3rd-party/linux-kernel-module-cheat
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start microbenchmarks section

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Ciro Santilli 六四事件 法轮功
2020-03-12 00:00:01 +00:00
parent d53ffcff18
commit f9acdc0525
3 changed files with 12 additions and 3 deletions
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10
README.adoc
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@@ -16422,8 +16422,14 @@ Don't forget to explicitly rebuild PARSEC with:
You may also want to test if your patches are still functionally correct inside of QEMU first, which is a faster emulator. You may also want to test if your patches are still functionally correct inside of QEMU first, which is a faster emulator.
* sell your soul, and compile natively inside the guest. We won't do this, not only because it is evil, but also because Buildroot explicitly does not support it: https://buildroot.org/downloads/manual/manual.html#faq-no-compiler-on-target ARM employees have been known to do this: https://github.com/arm-university/arm-gem5-rsk/blob/aa3b51b175a0f3b6e75c9c856092ae0c8f2a7cdc/parsec_patches/qemu-patch.diff * sell your soul, and compile natively inside the guest. We won't do this, not only because it is evil, but also because Buildroot explicitly does not support it: https://buildroot.org/downloads/manual/manual.html#faq-no-compiler-on-target ARM employees have been known to do this: https://github.com/arm-university/arm-gem5-rsk/blob/aa3b51b175a0f3b6e75c9c856092ae0c8f2a7cdc/parsec_patches/qemu-patch.diff
=== Micro benchmarks
It eventually has to come to that, hasn't it?
* link:userland/gcc/busy_loop.c[] described at <<infinite-busy-loop>>
[[userland-libs-directory]] [[userland-libs-directory]]
==== userland/libs directory === userland/libs directory
Tests under link:userland/libs[] require certain optional libraries to be installed on the target, and are not built or tested by default, you must enable them with either: Tests under link:userland/libs[] require certain optional libraries to be installed on the target, and are not built or tested by default, you must enable them with either:
@@ -16434,7 +16440,7 @@ Tests under link:userland/libs[] require certain optional libraries to be instal
See for example <<blas>>. See for example <<blas>>.
===== HDF5 ==== HDF5
https://en.wikipedia.org/wiki/Hierarchical_Data_Format https://en.wikipedia.org/wiki/Hierarchical_Data_Format

1
path_properties.py
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@@ -690,6 +690,7 @@ path_properties_tuples = (
'gcc': ( 'gcc': (
{**gnu_extension_properties, **{'cc_pedantic': False}}, {**gnu_extension_properties, **{'cc_pedantic': False}},
{ {
'busy_loop.c': {'baremetal': True},
'openmp.c': {'cc_flags': ['-fopenmp', LF]}, 'openmp.c': {'cc_flags': ['-fopenmp', LF]},
} }
), ),

4
userland/gcc/busy_loop.c
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@@ -1,4 +1,6 @@
/* https://cirosantilli.com/linux-kernel-module-cheat#compilers */ /* https://cirosantilli.com/linux-kernel-module-cheat#micro-benchmarks
* https://cirosantilli.com/linux-kernel-module-cheat#infinite-busy-loop
* https://cirosantilli.com/linux-kernel-module-cheat#benchmark-emulators-on-userland-executables */
#include <stdlib.h> #include <stdlib.h>