Diffusion FreeBSD src repository - subversion rS356200

Use atomic for start_count in devstat_start_transaction().
rS356200
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Description

Use atomic for start_count in devstat_start_transaction().

Combined with earlier nstart/nend removal it allows to remove several locks
from request path of GEOM and few other places. It would be cool if we had
more SMP-friendly statistics, but this helps too.

Details

Provenance

mav	Authored on

Parents

rS356199: [PowerPC] Fix panic when attempting to handle an HMI from an idle thread

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mav committed rS356200: Use atomic for start_count in devstat_start_transaction()..Dec 30 2019, 3:13 AM

Changes (7)

Path

Size

head/

sys/

cam/

ctl/

ctl_backend_block.c

dev/

md/

nvdimm/

geom/

kern/

rS356200

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head/sys/cam/ctl/ctl_backend_block.c

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head/sys/dev/md/md.c

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head/sys/dev/nvdimm/nvdimm_spa.c

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head/sys/dev/nvdimm/nvdimm_var.h

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head/sys/geom/geom_disk.c

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head/sys/geom/geom_io.c

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head/sys/kern/subr_devstat.c

Use atomic for start_count in devstat_start_transaction().rS356200Actions

Description

Details

Event Timeline

Changes (7)

rS356200

head/sys/cam/ctl/ctl_backend_block.c

head/sys/dev/md/md.c

head/sys/dev/nvdimm/nvdimm_spa.c

head/sys/dev/nvdimm/nvdimm_var.h

head/sys/geom/geom_disk.c

head/sys/geom/geom_io.c

head/sys/kern/subr_devstat.c

Use atomic for start_count in devstat_start_transaction().
rS356200
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