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1%option prefix="perf_bpf_filter_"2%option noyywrap3 4%{5#include <stdio.h>6#include <stdlib.h>7#include <linux/perf_event.h>8 9#include "bpf-filter.h"10#include "bpf-filter-bison.h"11 12extern int perf_bpf_filter_needs_path;13 14static int sample(enum perf_bpf_filter_term term)15{16 perf_bpf_filter_needs_path = 0;17 perf_bpf_filter_lval.sample.term = term;18 perf_bpf_filter_lval.sample.part = 0;19 return BFT_SAMPLE;20}21 22static int sample_part(enum perf_bpf_filter_term term, int part)23{24 perf_bpf_filter_needs_path = 0;25 perf_bpf_filter_lval.sample.term = term;26 perf_bpf_filter_lval.sample.part = part;27 return BFT_SAMPLE;28}29 30static int sample_path(enum perf_bpf_filter_term term)31{32 perf_bpf_filter_needs_path = 1;33 perf_bpf_filter_lval.sample.term = term;34 perf_bpf_filter_lval.sample.part = 0;35 return BFT_SAMPLE_PATH;36}37 38static int operator(enum perf_bpf_filter_op op)39{40 perf_bpf_filter_lval.op = op;41 return BFT_OP;42}43 44static int value(int base)45{46 long num;47 48 errno = 0;49 num = strtoul(perf_bpf_filter_text, NULL, base);50 if (errno)51 return BFT_ERROR;52 53 perf_bpf_filter_lval.num = num;54 return BFT_NUM;55}56 57static int constant(int val)58{59 perf_bpf_filter_lval.num = val;60 return BFT_NUM;61}62 63static int path_or_error(void)64{65 if (!perf_bpf_filter_needs_path) {66 printf("perf_bpf_filter: Error: Unexpected item: %s\n",67 perf_bpf_filter_text);68 return BFT_ERROR;69 }70 perf_bpf_filter_lval.path = perf_bpf_filter_text;71 return BFT_PATH;72}73 74%}75 76num_dec [0-9]+77num_hex 0[Xx][0-9a-fA-F]+78space [ \t]+79path [^ \t\n]+80ident [_a-zA-Z][_a-zA-Z0-9]+81 82%%83 84{num_dec} { return value(10); }85{num_hex} { return value(16); }86{space} { }87 88ip { return sample(PBF_TERM_IP); }89id { return sample(PBF_TERM_ID); }90tid { return sample(PBF_TERM_TID); }91pid { return sample_part(PBF_TERM_TID, 1); }92cpu { return sample(PBF_TERM_CPU); }93time { return sample(PBF_TERM_TIME); }94addr { return sample(PBF_TERM_ADDR); }95period { return sample(PBF_TERM_PERIOD); }96txn { return sample(PBF_TERM_TRANSACTION); }97weight { return sample(PBF_TERM_WEIGHT); }98weight1 { return sample_part(PBF_TERM_WEIGHT_STRUCT, 1); }99weight2 { return sample_part(PBF_TERM_WEIGHT_STRUCT, 2); }100weight3 { return sample_part(PBF_TERM_WEIGHT_STRUCT, 3); }101ins_lat { return sample_part(PBF_TERM_WEIGHT_STRUCT, 2); } /* alias for weight2 */102p_stage_cyc { return sample_part(PBF_TERM_WEIGHT_STRUCT, 3); } /* alias for weight3 */103retire_lat { return sample_part(PBF_TERM_WEIGHT_STRUCT, 3); } /* alias for weight3 */104phys_addr { return sample(PBF_TERM_PHYS_ADDR); }105code_pgsz { return sample(PBF_TERM_CODE_PAGE_SIZE); }106data_pgsz { return sample(PBF_TERM_DATA_PAGE_SIZE); }107mem_op { return sample_part(PBF_TERM_DATA_SRC, 1); }108mem_lvlnum { return sample_part(PBF_TERM_DATA_SRC, 2); }109mem_lvl { return sample_part(PBF_TERM_DATA_SRC, 2); } /* alias for mem_lvlnum */110mem_snoop { return sample_part(PBF_TERM_DATA_SRC, 3); } /* include snoopx */111mem_remote { return sample_part(PBF_TERM_DATA_SRC, 4); }112mem_lock { return sample_part(PBF_TERM_DATA_SRC, 5); }113mem_dtlb { return sample_part(PBF_TERM_DATA_SRC, 6); }114mem_blk { return sample_part(PBF_TERM_DATA_SRC, 7); }115mem_hops { return sample_part(PBF_TERM_DATA_SRC, 8); }116uid { return sample(PBF_TERM_UID); }117gid { return sample(PBF_TERM_GID); }118cgroup { return sample_path(PBF_TERM_CGROUP); }119 120"==" { return operator(PBF_OP_EQ); }121"!=" { return operator(PBF_OP_NEQ); }122">" { return operator(PBF_OP_GT); }123"<" { return operator(PBF_OP_LT); }124">=" { return operator(PBF_OP_GE); }125"<=" { return operator(PBF_OP_LE); }126"&" { return operator(PBF_OP_AND); }127 128na { return constant(PERF_MEM_OP_NA); }129load { return constant(PERF_MEM_OP_LOAD); }130store { return constant(PERF_MEM_OP_STORE); }131pfetch { return constant(PERF_MEM_OP_PFETCH); }132exec { return constant(PERF_MEM_OP_EXEC); }133 134l1 { return constant(PERF_MEM_LVLNUM_L1); }135l2 { return constant(PERF_MEM_LVLNUM_L2); }136l3 { return constant(PERF_MEM_LVLNUM_L3); }137l4 { return constant(PERF_MEM_LVLNUM_L4); }138cxl { return constant(PERF_MEM_LVLNUM_CXL); }139io { return constant(PERF_MEM_LVLNUM_IO); }140any_cache { return constant(PERF_MEM_LVLNUM_ANY_CACHE); }141lfb { return constant(PERF_MEM_LVLNUM_LFB); }142ram { return constant(PERF_MEM_LVLNUM_RAM); }143pmem { return constant(PERF_MEM_LVLNUM_PMEM); }144 145none { return constant(PERF_MEM_SNOOP_NONE); }146hit { return constant(PERF_MEM_SNOOP_HIT); }147miss { return constant(PERF_MEM_SNOOP_MISS); }148hitm { return constant(PERF_MEM_SNOOP_HITM); }149fwd { return constant(PERF_MEM_SNOOPX_FWD); }150peer { return constant(PERF_MEM_SNOOPX_PEER); }151 152remote { return constant(PERF_MEM_REMOTE_REMOTE); }153 154locked { return constant(PERF_MEM_LOCK_LOCKED); }155 156l1_hit { return constant(PERF_MEM_TLB_L1 | PERF_MEM_TLB_HIT); }157l1_miss { return constant(PERF_MEM_TLB_L1 | PERF_MEM_TLB_MISS); }158l2_hit { return constant(PERF_MEM_TLB_L2 | PERF_MEM_TLB_HIT); }159l2_miss { return constant(PERF_MEM_TLB_L2 | PERF_MEM_TLB_MISS); }160any_hit { return constant(PERF_MEM_TLB_HIT); }161any_miss { return constant(PERF_MEM_TLB_MISS); }162walk { return constant(PERF_MEM_TLB_WK); }163os { return constant(PERF_MEM_TLB_OS); }164fault { return constant(PERF_MEM_TLB_OS); } /* alias for os */165 166by_data { return constant(PERF_MEM_BLK_DATA); }167by_addr { return constant(PERF_MEM_BLK_ADDR); }168 169hops0 { return constant(PERF_MEM_HOPS_0); }170hops1 { return constant(PERF_MEM_HOPS_1); }171hops2 { return constant(PERF_MEM_HOPS_2); }172hops3 { return constant(PERF_MEM_HOPS_3); }173 174"," { return ','; }175"||" { return BFT_LOGICAL_OR; }176 177{path} { return path_or_error(); }178 179%%180