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![K Prateek Nayak](/assets/img/avatar_default.png)
build_caches() builds the complete cache topology of the system by iterating over all CPU, building and comparing cache levels of each CPU, keeping only the unique ones at the end. Extract the unit that build the cache levels for a single CPU into a separate function. Expose this function, and the MAX_CACHE_LVL value to be used elsewhere in perf too. Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ananth Narayan <ananth.narayan@amd.com> Cc: Gautham Shenoy <gautham.shenoy@amd.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Stephane Eranian <eranian@google.com> Cc: Wen Pu <puwen@hygon.cn> Link: https://lore.kernel.org/r/20230517172745.5833-2-kprateek.nayak@amd.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
194 lines
4.8 KiB
C
194 lines
4.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_HEADER_H
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#define __PERF_HEADER_H
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#include <linux/stddef.h>
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#include <linux/perf_event.h>
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#include <sys/types.h>
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#include <stdio.h> // FILE
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#include <stdbool.h>
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#include <linux/bitmap.h>
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#include <linux/types.h>
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#include "env.h"
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#include "pmu.h"
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enum {
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HEADER_RESERVED = 0, /* always cleared */
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HEADER_FIRST_FEATURE = 1,
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HEADER_TRACING_DATA = 1,
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HEADER_BUILD_ID,
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HEADER_HOSTNAME,
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HEADER_OSRELEASE,
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HEADER_VERSION,
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HEADER_ARCH,
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HEADER_NRCPUS,
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HEADER_CPUDESC,
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HEADER_CPUID,
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HEADER_TOTAL_MEM,
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HEADER_CMDLINE,
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HEADER_EVENT_DESC,
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HEADER_CPU_TOPOLOGY,
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HEADER_NUMA_TOPOLOGY,
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HEADER_BRANCH_STACK,
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HEADER_PMU_MAPPINGS,
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HEADER_GROUP_DESC,
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HEADER_AUXTRACE,
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HEADER_STAT,
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HEADER_CACHE,
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HEADER_SAMPLE_TIME,
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HEADER_MEM_TOPOLOGY,
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HEADER_CLOCKID,
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HEADER_DIR_FORMAT,
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HEADER_BPF_PROG_INFO,
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HEADER_BPF_BTF,
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HEADER_COMPRESSED,
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HEADER_CPU_PMU_CAPS,
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HEADER_CLOCK_DATA,
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HEADER_HYBRID_TOPOLOGY,
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HEADER_PMU_CAPS,
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HEADER_LAST_FEATURE,
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HEADER_FEAT_BITS = 256,
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};
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enum perf_header_version {
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PERF_HEADER_VERSION_1,
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PERF_HEADER_VERSION_2,
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};
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struct perf_file_section {
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u64 offset;
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u64 size;
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};
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struct perf_file_header {
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u64 magic;
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u64 size;
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u64 attr_size;
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struct perf_file_section attrs;
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struct perf_file_section data;
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/* event_types is ignored */
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struct perf_file_section event_types;
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DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
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};
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struct perf_pipe_file_header {
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u64 magic;
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u64 size;
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};
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struct perf_header;
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int perf_file_header__read(struct perf_file_header *header,
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struct perf_header *ph, int fd);
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struct perf_header {
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enum perf_header_version version;
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bool needs_swap;
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u64 data_offset;
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u64 data_size;
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u64 feat_offset;
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DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
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struct perf_env env;
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};
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struct feat_fd {
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struct perf_header *ph;
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int fd;
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void *buf; /* Either buf != NULL or fd >= 0 */
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ssize_t offset;
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size_t size;
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struct evsel *events;
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};
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struct perf_header_feature_ops {
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int (*write)(struct feat_fd *ff, struct evlist *evlist);
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void (*print)(struct feat_fd *ff, FILE *fp);
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int (*process)(struct feat_fd *ff, void *data);
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const char *name;
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bool full_only;
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bool synthesize;
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};
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struct evlist;
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struct perf_session;
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struct perf_tool;
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union perf_event;
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extern const char perf_version_string[];
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int perf_session__read_header(struct perf_session *session, int repipe_fd);
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int perf_session__write_header(struct perf_session *session,
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struct evlist *evlist,
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int fd, bool at_exit);
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int perf_header__write_pipe(int fd);
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/* feat_writer writes a feature section to output */
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struct feat_writer {
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int (*write)(struct feat_writer *fw, void *buf, size_t sz);
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};
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/* feat_copier copies a feature section using feat_writer to output */
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struct feat_copier {
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int (*copy)(struct feat_copier *fc, int feat, struct feat_writer *fw);
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};
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int perf_session__inject_header(struct perf_session *session,
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struct evlist *evlist,
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int fd,
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struct feat_copier *fc);
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size_t perf_session__data_offset(const struct evlist *evlist);
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void perf_header__set_feat(struct perf_header *header, int feat);
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void perf_header__clear_feat(struct perf_header *header, int feat);
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bool perf_header__has_feat(const struct perf_header *header, int feat);
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int perf_header__set_cmdline(int argc, const char **argv);
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int perf_header__process_sections(struct perf_header *header, int fd,
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void *data,
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int (*process)(struct perf_file_section *section,
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struct perf_header *ph,
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int feat, int fd, void *data));
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int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
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int perf_event__process_feature(struct perf_session *session,
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union perf_event *event);
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int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
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struct evlist **pevlist);
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int perf_event__process_event_update(struct perf_tool *tool,
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union perf_event *event,
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struct evlist **pevlist);
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size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
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#ifdef HAVE_LIBTRACEEVENT
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int perf_event__process_tracing_data(struct perf_session *session,
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union perf_event *event);
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#endif
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int perf_event__process_build_id(struct perf_session *session,
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union perf_event *event);
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bool is_perf_magic(u64 magic);
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#define NAME_ALIGN 64
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struct feat_fd;
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int do_write(struct feat_fd *fd, const void *buf, size_t size);
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int write_padded(struct feat_fd *fd, const void *bf,
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size_t count, size_t count_aligned);
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#define MAX_CACHE_LVL 4
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int is_cpu_online(unsigned int cpu);
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int build_caches_for_cpu(u32 cpu, struct cpu_cache_level caches[], u32 *cntp);
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/*
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* arch specific callback
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*/
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int get_cpuid(char *buffer, size_t sz);
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char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused);
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int strcmp_cpuid_str(const char *s1, const char *s2);
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#endif /* __PERF_HEADER_H */
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