freebsd: Use compiler.h from FreeBSD's base's linuxkpi #16650
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The FreeBSD linux/compiler.h in OpenZFS was copied from a very old version of FreeBSD's linuxkpi's linux/compiler.h. There's no need for this duplication. Use FreeBSD's linuxkpi version instead, and provide zfs_fallthrough to augment it (it's all that's needed). Use #pragma once to avoid naming issues for guard variables. Since this is a complete rewrite, use my copyright here (the original code in FreeBSD still credits everybody). This works back at least to FreeBSD 12.4, which is not out of support, and all newer releases. Remove extra copies of macros that were defined elsewhere, but are now properly defined in LinuxKPI so are redundant. Sponsored-by: Netflix Signed-off-by: Warner Losh <imp@bsdimp.com>
tonyhutter
approved these changes
Oct 15, 2024
behlendorf
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Oct 16, 2024
behlendorf
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Status: Accepted
behlendorf
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Oct 21, 2024
The FreeBSD linux/compiler.h in OpenZFS was copied from a very old version of FreeBSD's linuxkpi's linux/compiler.h. There's no need for this duplication. Use FreeBSD's linuxkpi version instead, and provide zfs_fallthrough to augment it (it's all that's needed). Use #pragma once to avoid naming issues for guard variables. Since this is a complete rewrite, use my copyright here (the original code in FreeBSD still credits everybody). This works back at least to FreeBSD 12.4, which is not out of support, and all newer releases. Remove extra copies of macros that were defined elsewhere, but are now properly defined in LinuxKPI so are redundant. Sponsored-by: Netflix Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Warner Losh <imp@bsdimp.com> Closes openzfs#16650
behlendorf
pushed a commit
to behlendorf/zfs
that referenced
this pull request
Oct 21, 2024
The FreeBSD linux/compiler.h in OpenZFS was copied from a very old version of FreeBSD's linuxkpi's linux/compiler.h. There's no need for this duplication. Use FreeBSD's linuxkpi version instead, and provide zfs_fallthrough to augment it (it's all that's needed). Use #pragma once to avoid naming issues for guard variables. Since this is a complete rewrite, use my copyright here (the original code in FreeBSD still credits everybody). This works back at least to FreeBSD 12.4, which is not out of support, and all newer releases. Remove extra copies of macros that were defined elsewhere, but are now properly defined in LinuxKPI so are redundant. Sponsored-by: Netflix Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Warner Losh <imp@bsdimp.com> Closes openzfs#16650
ptr1337
pushed a commit
to CachyOS/zfs
that referenced
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Nov 21, 2024
The FreeBSD linux/compiler.h in OpenZFS was copied from a very old version of FreeBSD's linuxkpi's linux/compiler.h. There's no need for this duplication. Use FreeBSD's linuxkpi version instead, and provide zfs_fallthrough to augment it (it's all that's needed). Use #pragma once to avoid naming issues for guard variables. Since this is a complete rewrite, use my copyright here (the original code in FreeBSD still credits everybody). This works back at least to FreeBSD 12.4, which is not out of support, and all newer releases. Remove extra copies of macros that were defined elsewhere, but are now properly defined in LinuxKPI so are redundant. Sponsored-by: Netflix Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Warner Losh <imp@bsdimp.com> Closes openzfs#16650
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The FreeBSD linux/compiler.h in OpenZFS was copied from a very old version of FreeBSD's linuxkpi's linux/compiler.h. There's no need for this duplication. Use FreeBSD's linuxkpi version instead, and provide zfs_fallthrough to augment it (it's all that's needed). Use #pragma once to avoid naming issues for guard variables. Since this is a complete rewrite, use my copyright here (the original code in FreeBSD still credits everybody). This works back at least to FreeBSD 12.4, which is not out of support, and all newer releases.
Remove extra copies of macros that were defined elsewhere, but are now properly defined in LinuxKPI so are redundant.
Sponsored-by: Netflix
Signed-off-by: Warner Losh imp@bsdimp.com
Motivation and Context
Description
OpenZFS has an ancient copy of FreeBSD's LKPI compiler.h. Rather than make yet another copy in an indirect tree that has to be maintained, make the OpenZFS one use FreeBSD's directly. Since at least FreeBSD 12, this has everything needed except zfs_fallthrough, so define that here.
How Has This Been Tested?
Ran FreeBSD's make universe with these changes on FreeBSD main. I ran make buildworld and buildkernel on aarch64 and amd64 for stable/14, stable/13 and stable/12. I booted the result on main with a fresh world and observed no regressions.
Types of changes
Checklist:
Signed-off-by.