├── LICENSE ├── README.md ├── benchmark.h ├── patches ├── linux.patch ├── qemu.patch └── seabios.patch └── perf-script └── qemu-perf-script.py /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # qemu-boot-time 2 | 3 | This repository collects perf-script and patches to measure the boot time 4 | of a Linux VM with QEMU. Using I/O writes, we can trace events in the firmware 5 | and Linux kernel. 6 | 7 | We extended the I/O port addresses and values defined in qboot 8 | [https://github.com/bonzini/qboot/blob/master/benchmark.h] adding new trace 9 | points to trace the kernel boot time. 10 | 11 | ## Patches 12 | 13 | ### Linux 14 | 15 | Apply the `patches/linux.patch` to your Linux kernel in order to trace kernel 16 | events 17 | 18 | ```shell 19 | git checkout -b benchmark 20 | git am qemu-boot-time/patches/linux.patch 21 | ``` 22 | 23 | ### QEMU 24 | 25 | Apply the `patches/qemu.patch` to your QEMU in order to trace optionrom 26 | events 27 | 28 | ```shell 29 | git checkout -b benchmark 30 | git am qemu-boot-time/patches/qemu.patch 31 | 32 | cd build-benchmark 33 | ../configure --target-list=x86_64-softmmu ... 34 | make 35 | ``` 36 | 37 | You can use `qemu-system-x86_64 -L qemu/build-benchmark/pc-bios/optionrom/ ...` 38 | to use the optionrom patched. 39 | 40 | ### SeaBIOS 41 | Apply the `patches/seabios.patch` to your SeaBIOS in order to trace bios 42 | events 43 | 44 | ```shell 45 | git checkout -b benchmark 46 | git am qemu-boot-time/patches/seabios.patch 47 | 48 | make clean distclean 49 | cp /path/to/qemu/roms/config.seabios-256k .config 50 | make oldnoconfig 51 | ``` 52 | 53 | You can use `qemu-system-x86_64 -bios seabios/out/bios.bin ...` to use the 54 | SeaBIOS image patched. 55 | 56 | ### qboot 57 | qboot already defines trace points, we just need to compile it defining 58 | `BENCHMARK_HACK` 59 | 60 | ```shell 61 | BIOS_CFLAGS="-DBENCHMARK_HACK=1" make 62 | ``` 63 | 64 | You can use `qemu-system-x86_64 -bios qboot/bios.bin ...` to use the qboot 65 | image. 66 | 67 | ## Prerequisites 68 | 69 | The following steps allow `perf record` to get the kvm trace events: 70 | 71 | ```shell 72 | echo 1 > /sys/kernel/debug/tracing/events/kvm/enable 73 | echo -1 > /proc/sys/kernel/perf_event_paranoid 74 | mount -o remount,mode=755 /sys/kernel/debug 75 | mount -o remount,mode=755 /sys/kernel/debug/tracing 76 | ``` 77 | 78 | ## How to use 79 | 80 | ```shell 81 | # Start perf record to collect the trace events 82 | PERF_DATA="qemu_perf.data" 83 | perf record -a -e kvm:kvm_entry -e kvm:kvm_pio -e sched:sched_process_exec \ 84 | -o $PERF_DATA & 85 | PERF_PID=$! 86 | 87 | # Wait some seconds to have perf record ready 88 | sleep 3 89 | 90 | # You can run QEMU multiple times to get also some statistics (Avg/Min/Max) 91 | qemu-system-x86_64 -machine q35,accel=kvm \ 92 | -bios seabios/out/bios.bin \ 93 | -L qemu/build-benchmark/pc-bios/optionrom/ \ 94 | -kernel linux/bzImage ... 95 | qemu-system-x86_64 -machine q35,accel=kvm \ 96 | -bios seabios/out/bios.bin \ 97 | -L qemu/build-benchmark/pc-bios/optionrom/ \ 98 | -kernel linux/bzImage ... 99 | qemu-system-x86_64 -machine q35,accel=kvm \ 100 | -bios seabios/out/bios.bin \ 101 | -L qemu/build-benchmark/pc-bios/optionrom/ \ 102 | -kernel linux/bzImage ... 103 | 104 | # Stop perf record 105 | kill $PERF_PID 106 | 107 | # Get the measurements 108 | perf script -s qemu-boot-time/perf-script/qemu-perf-script.py -i $PERF_DATA 109 | ``` 110 | 111 | ## Trace points 112 | 113 | The `benchmark.h` file contains the following trace points used in the 114 | `patches`: 115 | 116 | * QEMU 117 | * `qemu_init_end`: first kvm_entry (i.e. QEMU initialized has finished) 118 | * Firmware (SeaBIOS + optionrom or qboot) 119 | * `fw_start`: first entry of the firmware 120 | * `fw_do_boot`: after the firmware initialization (e.g. PCI setup, etc.) 121 | * `linux_start_boot`: before the jump to the Linux kernel 122 | * `linux_start_pvhboot`: before the jump to the Linux PVH kernel 123 | * Linux Kernel 124 | * `linux_start_kernel`: first entry of the Linux kernel 125 | * `linux_start_user`: before starting the init process 126 | 127 | Trace points are printed only if they are recorded, so you can only enable 128 | few of them. 129 | 130 | ### Custom trace points 131 | 132 | If you want to add new trace points, you can simply add an I/O write to 133 | `LINUX_EXIT_PORT` or `FW_EXIT_PORT` with a value (> 7) that identifies the 134 | trace point: 135 | 136 | ```c 137 | outb(10, LINUX_EXIT_PORT); 138 | ``` 139 | 140 | The `perf script` output will contain `Exit point 10` line that identifies your 141 | trace point: 142 | 143 | ```shell 144 | qemu_init_end: 143.770419 145 | fw_start: 143.964328 (+0.193909) 146 | fw_do_boot: 164.71107 (+20.746742) 147 | Exit point 10: 165.396804 (+0.685734) 148 | linux_start_kernel: 165.979486 (+0.582682) 149 | linux_start_user: 272.178335 (+106.198849) 150 | ``` 151 | 152 | ## Example of output 153 | 154 | ```shell 155 | $ perf script -s qemu-boot-time/perf-script/qemu-perf-script.py -i $PERF_DATA 156 | 157 | in trace_begin 158 | sched__sched_process_exec 1 55061.435418353 289738 qemu-system-x86 159 | kvm__kvm_entry 1 55061.466887708 289741 qemu-system-x86 160 | kvm__kvm_pio 1 55061.467070650 289741 qemu-system-x86 rw=1, port=0xf5, size=1, count=1, val=1 161 | 162 | kvm__kvm_pio 1 55061.475818073 289741 qemu-system-x86 rw=1, port=0xf5, size=1, count=1, val=4 163 | 164 | kvm__kvm_pio 1 55061.477168037 289741 qemu-system-x86 rw=1, port=0xf4, size=1, count=1, val=3 165 | 166 | kvm__kvm_pio 1 55061.558779540 289741 qemu-system-x86 rw=1, port=0xf4, size=1, count=1, val=5 167 | 168 | kvm__kvm_pio 1 55061.686849663 289741 qemu-system-x86 rw=1, port=0xf4, size=1, count=1, val=6 169 | 170 | sched__sched_process_exec 4 55067.461869075 289793 qemu-system-x86 171 | kvm__kvm_entry 4 55067.496402472 289796 qemu-system-x86 172 | kvm__kvm_pio 4 55067.496555385 289796 qemu-system-x86 rw=1, port=0xf5, size=1, count=1, val=1 173 | 174 | kvm__kvm_pio 4 55067.505067184 289796 qemu-system-x86 rw=1, port=0xf5, size=1, count=1, val=4 175 | 176 | kvm__kvm_pio 4 55067.506395502 289796 qemu-system-x86 rw=1, port=0xf4, size=1, count=1, val=3 177 | 178 | kvm__kvm_pio 4 55067.584029910 289796 qemu-system-x86 rw=1, port=0xf4, size=1, count=1, val=5 179 | 180 | kvm__kvm_pio 4 55067.704751791 289796 qemu-system-x86 rw=1, port=0xf4, size=1, count=1, val=6 181 | 182 | sched__sched_process_exec 0 55070.073823767 289827 qemu-system-x86 183 | kvm__kvm_entry 0 55070.110507211 289830 qemu-system-x86 184 | kvm__kvm_pio 0 55070.110694645 289830 qemu-system-x86 rw=1, port=0xf5, size=1, count=1, val=1 185 | 186 | kvm__kvm_pio 1 55070.120092692 289830 qemu-system-x86 rw=1, port=0xf5, size=1, count=1, val=4 187 | 188 | kvm__kvm_pio 1 55070.121437922 289830 qemu-system-x86 rw=1, port=0xf4, size=1, count=1, val=3 189 | 190 | kvm__kvm_pio 1 55070.198628779 289830 qemu-system-x86 rw=1, port=0xf4, size=1, count=1, val=5 191 | 192 | kvm__kvm_pio 1 55070.315734630 289830 qemu-system-x86 rw=1, port=0xf4, size=1, count=1, val=6 193 | 194 | in trace_end 195 | Trace qemu-system-x86 196 | 1) pid 289738 197 | qemu_init_end: 31.469355 198 | fw_start: 31.652297 (+0.182942) 199 | fw_do_boot: 40.39972 (+8.747423) 200 | linux_start_boot: 41.749684 (+1.349964) 201 | linux_start_kernel: 123.361187 (+81.611503) 202 | linux_start_user: 251.43131 (+128.070123) 203 | 2) pid 289793 204 | qemu_init_end: 34.533397 205 | fw_start: 34.68631 (+0.152913) 206 | fw_do_boot: 43.198109 (+8.511799) 207 | linux_start_boot: 44.526427 (+1.328318) 208 | linux_start_kernel: 122.160835 (+77.634408) 209 | linux_start_user: 242.882716 (+120.721881) 210 | 3) pid 289827 211 | qemu_init_end: 36.683444 212 | fw_start: 36.870878 (+0.187434) 213 | fw_do_boot: 46.268925 (+9.398047) 214 | linux_start_boot: 47.614155 (+1.34523) 215 | linux_start_kernel: 124.805012 (+77.190857) 216 | linux_start_user: 241.910863 (+117.105851) 217 | 218 | Avg 219 | qemu_init_end: 34.228732 220 | fw_start: 34.403161 (+0.174429) 221 | fw_do_boot: 43.288918 (+8.885757) 222 | linux_start_boot: 44.630088 (+1.34117) 223 | linux_start_kernel: 123.442344 (+78.812256) 224 | linux_start_user: 245.408296 (+121.965952) 225 | 226 | Min 227 | qemu_init_end: 31.469355 228 | fw_start: 31.652297 (+0.182942) 229 | fw_do_boot: 40.39972 (+8.747423) 230 | linux_start_boot: 41.749684 (+1.349964) 231 | linux_start_kernel: 122.160835 (+80.411151) 232 | linux_start_user: 241.910863 (+119.750028) 233 | 234 | Max 235 | qemu_init_end: 36.683444 236 | fw_start: 36.870878 (+0.187434) 237 | fw_do_boot: 46.268925 (+9.398047) 238 | linux_start_boot: 47.614155 (+1.34523) 239 | linux_start_kernel: 124.805012 (+77.190857) 240 | linux_start_user: 242.882716 (+118.077704) 241 | ``` 242 | -------------------------------------------------------------------------------- /benchmark.h: -------------------------------------------------------------------------------- 1 | #ifndef BENCHMARK_H 2 | #define BENCHMARK_H 3 | 4 | /* IO ports for different exit points */ 5 | #define LINUX_EXIT_PORT 0xf4 6 | #define FW_EXIT_PORT 0xf5 7 | 8 | /* Exit point values */ 9 | #define FW_START 1 10 | #define LINUX_START_FWCFG 2 11 | #define LINUX_START_BOOT 3 12 | #define LINUX_START_PVHBOOT 4 13 | #define FW_DO_BOOT 5 14 | #define LINUX_START_KERNEL 6 15 | #define LINUX_START_USER 7 16 | 17 | #endif 18 | -------------------------------------------------------------------------------- /patches/linux.patch: -------------------------------------------------------------------------------- 1 | From 07a55b06c02c33c894cf25237ed75a471f50dead Mon Sep 17 00:00:00 2001 2 | From: Stefano Garzarella 3 | Date: Fri, 30 Nov 2018 16:56:28 +0100 4 | Subject: [PATCH] boot: add debug port writes to trace boot times 5 | 6 | --- 7 | init/benchmark.h | 17 +++++++++++++++++ 8 | init/main.c | 5 +++++ 9 | 2 files changed, 22 insertions(+) 10 | create mode 100644 init/benchmark.h 11 | 12 | diff --git a/init/benchmark.h b/init/benchmark.h 13 | new file mode 100644 14 | index 000000000000..9572943f3a9d 15 | --- /dev/null 16 | +++ b/init/benchmark.h 17 | @@ -0,0 +1,17 @@ 18 | +#ifndef BENCHMARK_H 19 | +#define BENCHMARK_H 20 | + 21 | +/* IO ports for different exit points */ 22 | +#define LINUX_EXIT_PORT 0xf4 23 | +#define FW_EXIT_PORT 0xf5 24 | + 25 | +/* Exit point values */ 26 | +#define FW_START 1 27 | +#define LINUX_START_FWCFG 2 28 | +#define LINUX_START_BOOT 3 29 | +#define LINUX_START_PVHBOOT 4 30 | +#define FW_DO_BOOT 5 31 | +#define LINUX_START_KERNEL 6 32 | +#define LINUX_START_USER 7 33 | + 34 | +#endif 35 | diff --git a/init/main.c b/init/main.c 36 | index c4a45145e102..05f9cc85d07d 100644 37 | --- a/init/main.c 38 | +++ b/init/main.c 39 | @@ -10,6 +10,7 @@ 40 | */ 41 | 42 | #define DEBUG /* Enable initcall_debug */ 43 | +#include "benchmark.h" 44 | 45 | #include 46 | #include 47 | @@ -515,6 +516,8 @@ asmlinkage __visible void __init start_kernel(void) 48 | char *command_line; 49 | char *after_dashes; 50 | 51 | + outb(LINUX_START_KERNEL, LINUX_EXIT_PORT); 52 | + 53 | set_task_stack_end_magic(&init_task); 54 | smp_setup_processor_id(); 55 | debug_objects_early_init(); 56 | @@ -1008,6 +1011,8 @@ static int __ref kernel_init(void *unused) 57 | 58 | rcu_end_inkernel_boot(); 59 | 60 | + outb(LINUX_START_USER, LINUX_EXIT_PORT); 61 | + 62 | if (ramdisk_execute_command) { 63 | ret = run_init_process(ramdisk_execute_command); 64 | if (!ret) 65 | -- 66 | 2.20.1 67 | 68 | -------------------------------------------------------------------------------- /patches/qemu.patch: -------------------------------------------------------------------------------- 1 | From d7d35a8b5a6123577c808e081051448ac315d750 Mon Sep 17 00:00:00 2001 2 | From: Stefano Garzarella 3 | Date: Wed, 24 Jul 2019 16:15:07 +0200 4 | Subject: [PATCH] optionroms: add debug port writes to trace boot times 5 | 6 | --- 7 | pc-bios/optionrom/benchmark.h | 17 +++++++++++++++++ 8 | pc-bios/optionrom/linuxboot_dma.c | 3 +++ 9 | pc-bios/optionrom/pvh_main.c | 3 +++ 10 | 3 files changed, 23 insertions(+) 11 | create mode 100644 pc-bios/optionrom/benchmark.h 12 | 13 | diff --git a/pc-bios/optionrom/benchmark.h b/pc-bios/optionrom/benchmark.h 14 | new file mode 100644 15 | index 0000000000..9572943f3a 16 | --- /dev/null 17 | +++ b/pc-bios/optionrom/benchmark.h 18 | @@ -0,0 +1,17 @@ 19 | +#ifndef BENCHMARK_H 20 | +#define BENCHMARK_H 21 | + 22 | +/* IO ports for different exit points */ 23 | +#define LINUX_EXIT_PORT 0xf4 24 | +#define FW_EXIT_PORT 0xf5 25 | + 26 | +/* Exit point values */ 27 | +#define FW_START 1 28 | +#define LINUX_START_FWCFG 2 29 | +#define LINUX_START_BOOT 3 30 | +#define LINUX_START_PVHBOOT 4 31 | +#define FW_DO_BOOT 5 32 | +#define LINUX_START_KERNEL 6 33 | +#define LINUX_START_USER 7 34 | + 35 | +#endif 36 | diff --git a/pc-bios/optionrom/linuxboot_dma.c b/pc-bios/optionrom/linuxboot_dma.c 37 | index cbcf6679d9..4001dce230 100644 38 | --- a/pc-bios/optionrom/linuxboot_dma.c 39 | +++ b/pc-bios/optionrom/linuxboot_dma.c 40 | @@ -65,6 +65,7 @@ asm( 41 | #include 42 | #include "optrom.h" 43 | #include "optrom_fw_cfg.h" 44 | +#include "benchmark.h" 45 | 46 | static inline void set_es(void *addr) 47 | { 48 | @@ -189,6 +190,8 @@ void load_kernel(void) 49 | segment_addr = ((uint32_t)setup_addr >> 4); 50 | stack_addr = (uint32_t)(cmdline_addr - setup_addr - 16); 51 | 52 | + outb(LINUX_START_BOOT, LINUX_EXIT_PORT); 53 | + 54 | /* As we are changing critical registers, we cannot leave freedom to the 55 | * compiler. 56 | */ 57 | diff --git a/pc-bios/optionrom/pvh_main.c b/pc-bios/optionrom/pvh_main.c 58 | index a015e1bf22..631d6d052a 100644 59 | --- a/pc-bios/optionrom/pvh_main.c 60 | +++ b/pc-bios/optionrom/pvh_main.c 61 | @@ -26,6 +26,7 @@ asm (".code32"); /* this code will be executed in protected mode */ 62 | #include "optrom.h" 63 | #include "optrom_fw_cfg.h" 64 | #include "../../include/hw/xen/start_info.h" 65 | +#include "benchmark.h" 66 | 67 | #define RSDP_SIGNATURE 0x2052545020445352LL /* "RSD PTR " */ 68 | #define RSDP_AREA_ADDR 0x000E0000 69 | @@ -129,5 +130,7 @@ void pvh_load_kernel(void) 70 | 71 | bios_cfg_read_entry(&kernel_entry, FW_CFG_KERNEL_ENTRY, 4, fw_cfg_version); 72 | 73 | + outb(LINUX_START_PVHBOOT, LINUX_EXIT_PORT); 74 | + 75 | asm volatile("jmp *%1" : : "b"(&start_info), "c"(kernel_entry)); 76 | } 77 | -- 78 | 2.20.1 79 | 80 | -------------------------------------------------------------------------------- /patches/seabios.patch: -------------------------------------------------------------------------------- 1 | From 54b2cb3c0419afa1dc3a28b216d53fc46a6c7352 Mon Sep 17 00:00:00 2001 2 | From: Stefano Garzarella 3 | Date: Tue, 20 Nov 2018 09:51:25 +0100 4 | Subject: [PATCH] boot: add debug port writes to trace boot times 5 | 6 | --- 7 | src/Kconfig | 7 +++++++ 8 | src/benchmark.h | 16 ++++++++++++++++ 9 | src/boot.c | 5 +++++ 10 | src/post.c | 5 +++++ 11 | 4 files changed, 33 insertions(+) 12 | create mode 100644 src/benchmark.h 13 | 14 | diff --git a/src/Kconfig b/src/Kconfig 15 | index 55a87cb..daf8222 100644 16 | --- a/src/Kconfig 17 | +++ b/src/Kconfig 18 | @@ -566,6 +566,13 @@ menu "Debugging" 19 | information by outputing strings in a special port present in the 20 | IO space. 21 | 22 | + config DEBUG_BENCHMARK 23 | + depends on QEMU_HARDWARE 24 | + bool "benchmark IO port debugging" 25 | + default y 26 | + help 27 | + Benchmark debug 28 | + 29 | config DEBUG_COREBOOT 30 | depends on COREBOOT && DEBUG_LEVEL != 0 31 | bool "coreboot cbmem debug logging" 32 | diff --git a/src/benchmark.h b/src/benchmark.h 33 | new file mode 100644 34 | index 0000000..c785e1d 35 | --- /dev/null 36 | +++ b/src/benchmark.h 37 | @@ -0,0 +1,17 @@ 38 | +#ifndef BENCHMARK_H 39 | +#define BENCHMARK_H 40 | + 41 | +/* IO ports for different exit points */ 42 | +#define LINUX_EXIT_PORT 0xf4 43 | +#define FW_EXIT_PORT 0xf5 44 | + 45 | +/* Exit point values */ 46 | +#define FW_START 1 47 | +#define LINUX_START_FWCFG 2 48 | +#define LINUX_START_BOOT 3 49 | +#define LINUX_START_PVHBOOT 4 50 | +#define FW_DO_BOOT 5 51 | +#define LINUX_START_KERNEL 6 52 | +#define LINUX_START_USER 7 53 | + 54 | +#endif 55 | diff --git a/src/boot.c b/src/boot.c 56 | index 9f82f3c..c6d8cc1 100644 57 | --- a/src/boot.c 58 | +++ b/src/boot.c 59 | @@ -21,6 +21,7 @@ 60 | #include "string.h" // memset 61 | #include "util.h" // irqtimer_calc 62 | #include "tcgbios.h" // tpm_* 63 | +#include "benchmark.h" 64 | 65 | 66 | /**************************************************************** 67 | @@ -739,6 +740,10 @@ do_boot(int seq_nr) 68 | if (seq_nr >= BEVCount) 69 | boot_fail(); 70 | 71 | +#if CONFIG_DEBUG_BENCHMARK 72 | + outb(FW_DO_BOOT, FW_EXIT_PORT); 73 | +#endif 74 | + 75 | // Boot the given BEV type. 76 | struct bev_s *ie = &BEV[seq_nr]; 77 | switch (ie->type) { 78 | diff --git a/src/post.c b/src/post.c 79 | index f93106a..7636d41 100644 80 | --- a/src/post.c 81 | +++ b/src/post.c 82 | @@ -23,6 +23,7 @@ 83 | #include "string.h" // memset 84 | #include "util.h" // kbd_init 85 | #include "tcgbios.h" // tpm_* 86 | +#include "benchmark.h" 87 | 88 | 89 | /**************************************************************** 90 | @@ -323,6 +324,10 @@ handle_post(void) 91 | if (!CONFIG_QEMU && !CONFIG_COREBOOT) 92 | return; 93 | 94 | +#if CONFIG_DEBUG_BENCHMARK 95 | + outb(FW_START, FW_EXIT_PORT); 96 | +#endif 97 | + 98 | serial_debug_preinit(); 99 | debug_banner(); 100 | 101 | -- 102 | 2.20.1 103 | 104 | -------------------------------------------------------------------------------- /perf-script/qemu-perf-script.py: -------------------------------------------------------------------------------- 1 | # perf script event handlers, generated by perf script -g python 2 | # Licensed under the terms of the GNU GPL License version 2 3 | 4 | # The common_* event handler fields are the most useful fields common to 5 | # all events. They don't necessarily correspond to the 'common_*' fields 6 | # in the format files. Those fields not available as handler params can 7 | # be retrieved using Python functions of the form common_*(context). 8 | # See the perf-script-python Documentation for the list of available functions. 9 | 10 | from __future__ import print_function 11 | 12 | import os 13 | import sys 14 | import collections 15 | 16 | sys.path.append(os.environ['PERF_EXEC_PATH'] + \ 17 | '/scripts/python/Perf-Trace-Util/lib/Perf/Trace') 18 | 19 | from perf_trace_context import * 20 | from Core import * 21 | from Util import * 22 | 23 | 24 | class QemuTrace: 25 | APP_NAME = "qemu-system-x86" 26 | # IO ports for different exit points 27 | LINUX_EXIT_PORT = 0xf4 28 | FW_EXIT_PORT = 0xf5 29 | # Exit point values 30 | EXIT_POINTS = { 1 : 'fw_start', 31 | 2 : 'linux_start_fwcfg', 32 | 3 : 'linux_start_boot', 33 | 4 : 'linux_start_pvhboot', 34 | 5 : 'fw_do_boot', 35 | 6 : 'linux_start_kernel', 36 | 7 : 'linux_start_user'} 37 | 38 | def __init__(self): 39 | self.start = 0 40 | self.qemu_init_end = 0 41 | self.probes = [] 42 | 43 | def print(self, div = 1): 44 | print(" qemu_init_end: %f" % \ 45 | ((self.qemu_init_end - float(self.start))/div)) 46 | 47 | pre_ep = 0 48 | pre_ts = self.qemu_init_end 49 | for ep, ts in self.probes: 50 | if ep == pre_ep: 51 | continue 52 | if ep in QemuTrace.EXIT_POINTS: 53 | ep_name = QemuTrace.EXIT_POINTS[ep] 54 | else: 55 | ep_name = "Exit point " + str(ep) 56 | 57 | print(" {}: {} (+{})".format(ep_name, (ts - float(self.start))/div, (ts - float(pre_ts))/div)) 58 | pre_ts = ts 59 | pre_ep = ep 60 | 61 | @staticmethod 62 | def stats(pids, traces, div): 63 | avgQT = QemuTrace() 64 | minQT = QemuTrace() 65 | maxQT = QemuTrace() 66 | 67 | count = 0 68 | 69 | for pid in pids: 70 | count += 1 71 | 72 | print("%d) pid %d" % (count, pid)) 73 | traces[pid].print(div) 74 | 75 | qit = traces[pid].qemu_init_end - traces[pid].start 76 | avgQT.qemu_init_end += qit 77 | maxQT.qemu_init_end = max(maxQT.qemu_init_end, qit) 78 | 79 | if (count == 1): 80 | minQT.qemu_init_end = qit 81 | else: 82 | minQT.qemu_init_end = min(minQT.qemu_init_end, qit) 83 | 84 | i = 0 85 | for ep, ts in traces[pid].probes: 86 | 87 | rel_ts = ts - traces[pid].start 88 | 89 | if (count == 1): 90 | avgQT.probes.append((ep, rel_ts)) 91 | minQT.probes.append((ep, rel_ts)) 92 | maxQT.probes.append((ep, 0)) 93 | else: 94 | avgQT.probes[i] = (ep, avgQT.probes[i][1] + rel_ts) 95 | minQT.probes[i] = (ep, min(minQT.probes[i][1], rel_ts)) 96 | maxQT.probes[i] = (ep, max(maxQT.probes[i][1], rel_ts)) 97 | 98 | i+=1 99 | 100 | 101 | if count > 1: 102 | avgQT.qemu_init_end /= count 103 | 104 | i = 0 105 | for ep, ts in avgQT.probes: 106 | avgQT.probes[i] = (ep, avgQT.probes[i][1] / count) 107 | i+=1 108 | 109 | 110 | print("\nAvg") 111 | avgQT.print(div) 112 | 113 | print("\nMin") 114 | minQT.print(div) 115 | 116 | print("\nMax") 117 | maxQT.print(div) 118 | 119 | class Events: 120 | 121 | def __init__(self, ClassTrace): 122 | self.ClassTrace = ClassTrace 123 | self.app_name = ClassTrace.APP_NAME 124 | self.pids = [] 125 | self.traces = autodict() 126 | 127 | def stats(self, div): 128 | self.ClassTrace.stats(self.pids, self.traces, div) 129 | 130 | 131 | events = Events(QemuTrace) 132 | 133 | 134 | def trace_begin(): 135 | print("in trace_begin") 136 | 137 | 138 | def trace_end(): 139 | print("in trace_end") 140 | print("Trace %s" % (events.app_name)) 141 | events.stats(1000000) 142 | 143 | 144 | def sched__sched_process_exec(event_name, context, common_cpu, 145 | common_secs, common_nsecs, common_pid, common_comm, 146 | common_callchain, filename, pid, old_pid, perf_sample_dict): 147 | 148 | if (events.app_name != common_comm): 149 | return 150 | 151 | events.traces[pid] = QemuTrace() 152 | events.traces[pid].start = perf_sample_dict["sample"]["time"] 153 | events.pids.append(pid) 154 | 155 | 156 | print_header(event_name, common_cpu, common_secs, common_nsecs, 157 | common_pid, common_comm) 158 | print() 159 | 160 | 161 | def kvm__kvm_pio(event_name, context, common_cpu, 162 | common_secs, common_nsecs, common_pid, common_comm, 163 | common_callchain, rw, port, size, count, 164 | val, perf_sample_dict): 165 | 166 | if (events.app_name != common_comm): 167 | return 168 | 169 | ts = perf_sample_dict["sample"]["time"] 170 | pid = perf_sample_dict["sample"]["pid"] 171 | 172 | if (port != QemuTrace.FW_EXIT_PORT and port != QemuTrace.LINUX_EXIT_PORT): 173 | return 174 | 175 | events.traces[pid].probes.append((val, ts)) 176 | print_header(event_name, common_cpu, common_secs, common_nsecs, 177 | common_pid, common_comm) 178 | 179 | 180 | print("rw=%u, port=0x%x, size=%u, count=%u, val=%u" % \ 181 | (rw, port, size, count, val)) 182 | print() 183 | 184 | 185 | def kvm__kvm_entry(event_name, context, common_cpu, 186 | common_secs, common_nsecs, common_pid, common_comm, 187 | common_callchain, vcpu_id, perf_sample_dict): 188 | 189 | if (events.app_name != common_comm): 190 | return 191 | 192 | ts = perf_sample_dict["sample"]["time"] 193 | pid = perf_sample_dict["sample"]["pid"] 194 | 195 | if (events.traces[pid].qemu_init_end != 0): 196 | return 197 | 198 | events.traces[pid].qemu_init_end = ts 199 | 200 | 201 | print_header(event_name, common_cpu, common_secs, common_nsecs, 202 | common_pid, common_comm) 203 | print() 204 | 205 | 206 | def trace_unhandled(event_name, context, event_fields_dict, perf_sample_dict): 207 | pass 208 | 209 | 210 | def print_header(event_name, cpu, secs, nsecs, pid, comm): 211 | print("%-20s %5u %05u.%09u %8u %-20s " % \ 212 | (event_name, cpu, secs, nsecs, pid, comm), end="") 213 | 214 | 215 | def get_dict_as_string(a_dict, delimiter=' '): 216 | return delimiter.join(['%s=%s'%(k,str(v))for k,v in sorted(a_dict.items())]) 217 | --------------------------------------------------------------------------------