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authorJiri Olsa <jolsa@redhat.com>2012-03-15 23:09:15 +0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-03-16 21:20:21 +0400
commit89812fc81f8d62d70433a8ff63d26819f372e8ec (patch)
tree8d2c6ad6eee1200f5107fa8063a002f415887ba3 /tools/perf/util/parse-events.l
parent641cc938815dfd09f8fa1ec72deb814f0938ac33 (diff)
downloadlinux-89812fc81f8d62d70433a8ff63d26819f372e8ec.tar.xz
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 <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>
Diffstat (limited to 'tools/perf/util/parse-events.l')
-rw-r--r--tools/perf/util/parse-events.l107
1 files changed, 107 insertions, 0 deletions
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
new file mode 100644
index 000000000000..44dbc359f0ae
--- /dev/null
+++ b/tools/perf/util/parse-events.l
@@ -0,0 +1,107 @@
+
+%option prefix="parse_events_"
+
+%{
+#include <errno.h>
+#include "../perf.h"
+#include "parse-events-bison.h"
+
+static int __value(char *str, int base, int token)
+{
+ long num;
+
+ errno = 0;
+ num = strtoul(str, NULL, base);
+ if (errno)
+ return PE_ERROR;
+
+ parse_events_lval.num = num;
+ return token;
+}
+
+static int value(int base)
+{
+ return __value(parse_events_text, base, PE_VALUE);
+}
+
+static int raw(void)
+{
+ return __value(parse_events_text + 1, 16, PE_RAW);
+}
+
+static int str(int token)
+{
+ parse_events_lval.str = strdup(parse_events_text);
+ return token;
+}
+
+static int sym(int type, int config)
+{
+ parse_events_lval.num = (type << 16) + config;
+ return PE_VALUE_SYM;
+}
+
+%}
+
+num_dec [0-9]+
+num_hex 0x[a-fA-F0-9]+
+num_raw_hex [a-fA-F0-9]+
+name [a-zA-Z_*?][a-zA-Z0-9_*?]*
+modifier_event [ukhp]{1,5}
+modifier_bp [rwx]
+
+%%
+cpu-cycles|cycles { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES); }
+stalled-cycles-frontend|idle-cycles-frontend { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND); }
+stalled-cycles-backend|idle-cycles-backend { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_STALLED_CYCLES_BACKEND); }
+instructions { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); }
+cache-references { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES); }
+cache-misses { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES); }
+branch-instructions|branches { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS); }
+branch-misses { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES); }
+bus-cycles { return sym(PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES); }
+cpu-clock { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_CLOCK); }
+task-clock { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK); }
+page-faults|faults { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS); }
+minor-faults { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MIN); }
+major-faults { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_PAGE_FAULTS_MAJ); }
+context-switches|cs { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CONTEXT_SWITCHES); }
+cpu-migrations|migrations { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_CPU_MIGRATIONS); }
+alignment-faults { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); }
+emulation-faults { return sym(PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); }
+
+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 { return str(PE_NAME_CACHE_TYPE); }
+
+load|loads|read |
+store|stores|write |
+prefetch|prefetches |
+speculative-read|speculative-load |
+refs|Reference|ops|access |
+misses|miss { return str(PE_NAME_CACHE_OP_RESULT); }
+
+mem: { return PE_PREFIX_MEM; }
+r{num_raw_hex} { return raw(); }
+{num_dec} { return value(10); }
+{num_hex} { return value(16); }
+
+{modifier_event} { return str(PE_MODIFIER_EVENT); }
+{modifier_bp} { return str(PE_MODIFIER_BP); }
+{name} { return str(PE_NAME); }
+"/" { return '/'; }
+- { return '-'; }
+, { return ','; }
+: { return ':'; }
+= { return '='; }
+
+%%
+
+int parse_events_wrap(void)
+{
+ return 1;
+}