diff options
Diffstat (limited to 'tools/perf/util/tool.c')
| -rw-r--r-- | tools/perf/util/tool.c | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/tools/perf/util/tool.c b/tools/perf/util/tool.c new file mode 100644 index 000000000000..3b7f390f26eb --- /dev/null +++ b/tools/perf/util/tool.c @@ -0,0 +1,294 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "data.h" +#include "debug.h" +#include "header.h" +#include "session.h" +#include "stat.h" +#include "tool.h" +#include "tsc.h" +#include <sys/mman.h> +#include <unistd.h> + +#ifdef HAVE_ZSTD_SUPPORT +static int perf_session__process_compressed_event(struct perf_session *session, + union perf_event *event, u64 file_offset, + const char *file_path) +{ + void *src; + size_t decomp_size, src_size; + u64 decomp_last_rem = 0; + size_t mmap_len, decomp_len = session->header.env.comp_mmap_len; + struct decomp *decomp, *decomp_last = session->active_decomp->decomp_last; + + if (decomp_last) { + decomp_last_rem = decomp_last->size - decomp_last->head; + decomp_len += decomp_last_rem; + } + + mmap_len = sizeof(struct decomp) + decomp_len; + decomp = mmap(NULL, mmap_len, PROT_READ|PROT_WRITE, + MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); + if (decomp == MAP_FAILED) { + pr_err("Couldn't allocate memory for decompression\n"); + return -1; + } + + decomp->file_pos = file_offset; + decomp->file_path = file_path; + decomp->mmap_len = mmap_len; + decomp->head = 0; + + if (decomp_last_rem) { + memcpy(decomp->data, &(decomp_last->data[decomp_last->head]), decomp_last_rem); + decomp->size = decomp_last_rem; + } + + src = (void *)event + sizeof(struct perf_record_compressed); + src_size = event->pack.header.size - sizeof(struct perf_record_compressed); + + decomp_size = zstd_decompress_stream(session->active_decomp->zstd_decomp, src, src_size, + &(decomp->data[decomp_last_rem]), decomp_len - decomp_last_rem); + if (!decomp_size) { + munmap(decomp, mmap_len); + pr_err("Couldn't decompress data\n"); + return -1; + } + + decomp->size += decomp_size; + + if (session->active_decomp->decomp == NULL) + session->active_decomp->decomp = decomp; + else + session->active_decomp->decomp_last->next = decomp; + + session->active_decomp->decomp_last = decomp; + + pr_debug("decomp (B): %zd to %zd\n", src_size, decomp_size); + + return 0; +} +#endif + +static int process_event_synth_tracing_data_stub(struct perf_session *session + __maybe_unused, + union perf_event *event + __maybe_unused) +{ + dump_printf(": unhandled!\n"); + return 0; +} + +static int process_event_synth_attr_stub(const struct perf_tool *tool __maybe_unused, + union perf_event *event __maybe_unused, + struct evlist **pevlist + __maybe_unused) +{ + dump_printf(": unhandled!\n"); + return 0; +} + +static int process_event_synth_event_update_stub(const struct perf_tool *tool __maybe_unused, + union perf_event *event __maybe_unused, + struct evlist **pevlist + __maybe_unused) +{ + if (dump_trace) + perf_event__fprintf_event_update(event, stdout); + + dump_printf(": unhandled!\n"); + return 0; +} + +int process_event_sample_stub(const struct perf_tool *tool __maybe_unused, + union perf_event *event __maybe_unused, + struct perf_sample *sample __maybe_unused, + struct evsel *evsel __maybe_unused, + struct machine *machine __maybe_unused) +{ + dump_printf(": unhandled!\n"); + return 0; +} + +static int process_event_stub(const struct perf_tool *tool __maybe_unused, + union perf_event *event __maybe_unused, + struct perf_sample *sample __maybe_unused, + struct machine *machine __maybe_unused) +{ + dump_printf(": unhandled!\n"); + return 0; +} + +static int process_finished_round_stub(const struct perf_tool *tool __maybe_unused, + union perf_event *event __maybe_unused, + struct ordered_events *oe __maybe_unused) +{ + dump_printf(": unhandled!\n"); + return 0; +} + +static int skipn(int fd, off_t n) +{ + char buf[4096]; + ssize_t ret; + + while (n > 0) { + ret = read(fd, buf, min(n, (off_t)sizeof(buf))); + if (ret <= 0) + return ret; + n -= ret; + } + + return 0; +} + +static s64 process_event_auxtrace_stub(struct perf_session *session __maybe_unused, + union perf_event *event) +{ + dump_printf(": unhandled!\n"); + if (perf_data__is_pipe(session->data)) + skipn(perf_data__fd(session->data), event->auxtrace.size); + return event->auxtrace.size; +} + +static int process_event_op2_stub(struct perf_session *session __maybe_unused, + union perf_event *event __maybe_unused) +{ + dump_printf(": unhandled!\n"); + return 0; +} + + +static +int process_event_thread_map_stub(struct perf_session *session __maybe_unused, + union perf_event *event __maybe_unused) +{ + if (dump_trace) + perf_event__fprintf_thread_map(event, stdout); + + dump_printf(": unhandled!\n"); + return 0; +} + +static +int process_event_cpu_map_stub(struct perf_session *session __maybe_unused, + union perf_event *event __maybe_unused) +{ + if (dump_trace) + perf_event__fprintf_cpu_map(event, stdout); + + dump_printf(": unhandled!\n"); + return 0; +} + +static +int process_event_stat_config_stub(struct perf_session *session __maybe_unused, + union perf_event *event __maybe_unused) +{ + if (dump_trace) + perf_event__fprintf_stat_config(event, stdout); + + dump_printf(": unhandled!\n"); + return 0; +} + +static int process_stat_stub(struct perf_session *perf_session __maybe_unused, + union perf_event *event) +{ + if (dump_trace) + perf_event__fprintf_stat(event, stdout); + + dump_printf(": unhandled!\n"); + return 0; +} + +static int process_stat_round_stub(struct perf_session *perf_session __maybe_unused, + union perf_event *event) +{ + if (dump_trace) + perf_event__fprintf_stat_round(event, stdout); + + dump_printf(": unhandled!\n"); + return 0; +} + +static int process_event_time_conv_stub(struct perf_session *perf_session __maybe_unused, + union perf_event *event) +{ + if (dump_trace) + perf_event__fprintf_time_conv(event, stdout); + + dump_printf(": unhandled!\n"); + return 0; +} + +static int perf_session__process_compressed_event_stub(struct perf_session *session __maybe_unused, + union perf_event *event __maybe_unused, + u64 file_offset __maybe_unused, + const char *file_path __maybe_unused) +{ + dump_printf(": unhandled!\n"); + return 0; +} + +void perf_tool__init(struct perf_tool *tool, bool ordered_events) +{ + tool->ordered_events = ordered_events; + tool->ordering_requires_timestamps = false; + tool->namespace_events = false; + tool->cgroup_events = false; + tool->no_warn = false; + tool->show_feat_hdr = SHOW_FEAT_NO_HEADER; + + tool->sample = process_event_sample_stub; + tool->mmap = process_event_stub; + tool->mmap2 = process_event_stub; + tool->comm = process_event_stub; + tool->namespaces = process_event_stub; + tool->cgroup = process_event_stub; + tool->fork = process_event_stub; + tool->exit = process_event_stub; + tool->lost = perf_event__process_lost; + tool->lost_samples = perf_event__process_lost_samples; + tool->aux = perf_event__process_aux; + tool->itrace_start = perf_event__process_itrace_start; + tool->context_switch = perf_event__process_switch; + tool->ksymbol = perf_event__process_ksymbol; + tool->bpf = perf_event__process_bpf; + tool->text_poke = perf_event__process_text_poke; + tool->aux_output_hw_id = perf_event__process_aux_output_hw_id; + tool->read = process_event_sample_stub; + tool->throttle = process_event_stub; + tool->unthrottle = process_event_stub; + tool->attr = process_event_synth_attr_stub; + tool->event_update = process_event_synth_event_update_stub; + tool->tracing_data = process_event_synth_tracing_data_stub; + tool->build_id = process_event_op2_stub; + + if (ordered_events) + tool->finished_round = perf_event__process_finished_round; + else + tool->finished_round = process_finished_round_stub; + + tool->id_index = process_event_op2_stub; + tool->auxtrace_info = process_event_op2_stub; + tool->auxtrace = process_event_auxtrace_stub; + tool->auxtrace_error = process_event_op2_stub; + tool->thread_map = process_event_thread_map_stub; + tool->cpu_map = process_event_cpu_map_stub; + tool->stat_config = process_event_stat_config_stub; + tool->stat = process_stat_stub; + tool->stat_round = process_stat_round_stub; + tool->time_conv = process_event_time_conv_stub; + tool->feature = process_event_op2_stub; +#ifdef HAVE_ZSTD_SUPPORT + tool->compressed = perf_session__process_compressed_event; +#else + tool->compressed = perf_session__process_compressed_event_stub; +#endif + tool->finished_init = process_event_op2_stub; +} + +bool perf_tool__compressed_is_stub(const struct perf_tool *tool) +{ + return tool->compressed == perf_session__process_compressed_event_stub; +} |