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serenity/Ports/fio/patches/ReadMe.md
Brian Gianforcaro 4490668af2 Ports: Add fio port 
fio allows you to test various different IO subsystems and patterns.
It can help us test and benchmark the I/O subsystems of Serenity.

This port gets the fio bootstrapped and working, using the included
.fio file, I have been able to test the file I/O performance already.
2021-12-22 13:28:13 -08:00

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Patches for fio 3.29 on SerenityOS

0001-fio-remove-non-existent-header-sys-ipc.patch

Serenity currently doesn't have a <sys/ipc.h> header, so we have to patch the include out.

0002-fio-add-serenityos-platform-support.patch

fio abstracts individual operating system support out into to an os/os-<name>.h header where you can select which platform features are available and implement missing function stubs for our operating system.

This patch implements basic OS support for Serenity just to get fio up and running.

0003-fio-add-serenityos-support-to-configure.patch

This patch implements targetos detection for serenity, and also disables shared memory support automatically for serenity, as it's not currently supported.

0004-fio-disable-rdtsc-support-for-serenityos.patch

This patch disables the function which uses rdtsc to get the current clock time, as that instruction isn't allowed to be called from user space by serenity.

If you did attempt to call it you would trip a segfault.