From 89812fc81f8d62d70433a8ff63d26819f372e8ec Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Thu, 15 Mar 2012 20:09:15 +0100 Subject: perf tools: Add parser generator for events parsing Changing event parsing to use flex/bison parse generator. The event syntax stays as it was. grammar description: events: events ',' event | event event: event_def PE_MODIFIER_EVENT | event_def event_def: event_legacy_symbol sep_dc | event_legacy_cache sep_dc | event_legacy_breakpoint sep_dc | event_legacy_tracepoint sep_dc | event_legacy_numeric sep_dc | event_legacy_raw sep_dc event_legacy_symbol: PE_NAME_SYM event_legacy_cache: PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT | PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT | PE_NAME_CACHE_TYPE event_legacy_raw: PE_SEP_RAW PE_VALUE event_legacy_numeric: PE_VALUE ':' PE_VALUE event_legacy_breakpoint: PE_SEP_BP ':' PE_VALUE ':' PE_MODIFIER_BP event_breakpoint_type: PE_MODIFIER_BPTYPE | empty PE_NAME_SYM: cpu-cycles|cycles | stalled-cycles-frontend|idle-cycles-frontend | stalled-cycles-backend|idle-cycles-backend | instructions | cache-references | cache-misses | branch-instructions|branches | branch-misses | bus-cycles | cpu-clock | task-clock | page-faults|faults | minor-faults | major-faults | context-switches|cs | cpu-migrations|migrations | alignment-faults | emulation-faults PE_NAME_CACHE_TYPE: L1-dcache|l1-d|l1d|L1-data | L1-icache|l1-i|l1i|L1-instruction | LLC|L2 | dTLB|d-tlb|Data-TLB | iTLB|i-tlb|Instruction-TLB | branch|branches|bpu|btb|bpc | node PE_NAME_CACHE_OP_RESULT: load|loads|read | store|stores|write | prefetch|prefetches | speculative-read|speculative-load | refs|Reference|ops|access | misses|miss PE_MODIFIER_EVENT: [ukhp]{0,5} PE_MODIFIER_BP: [rwx] PE_SEP_BP: 'mem' PE_SEP_RAW: 'r' sep_dc: ':' | Added flex/bison files for event grammar parsing. The generated parser is part of the patch. Added makefile rule 'event-parser' to generate the parser code out of the bison/flex sources. Acked-by: Peter Zijlstra Signed-off-by: Jiri Olsa Link: http://lkml.kernel.org/n/tip-u4pfig5waq3ll2bfcdex8fgi@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/parse-events.y | 127 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 127 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 000000000000..4b4459e67a0a --- /dev/null +++ b/tools/perf/util/parse-events.y @@ -0,0 +1,127 @@ + +%name-prefix "parse_events_" +%parse-param {struct list_head *list} +%parse-param {int *idx} + +%{ + +#define YYDEBUG 1 + +#include +#include +#include "types.h" +#include "util.h" +#include "parse-events.h" + +extern int parse_events_lex (void); + +#define ABORT_ON(val) \ +do { \ + if (val) \ + YYABORT; \ +} while (0) + +%} + +%token PE_VALUE PE_VALUE_SYM PE_RAW +%token PE_NAME +%token PE_MODIFIER_EVENT PE_MODIFIER_BP +%token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT +%token PE_PREFIX_MEM PE_PREFIX_RAW +%token PE_ERROR +%type PE_VALUE +%type PE_VALUE_SYM +%type PE_RAW +%type PE_NAME +%type PE_NAME_CACHE_TYPE +%type PE_NAME_CACHE_OP_RESULT +%type PE_MODIFIER_EVENT +%type PE_MODIFIER_BP + +%union +{ + char *str; + unsigned long num; +} +%% + +events: +events ',' event | event + +event: +event_def PE_MODIFIER_EVENT +{ + ABORT_ON(parse_events_modifier(list, $2)); +} +| +event_def + +event_def: event_legacy_symbol sep_dc | + event_legacy_cache sep_dc | + event_legacy_mem | + event_legacy_tracepoint sep_dc | + event_legacy_numeric sep_dc | + event_legacy_raw sep_dc + +event_legacy_symbol: +PE_VALUE_SYM +{ + int type = $1 >> 16; + int config = $1 & 255; + + ABORT_ON(parse_events_add_numeric(list, idx, type, config)); +} + +event_legacy_cache: +PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT +{ + ABORT_ON(parse_events_add_cache(list, idx, $1, $3, $5)); +} +| +PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT +{ + ABORT_ON(parse_events_add_cache(list, idx, $1, $3, NULL)); +} +| +PE_NAME_CACHE_TYPE +{ + ABORT_ON(parse_events_add_cache(list, idx, $1, NULL, NULL)); +} + +event_legacy_mem: +PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc +{ + ABORT_ON(parse_events_add_breakpoint(list, idx, (void *) $2, $4)); +} +| +PE_PREFIX_MEM PE_VALUE sep_dc +{ + ABORT_ON(parse_events_add_breakpoint(list, idx, (void *) $2, NULL)); +} + +event_legacy_tracepoint: +PE_NAME ':' PE_NAME +{ + ABORT_ON(parse_events_add_tracepoint(list, idx, $1, $3)); +} + +event_legacy_numeric: +PE_VALUE ':' PE_VALUE +{ + ABORT_ON(parse_events_add_numeric(list, idx, $1, $3)); +} + +event_legacy_raw: +PE_RAW +{ + ABORT_ON(parse_events_add_numeric(list, idx, PERF_TYPE_RAW, $1)); +} + +sep_dc: ':' | + +%% + +void parse_events_error(struct list_head *list __used, int *idx __used, + char const *msg __used) +{ +} -- cgit v1.2.3-59-g8ed1b