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https://github.com/torvalds/linux
synced 2024-10-23 03:37:40 +00:00
89812fc81f
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 <peterz@infradead.org>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-u4pfig5waq3ll2bfcdex8fgi@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
128 lines
2.2 KiB
Plaintext
128 lines
2.2 KiB
Plaintext
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%name-prefix "parse_events_"
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%parse-param {struct list_head *list}
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%parse-param {int *idx}
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%{
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#define YYDEBUG 1
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#include <linux/compiler.h>
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#include <linux/list.h>
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#include "types.h"
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#include "util.h"
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#include "parse-events.h"
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extern int parse_events_lex (void);
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#define ABORT_ON(val) \
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do { \
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if (val) \
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YYABORT; \
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} while (0)
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%}
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%token PE_VALUE PE_VALUE_SYM PE_RAW
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%token PE_NAME
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%token PE_MODIFIER_EVENT PE_MODIFIER_BP
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%token PE_NAME_CACHE_TYPE PE_NAME_CACHE_OP_RESULT
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%token PE_PREFIX_MEM PE_PREFIX_RAW
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%token PE_ERROR
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%type <num> PE_VALUE
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%type <num> PE_VALUE_SYM
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%type <num> PE_RAW
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%type <str> PE_NAME
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%type <str> PE_NAME_CACHE_TYPE
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%type <str> PE_NAME_CACHE_OP_RESULT
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%type <str> PE_MODIFIER_EVENT
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%type <str> PE_MODIFIER_BP
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%union
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{
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char *str;
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unsigned long num;
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}
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%%
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events:
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events ',' event | event
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event:
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event_def PE_MODIFIER_EVENT
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{
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ABORT_ON(parse_events_modifier(list, $2));
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}
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event_def
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event_def: event_legacy_symbol sep_dc |
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event_legacy_cache sep_dc |
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event_legacy_mem |
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event_legacy_tracepoint sep_dc |
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event_legacy_numeric sep_dc |
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event_legacy_raw sep_dc
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event_legacy_symbol:
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PE_VALUE_SYM
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{
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int type = $1 >> 16;
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int config = $1 & 255;
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ABORT_ON(parse_events_add_numeric(list, idx, type, config));
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}
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event_legacy_cache:
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PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT
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{
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ABORT_ON(parse_events_add_cache(list, idx, $1, $3, $5));
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}
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PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT
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{
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ABORT_ON(parse_events_add_cache(list, idx, $1, $3, NULL));
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}
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PE_NAME_CACHE_TYPE
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{
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ABORT_ON(parse_events_add_cache(list, idx, $1, NULL, NULL));
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}
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event_legacy_mem:
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PE_PREFIX_MEM PE_VALUE ':' PE_MODIFIER_BP sep_dc
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{
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ABORT_ON(parse_events_add_breakpoint(list, idx, (void *) $2, $4));
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}
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PE_PREFIX_MEM PE_VALUE sep_dc
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{
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ABORT_ON(parse_events_add_breakpoint(list, idx, (void *) $2, NULL));
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}
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event_legacy_tracepoint:
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PE_NAME ':' PE_NAME
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{
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ABORT_ON(parse_events_add_tracepoint(list, idx, $1, $3));
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}
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event_legacy_numeric:
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PE_VALUE ':' PE_VALUE
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{
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ABORT_ON(parse_events_add_numeric(list, idx, $1, $3));
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}
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event_legacy_raw:
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PE_RAW
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{
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ABORT_ON(parse_events_add_numeric(list, idx, PERF_TYPE_RAW, $1));
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}
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sep_dc: ':' |
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%%
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void parse_events_error(struct list_head *list __used, int *idx __used,
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char const *msg __used)
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{
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}
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