From 4352b8aee98005853aa63f57d6377282de17a33f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 23 Aug 2026 13:28:57 -0700 Subject: Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux Pull I3C updates from Alexandre Belloni: "A new driver this cycle, for the AMD AXI I3C controller. There are also new features such as IBI wakeup support, SETAASA device discovery and ACPI support for the the DAA methods, meaning we can now communicate with the SPD devices on DDR5 modules. New driver: - AMD AXI I3C master controller Subsystem: - I3C Common Command Code (CCC) handling improvements, especially around GET CCCs - SETAASA device discovery support - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as well as I2C devices on I3C bus - IBI-based wakeup support Drivers: - dw: SETAASA support - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C controller support, PIO queue management support for HCI v1.2 - renesas: improve suspend to RAM support, add runtime PM support" * tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits) i3c: dw: reduce do_daa time if there's no client i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2 i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode i3c: dw: rename "pclk" to "apb" to match dt-binding i3c: dw: make struct dw_i3c_cmd smaller i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding i3c: renesas: Don't register devices when ENTDAA times out i3c: master: dw-i3c-master: fix OD timing for first broadcast i3c: mipi-i3c-hci: Advertise IBI wakeup capability i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev() i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI i3c: master: Reject IBI requests from non-IBI-capable devices i3c: master: Add helper to query bus wakeup requirements i3c: master: Report wakeup events for IBIs i3c: master: Support IBI-based wakeup capability i3c: master: Fix potential UAF in i3c_device_match() i3c: master: Fix potential UAF in i3c_device_uevent() i3c: Make dev->desc locking assumptions explicit i3c: master: Fix use-after-free of master->this ... --- tools/perf/util/parse-events.y | 647 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 647 insertions(+) create mode 100644 tools/perf/util/parse-events.y (limited to 'tools/perf/util/parse-events.y') diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y new file mode 100644 index 000000000..b531b1f0c --- /dev/null +++ b/tools/perf/util/parse-events.y @@ -0,0 +1,647 @@ +%define api.pure full +%parse-param {void *_parse_state} +%parse-param {void *scanner} +%lex-param {void* scanner} +%locations + +%{ + +#ifndef NDEBUG +#define YYDEBUG 1 +#endif + +#include +#include +#include +#include "pmu.h" +#include "pmus.h" +#include "evsel.h" +#include "parse-events.h" +#include "parse-events-bison.h" + +int parse_events_lex(YYSTYPE * yylval_param, YYLTYPE * yylloc_param , void *yyscanner); +void parse_events_error(YYLTYPE *loc, void *parse_state, void *scanner, char const *msg); + +#define PE_ABORT(val) \ +do { \ + if (val == -ENOMEM) \ + YYNOMEM; \ + YYABORT; \ +} while (0) + +static struct list_head* alloc_list(void) +{ + struct list_head *list; + + list = malloc(sizeof(*list)); + if (!list) + return NULL; + + INIT_LIST_HEAD(list); + return list; +} + +static void free_list_evsel(struct list_head* list_evsel) +{ + struct evsel *evsel, *tmp; + + list_for_each_entry_safe(evsel, tmp, list_evsel, core.node) { + list_del_init(&evsel->core.node); + evsel__put(evsel); + } + free(list_evsel); +} + +%} + +%token PE_START_EVENTS PE_START_TERMS +%token PE_VALUE PE_TERM +%token PE_EVENT_NAME +%token PE_RAW PE_NAME +%token PE_MODIFIER_EVENT PE_MODIFIER_BP PE_BP_COLON PE_BP_SLASH +%token PE_PREFIX_MEM +%token PE_ERROR +%token PE_DRV_CFG_TERM +%type PE_VALUE +%type PE_MODIFIER_EVENT +%type PE_TERM +%type PE_RAW +%type PE_NAME +%type PE_MODIFIER_BP +%type PE_EVENT_NAME +%type PE_DRV_CFG_TERM +%type name_or_raw +%destructor { free ($$); } +%type event_term +%destructor { parse_events_term__delete ($$); } +%type event_config +%type opt_event_config +%type opt_pmu_config +%destructor { parse_events_terms__delete ($$); } +%type event_pmu +%type event_legacy_mem +%type event_legacy_tracepoint +%type event_legacy_numeric +%type event_legacy_raw +%type event_def +%type event_mod +%type event_name +%type event +%type events +%type group_def +%type group +%type groups +%destructor { free_list_evsel ($$); } +%type tracepoint_name +%destructor { free ($$.sys); free ($$.event); } + +%union +{ + char *str; + u64 num; + struct parse_events_modifier mod; + enum parse_events__term_type term_type; + struct list_head *list_evsel; + struct parse_events_terms *list_terms; + struct parse_events_term *term; + struct tracepoint_name { + char *sys; + char *event; + } tracepoint_name; +} +%% + + /* + * Entry points. We are either parsing events or terminals. Just terminal + * parsing is used for parsing events in sysfs. + */ +start: +PE_START_EVENTS start_events +| +PE_START_TERMS start_terms + +start_events: groups +{ + /* Take the parsed events, groups.. and place into parse_state. */ + struct list_head *groups = $1; + struct parse_events_state *parse_state = _parse_state; + + list_splice_tail(groups, &parse_state->list); + free(groups); +} + +groups: /* A list of groups or events. */ +groups ',' group +{ + /* Merge group into the list of events/groups. */ + struct list_head *groups = $1; + struct list_head *group = $3; + + list_splice_tail(group, groups); + free(group); + $$ = groups; +} +| +groups ',' event +{ + /* Merge event into the list of events/groups. */ + struct list_head *groups = $1; + struct list_head *event = $3; + + + list_splice_tail(event, groups); + free(event); + $$ = groups; +} +| +group +| +event + +group: +group_def ':' PE_MODIFIER_EVENT +{ + /* Apply the modifier to the events in the group_def. */ + struct list_head *list = $1; + int err; + + err = parse_events__modifier_group(_parse_state, &@3, list, $3); + if (err) + YYABORT; + $$ = list; +} +| +group_def + +group_def: +PE_NAME '{' events '}' +{ + struct list_head *list = $3; + + /* + * Set the first entry of list to be the leader. Set the group name on + * the leader to $1 taking ownership. + */ + parse_events__set_leader($1, list); + $$ = list; +} +| +'{' events '}' +{ + struct list_head *list = $2; + + /* Set the first entry of list to be the leader clearing the group name. */ + parse_events__set_leader(NULL, list); + $$ = list; +} + +events: +events ',' event +{ + struct list_head *events = $1; + struct list_head *event = $3; + + list_splice_tail(event, events); + free(event); + $$ = events; +} +| +event + +event: event_mod + +event_mod: +event_name PE_MODIFIER_EVENT +{ + struct list_head *list = $1; + int err; + + /* + * Apply modifier on all events added by single event definition + * (there could be more events added for multiple tracepoint + * definitions via '*?'. + */ + err = parse_events__modifier_event(_parse_state, &@2, list, $2); + if (err) + YYABORT; + $$ = list; +} +| +event_name + +event_name: +PE_EVENT_NAME event_def +{ + /* + * When an event is parsed the text is rewound and the entire text of + * the event is set to the str of PE_EVENT_NAME token matched here. If + * no name was on an event via a term, set the name to the entire text + * taking ownership of the allocation. + */ + int err = parse_events__set_default_name($2, $1); + + if (err) { + free_list_evsel($2); + YYNOMEM; + } + $$ = $2; +} +| +event_def + +event_def: event_pmu | + event_legacy_mem sep_dc | + event_legacy_tracepoint sep_dc | + event_legacy_numeric sep_dc | + event_legacy_raw sep_dc + +event_pmu: +PE_NAME opt_pmu_config +{ + /* List of created evsels. */ + struct list_head *list = NULL; + int err = parse_events_multi_pmu_add_or_add_pmu(_parse_state, $1, $2, &list, &@1); + + parse_events_terms__delete($2); + free($1); + if (err) + PE_ABORT(err); + $$ = list; +} +| +PE_NAME sep_dc +{ + struct list_head *list; + int err; + + err = parse_events_multi_pmu_add(_parse_state, $1, /*const_parsed_terms*/NULL, &list, &@1); + if (err < 0) { + struct parse_events_state *parse_state = _parse_state; + struct parse_events_error *error = parse_state->error; + char *help; + + if (asprintf(&help, "Unable to find event on a PMU of '%s'", $1) < 0) + help = NULL; + parse_events_error__handle(error, @1.first_column, strdup("Bad event name"), help); + free($1); + PE_ABORT(err); + } + free($1); + $$ = list; +} + +event_legacy_mem: +PE_PREFIX_MEM PE_VALUE PE_BP_SLASH PE_VALUE PE_BP_COLON PE_MODIFIER_BP opt_event_config +{ + struct list_head *list; + int err; + + list = alloc_list(); + if (!list) + YYNOMEM; + + err = parse_events_add_breakpoint(_parse_state, list, + $2, $6, $4, $7); + parse_events_terms__delete($7); + free($6); + if (err) { + free(list); + PE_ABORT(err); + } + $$ = list; +} +| +PE_PREFIX_MEM PE_VALUE PE_BP_SLASH PE_VALUE opt_event_config +{ + struct list_head *list; + int err; + + list = alloc_list(); + if (!list) + YYNOMEM; + + err = parse_events_add_breakpoint(_parse_state, list, + $2, NULL, $4, $5); + parse_events_terms__delete($5); + if (err) { + free(list); + PE_ABORT(err); + } + $$ = list; +} +| +PE_PREFIX_MEM PE_VALUE PE_BP_COLON PE_MODIFIER_BP opt_event_config +{ + struct list_head *list; + int err; + + list = alloc_list(); + if (!list) + YYNOMEM; + + err = parse_events_add_breakpoint(_parse_state, list, + $2, $4, 0, $5); + parse_events_terms__delete($5); + free($4); + if (err) { + free(list); + PE_ABORT(err); + } + $$ = list; +} +| +PE_PREFIX_MEM PE_VALUE opt_event_config +{ + struct list_head *list; + int err; + + list = alloc_list(); + if (!list) + YYNOMEM; + err = parse_events_add_breakpoint(_parse_state, list, + $2, NULL, 0, $3); + parse_events_terms__delete($3); + if (err) { + free(list); + PE_ABORT(err); + } + $$ = list; +} + +event_legacy_tracepoint: +tracepoint_name opt_event_config +{ + struct parse_events_state *parse_state = _parse_state; + struct parse_events_error *error = parse_state->error; + struct list_head *list; + int err; + + list = alloc_list(); + if (!list) + YYNOMEM; + + err = parse_events_add_tracepoint(parse_state, list, $1.sys, $1.event, + error, $2, &@1); + + parse_events_terms__delete($2); + free($1.sys); + free($1.event); + if (err) { + free(list); + PE_ABORT(err); + } + $$ = list; +} + +tracepoint_name: +PE_NAME ':' PE_NAME +{ + struct tracepoint_name tracepoint = {$1, $3}; + + $$ = tracepoint; +} + +event_legacy_numeric: +PE_VALUE ':' PE_VALUE opt_event_config +{ + struct list_head *list; + int err; + + list = alloc_list(); + if (!list) + YYNOMEM; + err = parse_events_add_numeric(_parse_state, list, (u32)$1, $3, $4, + /*wildcard=*/false); + parse_events_terms__delete($4); + if (err) { + free(list); + PE_ABORT(err); + } + $$ = list; +} + +event_legacy_raw: +PE_RAW opt_event_config +{ + struct list_head *list; + int err; + u64 num; + + list = alloc_list(); + if (!list) + YYNOMEM; + errno = 0; + num = strtoull($1 + 1, NULL, 16); + /* Given the lexer will only give [a-fA-F0-9]+ a failure here should be impossible. */ + if (errno) + YYABORT; + free($1); + err = parse_events_add_numeric(_parse_state, list, PERF_TYPE_RAW, num, $2, + /*wildcard=*/false); + parse_events_terms__delete($2); + if (err) { + free(list); + PE_ABORT(err); + } + $$ = list; +} + +opt_event_config: +'/' event_config '/' +{ + $$ = $2; +} +| +'/' '/' +{ + $$ = NULL; +} +| +{ + $$ = NULL; +} + +opt_pmu_config: +'/' event_config '/' +{ + $$ = $2; +} +| +'/' '/' +{ + $$ = NULL; +} + +start_terms: event_config +{ + struct parse_events_state *parse_state = _parse_state; + if (parse_state->terms) { + parse_events_terms__delete ($1); + YYABORT; + } + parse_state->terms = $1; +} + +event_config: +event_config ',' event_term +{ + struct parse_events_terms *head = $1; + struct parse_events_term *term = $3; + + if (!head) { + parse_events_term__delete(term); + YYABORT; + } + list_add_tail(&term->list, &head->terms); + $$ = $1; +} +| +event_term +{ + struct parse_events_terms *head = malloc(sizeof(*head)); + struct parse_events_term *term = $1; + + if (!head) + YYNOMEM; + parse_events_terms__init(head); + list_add_tail(&term->list, &head->terms); + $$ = head; +} + +name_or_raw: PE_RAW | PE_NAME + +event_term: +PE_RAW +{ + struct parse_events_term *term; + int err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_RAW, + strdup("raw"), $1, &@1, &@1); + + if (err) { + free($1); + PE_ABORT(err); + } + $$ = term; +} +| +name_or_raw '=' name_or_raw +{ + struct parse_events_term *term; + int err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_USER, $1, $3, &@1, &@3); + + if (err) { + free($1); + free($3); + PE_ABORT(err); + } + $$ = term; +} +| +name_or_raw '=' PE_VALUE +{ + struct parse_events_term *term; + int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER, + $1, $3, /*novalue=*/false, &@1, &@3); + + if (err) { + free($1); + PE_ABORT(err); + } + $$ = term; +} +| +PE_NAME +{ + struct parse_events_term *term; + int err = parse_events_term__num(&term, PARSE_EVENTS__TERM_TYPE_USER, + $1, /*num=*/1, /*novalue=*/true, &@1, /*loc_val=*/NULL); + + if (err) { + free($1); + PE_ABORT(err); + } + $$ = term; +} +| +PE_TERM '=' name_or_raw +{ + struct parse_events_term *term; + int err = parse_events_term__str(&term, $1, /*config=*/NULL, $3, &@1, &@3); + + if (err) { + free($3); + PE_ABORT(err); + } + $$ = term; +} +| +PE_TERM '=' PE_TERM +{ + struct parse_events_term *term; + int err = parse_events_term__term(&term, $1, $3, &@1, &@3); + + if (err) + PE_ABORT(err); + + $$ = term; +} +| +PE_TERM '=' PE_VALUE +{ + struct parse_events_term *term; + int err = parse_events_term__num(&term, $1, + /*config=*/NULL, $3, /*novalue=*/false, + &@1, &@3); + + if (err) + PE_ABORT(err); + + $$ = term; +} +| +PE_TERM +{ + struct parse_events_term *term; + int err = parse_events_term__num(&term, $1, + /*config=*/NULL, /*num=*/1, /*novalue=*/true, + &@1, /*loc_val=*/NULL); + + if (err) + PE_ABORT(err); + + $$ = term; +} +| +PE_DRV_CFG_TERM +{ + struct parse_events_term *term; + char *config = strdup($1); + int err; + + if (!config) + YYNOMEM; + err = parse_events_term__str(&term, PARSE_EVENTS__TERM_TYPE_DRV_CFG, config, $1, &@1, NULL); + if (err) { + free($1); + free(config); + PE_ABORT(err); + } + $$ = term; +} + +sep_dc: ':' | + +%% + +void parse_events_error(YYLTYPE *loc, void *_parse_state, + void *scanner __maybe_unused, + char const *msg __maybe_unused) +{ + struct parse_events_state *parse_state = _parse_state; + + if (!parse_state->error || !list_empty(&parse_state->error->list)) + return; + + parse_events_error__handle(parse_state->error, loc->last_column, + strdup("Unrecognized input"), NULL); +} -- cgit v1.3.1