diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
| commit | f4cdf7ca9a1fdcca413157df19753f388a5a224e (patch) | |
| tree | 60a31895b2446cd7fa27514e8c2843534a0de0da /tools/perf/util/session.h | |
| download | linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip | |
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab:
- v4l2-core: added ISP statistics support and per-block validation
- v4l2-core: Allow unknown HDR10 white point and luminance
- New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor
- New codec: Milos: VPU v2.0 codec support
- isp driver: gained support for Dreamchip RPPX1 ISP framework
- vsp1 driver: gained support for RZ/T2H and RZ/N2H
- Novalake driver: gained CVS support for new NVL hardware
- dvb-core: fix feed leak on failed DMX_ADD_PID
- several driver fixes, cleanups and minor improvements
* tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits)
media: ipu-bridge: check all DMI entries when overriding sensor rotation
media: v4l2-async: avoid deleting unlinked ASC entry on link error
media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement
media: intel/ipu6: fix async notifier cleanup leak on parse error
media: staging/ipu7: fix async notifier UAF on probe error path
media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
media: rcar-isp: Fix VSPX reference leaks
media: rcar-isp: Release ISPCORE resources
media: i2c: imx415: Release runtime PM reference on VBLANK error
media: i2c: imx415: Return test pattern write errors
media: renesas: vsp1: Declare index variables in for loop statement
media: renesas: vsp1: Make reset control optional to support platforms without a reset line
media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs
media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs
media: nxp: imx8-isi: Add additional 32-bit RGB format support
media: nxp: imx8-isi: Add 16-bit raw Bayer format support
media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams
media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks
media: nxp: imx8-isi: Correct color map between V4L2 and ISI
...
Diffstat (limited to 'tools/perf/util/session.h')
| -rw-r--r-- | tools/perf/util/session.h | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h new file mode 100644 index 000000000..d554e2a1a --- /dev/null +++ b/tools/perf/util/session.h @@ -0,0 +1,218 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __PERF_SESSION_H +#define __PERF_SESSION_H + +#include "trace-event.h" +#include "event.h" +#include "header.h" +#include "machine.h" +#include "data.h" +#include "ordered-events.h" +#include "util/compress.h" +#include <linux/kernel.h> +#include <linux/rbtree.h> +#include <linux/perf_event.h> + +struct ip_callchain; +struct symbol; +struct thread; + +struct auxtrace; +struct itrace_synth_opts; + +struct decomp_data { + struct decomp *decomp; + struct decomp *decomp_last; + struct zstd_data *zstd_decomp; +}; + +/** + * struct perf_session- A Perf session holds the main state when the program is + * working with live perf events or reading data from an input file. + * + * The rough organization of a perf_session is: + * ``` + * +--------------+ +-----------+ +------------+ + * | Session |1..* ----->| Machine |1..* ----->| Thread | + * +--------------+ +-----------+ +------------+ + * ``` + */ +struct perf_session { + /** + * @header: The read version of a perf_file_header, or captures global + * information from a live session. + */ + struct perf_header header; + /** @machines: Machines within the session a host and 0 or more guests. */ + struct machines machines; + /** @evlist: List of evsels/events of the session. */ + struct evlist *evlist; + /** @auxtrace: callbacks to allow AUX area data decoding. */ + const struct auxtrace *auxtrace; + /** @itrace_synth_opts: AUX area tracing synthesis options. */ + struct itrace_synth_opts *itrace_synth_opts; + /** @auxtrace_index: index of AUX area tracing events within a perf.data file. */ + struct list_head auxtrace_index; +#ifdef HAVE_LIBTRACEEVENT + /** @tevent: handles for libtraceevent and plugins. */ + struct trace_event tevent; +#endif + /** @time_conv: Holds contents of last PERF_RECORD_TIME_CONV event. */ + struct perf_record_time_conv time_conv; + /** @trace_event_repipe: When set causes read trace events to be written to stdout. */ + bool trace_event_repipe; + /** + * @one_mmap: The reader will use a single mmap by default. There may be + * multiple data files in particular for aux events. If this is true + * then the single big mmap for the data file can be assumed. + */ + bool one_mmap; + /** @one_mmap_addr: Address of initial perf data file reader mmap. */ + void *one_mmap_addr; + /** @one_mmap_offset: File offset in perf.data file when mapped. */ + u64 one_mmap_offset; + /** @one_mmap_size: Size of the single mmap in bytes. */ + u64 one_mmap_size; + /** @ordered_events: Used to turn unordered events into ordered ones. */ + struct ordered_events ordered_events; + /** @data: Optional perf data file being read from. */ + struct perf_data *data; + /** @tool: callbacks for event handling. */ + const struct perf_tool *tool; + /** + * @bytes_transferred: Used by perf record to count written bytes before + * compression. + */ + u64 bytes_transferred; + /** + * @bytes_compressed: Used by perf record to count written bytes after + * compression. + */ + u64 bytes_compressed; + /** @zstd_data: Owner of global compression state, buffers, etc. */ + struct zstd_data zstd_data; + struct decomp_data decomp_data; + struct decomp_data *active_decomp; +}; + +struct decomp { + struct decomp *next; + u64 file_pos; + const char *file_path; + size_t mmap_len; + u64 head; + size_t size; + char data[]; +}; + +struct perf_tool; + +struct perf_session *__perf_session__new(struct perf_data *data, + struct perf_tool *tool, + bool trace_event_repipe, + struct perf_env *host_env); + +static inline struct perf_session *perf_session__new(struct perf_data *data, + struct perf_tool *tool) +{ + return __perf_session__new(data, tool, /*trace_event_repipe=*/false, /*host_env=*/NULL); +} + +void perf_session__delete(struct perf_session *session); + +void perf_event_header__bswap(struct perf_event_header *hdr); + +int perf_session__peek_event(struct perf_session *session, off_t file_offset, + void *buf, size_t buf_sz, + union perf_event **event_ptr, + struct perf_sample *sample); +typedef int (*peek_events_cb_t)(struct perf_session *session, + union perf_event *event, u64 offset, + void *data); +int perf_session__peek_events(struct perf_session *session, u64 offset, + u64 size, peek_events_cb_t cb, void *data); + +int perf_session__process_events(struct perf_session *session); + +int perf_session__queue_event(struct perf_session *s, union perf_event *event, + u64 timestamp, u64 file_offset, const char *file_path); + +int perf_session__resolve_callchain(struct perf_session *session, + struct evsel *evsel, + struct thread *thread, + struct ip_callchain *chain, + struct symbol **parent); + +bool perf_session__has_traces(struct perf_session *session, const char *msg); +bool perf_session__has_switch_events(struct perf_session *session); + +void perf_event__attr_swap(struct perf_event_attr *attr); + +int perf_session__create_kernel_maps(struct perf_session *session); + +void perf_session__set_id_hdr_size(struct perf_session *session); + +static inline +struct machine *perf_session__find_machine(struct perf_session *session, pid_t pid) +{ + return machines__find(&session->machines, pid); +} + +static inline +struct machine *perf_session__findnew_machine(struct perf_session *session, pid_t pid) +{ + return machines__findnew(&session->machines, pid); +} + +struct thread *perf_session__findnew(struct perf_session *session, pid_t pid); +int perf_session__register_idle_thread(struct perf_session *session); + +size_t perf_session__fprintf(struct perf_session *session, FILE *fp); + +size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp); + +size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp, + bool (fn)(struct dso *dso, int parm), int parm); + +size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp); + +void perf_session__dump_kmaps(struct perf_session *session); + +struct evsel *perf_session__find_first_evtype(struct perf_session *session, + unsigned int type); + +int perf_session__cpu_bitmap(struct perf_session *session, + const char *cpu_list, unsigned long *cpu_bitmap); + +void perf_session__fprintf_info(struct perf_session *s, FILE *fp, bool full); + +struct evsel_str_handler; + +#define perf_session__set_tracepoints_handlers(session, array) \ + __evlist__set_tracepoints_handlers(session->evlist, array, ARRAY_SIZE(array)) + +extern volatile int session_done; + +#define session_done() READ_ONCE(session_done) + +int perf_session__deliver_synth_event(struct perf_session *session, + union perf_event *event, + struct perf_sample *sample); +int perf_session__deliver_synth_attr_event(struct perf_session *session, + const struct perf_event_attr *attr, + u64 id); + +int perf_session__dsos_hit_all(struct perf_session *session); + +int perf_event__process_id_index(const struct perf_tool *tool, + struct perf_session *session, + union perf_event *event); + +int perf_event__process_finished_round(const struct perf_tool *tool, + union perf_event *event, + struct ordered_events *oe); + +struct perf_env *perf_session__env(struct perf_session *session); +uint16_t perf_session__e_machine(struct perf_session *session, uint32_t *e_flags); + +#endif /* __PERF_SESSION_H */ |
