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| author | Kees Cook <kees+treewide@kernel.org> | 2026-09-02 15:31:14 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2026-09-04 21:37:00 -0700 |
| commit | 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch) | |
| tree | c65086f9bdcd48c6360fb7cb4598bca084da1f32 /tools/perf/util/header.h | |
| download | linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip | |
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci
This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.
Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.
Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'tools/perf/util/header.h')
| -rw-r--r-- | tools/perf/util/header.h | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h new file mode 100644 index 000000000..5e03f884b --- /dev/null +++ b/tools/perf/util/header.h @@ -0,0 +1,225 @@ +/* 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 <perf/cpumap.h> + +struct evlist; +union perf_event; +struct perf_header; +struct perf_session; +struct perf_tool; + +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_CPU_DOMAIN_INFO, + HEADER_E_MACHINE, + HEADER_CLN_SIZE, + 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: Header representation on disk. + */ +struct perf_file_header { + /** @magic: Holds "PERFILE2". */ + u64 magic; + /** @size: Size of this header - sizeof(struct perf_file_header). */ + u64 size; + /** + * @attr_size: Size of attrs entries - sizeof(struct perf_event_attr) + + * sizeof(struct perf_file_section). + */ + u64 attr_size; + /** @attrs: Offset and size of file section holding attributes. */ + struct perf_file_section attrs; + /** @data: Offset and size of file section holding regular event data. */ + struct perf_file_section data; + /** @event_types: Ignored. */ + struct perf_file_section event_types; + /** + * @adds_features: Bitmap of features. The features are immediately after the data section. + */ + DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); +}; + +struct perf_pipe_file_header { + u64 magic; + u64 size; +}; + +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); + int last_feat; + 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; +}; + +extern const char perf_version_string[]; + +const char *header_feat__name(unsigned int id); + +int perf_session__read_header(struct perf_session *session); +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, + bool write_attrs_after_data); + +size_t perf_session__data_offset(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(const struct perf_tool *tool, + struct perf_session *session, + union perf_event *event); +int perf_event__process_attr(const struct perf_tool *tool, union perf_event *event, + struct evlist **pevlist); +int perf_event__process_event_update(const struct perf_tool *tool, + union perf_event *event, + struct evlist **pevlist); +size_t perf_event__fprintf_attr(union perf_event *event, FILE *fp); +size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp); +#ifdef HAVE_LIBTRACEEVENT +int perf_event__process_tracing_data(const struct perf_tool *tool, + struct perf_session *session, + union perf_event *event); +#endif +int perf_event__process_build_id(const struct perf_tool *tool, + 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); + +#define MAX_CACHE_LVL 4 + +int build_caches_for_cpu(u32 cpu, struct cpu_cache_level caches[], u32 *cntp); + +#define DEFAULT_CACHELINE_SIZE 64 + +/* + * arch specific callback + */ +int get_cpuid(char *buffer, size_t sz, struct perf_cpu cpu); + +char *get_cpuid_str(struct perf_cpu cpu); + +char *get_cpuid_allow_env_override(struct perf_cpu cpu); + +int strcmp_cpuid_str(const char *s1, const char *s2); + +struct cpu_domain_map **build_cpu_domain_map(u32 *schedstat_version, u32 *max_sched_domains, + u32 nr); +#endif /* __PERF_HEADER_H */ |
