The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008, The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | /* |
| 18 | * Binary implementation of the original opcontrol script due to missing tools |
| 19 | * like awk, test, etc. |
| 20 | */ |
| 21 | |
| 22 | #include <unistd.h> |
| 23 | #include <getopt.h> |
| 24 | #include <stdio.h> |
| 25 | #include <stdlib.h> |
| 26 | #include <errno.h> |
| 27 | #include <fcntl.h> |
| 28 | #include <signal.h> |
| 29 | #include <sys/stat.h> |
| 30 | |
| 31 | #include "op_config.h" |
| 32 | |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 33 | #define verbose(fmt...) if (verbose_print) printf(fmt) |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 34 | |
| 35 | /* Experiments found that using a small interval may hang the device, and the |
| 36 | * more events tracked simultaneously, the longer the interval has to be. |
| 37 | */ |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 38 | |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 39 | #if defined(__i386__) || defined(__x86_64__) |
| 40 | #define MAX_EVENTS 2 |
| 41 | int min_count[MAX_EVENTS] = {60000, 100000}; |
| 42 | #elif !defined(WITH_ARM_V7_A) |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 43 | #define MAX_EVENTS 3 |
Ben Cheng | 1434507 | 2009-09-16 11:31:39 -0700 | [diff] [blame] | 44 | int min_count[MAX_EVENTS] = {150000, 200000, 250000}; |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 45 | #else |
Ben Cheng | 1434507 | 2009-09-16 11:31:39 -0700 | [diff] [blame] | 46 | #define MAX_EVENTS 5 |
| 47 | int min_count[MAX_EVENTS] = {150000, 200000, 250000, 300000, 350000}; |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 48 | #endif |
| 49 | |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 50 | int verbose_print; |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 51 | int list_events; |
| 52 | int show_usage; |
| 53 | int setup; |
| 54 | int quick; |
| 55 | int num_events; |
| 56 | int start; |
| 57 | int stop; |
| 58 | int reset; |
| 59 | |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 60 | int selected_events[MAX_EVENTS]; |
| 61 | int selected_counts[MAX_EVENTS]; |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 62 | |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 63 | char callgraph[8]; |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 64 | char kernel_range[512]; |
| 65 | char vmlinux[512]; |
| 66 | |
| 67 | struct option long_options[] = { |
| 68 | {"help", 0, &show_usage, 1}, |
| 69 | {"list-events", 0, &list_events, 1}, |
| 70 | {"reset", 0, &reset, 1}, |
| 71 | {"setup", 0, &setup, 1}, |
| 72 | {"quick", 0, &quick, 1}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 73 | {"callgraph", 1, 0, 'c'}, |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 74 | {"event", 1, 0, 'e'}, |
| 75 | {"vmlinux", 1, 0, 'v'}, |
| 76 | {"kernel-range", 1, 0, 'r'}, |
| 77 | {"start", 0, &start, 1}, |
| 78 | {"stop", 0, &stop, 1}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 79 | {"dump", 0, 0, 'd'}, |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 80 | {"shutdown", 0, 0, 'h'}, |
| 81 | {"status", 0, 0, 't'}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 82 | {"verbose", 0, 0, 'V'}, |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 83 | {0, 0, 0, 0}, |
| 84 | }; |
| 85 | |
| 86 | struct event_info { |
| 87 | int id; |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 88 | int um; |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 89 | const char *name; |
| 90 | const char *explanation; |
| 91 | } event_info[] = { |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 92 | #if defined(__i386__) || defined(__x86_64__) |
| 93 | /* INTEL_ARCH_PERFMON events */ |
| 94 | |
| 95 | /* 0x3c counters:cpuid um:zero minimum:6000 filter:0 name:CPU_CLK_UNHALTED : |
| 96 | * Clock cycles when not halted |
| 97 | */ |
| 98 | {0x3c, 0, "CPU_CLK_UNHALTED", |
| 99 | "Clock cycles when not halted" }, |
| 100 | |
| 101 | /* event:0x3c counters:cpuid um:one minimum:6000 filter:2 name:UNHALTED_REFERENCE_CYCLES : |
| 102 | * Unhalted reference cycles |
| 103 | */ |
| 104 | {0x3c, 1, "UNHALTED_REFERENCE_CYCLES", |
| 105 | "Unhalted reference cycles" }, |
| 106 | |
| 107 | /* event:0xc0 counters:cpuid um:zero minimum:6000 filter:1 name:INST_RETIRED : |
| 108 | * number of instructions retired |
| 109 | */ |
| 110 | {0xc0, 0, "INST_RETIRED", |
| 111 | "number of instructions retired"}, |
| 112 | |
| 113 | /* event:0x2e counters:cpuid um:x41 minimum:6000 filter:5 name:LLC_MISSES : |
| 114 | * Last level cache demand requests from this core that missed the LLC |
| 115 | */ |
| 116 | {0x2e, 0x41, "LLC_MISSES", |
| 117 | "Last level cache demand requests from this core that missed the LLC"}, |
| 118 | |
| 119 | /* event:0x2e counters:cpuid um:x4f minimum:6000 filter:4 name:LLC_REFS : |
| 120 | * Last level cache demand requests from this core |
| 121 | */ |
| 122 | {0x2e, 0x4f, "LLC_REFS", |
| 123 | "Last level cache demand requests from this core"}, |
| 124 | |
| 125 | /* event:0xc4 counters:cpuid um:zero minimum:500 filter:6 name:BR_INST_RETIRED : |
| 126 | * number of branch instructions retired |
| 127 | */ |
| 128 | {0xc4, 0, "BR_INST_RETIRED", |
| 129 | "number of branch instructions retired"}, |
| 130 | |
| 131 | /* event:0xc5 counters:cpuid um:zero minimum:500 filter:7 name:BR_MISS_PRED_RETIRED : |
| 132 | * number of mispredicted branches retired (precise) |
| 133 | */ |
| 134 | {0xc5, 0, "BR_MISS_PRED_RETIRED", |
| 135 | "number of mispredicted branches retired (precise)"}, |
| 136 | |
| 137 | #elif !defined(WITH_ARM_V7_A) |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 138 | /* ARM V6 events */ |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 139 | {0x00, 0, "IFU_IFETCH_MISS", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 140 | "number of instruction fetch misses"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 141 | {0x01, 0, "CYCLES_IFU_MEM_STALL", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 142 | "cycles instruction fetch pipe is stalled"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 143 | {0x02, 0, "CYCLES_DATA_STALL", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 144 | "cycles stall occurs for due to data dependency"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 145 | {0x03, 0, "ITLB_MISS", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 146 | "number of Instruction MicroTLB misses"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 147 | {0x04, 0, "DTLB_MISS", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 148 | "number of Data MicroTLB misses"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 149 | {0x05, 0, "BR_INST_EXECUTED", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 150 | "branch instruction executed w/ or w/o program flow change"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 151 | {0x06, 0, "BR_INST_MISS_PRED", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 152 | "branch mispredicted"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 153 | {0x07, 0, "INSN_EXECUTED", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 154 | "instructions executed"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 155 | {0x09, 0, "DCACHE_ACCESS", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 156 | "data cache access, cacheable locations"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 157 | {0x0a, 0, "DCACHE_ACCESS_ALL", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 158 | "data cache access, all locations"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 159 | {0x0b, 0, "DCACHE_MISS", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 160 | "data cache miss"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 161 | {0x0c, 0, "DCACHE_WB", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 162 | "data cache writeback, 1 event for every half cacheline"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 163 | {0x0d, 0, "PC_CHANGE", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 164 | "number of times the program counter was changed without a mode switch"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 165 | {0x0f, 0, "TLB_MISS", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 166 | "Main TLB miss"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 167 | {0x10, 0, "EXP_EXTERNAL", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 168 | "Explicit external data access"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 169 | {0x11, 0, "LSU_STALL", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 170 | "cycles stalled because Load Store request queue is full"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 171 | {0x12, 0, "WRITE_DRAIN", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 172 | "Times write buffer was drained"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 173 | {0xff, 0, "CPU_CYCLES", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 174 | "clock cycles counter"}, |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 175 | #else |
| 176 | /* ARM V7 events */ |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 177 | {0x00, 0, "PMNC_SW_INCR", |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 178 | "Software increment of PMNC registers"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 179 | {0x01, 0, "IFETCH_MISS", |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 180 | "Instruction fetch misses from cache or normal cacheable memory"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 181 | {0x02, 0, "ITLB_MISS", |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 182 | "Instruction fetch misses from TLB"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 183 | {0x03, 0, "DCACHE_REFILL", |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 184 | "Data R/W operation that causes a refill from cache or normal cacheable" |
| 185 | "memory"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 186 | {0x04, 0, "DCACHE_ACCESS", |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 187 | "Data R/W from cache"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 188 | {0x05, 0, "DTLB_REFILL", |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 189 | "Data R/W that causes a TLB refill"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 190 | {0x06, 0, "DREAD", |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 191 | "Data read architecturally executed (note: architecturally executed = for" |
| 192 | "instructions that are unconditional or that pass the condition code)"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 193 | {0x07, 0, "DWRITE", |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 194 | "Data write architecturally executed"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 195 | {0x08, 0, "INSTR_EXECUTED", |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 196 | "All executed instructions"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 197 | {0x09, 0, "EXC_TAKEN", |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 198 | "Exception taken"}, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 199 | {0x0A, 0, "EXC_EXECUTED", |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 200 | "Exception return architecturally executed"}, |
| 201 | {0x0B, "CID_WRITE", |
| 202 | "Instruction that writes to the Context ID Register architecturally" |
| 203 | "executed"}, |
| 204 | {0x0C, "PC_WRITE", |
| 205 | "SW change of PC, architecturally executed (not by exceptions)"}, |
| 206 | {0x0D, "PC_IMM_BRANCH", |
| 207 | "Immediate branch instruction executed (taken or not)"}, |
| 208 | {0x0E, "PC_PROC_RETURN", |
| 209 | "Procedure return architecturally executed (not by exceptions)"}, |
| 210 | {0x0F, "UNALIGNED_ACCESS", |
| 211 | "Unaligned access architecturally executed"}, |
| 212 | {0x10, "PC_BRANCH_MIS_PRED", |
| 213 | "Branch mispredicted or not predicted. Counts pipeline flushes because of" |
| 214 | "misprediction"}, |
| 215 | {0x12, "PC_BRANCH_MIS_USED", |
| 216 | "Branch or change in program flow that could have been predicted"}, |
| 217 | {0x40, "WRITE_BUFFER_FULL", |
| 218 | "Any write buffer full cycle"}, |
| 219 | {0x41, "L2_STORE_MERGED", |
| 220 | "Any store that is merged in L2 cache"}, |
| 221 | {0x42, "L2_STORE_BUFF", |
| 222 | "Any bufferable store from load/store to L2 cache"}, |
| 223 | {0x43, "L2_ACCESS", |
| 224 | "Any access to L2 cache"}, |
| 225 | {0x44, "L2_CACH_MISS", |
| 226 | "Any cacheable miss in L2 cache"}, |
| 227 | {0x45, "AXI_READ_CYCLES", |
| 228 | "Number of cycles for an active AXI read"}, |
| 229 | {0x46, "AXI_WRITE_CYCLES", |
| 230 | "Number of cycles for an active AXI write"}, |
| 231 | {0x47, "MEMORY_REPLAY", |
| 232 | "Any replay event in the memory subsystem"}, |
| 233 | {0x48, "UNALIGNED_ACCESS_REPLAY", |
| 234 | "Unaligned access that causes a replay"}, |
| 235 | {0x49, "L1_DATA_MISS", |
| 236 | "L1 data cache miss as a result of the hashing algorithm"}, |
| 237 | {0x4A, "L1_INST_MISS", |
| 238 | "L1 instruction cache miss as a result of the hashing algorithm"}, |
| 239 | {0x4B, "L1_DATA_COLORING", |
| 240 | "L1 data access in which a page coloring alias occurs"}, |
| 241 | {0x4C, "L1_NEON_DATA", |
| 242 | "NEON data access that hits L1 cache"}, |
| 243 | {0x4D, "L1_NEON_CACH_DATA", |
| 244 | "NEON cacheable data access that hits L1 cache"}, |
| 245 | {0x4E, "L2_NEON", |
| 246 | "L2 access as a result of NEON memory access"}, |
| 247 | {0x4F, "L2_NEON_HIT", |
| 248 | "Any NEON hit in L2 cache"}, |
| 249 | {0x50, "L1_INST", |
| 250 | "Any L1 instruction cache access, excluding CP15 cache accesses"}, |
| 251 | {0x51, "PC_RETURN_MIS_PRED", |
| 252 | "Return stack misprediction at return stack pop" |
| 253 | "(incorrect target address)"}, |
| 254 | {0x52, "PC_BRANCH_FAILED", |
| 255 | "Branch prediction misprediction"}, |
| 256 | {0x53, "PC_BRANCH_TAKEN", |
| 257 | "Any predicted branch that is taken"}, |
| 258 | {0x54, "PC_BRANCH_EXECUTED", |
| 259 | "Any taken branch that is executed"}, |
| 260 | {0x55, "OP_EXECUTED", |
| 261 | "Number of operations executed" |
| 262 | "(in instruction or mutli-cycle instruction)"}, |
| 263 | {0x56, "CYCLES_INST_STALL", |
| 264 | "Cycles where no instruction available"}, |
| 265 | {0x57, "CYCLES_INST", |
| 266 | "Number of instructions issued in a cycle"}, |
| 267 | {0x58, "CYCLES_NEON_DATA_STALL", |
| 268 | "Number of cycles the processor waits on MRC data from NEON"}, |
| 269 | {0x59, "CYCLES_NEON_INST_STALL", |
| 270 | "Number of cycles the processor waits on NEON instruction queue or" |
| 271 | "NEON load queue"}, |
| 272 | {0x5A, "NEON_CYCLES", |
| 273 | "Number of cycles NEON and integer processors are not idle"}, |
| 274 | {0x70, "PMU0_EVENTS", |
| 275 | "Number of events from external input source PMUEXTIN[0]"}, |
| 276 | {0x71, "PMU1_EVENTS", |
| 277 | "Number of events from external input source PMUEXTIN[1]"}, |
| 278 | {0x72, "PMU_EVENTS", |
| 279 | "Number of events from both external input sources PMUEXTIN[0]" |
| 280 | "and PMUEXTIN[1]"}, |
| 281 | {0xFF, "CPU_CYCLES", |
| 282 | "Number of CPU cycles"}, |
| 283 | #endif |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 284 | }; |
| 285 | |
Ben Cheng | 1434507 | 2009-09-16 11:31:39 -0700 | [diff] [blame] | 286 | void usage() |
| 287 | { |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 288 | printf("\nopcontrol: usage:\n" |
| 289 | " --list-events list event types\n" |
| 290 | " --help this message\n" |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 291 | " --verbose show extra status\n" |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 292 | " --setup setup directories\n" |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 293 | #if defined(__i386__) || defined(__x86_64__) |
| 294 | " --quick setup and select CPU_CLK_UNHALTED:60000\n" |
| 295 | #else |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 296 | " --quick setup and select CPU_CYCLES:150000\n" |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 297 | #endif |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 298 | " --status show configuration\n" |
| 299 | " --start start data collection\n" |
| 300 | " --stop stop data collection\n" |
| 301 | " --reset clears out data from current session\n" |
| 302 | " --shutdown kill the oprofile daeman\n" |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 303 | " --callgraph=depth callgraph depth\n" |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 304 | " --event=eventspec\n" |
| 305 | " Choose an event. May be specified multiple times.\n" |
| 306 | " eventspec is in the form of name[:count], where :\n" |
| 307 | " name: event name, see \"opcontrol --list-events\"\n" |
| 308 | " count: reset counter value\n" |
| 309 | " --vmlinux=file vmlinux kernel image\n" |
| 310 | " --kernel-range=start,end\n" |
| 311 | " kernel range vma address in hexadecimal\n" |
| 312 | ); |
| 313 | } |
| 314 | |
Ben Cheng | 1434507 | 2009-09-16 11:31:39 -0700 | [diff] [blame] | 315 | void setup_session_dir() |
| 316 | { |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 317 | int fd; |
| 318 | |
| 319 | fd = open(OP_DATA_DIR, O_RDONLY); |
| 320 | if (fd != -1) { |
| 321 | system("rm -r "OP_DATA_DIR); |
| 322 | close(fd); |
| 323 | } |
| 324 | |
| 325 | if (mkdir(OP_DATA_DIR, 755)) { |
| 326 | fprintf(stderr, "Cannot create directory \"%s\": %s\n", |
| 327 | OP_DATA_DIR, strerror(errno)); |
| 328 | } |
| 329 | if (mkdir(OP_DATA_DIR"/samples", 644)) { |
| 330 | fprintf(stderr, "Cannot create directory \"%s\": %s\n", |
| 331 | OP_DATA_DIR"/samples", strerror(errno)); |
| 332 | } |
| 333 | } |
| 334 | |
Ben Cheng | 1434507 | 2009-09-16 11:31:39 -0700 | [diff] [blame] | 335 | int do_setup() |
| 336 | { |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 337 | char dir[1024]; |
| 338 | |
| 339 | setup_session_dir(); |
| 340 | |
| 341 | if (mkdir(OP_DRIVER_BASE, 644)) { |
| 342 | fprintf(stderr, "Cannot create directory "OP_DRIVER_BASE": %s\n", |
| 343 | strerror(errno)); |
| 344 | return -1; |
| 345 | } |
| 346 | if (system("mount -t oprofilefs nodev "OP_DRIVER_BASE)) { |
| 347 | return -1; |
| 348 | } |
| 349 | return 0; |
| 350 | } |
| 351 | |
| 352 | void do_list_events() |
| 353 | { |
| 354 | unsigned int i; |
| 355 | |
| 356 | printf("%-20s: %s\n", "name", "meaning"); |
| 357 | printf("----------------------------------------" |
| 358 | "--------------------------------------\n"); |
| 359 | for (i = 0; i < sizeof(event_info)/sizeof(struct event_info); i++) { |
| 360 | printf("%-20s: %s\n", event_info[i].name, event_info[i].explanation); |
| 361 | } |
| 362 | } |
| 363 | |
Ben Cheng | 1434507 | 2009-09-16 11:31:39 -0700 | [diff] [blame] | 364 | int find_event_idx_from_name(const char *name) |
| 365 | { |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 366 | unsigned int i; |
| 367 | |
| 368 | for (i = 0; i < sizeof(event_info)/sizeof(struct event_info); i++) { |
| 369 | if (!strcmp(name, event_info[i].name)) { |
| 370 | return i; |
| 371 | } |
| 372 | } |
| 373 | return -1; |
| 374 | } |
| 375 | |
Ben Cheng | 1434507 | 2009-09-16 11:31:39 -0700 | [diff] [blame] | 376 | const char * find_event_name_from_id(int id) |
| 377 | { |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 378 | unsigned int i; |
| 379 | |
| 380 | for (i = 0; i < sizeof(event_info)/sizeof(struct event_info); i++) { |
| 381 | if (event_info[i].id == id) { |
| 382 | return event_info[i].name; |
| 383 | } |
| 384 | } |
| 385 | return NULL; |
| 386 | } |
| 387 | |
Ben Cheng | 1434507 | 2009-09-16 11:31:39 -0700 | [diff] [blame] | 388 | int process_event(const char *event_spec) |
| 389 | { |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 390 | char event_name[512]; |
| 391 | char count_name[512]; |
| 392 | unsigned int i; |
Ben Cheng | 1434507 | 2009-09-16 11:31:39 -0700 | [diff] [blame] | 393 | int event_idx; |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 394 | int count_val; |
| 395 | |
| 396 | strncpy(event_name, event_spec, 512); |
| 397 | count_name[0] = 0; |
| 398 | |
| 399 | /* First, check if the name is followed by ":" */ |
| 400 | for (i = 0; i < strlen(event_name); i++) { |
| 401 | if (event_name[i] == 0) { |
| 402 | break; |
| 403 | } |
| 404 | if (event_name[i] == ':') { |
| 405 | strncpy(count_name, event_name+i+1, 512); |
| 406 | event_name[i] = 0; |
| 407 | break; |
| 408 | } |
| 409 | } |
Ben Cheng | 1434507 | 2009-09-16 11:31:39 -0700 | [diff] [blame] | 410 | event_idx = find_event_idx_from_name(event_name); |
| 411 | if (event_idx == -1) { |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 412 | fprintf(stderr, "Unknown event name: %s\n", event_name); |
| 413 | return -1; |
| 414 | } |
| 415 | |
| 416 | /* Use defualt count */ |
| 417 | if (count_name[0] == 0) { |
| 418 | count_val = min_count[0]; |
| 419 | } else { |
| 420 | count_val = atoi(count_name); |
| 421 | } |
| 422 | |
Ben Cheng | 1434507 | 2009-09-16 11:31:39 -0700 | [diff] [blame] | 423 | selected_events[num_events] = event_idx; |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 424 | selected_counts[num_events++] = count_val; |
Ben Cheng | 1434507 | 2009-09-16 11:31:39 -0700 | [diff] [blame] | 425 | verbose("event_id is %d\n", event_info[event_idx].id); |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 426 | verbose("count_val is %d\n", count_val); |
| 427 | return 0; |
| 428 | } |
| 429 | |
| 430 | int echo_dev(const char* str, int val, const char* file, int counter) |
| 431 | { |
| 432 | char fullname[512]; |
| 433 | char content[128]; |
| 434 | int fd; |
| 435 | |
| 436 | if (counter >= 0) { |
| 437 | snprintf(fullname, 512, OP_DRIVER_BASE"/%d/%s", counter, file); |
| 438 | } |
| 439 | else { |
| 440 | snprintf(fullname, 512, OP_DRIVER_BASE"/%s", file); |
| 441 | } |
| 442 | fd = open(fullname, O_WRONLY); |
| 443 | if (fd<0) { |
| 444 | fprintf(stderr, "Cannot open %s: %s\n", fullname, strerror(errno)); |
| 445 | return fd; |
| 446 | } |
| 447 | if (str == 0) { |
| 448 | sprintf(content, "%d", val); |
| 449 | } |
| 450 | else { |
| 451 | strncpy(content, str, 128); |
| 452 | } |
| 453 | verbose("Configure %s (%s)\n", fullname, content); |
| 454 | write(fd, content, strlen(content)); |
| 455 | close(fd); |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | int read_num(const char* file) |
| 460 | { |
| 461 | char buffer[256]; |
| 462 | int fd = open(file, O_RDONLY); |
| 463 | if (fd<0) return -1; |
| 464 | int rd = read(fd, buffer, sizeof(buffer)-1); |
| 465 | buffer[rd] = 0; |
| 466 | return atoi(buffer); |
| 467 | } |
| 468 | |
| 469 | void do_status() |
| 470 | { |
| 471 | int num; |
| 472 | char fullname[512]; |
| 473 | int i; |
| 474 | |
| 475 | printf("Driver directory: %s\n", OP_DRIVER_BASE); |
| 476 | printf("Session directory: %s\n", OP_DATA_DIR); |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 477 | for (i = 0; i < MAX_EVENTS; i++) { |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 478 | sprintf(fullname, OP_DRIVER_BASE"/%d/enabled", i); |
| 479 | num = read_num(fullname); |
| 480 | if (num > 0) { |
| 481 | printf("Counter %d:\n", i); |
| 482 | |
| 483 | /* event name */ |
| 484 | sprintf(fullname, OP_DRIVER_BASE"/%d/event", i); |
| 485 | num = read_num(fullname); |
| 486 | printf(" name: %s\n", find_event_name_from_id(num)); |
| 487 | |
| 488 | /* profile interval */ |
| 489 | sprintf(fullname, OP_DRIVER_BASE"/%d/count", i); |
| 490 | num = read_num(fullname); |
| 491 | printf(" count: %d\n", num); |
| 492 | } |
| 493 | else { |
| 494 | printf("Counter %d disabled\n", i); |
| 495 | } |
| 496 | } |
| 497 | |
| 498 | num = read_num(OP_DATA_DIR"/lock"); |
| 499 | if (num >= 0) { |
| 500 | int fd; |
| 501 | /* Still needs to check if this lock is left-over */ |
| 502 | sprintf(fullname, "/proc/%d", num); |
| 503 | fd = open(fullname, O_RDONLY); |
| 504 | if (fd == -1) { |
| 505 | printf("Session directory is not clean - do \"opcontrol --setup\"" |
| 506 | " before you continue\n"); |
| 507 | return; |
| 508 | } |
| 509 | else { |
| 510 | close(fd); |
| 511 | printf("oprofiled pid: %d\n", num); |
| 512 | num = read_num(OP_DRIVER_BASE"/enable"); |
| 513 | printf("profiler is%s running\n", num == 0 ? " not" : ""); |
| 514 | num = read_num(OP_DRIVER_BASE"/stats/cpu0/sample_received"); |
| 515 | printf(" %9u samples received\n", num); |
| 516 | num = read_num(OP_DRIVER_BASE"/stats/cpu0/sample_lost_overflow"); |
| 517 | printf(" %9u samples lost overflow\n", num); |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 518 | |
| 519 | #if defined(__i386__) || defined(__x86_64__) |
| 520 | /* FIXME on ARM - backtrace seems broken there */ |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 521 | num = read_num(OP_DRIVER_BASE"/stats/cpu0/backtrace_aborted"); |
| 522 | printf(" %9u backtrace aborted\n", num); |
| 523 | num = read_num(OP_DRIVER_BASE"/backtrace_depth"); |
| 524 | printf(" %9u backtrace_depth\n", num); |
| 525 | #endif |
| 526 | } |
| 527 | } |
| 528 | else { |
| 529 | printf("oprofiled is not running\n"); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | void do_reset() |
| 534 | { |
| 535 | int fd; |
| 536 | |
| 537 | fd = open(OP_DATA_DIR"/samples/current", O_RDONLY); |
| 538 | if (fd == -1) { |
| 539 | return; |
| 540 | } |
| 541 | close(fd); |
| 542 | system("rm -r "OP_DATA_DIR"/samples/current"); |
| 543 | } |
| 544 | |
| 545 | int main(int argc, char * const argv[]) |
| 546 | { |
| 547 | int option_index; |
| 548 | char command[1024]; |
| 549 | |
| 550 | /* Initialize default strings */ |
| 551 | strcpy(vmlinux, "--no-vmlinux"); |
| 552 | strcpy(kernel_range, ""); |
| 553 | |
| 554 | while (1) { |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 555 | int c = getopt_long(argc, argv, "c:e:v:r:dhVt", long_options, &option_index); |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 556 | if (c == -1) { |
| 557 | break; |
| 558 | } |
| 559 | switch (c) { |
| 560 | case 0: |
| 561 | break; |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 562 | /* --callgraph */ |
| 563 | case 'c': |
| 564 | strncpy(callgraph, optarg, sizeof(callgraph)); |
| 565 | break; |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 566 | /* --event */ |
| 567 | case 'e': |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 568 | if (num_events == MAX_EVENTS) { |
| 569 | fprintf(stderr, "More than %d events specified\n", |
| 570 | MAX_EVENTS); |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 571 | exit(1); |
| 572 | } |
| 573 | if (process_event(optarg)) { |
| 574 | exit(1); |
| 575 | } |
| 576 | break; |
| 577 | /* --vmlinux */ |
| 578 | case 'v': |
| 579 | sprintf(vmlinux, "-k %s", optarg); |
| 580 | break; |
| 581 | /* --kernel-range */ |
| 582 | case 'r': |
| 583 | sprintf(kernel_range, "-r %s", optarg); |
| 584 | break; |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 585 | case 'd': |
| 586 | /* --dump */ { |
| 587 | int pid = read_num(OP_DATA_DIR"/lock"); |
| 588 | echo_dev("1", 0, "dump", -1); |
| 589 | if (pid >= 0) { |
| 590 | sleep(1); |
| 591 | kill(pid, SIGHUP); |
| 592 | } |
| 593 | break; |
| 594 | } |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 595 | /* --shutdown */ |
| 596 | case 'h': { |
| 597 | int pid = read_num(OP_DATA_DIR"/lock"); |
| 598 | if (pid >= 0) { |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 599 | kill(pid, SIGHUP); /* Politely ask the daemon to close files */ |
| 600 | sleep(1); |
| 601 | kill(pid, SIGTERM);/* Politely ask the daemon to die */ |
| 602 | sleep(1); |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 603 | kill(pid, SIGKILL); |
| 604 | } |
| 605 | setup_session_dir(); |
| 606 | break; |
| 607 | } |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 608 | /* --verbose */ |
| 609 | case 'V': |
| 610 | verbose_print++; |
| 611 | break; |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 612 | /* --status */ |
| 613 | case 't': |
| 614 | do_status(); |
| 615 | break; |
| 616 | default: |
| 617 | usage(); |
| 618 | exit(1); |
| 619 | } |
| 620 | } |
| 621 | verbose("list_events = %d\n", list_events); |
| 622 | verbose("setup = %d\n", setup); |
| 623 | |
| 624 | if (list_events) { |
| 625 | do_list_events(); |
| 626 | } |
| 627 | |
| 628 | if (quick) { |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 629 | #if defined(__i386__) || defined(__x86_64__) |
| 630 | process_event("CPU_CLK_UNHALTED"); |
| 631 | #else |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 632 | process_event("CPU_CYCLES"); |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 633 | #endif |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 634 | setup = 1; |
| 635 | } |
| 636 | |
| 637 | if (reset) { |
| 638 | do_reset(); |
| 639 | } |
| 640 | |
| 641 | if (show_usage) { |
| 642 | usage(); |
| 643 | } |
| 644 | |
| 645 | if (setup) { |
| 646 | if (do_setup()) { |
| 647 | fprintf(stderr, "do_setup failed"); |
| 648 | exit(1); |
| 649 | } |
| 650 | } |
| 651 | |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 652 | if (strlen(callgraph)) { |
| 653 | echo_dev(callgraph, 0, "backtrace_depth", -1); |
| 654 | } |
| 655 | |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 656 | if (num_events != 0) { |
| 657 | int i; |
| 658 | |
| 659 | strcpy(command, "oprofiled --session-dir="OP_DATA_DIR); |
| 660 | |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 661 | #if defined(__i386__) || defined(__x86_64__) |
| 662 | /* Nothing */ |
| 663 | #elif !defined(WITH_ARM_V7_A) |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 664 | /* Since counter #3 can only handle CPU_CYCLES, check and shuffle the |
| 665 | * order a bit so that the maximal number of events can be profiled |
| 666 | * simultaneously |
| 667 | */ |
| 668 | if (num_events == 3) { |
| 669 | for (i = 0; i < num_events; i++) { |
| 670 | int event_idx = selected_events[i]; |
| 671 | |
| 672 | if (event_info[event_idx].id == 0xff) { |
| 673 | break; |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | /* No CPU_CYCLES is found */ |
| 678 | if (i == 3) { |
| 679 | fprintf(stderr, "You can only specify three events if one of " |
| 680 | "them is CPU_CYCLES\n"); |
| 681 | exit(1); |
| 682 | } |
| 683 | /* Swap CPU_CYCLES to counter #2 (starting from #0)*/ |
| 684 | else if (i != 2) { |
| 685 | int temp; |
| 686 | |
| 687 | temp = selected_events[2]; |
| 688 | selected_events[2] = selected_events[i]; |
| 689 | selected_events[i] = temp; |
| 690 | |
| 691 | temp = selected_counts[2]; |
| 692 | selected_counts[2] = selected_counts[i]; |
| 693 | selected_counts[i] = temp; |
| 694 | } |
| 695 | } |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 696 | #endif |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 697 | |
| 698 | |
| 699 | /* Configure the counters and enable them */ |
| 700 | for (i = 0; i < num_events; i++) { |
| 701 | int event_idx = selected_events[i]; |
| 702 | int setup_result = 0; |
| 703 | |
| 704 | if (i == 0) { |
| 705 | snprintf(command+strlen(command), 1024 - strlen(command), |
| 706 | " --events="); |
| 707 | } |
| 708 | else { |
| 709 | snprintf(command+strlen(command), 1024 - strlen(command), |
| 710 | ","); |
| 711 | } |
| 712 | /* Compose name:id:count:unit_mask:kernel:user, something like |
| 713 | * --events=CYCLES_DATA_STALL:2:0:200000:0:1:1,.... |
| 714 | */ |
| 715 | snprintf(command+strlen(command), 1024 - strlen(command), |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 716 | "%s:%d:%d:%d:%d:1:1", |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 717 | event_info[event_idx].name, |
| 718 | event_info[event_idx].id, |
| 719 | i, |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 720 | selected_counts[i], |
| 721 | event_info[event_idx].um); |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 722 | |
| 723 | setup_result |= echo_dev("1", 0, "user", i); |
| 724 | setup_result |= echo_dev("1", 0, "kernel", i); |
Bruce Beare | 751a443 | 2010-03-04 10:30:51 -0800 | [diff] [blame^] | 725 | setup_result |= echo_dev(NULL, event_info[event_idx].um, "unit_mask", i); |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 726 | setup_result |= echo_dev("1", 0, "enabled", i); |
| 727 | setup_result |= echo_dev(NULL, selected_counts[i], "count", i); |
| 728 | setup_result |= echo_dev(NULL, event_info[event_idx].id, |
| 729 | "event", i); |
| 730 | if (setup_result) { |
| 731 | fprintf(stderr, "Counter configuration failed for %s\n", |
| 732 | event_info[event_idx].name); |
| 733 | fprintf(stderr, "Did you do \"opcontrol --setup\" first?\n"); |
| 734 | exit(1); |
| 735 | } |
| 736 | } |
| 737 | |
| 738 | /* Disable the unused counters */ |
Ben Cheng | 5a4eb4e | 2009-09-14 16:00:41 -0700 | [diff] [blame] | 739 | for (i = num_events; i < MAX_EVENTS; i++) { |
The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 740 | echo_dev("0", 0, "enabled", i); |
| 741 | } |
| 742 | |
| 743 | snprintf(command+strlen(command), 1024 - strlen(command), " %s", |
| 744 | vmlinux); |
| 745 | if (kernel_range[0]) { |
| 746 | snprintf(command+strlen(command), 1024 - strlen(command), " %s", |
| 747 | kernel_range); |
| 748 | } |
| 749 | verbose("command: %s\n", command); |
| 750 | system(command); |
| 751 | } |
| 752 | |
| 753 | if (start) { |
| 754 | echo_dev("1", 0, "enable", -1); |
| 755 | } |
| 756 | |
| 757 | if (stop) { |
| 758 | echo_dev("0", 0, "enable", -1); |
| 759 | } |
| 760 | } |