mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-22 17:55:57 +01:00
Move all build and run output to out/$arch/
Most of it was present inside buildroot/output.* and the rest scattered
on top level.
This came about for the n-th time when we were reviewing QEMU trace file
locations.
On one hand, it would be cool to have per arch traces.
This made buildroot/output.${arch}~/ a natural choice.
But on the other, those traces have nothing to do with Buildroot,
and could potentially interfere with Buildroot build files.
It also feels nicer to have buildroot/ pristine source code only,
and keep all output under a single directory out/
This commit is contained in:
Ciro Santilli
6
.gitignore
vendored
6
.gitignore
vendored
@@ -1,5 +1,4 @@
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# Extensions and prefixes.
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*.html
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*.log
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*.tmp
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*~
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@@ -7,8 +6,5 @@
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gitignore*
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# Specific files.
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/out
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/9p
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/README.html
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# GEM5
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/m5out
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160
README.adoc
160
README.adoc
@@ -127,13 +127,13 @@ git clean -xdf .
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To only nuke one architecture, do:
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....
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rm -rf buildroot/output.x86_64~
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rm -rf out/x86_64/buildroot
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....
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Only nuke one one package:
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....
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rm -rf buildroot/output.x86_64~/build/host-qemu-custom
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rm -rf out/x86_64/buildroot/build/host-qemu-custom
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./build
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....
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@@ -335,7 +335,7 @@ So for example when you run:
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Stdout shows a line with the full command of type:
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....
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./buildroot/output.arm~/host/usr/bin/qemu-system-arm -m 128M -monitor telnet::45454,server,nowait -netdev user,hostfwd=tcp::45455-:45455,id=net0 -smp 1 -M versatilepb -append 'root=/dev/sda nokaslr norandmaps printk.devkmsg=on printk.time=y' -device rtl8139,netdev=net0 -dtb ./buildroot/output.arm~/images/versatile-pb.dtb -kernel ./buildroot/output.arm~/images/zImage -serial stdio -drive file='./buildroot/output.arm~/images/rootfs.ext2.qcow2,if=scsi,format=qcow2'
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./out/arm/buildroot/host/usr/bin/qemu-system-arm -m 128M -monitor telnet::45454,server,nowait -netdev user,hostfwd=tcp::45455-:45455,id=net0 -smp 1 -M versatilepb -append 'root=/dev/sda nokaslr norandmaps printk.devkmsg=on printk.time=y' -device rtl8139,netdev=net0 -dtb ./out/arm/buildroot/images/versatile-pb.dtb -kernel ./out/arm/buildroot/images/zImage -serial stdio -drive file='./out/arm/buildroot/images/rootfs.ext2.qcow2,if=scsi,format=qcow2'
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....
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This line is also saved to a file for convenience:
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@@ -516,7 +516,7 @@ Shell 2:
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In GDB, hit `Ctrl + C`, and note how it says:
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....
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scanning for modules in /home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64~/build/linux-custom
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scanning for modules in /home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64/buildroot/build/linux-custom
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loading @0xffffffffc0000000: ../kernel_module-1.0//timer.ko
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....
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@@ -851,13 +851,13 @@ But TODO I don't think you can see where you are in the kernel source code and l
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Step debug userland processes to understand how they are talking to the kernel.
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Then in guest:
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Guest:
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....
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/gdbserver.sh /myinsmod.out /hello.ko
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....
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In host:
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Host:
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....
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./rungdbserver kernel_module-1.0/user/myinsmod.out
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@@ -866,12 +866,12 @@ In host:
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You can find the executable with:
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....
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find buildroot/output.x86_64~/build -name myinsmod.out
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find out/x86_64/buildroot/build -name myinsmod.out
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....
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TODO: automate the path finding:
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* using the executable from under `buildroot/output.x86_64~/target` would be easier as the path is the same as in guest, but unfortunately those executables are stripped to make the guest smaller. `BR2_STRIP_none=y` should disable stripping, but make the image way larger.
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* using the executable from under `out/x86_64/buildroot/target` would be easier as the path is the same as in guest, but unfortunately those executables are stripped to make the guest smaller. `BR2_STRIP_none=y` should disable stripping, but make the image way larger.
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* `outputx86_64~/staging/` would be even better than `target/` as the docs say that this directory contains binaries before they were stripped. However, only a few binaries are pre-installed there by default, and it seems to be a manual per package thing.
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+
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E.g. `pciutils` has for `lspci`:
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@@ -1158,19 +1158,19 @@ Finally, the docs are lying, arguments with dots that come after `-` are still t
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We disable networking by default because it starts an userland process, and we want to keep the number of userland processes to a minimum to make the system more understandable.
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To enable it run:
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Enable:
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....
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/sbin/ifup -a
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....
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To disable it, run:
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Disable:
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....
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/sbin/ifdown -a
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....
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To test it out, try:
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Test:
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....
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wget google.com
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@@ -1314,7 +1314,7 @@ This can be solved by increasing the memory with:
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The main ingredients to get initrd working are:
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* `BR2_TARGET_ROOTFS_CPIO=y`: make Buildroot generate `output/images/rootfs.cpio` in addition to the other images.
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* `BR2_TARGET_ROOTFS_CPIO=y`: make Buildroot generate `images/rootfs.cpio` in addition to the other images.
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+
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It is also possible to compress that image with other options.
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* `qemu -initrd`: make QEMU put the image into memory and tell the kernel about it.
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@@ -1361,7 +1361,7 @@ The `-l` (ell) should only be used the first time you move to / from a different
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It is interesting to see how this increases the size of the kernel image if you do a:
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....
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ls -lh buildroot/output.x86_64~/images/bzImage
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ls -lh out/x86_64/buildroot/images/bzImage
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....
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before and after using initramfs, since the `.cpio` is now glued to the kernel image.
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@@ -1404,7 +1404,7 @@ Build configuration can be observed in guest with:
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or on host:
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....
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cat buildroot/output.*~/build/linux-custom/.config
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cat out/*/buildroot/build/linux-custom/.config
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....
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=== Find the kernel version
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@@ -1614,10 +1614,10 @@ instruction count firmware: 20708
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gem5:
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....
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./run -a arm -g -E 'm5 exit'
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./run -a aarch64 -g -E 'm5 exit'
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# Or:
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# ./run -a arm -g -E 'm5 exit' -- --cpu-type=HPI --caches
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grep sim_insts m5out/stats.txt
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grep sim_insts out/aarch64/gem5/m5out/stats.txt
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....
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Notes:
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@@ -1627,7 +1627,7 @@ Notes:
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It can be found from:
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+
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....
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readelf -e buildroot/output.x86_64~/build/linux-*/vmlinux | grep Entry
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readelf -e out/x86_64/buildroot/build/linux-*/vmlinux | grep Entry
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....
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+
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TODO confirm further. If I try to break there with:
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@@ -2014,7 +2014,7 @@ This has nothing to do with the Linux kernel, but it is cool:
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....
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sudo apt-get install qemu-user
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./build -a arm
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cd buildroot/output.arm~/target
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cd out/arm/buildroot/target
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qemu-arm -L . bin/ls
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....
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@@ -2088,7 +2088,7 @@ To do it for the Linux kernel boot we have a helper:
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You can then inspect the instructions with:
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....
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less ./buildroot/output.x86_64~/lkmc/trace.txt
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less ./out/x86_64/qemu/trace.txt
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....
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This functionality relies on the following setup:
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@@ -2121,7 +2121,7 @@ We can further use Binutils' `addr2line` to get the line that corresponds to eac
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....
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./trace-boot -a x86_64
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./trace2line -a x86_64
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less ./buildroot/output.x86_64~/lkmc/trace-lines.txt
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less ./out/x86_64/qemu/trace-lines.txt
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....
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The format is as follows:
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@@ -2308,7 +2308,7 @@ Now you can play a fun little game with your friends:
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To find out why your program is slow, a good first step is to have a look at the statistics for the run:
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....
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cat m5out/stats.txt
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cat out/aarch64/gem5/m5out/stats.txt
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....
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Whenever we run `m5 dumpstats` or `m5 exit`, a section with the following format is added to that file:
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@@ -2463,7 +2463,7 @@ m5 resetstats && sleep 10 && m5 dumpstats
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and then:
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....
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grep numCycles m5out/stats.txt
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grep numCycles out/aarch64/gem5/m5out/stats.txt
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....
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TODO: why doesn't this exist:
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@@ -2585,17 +2585,17 @@ Running a benchmark of a different size requires a rebuild with:
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....
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./build \
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-a arm \
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-c 'BR2_PACKAGE_PARSEC_BENCHMARK_INPUT_SIZE="simsmall"' \
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-c BR2_TARGET_ROOTFS_EXT2_SIZE="500M" \
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-g \
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-b br2_parsec \
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-c 'BR2_PACKAGE_PARSEC_BENCHMARK_INPUT_SIZE="simsmall"' \
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-g \
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-- parsec-benchmark-reconfigure \
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;
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....
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and then try running the benchmarks as before.
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The rebuild is required because some of the input sizes
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Large input sizes will likely require tweaking <<br2_target_rootfs_ext2_size>>.
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The rebuild is required because we unpack input files on the host.
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Separating input sizes also allows to create smaller images when only running the smaller benchmarks.
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@@ -2620,7 +2620,7 @@ Note that dots cannot be used as in `1.5G`, so just use Megs as in `1500M` inste
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Unfortunately, TODO we don't have a perfect way to find the right value for `BR2_TARGET_ROOTFS_EXT2_SIZE`. One good heuristic is:
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....
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du -hsx buildroot/output.arm-gem5~/target/parsec
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du -hsx out/arm-gem5/buildroot/target/parsec
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....
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https://stackoverflow.com/questions/49211241/is-there-a-way-to-automatically-detect-the-minimum-required-br2-target-rootfs-ex
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@@ -2693,10 +2693,10 @@ If you want to remove PARSEC later, Buildroot doesn't provide an automated packa
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....
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rm -rf \
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./buildroot/dl/parsec-* \
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./buildroot/output.arm-gem5~/build/parsec-* \
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./buildroot/output.arm-gem5~/build/packages-file-list.txt \
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./buildroot/output.arm-gem5~/images/rootfs.* \
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./buildroot/output.arm-gem5~/target/parsec-* \
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./out/arm-gem5/buildroot/build/parsec-* \
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./out/arm-gem5/buildroot/build/packages-file-list.txt \
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./out/arm-gem5/buildroot/images/rootfs.* \
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./out/arm-gem5/buildroot/target/parsec-* \
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;
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./build -a arm -g
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....
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@@ -2744,7 +2744,7 @@ This is due mainly to the `pkg-generic` `GLOBAL_INSTRUMENTATION_HOOKS` sanitatio
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The pause is followed by:
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....
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buildroot/output.arm~/build/parsec-benchmark-custom/.stamp_target_installed
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out/arm/buildroot/build/parsec-benchmark-custom/.stamp_target_installed
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....
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so which shows that the whole delay is inside our install itself.
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@@ -2824,7 +2824,7 @@ warn: Couldn't read data from debugger.
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I've also tried the fix at: https://stackoverflow.com/questions/27411621/remote-g-packet-reply-is-too-long-aarch64-arm64 by adding to the link:rungdb[] script:
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||||
|
||||
....
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-ex 'set tdesc filename buildroot/output.aarch64~/build/gdb-7.11.1/./gdb/features/aarch64.xml'
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-ex 'set tdesc filename out/aarch64/buildroot/build/gdb-7.11.1/./gdb/features/aarch64.xml'
|
||||
....
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but it did not help.
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@@ -2924,7 +2924,7 @@ This makes it easier to remember which checkpoint is which, especially since the
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|
||||
Internals:
|
||||
|
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* the checkpoints are stored under `m5out/cpts/$arch/cpt.$todo_whatisthis`
|
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* the checkpoints are stored under `out/$arch/gem5/m5out/cpt.$todo_whatisthis`
|
||||
* <<m5>> is a guest utility present inside the gem5 tree which we cross-compiled and installed into the guest
|
||||
|
||||
==== gem5 restore checkpoint with a different CPU
|
||||
@@ -2998,9 +2998,9 @@ TODO Now we just need to network them up to have some more fun! See dist-gem5: h
|
||||
|
||||
We would like to be able to run both gem5 and QEMU with the same minimal kernel build to:
|
||||
|
||||
* do a single Buildroot build for both. Otherwise, we have to create two full `buildroot/output*` directories, which takes up a lot of time.
|
||||
* do a single Buildroot build for both. Otherwise, we have to create two full `out/.*/buildroot/` directories, which takes up a lot of time.
|
||||
+
|
||||
Alternatively, we could try to be brave and switch between two kernel builds inside `buildroot/output.*/`, but that would be too hackish.
|
||||
Alternatively, we could try to be brave and switch between two kernel builds inside `out/.*/buildroot/`, but that would be too hackish.
|
||||
* be able to compare behaviour between QEMU and gem5 when one is doing something weird.
|
||||
+
|
||||
Note however that there are also variations which need to be controlled, e.g. kernel command line, DTB and QEMU's non-determinism.
|
||||
@@ -3023,7 +3023,7 @@ but this strategy failed for the other archs for some reason.
|
||||
|
||||
===== QEMU with gem5 kernel configuration ARM
|
||||
|
||||
To test this, hack up `run` to use the `buildroot/output.arm-gem5~` directory, and then run:
|
||||
To test this, hack up `run` to use the `out/arm-gem5/buildroot` directory, and then run:
|
||||
|
||||
....
|
||||
./run -a arm
|
||||
@@ -3084,27 +3084,27 @@ Boot fails with:
|
||||
|
||||
....
|
||||
--- BEGIN LIBC BACKTRACE ---
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z15print_backtracev+0x29)[0x557f6290bc89]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z12abortHandleri+0x4a)[0x557f6291f88a]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z15print_backtracev+0x29)[0x557f6290bc89]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z12abortHandleri+0x4a)[0x557f6291f88a]
|
||||
/lib/x86_64-linux-gnu/libpthread.so.0(+0x13150)[0x7fbb3bd13150]
|
||||
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7fbb3a3450bb]
|
||||
/lib/x86_64-linux-gnu/libc.so.6(abort+0x16d)[0x7fbb3a346f5d]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x4110bf)[0x557f626570bf]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6X86ISA8PS2Mouse11processDataEh+0x12a)[0x557f6264940a]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6X86ISA5I80425writeEP6Packet+0xa2c)[0x557f6264bb5c]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN7PioPort10recvAtomicEP6Packet+0x6e)[0x557f6311eace]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15NoncoherentXBar10recvAtomicEP6Packets+0x279)[0x557f62b63969]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6Bridge15BridgeSlavePort10recvAtomicEP6Packet+0x36)[0x557f62b3a7f6]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN12CoherentXBar10recvAtomicEP6Packets+0x57b)[0x557f62b4724b]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15AtomicSimpleCPU8writeMemEPhjm5FlagsImEPm+0x49d)[0x557f627fd12d]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN17SimpleExecContext8writeMemEPhjm5FlagsImEPm+0x29)[0x557f6280b439]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZNK10X86ISAInst2St7executeEP11ExecContextPN5Trace10InstRecordE+0x29b)[0x557f6301712b]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15AtomicSimpleCPU4tickEv+0x3b4)[0x557f627fc054]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN10EventQueue10serviceOneEv+0xd9)[0x557f62912f79]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z9doSimLoopP10EventQueue+0x58)[0x557f6292cb88]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z8simulatem+0xc1a)[0x557f6292db7a]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x8a9c7b)[0x557f62aefc7b]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x72d5ab)[0x557f629735ab]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x4110bf)[0x557f626570bf]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6X86ISA8PS2Mouse11processDataEh+0x12a)[0x557f6264940a]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6X86ISA5I80425writeEP6Packet+0xa2c)[0x557f6264bb5c]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN7PioPort10recvAtomicEP6Packet+0x6e)[0x557f6311eace]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15NoncoherentXBar10recvAtomicEP6Packets+0x279)[0x557f62b63969]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6Bridge15BridgeSlavePort10recvAtomicEP6Packet+0x36)[0x557f62b3a7f6]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN12CoherentXBar10recvAtomicEP6Packets+0x57b)[0x557f62b4724b]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15AtomicSimpleCPU8writeMemEPhjm5FlagsImEPm+0x49d)[0x557f627fd12d]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN17SimpleExecContext8writeMemEPhjm5FlagsImEPm+0x29)[0x557f6280b439]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZNK10X86ISAInst2St7executeEP11ExecContextPN5Trace10InstRecordE+0x29b)[0x557f6301712b]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15AtomicSimpleCPU4tickEv+0x3b4)[0x557f627fc054]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN10EventQueue10serviceOneEv+0xd9)[0x557f62912f79]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z9doSimLoopP10EventQueue+0x58)[0x557f6292cb88]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z8simulatem+0xc1a)[0x557f6292db7a]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x8a9c7b)[0x557f62aefc7b]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x72d5ab)[0x557f629735ab]
|
||||
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6e54)[0x7fbb3bfd37e4]
|
||||
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7d8)[0x7fbb3c0fdb88]
|
||||
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5bf0)[0x7fbb3bfd2580]
|
||||
@@ -3117,7 +3117,7 @@ Boot fails with:
|
||||
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5bf0)[0x7fbb3bfd2580]
|
||||
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7d8)[0x7fbb3c0fdb88]
|
||||
--- END LIBC BACKTRACE ---
|
||||
./run: line 249: 21991 Aborted (core dumped) M5_PATH='/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/system' '/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt' '/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/configs/example/fs.py' --checkpoint-dir='./m5out/cpts/x86_64' --disk-image='/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/images/rootfs.ext2' --mem-size=256MB --num-cpus='1' --kernel=/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64~/build/linux-custom/vmlinux --command-line='earlyprintk=ttyS0 console=ttyS0 lpj=7999923 root=/dev/hda nokaslr norandmaps printk.devkmsg=on printk.time=y init=/eval_base64.sh - lkmc_eval="bTUgZXhpdA=="'
|
||||
./run: line 249: 21991 Aborted (core dumped) M5_PATH='/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/system' '/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt' '/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/configs/example/fs.py' --checkpoint-dir='./m5out/cpts/x86_64' --disk-image='/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/images/rootfs.ext2' --mem-size=256MB --num-cpus='1' --kernel=/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64/buildroot/build/linux-custom/vmlinux --command-line='earlyprintk=ttyS0 console=ttyS0 lpj=7999923 root=/dev/hda nokaslr norandmaps printk.devkmsg=on printk.time=y init=/eval_base64.sh - lkmc_eval="bTUgZXhpdA=="'
|
||||
....
|
||||
|
||||
dmesg stops at:
|
||||
@@ -3144,27 +3144,27 @@ If I append `savedefconfig` to our `kernel_config_fragment`:
|
||||
|
||||
....
|
||||
--- BEGIN LIBC BACKTRACE ---
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z15print_backtracev+0x29)[0x559636f44c89]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z12abortHandleri+0x4a)[0x559636f5888a]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z15print_backtracev+0x29)[0x559636f44c89]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z12abortHandleri+0x4a)[0x559636f5888a]
|
||||
/lib/x86_64-linux-gnu/libpthread.so.0(+0x13150)[0x7f855f8f3150]
|
||||
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7f855df250bb]
|
||||
/lib/x86_64-linux-gnu/libc.so.6(abort+0x16d)[0x7f855df26f5d]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x4110bf)[0x559636c900bf]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6X86ISA8PS2Mouse11processDataEh+0x12a)[0x559636c8240a]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6X86ISA5I80425writeEP6Packet+0xa2c)[0x559636c84b5c]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN7PioPort10recvAtomicEP6Packet+0x6e)[0x559637757ace]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15NoncoherentXBar10recvAtomicEP6Packets+0x279)[0x55963719c969]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6Bridge15BridgeSlavePort10recvAtomicEP6Packet+0x36)[0x5596371737f6]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN12CoherentXBar10recvAtomicEP6Packets+0x57b)[0x55963718024b]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15AtomicSimpleCPU8writeMemEPhjm5FlagsImEPm+0x49d)[0x559636e3612d]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN17SimpleExecContext8writeMemEPhjm5FlagsImEPm+0x29)[0x559636e44439]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZNK10X86ISAInst2St7executeEP11ExecContextPN5Trace10InstRecordE+0x29b)[0x55963765012b]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15AtomicSimpleCPU4tickEv+0x3b4)[0x559636e35054]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN10EventQueue10serviceOneEv+0xd9)[0x559636f4bf79]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z9doSimLoopP10EventQueue+0x58)[0x559636f65b88]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z8simulatem+0xc1a)[0x559636f66b7a]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x8a9c7b)[0x559637128c7b]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output.x86_64-gem5~/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x72d5ab)[0x559636fac5ab]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x4110bf)[0x559636c900bf]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6X86ISA8PS2Mouse11processDataEh+0x12a)[0x559636c8240a]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6X86ISA5I80425writeEP6Packet+0xa2c)[0x559636c84b5c]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN7PioPort10recvAtomicEP6Packet+0x6e)[0x559637757ace]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15NoncoherentXBar10recvAtomicEP6Packets+0x279)[0x55963719c969]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN6Bridge15BridgeSlavePort10recvAtomicEP6Packet+0x36)[0x5596371737f6]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN12CoherentXBar10recvAtomicEP6Packets+0x57b)[0x55963718024b]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15AtomicSimpleCPU8writeMemEPhjm5FlagsImEPm+0x49d)[0x559636e3612d]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN17SimpleExecContext8writeMemEPhjm5FlagsImEPm+0x29)[0x559636e44439]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZNK10X86ISAInst2St7executeEP11ExecContextPN5Trace10InstRecordE+0x29b)[0x55963765012b]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN15AtomicSimpleCPU4tickEv+0x3b4)[0x559636e35054]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_ZN10EventQueue10serviceOneEv+0xd9)[0x559636f4bf79]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z9doSimLoopP10EventQueue+0x58)[0x559636f65b88]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(_Z8simulatem+0xc1a)[0x559636f66b7a]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x8a9c7b)[0x559637128c7b]
|
||||
/home/ciro/bak/git/linux-kernel-module-cheat/out/x86_64-gem5/buildroot/build/gem5-1.0/gem5/build/X86/gem5.opt(+0x72d5ab)[0x559636fac5ab]
|
||||
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6e54)[0x7f855fbb37e4]
|
||||
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x7d8)[0x7f855fcddb88]
|
||||
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5bf0)[0x7f855fbb2580]
|
||||
@@ -3231,7 +3231,7 @@ m5 writefile myfileguest myfilehost
|
||||
Host:
|
||||
|
||||
....
|
||||
cat m5out/myfilehost
|
||||
cat out/aarch64/gem5/m5out/myfilehost
|
||||
....
|
||||
|
||||
Does not work for subdirectories, gem5 crashes:
|
||||
@@ -3247,7 +3247,7 @@ https://stackoverflow.com/questions/49516399/how-to-use-m5-readfile-and-m5-execf
|
||||
Host:
|
||||
|
||||
....
|
||||
date >m5out/myreadfile
|
||||
date >readfile.gitignore
|
||||
....
|
||||
|
||||
Guest:
|
||||
@@ -3359,7 +3359,7 @@ cp br2.gitignore.example br2.gitignore
|
||||
`make menuconfig` is a convenient way to find Buildroot configurations:
|
||||
|
||||
....
|
||||
cd buildroot/output.x86_64~
|
||||
cd out/x86_64/buildroot
|
||||
make menuconfig
|
||||
....
|
||||
|
||||
@@ -3432,7 +3432,7 @@ If you don't set it, the default is to use `~/.buildroot-ccache` with `5G`, whic
|
||||
I find it very relaxing to watch ccache at work with:
|
||||
|
||||
....
|
||||
watch -n1 'make -C buildroot/output.x86_64~/ ccache-stats'
|
||||
watch -n1 'make -C out/x86_64/buildroot/ ccache-stats'
|
||||
....
|
||||
|
||||
or if you have it installed on host and the environment variables exported simply with:
|
||||
@@ -3452,7 +3452,7 @@ Send a pull request if you try it out on something significantly different.
|
||||
=== Find which packages are making the build slow
|
||||
|
||||
....
|
||||
cd buildroot/output.x86_64~
|
||||
cd out/x86_64/buildroot
|
||||
make graph-build graph-depends
|
||||
xdg-open graphs/build.pie-packages.pdf
|
||||
xdg-open graphs/graph-depends.pdf
|
||||
|
||||
9
br2
9
br2
@@ -7,6 +7,12 @@ BR2_TARGET_ROOTFS_EXT2=y
|
||||
BR2_TARGET_ROOTFS_INITRAMFS=n
|
||||
BR2_TARGET_ROOTFS_EXT2_SIZE="512M"
|
||||
|
||||
# We were tempted to do this to disable S40network neatly,
|
||||
# but that package also creates extra configuration files
|
||||
# such as /etc/network/interfaces which we need. So we just
|
||||
# remove the init.d file for now.
|
||||
#BR2_PACKAGE_IFUPDOWN_SCRIPTS=n
|
||||
|
||||
BR2_CCACHE=y
|
||||
# Otherwise our precious debug would break!
|
||||
BR2_CCACHE_USE_BASEDIR=n
|
||||
@@ -29,9 +35,6 @@ BR2_TOOLCHAIN_BUILDROOT_CXX=y
|
||||
BR2_TOOLCHAIN_BUILDROOT_FORTRAN=y
|
||||
BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
|
||||
|
||||
# We use our own to turn it on and off at runtime.
|
||||
BR2_PACKAGE_IFUPDOWN_SCRIPTS=n
|
||||
|
||||
# lscpu: TODO not installing?
|
||||
BR2_PACKAGE_UTIL_LINUX=y
|
||||
BR2_PACKAGE_UTIL_LINUX_BINARIES=y
|
||||
|
||||
15
build
15
build
@@ -83,6 +83,7 @@ done
|
||||
shift $(($OPTIND - 1))
|
||||
extra_make_args="$extra_make_args $@"
|
||||
set_common_vars "$arch" "$gem5"
|
||||
config_file="${buildroot_out_dir}/.config"
|
||||
case "$arch" in
|
||||
x86_64)
|
||||
defconfig=qemu_x86_64_defconfig
|
||||
@@ -108,7 +109,7 @@ if "$configure"; then
|
||||
for p in $(find "${root_dir}/buildroot_patches/" -maxdepth 1 -name '*.patch' -print); do
|
||||
patch -N -r - -p 1 <"$p" || :
|
||||
done
|
||||
make O="$out_dir" BR2_EXTERNAL="../kernel_module:../gem5:../parsec-benchmark" "$defconfig"
|
||||
make O="$buildroot_out_dir" BR2_EXTERNAL="../kernel_module:../gem5:../parsec-benchmark" "$defconfig"
|
||||
# TODO Can't get rid of these for now.
|
||||
# http://stackoverflow.com/questions/44078245/is-it-possible-to-use-config-fragments-with-buildroots-config
|
||||
for config_fragment in $config_fragments; do
|
||||
@@ -116,6 +117,7 @@ if "$configure"; then
|
||||
done
|
||||
printf "
|
||||
BR2_JLEVEL=$j
|
||||
BR2_DL_DIR=\"${common_dir}/dl\"
|
||||
BR2_ROOTFS_POST_SCRIPT_ARGS=\"$post_script_args\"
|
||||
" >> "${config_file}"
|
||||
if "$gem5"; then
|
||||
@@ -151,13 +153,14 @@ BR2_ROOTFS_POST_SCRIPT_ARGS=\"$post_script_args\"
|
||||
# http://lists.busybox.net/pipermail/buildroot/2017-August/201053.html
|
||||
sed -Ei 's/^BR2_PACKAGE_LINUX_TOOLS_GPIO/BR2_PACKAGE_LINUX_TOOLS_GPIO=n/' "${config_file}"
|
||||
fi
|
||||
make O="$out_dir" olddefconfig
|
||||
make O="$buildroot_out_dir" olddefconfig
|
||||
fi
|
||||
|
||||
# Build.
|
||||
mkdir -p \
|
||||
"${gem5_out_dir}" \
|
||||
"${qemu_out_dir}" \
|
||||
"${root_dir}/9p" \
|
||||
"${lkmc_out_dir}" \
|
||||
;
|
||||
cd "${buildroot_dir}"
|
||||
# HOST_QEMU_OPTS is a hack that happens to work because the QEMU package luckly uses += at all times.
|
||||
@@ -172,10 +175,10 @@ cmd="time \
|
||||
env \
|
||||
-u LD_LIBRARY_PATH \
|
||||
make \
|
||||
O='${out_dir}' \
|
||||
HOST_QEMU_OPTS='--enable-debug --extra-cflags=-DDEBUG_PL061=1 --enable-trace-backends=simple $qemu_sdl' \
|
||||
O='${buildroot_out_dir}' \
|
||||
HOST_QEMU_OPTS='--enable-debug --extra-cflags=-DDEBUG_PL061=1 --enable-trace-backends=simple ${qemu_sdl}' \
|
||||
V='$v' \
|
||||
$extra_make_args \
|
||||
${extra_make_args} \
|
||||
all \
|
||||
"
|
||||
echo "$cmd" | tee "${root_dir}/build.log"
|
||||
|
||||
@@ -1,2 +1,2 @@
|
||||
#!/usr/bin/env bash
|
||||
asciidoctor README.adoc
|
||||
asciidoctor -o out/README.html README.adoc
|
||||
|
||||
12
common
12
common
@@ -8,8 +8,12 @@ set_common_vars() {
|
||||
if "$gem5" && [ ! "$arch" = aarch64 ]; then
|
||||
arch_dir="${arch}-gem5"
|
||||
fi
|
||||
out_dir="${buildroot_dir}/output.${arch_dir}~"
|
||||
config_file="${out_dir}/.config"
|
||||
lkmc_out_dir="${out_dir}/lkmc"
|
||||
images_dir="${out_dir}/images"
|
||||
out_dir="${root_dir}/out"
|
||||
out_arch_dir="${out_dir}/${arch_dir}"
|
||||
buildroot_out_dir="${out_arch_dir}/buildroot"
|
||||
build_dir="${buildroot_out_dir}/build"
|
||||
host_dir="${buildroot_out_dir}/host"
|
||||
gem5_out_dir="${out_arch_dir}/gem5"
|
||||
qemu_out_dir="${out_arch_dir}/qemu"
|
||||
common_dir="${out_dir}/common"
|
||||
}
|
||||
|
||||
33
run
33
run
@@ -90,6 +90,7 @@ done
|
||||
shift "$(($OPTIND - 1))"
|
||||
extra_flags="$extra_flags $@"
|
||||
set_common_vars "$arch" "$gem5"
|
||||
images_dir="${buildroot_out_dir}/images"
|
||||
if "$debug" && "$kvm"; then
|
||||
echo 'error: -d and -K are incompatible' 1>&2
|
||||
exit 1
|
||||
@@ -117,29 +118,27 @@ if [ -n "$extra_append_after_dash" ]; then
|
||||
fi
|
||||
|
||||
if "$gem5"; then
|
||||
build_dir="${out_dir}/build/gem5-1.0"
|
||||
gem5_build_dir="${buildroot_out_dir}/build/gem5-1.0"
|
||||
gem5_src_dir="${gem5_build_dir}/gem5"
|
||||
memory="${memory}B"
|
||||
gem5_dir="${build_dir}/gem5"
|
||||
if [ "$arch" = x86_64 ]; then
|
||||
gem5_arch=X86
|
||||
else
|
||||
gem5_arch=ARM
|
||||
fi
|
||||
m5out_dir="${root_dir}/m5out"
|
||||
gem5_cpt_dir="${m5out_dir}/cpts/${arch}"
|
||||
mkdir -p "$gem5_cpt_dir"
|
||||
m5out_dir="${gem5_out_dir}/m5out"
|
||||
gem5_common="\
|
||||
M5_PATH='${build_dir}/system' \
|
||||
$debug_vm \
|
||||
'${gem5_dir}/build/${gem5_arch}/gem5.opt' \
|
||||
M5_PATH='${gem5_build_dir}/system' \
|
||||
${debug_vm} \
|
||||
'${gem5_src_dir}/build/${gem5_arch}/gem5.opt' \
|
||||
${gem5opts} \
|
||||
'${gem5_dir}/configs/example/fs.py' \
|
||||
--checkpoint-dir='${gem5_cpt_dir}' \
|
||||
--disk-image='${out_dir}/images/rootfs.ext2' \
|
||||
--kernel='${out_dir}/build/linux-custom/vmlinux' \
|
||||
-d '${m5out_dir}' \
|
||||
'${gem5_src_dir}/configs/example/fs.py' \
|
||||
--disk-image='${images_dir}/rootfs.ext2' \
|
||||
--kernel='${buildroot_out_dir}/build/linux-custom/vmlinux' \
|
||||
--mem-size=${memory} \
|
||||
--num-cpus='${cpus}' \
|
||||
--script='${m5out_dir}/myreadfile' \
|
||||
--script='${root_dir}/readfile.gitignore' \
|
||||
"
|
||||
if [ "$arch" = x86_64 ]; then
|
||||
if "$kvm"; then
|
||||
@@ -155,7 +154,7 @@ ${extra_flags} \
|
||||
# Anything smaller than physical blows up as expected, but why can't it auto-detect the right value?
|
||||
cmd="${gem5_common} \
|
||||
--command-line='earlyprintk=pl011,0x1c090000 console=ttyAMA0 lpj=19988480 rw loglevel=8 mem=${memory} root=/dev/sda ${extra_append}' \
|
||||
--dtb-file='${gem5_dir}/system/arm/dt/$([ "$arch" = arm ] && echo "armv7_gem5_v1_${cpus}cpu" || echo "armv8_gem5_v1_${cpus}cpu").dtb' \
|
||||
--dtb-file='${gem5_src_dir}/system/arm/dt/$([ "$arch" = arm ] && echo "armv7_gem5_v1_${cpus}cpu" || echo "armv8_gem5_v1_${cpus}cpu").dtb' \
|
||||
--machine-type=VExpress_GEM5_V1 \
|
||||
${extra_flags} \
|
||||
"
|
||||
@@ -167,15 +166,15 @@ else
|
||||
extra_flags="${extra_flags_qemu} ${extra_flags}"
|
||||
qemu_common="\
|
||||
${debug_vm} \
|
||||
'${out_dir}/host/usr/bin/qemu-system-${arch}' \
|
||||
'${buildroot_out_dir}/host/usr/bin/qemu-system-${arch}' \
|
||||
-gdb tcp::1234 \
|
||||
-m ${memory} \
|
||||
-monitor telnet::45454,server,nowait \
|
||||
-netdev user,hostfwd=tcp::45455-:45455,hostfwd=tcp::45456-:22,id=net0 \
|
||||
-smp ${cpus} \
|
||||
-trace enable=${trace_enable},file='${lkmc_out_dir}/trace.bin' \
|
||||
-trace enable=${trace_enable},file='${qemu_out_dir}/trace.bin' \
|
||||
-virtfs local,path=9p,mount_tag=host_scratch,security_model=mapped,id=host_scratch \
|
||||
-virtfs local,path=${out_dir}/build,mount_tag=host_out,security_model=mapped,id=host_out \
|
||||
-virtfs local,path=${buildroot_out_dir}/build,mount_tag=host_out,security_model=mapped,id=host_out \
|
||||
"
|
||||
if "$initrd"; then
|
||||
extra_flags="${extra_flags} -initrd '${images_dir}/rootfs.cpio'"
|
||||
|
||||
4
rungdb
4
rungdb
@@ -42,8 +42,8 @@ else
|
||||
port=1234
|
||||
fi
|
||||
set_common_vars "$arch" "$gem5"
|
||||
gdb="${out_dir}/host/usr/bin/${arch}-linux-gdb ${before}"
|
||||
cd "${out_dir}/build/linux-custom/"
|
||||
gdb="${host_dir}/usr/bin/${arch}-linux-gdb ${before}"
|
||||
cd "${build_dir}/linux-custom/"
|
||||
if "$kgdb"; then
|
||||
cmd="\
|
||||
${gdb} \
|
||||
|
||||
@@ -30,8 +30,8 @@ else
|
||||
brk=''
|
||||
fi
|
||||
set_common_vars "$arch" "$gem5"
|
||||
executable="${out_dir}/build/${executable_rel}"
|
||||
readelf="${out_dir}/host/usr/bin/${arch}-linux-readelf"
|
||||
executable="${build_dir}/${executable_rel}"
|
||||
readelf="${host_dir}/usr/bin/${arch}-linux-readelf"
|
||||
addr="$("$readelf" -h "$executable" | awk '/Entry/{ print $NF }' )"
|
||||
ex="-ex \"add-symbol-file $executable $addr\""
|
||||
# -L or else lx-symbols throws for arm:
|
||||
|
||||
@@ -16,11 +16,11 @@ done
|
||||
shift "$(($OPTIND - 1))"
|
||||
executable="$1"
|
||||
set_common_vars "$arch" "$gem5"
|
||||
"${out_dir}/host/usr/bin/${arch}-linux-gdb" \
|
||||
"${host_dir}/usr/bin/${arch}-linux-gdb" \
|
||||
-q \
|
||||
-ex "set sysroot ${out_dir}/staging" \
|
||||
-ex "set sysroot ${buildroot_out_dir}/staging" \
|
||||
-ex 'target remote localhost:45455' \
|
||||
-ex 'tb main' \
|
||||
-ex 'c' \
|
||||
"${out_dir}/build/${executable}" \
|
||||
"${build_dir}/${executable}" \
|
||||
;
|
||||
|
||||
10
trace-boot
10
trace-boot
@@ -11,13 +11,13 @@ while getopts a: OPT; do
|
||||
done
|
||||
set_common_vars "$arch" false
|
||||
time ./run -a "$arch" -e 'init=/poweroff.out' -T exec_tb
|
||||
time ./qemu/scripts/simpletrace.py "${out_dir}/build/host-qemu-custom/trace-events-all" "${lkmc_out_dir}/trace.bin" >"${lkmc_out_dir}/trace.txt"
|
||||
time ./qemu/scripts/simpletrace.py "${build_dir}/host-qemu-custom/trace-events-all" "${qemu_out_dir}/trace.bin" >"${qemu_out_dir}/trace.txt"
|
||||
|
||||
# Instruction count.
|
||||
# We could put this on a separate script, but it just adds more arch boilerplate to a new script.
|
||||
# So let's just leave it here for now since it did not add a significant processing time.
|
||||
echo "instruction count all: $(wc -l "${lkmc_out_dir}/trace.txt" | cut -d' ' -f1)"
|
||||
entry_addr=$("${out_dir}"/host/bin/*-buildroot-*-readelf -h "${out_dir}/build/linux-custom/vmlinux" | grep 'Entry point address' | sed -E 's/.*: *//')
|
||||
echo "instruction count all: $(wc -l "${qemu_out_dir}/trace.txt" | cut -d' ' -f1)"
|
||||
entry_addr=$("${host_dir}"/bin/*-buildroot-*-readelf -h "${build_dir}/linux-custom/vmlinux" | grep 'Entry point address' | sed -E 's/.*: *//')
|
||||
echo "entry address: ${entry_addr}"
|
||||
sed "/${entry_addr}/q" "${lkmc_out_dir}/trace.txt" >"${lkmc_out_dir}/trace-boot.txt"
|
||||
echo "instruction count firmware: $(wc -l "${lkmc_out_dir}/trace-boot.txt" | cut -d' ' -f1)"
|
||||
sed "/${entry_addr}/q" "${qemu_out_dir}/trace.txt" >"${qemu_out_dir}/trace-boot.txt"
|
||||
echo "instruction count firmware: $(wc -l "${qemu_out_dir}/trace-boot.txt" | cut -d' ' -f1)"
|
||||
|
||||
@@ -10,9 +10,9 @@ while getopts a: OPT; do
|
||||
esac
|
||||
done
|
||||
set_common_vars "$arch" false
|
||||
kernel_dir="${out_dir}/build/linux-custom"
|
||||
sed -E 's/.*pc=//' "${lkmc_out_dir}/trace.txt" | \
|
||||
xargs "${out_dir}/host/bin/${arch}-linux-addr2line" -e "${kernel_dir}/vmlinux" -fp | \
|
||||
kernel_dir="${build_dir}/linux-custom"
|
||||
sed -E 's/.*pc=//' "${qemu_out_dir}/trace.txt" | \
|
||||
xargs "${host_dir}/bin/${arch}-linux-addr2line" -e "${kernel_dir}/vmlinux" -fp | \
|
||||
sed -E "s|at ${kernel_dir}/(\./\|)||" | \
|
||||
uniq -c \
|
||||
> "${lkmc_out_dir}/trace-lines.txt"
|
||||
> "${qemu_out_dir}/trace-lines.txt"
|
||||
|
||||
Reference in New Issue
Block a user