer 'a' */ diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c index 54818828023b..1c0e289f01e6 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-insn-decoder.c @@ -180,6 +180,14 @@ int intel_pt_get_insn(const unsigned char *buf, size_t len, int x86_64, return 0; } +int arch_is_branch(const unsigned char *buf, size_t len, int x86_64) +{ + struct intel_pt_insn in; + if (intel_pt_get_insn(buf, len, x86_64, &in) < 0) + return -1; + return in.branch != INTEL_PT_BR_NO_BRANCH; +} + const char *dump_insn(struct perf_insn *x, uint64_t ip __maybe_unused, u8 *inbuf, int inlen, int *lenp) { diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-log.c b/tools/perf/util/intel-pt-decoder/intel-pt-log.c index e02bc7b166a0..5e64da270f97 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-log.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-log.c @@ -31,6 +31,11 @@ static FILE *f; static char log_name[MAX_LOG_NAME]; bool intel_pt_enable_logging; +void *intel_pt_log_fp(void) +{ + return f; +} + void intel_pt_log_enable(void) { intel_pt_enable_logging = true; diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-log.h b/tools/perf/util/intel-pt-decoder/intel-pt-log.h index 45b64f93f358..cc084937f701 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-log.h +++ b/tools/perf/util/intel-pt-decoder/intel-pt-log.h @@ -22,6 +22,7 @@ struct intel_pt_pkt; +void *intel_pt_log_fp(void); void intel_pt_log_enable(void); void intel_pt_log_disable(void); void intel_pt_log_set_name(const char *name); |
