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Differential D32029

Convert consumers to use the CPU_FOREACH_SET() macro
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Authored by markj on Sep 20 2021, 7:11 PM.
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bcran
imp
rgrimes
rpokala

Details

Reviewers
rlibby
scottph
kib
cem
jhb
Group Reviewers
bhyve
Commits
rGde8554295b47: cpuset(9): Add CPU_FOREACH_IS(SET|CLR) and modify consumers to use it
rG9068f6ea697b: cpuset(9): Add CPU_FOREACH_IS(SET|CLR) and modify consumers to use it
Summary

This implementation is faster and doesn't modify the cpuset, so it lets
us avoid some unnecessary copying. No functional change intended.

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Repository
rS FreeBSD src repository - subversion
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No Test Coverage
Build Status
Buildable 41609
Build 38498: arc lint + arc unit

Event Timeline

markj created this revision.Sep 20 2021, 7:11 PM
Herald added a reviewer: bhyve. · View Herald TranscriptSep 20 2021, 7:11 PM
Herald added subscribers: bcran, rgrimes, rpokala, imp. · View Herald Transcript
markj requested review of this revision.Sep 20 2021, 7:11 PM
Harbormaster completed remote builds in B41609: Diff 95395.Sep 20 2021, 7:11 PM
markj added a parent revision: D32028: bitset(9): Introduce BIT_FOREACH_SET and BIT_FOREACH_CLR.Sep 20 2021, 7:11 PM
cem accepted this revision.Sep 20 2021, 7:16 PM
This revision is now accepted and ready to land.Sep 20 2021, 7:16 PM
jhb accepted this revision.Sep 20 2021, 8:18 PM
kib accepted this revision.Sep 20 2021, 8:26 PM

BTW there is enough similar iterations FFS/CLR done over the signal sets/masks. Do you plan to look at this as well?

markj added a comment.Sep 20 2021, 8:38 PM
In D32029#722803, @kib wrote:

BTW there is enough similar iterations FFS/CLR done over the signal sets/masks. Do you plan to look at this as well?

I will try implementing this for sigsets too. I guess it would be somewhat messy to change the kernel to use bitset(9) for signal sets?

Closed by commit rG9068f6ea697b: cpuset(9): Add CPU_FOREACH_IS(SET|CLR) and modify consumers to use it (authored by markj). · Explain WhySep 21 2021, 4:09 PM
This revision was automatically updated to reflect the committed changes.
markj added a commit: rG9068f6ea697b: cpuset(9): Add CPU_FOREACH_IS(SET|CLR) and modify consumers to use it.
rlibby added inline comments.Sep 21 2021, 5:36 PM
sys/amd64/vmm/io/vlapic.c
895–897

This is currently broken due to the issue with break noted in D32028.

sys/amd64/vmm/vmm_lapic.c
92–94

Again, break is broken.

markj added a reverting change: rGbcdc599dc2a1: Revert "cpuset(9): Add CPU_FOREACH_IS(SET|CLR) and modify consumers to use it".Sep 21 2021, 5:52 PM
markj added inline comments.Sep 21 2021, 5:53 PM
sys/amd64/vmm/io/vlapic.c
895–897

Thanks, I reverted this commit for now.

markj added a commit: rGde8554295b47: cpuset(9): Add CPU_FOREACH_IS(SET|CLR) and modify consumers to use it.Oct 18 2021, 2:09 PM

Revision Contents
Changeset List

PathSize
sys/
amd64/
amd64/
11 lines
vmm/
io/
13 lines
4 lines
i386/
i386/
4 lines
sys/
2 lines
x86/
x86/
4 lines

Diff 95395

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sys/amd64/amd64/mp_machdep.c

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sys/amd64/vmm/io/vlapic.c

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sys/amd64/vmm/vmm_lapic.c

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sys/i386/i386/mp_machdep.c

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sys/sys/cpuset.h

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sys/x86/x86/mp_x86.c

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