diff options
Diffstat (limited to 'tools/perf/util/header.h')
| -rw-r--r-- | tools/perf/util/header.h | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h new file mode 100644 index 000000000..2d5e601ba --- /dev/null +++ b/tools/perf/util/header.h @@ -0,0 +1,186 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __PERF_HEADER_H +#define __PERF_HEADER_H + +#include <linux/stddef.h> +#include <linux/perf_event.h> +#include <sys/types.h> +#include <stdio.h> // FILE +#include <stdbool.h> +#include <linux/bitmap.h> +#include <linux/types.h> +#include "env.h" +#include "pmu.h" + +enum { + HEADER_RESERVED = 0, /* always cleared */ + HEADER_FIRST_FEATURE = 1, + HEADER_TRACING_DATA = 1, + HEADER_BUILD_ID, + + HEADER_HOSTNAME, + HEADER_OSRELEASE, + HEADER_VERSION, + HEADER_ARCH, + HEADER_NRCPUS, + HEADER_CPUDESC, + HEADER_CPUID, + HEADER_TOTAL_MEM, + HEADER_CMDLINE, + HEADER_EVENT_DESC, + HEADER_CPU_TOPOLOGY, + HEADER_NUMA_TOPOLOGY, + HEADER_BRANCH_STACK, + HEADER_PMU_MAPPINGS, + HEADER_GROUP_DESC, + HEADER_AUXTRACE, + HEADER_STAT, + HEADER_CACHE, + HEADER_SAMPLE_TIME, + HEADER_MEM_TOPOLOGY, + HEADER_CLOCKID, + HEADER_DIR_FORMAT, + HEADER_BPF_PROG_INFO, + HEADER_BPF_BTF, + HEADER_COMPRESSED, + HEADER_CPU_PMU_CAPS, + HEADER_CLOCK_DATA, + HEADER_HYBRID_TOPOLOGY, + HEADER_PMU_CAPS, + HEADER_LAST_FEATURE, + HEADER_FEAT_BITS = 256, +}; + +enum perf_header_version { + PERF_HEADER_VERSION_1, + PERF_HEADER_VERSION_2, +}; + +struct perf_file_section { + u64 offset; + u64 size; +}; + +struct perf_file_header { + u64 magic; + u64 size; + u64 attr_size; + struct perf_file_section attrs; + struct perf_file_section data; + /* event_types is ignored */ + struct perf_file_section event_types; + DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); +}; + +struct perf_pipe_file_header { + u64 magic; + u64 size; +}; + +struct perf_header; + +int perf_file_header__read(struct perf_file_header *header, + struct perf_header *ph, int fd); + +struct perf_header { + enum perf_header_version version; + bool needs_swap; + u64 data_offset; + u64 data_size; + u64 feat_offset; + DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); + struct perf_env env; +}; + +struct feat_fd { + struct perf_header *ph; + int fd; + void *buf; /* Either buf != NULL or fd >= 0 */ + ssize_t offset; + size_t size; + struct evsel *events; +}; + +struct perf_header_feature_ops { + int (*write)(struct feat_fd *ff, struct evlist *evlist); + void (*print)(struct feat_fd *ff, FILE *fp); + int (*process)(struct feat_fd *ff, void *data); + const char *name; + bool full_only; + bool synthesize; +}; + +struct evlist; +struct perf_session; +struct perf_tool; +union perf_event; + +int perf_session__read_header(struct perf_session *session, int repipe_fd); +int perf_session__write_header(struct perf_session *session, + struct evlist *evlist, + int fd, bool at_exit); +int perf_header__write_pipe(int fd); + +/* feat_writer writes a feature section to output */ +struct feat_writer { + int (*write)(struct feat_writer *fw, void *buf, size_t sz); +}; + +/* feat_copier copies a feature section using feat_writer to output */ +struct feat_copier { + int (*copy)(struct feat_copier *fc, int feat, struct feat_writer *fw); +}; + +int perf_session__inject_header(struct perf_session *session, + struct evlist *evlist, + int fd, + struct feat_copier *fc); + +size_t perf_session__data_offset(const struct evlist *evlist); + +void perf_header__set_feat(struct perf_header *header, int feat); +void perf_header__clear_feat(struct perf_header *header, int feat); +bool perf_header__has_feat(const struct perf_header *header, int feat); + +int perf_header__set_cmdline(int argc, const char **argv); + +int perf_header__process_sections(struct perf_header *header, int fd, + void *data, + int (*process)(struct perf_file_section *section, + struct perf_header *ph, + int feat, int fd, void *data)); + +int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full); + +int perf_event__process_feature(struct perf_session *session, + union perf_event *event); +int perf_event__process_attr(struct perf_tool *tool, union perf_event *event, + struct evlist **pevlist); +int perf_event__process_event_update(struct perf_tool *tool, + union perf_event *event, + struct evlist **pevlist); +size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp); +int perf_event__process_tracing_data(struct perf_session *session, + union perf_event *event); +int perf_event__process_build_id(struct perf_session *session, + union perf_event *event); +bool is_perf_magic(u64 magic); + +#define NAME_ALIGN 64 + +struct feat_fd; + +int do_write(struct feat_fd *fd, const void *buf, size_t size); + +int write_padded(struct feat_fd *fd, const void *bf, + size_t count, size_t count_aligned); + +int is_cpu_online(unsigned int cpu); +/* + * arch specific callback + */ +int get_cpuid(char *buffer, size_t sz); + +char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused); +int strcmp_cpuid_str(const char *s1, const char *s2); +#endif /* __PERF_HEADER_H */ |