drm/nouveau/imem/nv50: move slow-path locking into rd/wr functions

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This is to simplify upcoming changes.  The slow-path is something that
currently occurs during bootstrap of the BAR2 VMM, while backing up an
object during suspend/resume, or when BAR2 address space runs out.

The latter is a real problem that can happen at runtime, and occurs in
Fedora 26 already (due to some change that causes a lot of channels to
be created at login), so ideally we'd prefer not to make it any slower.

We'd also like suspend/resume speed to not suffer.

Upcoming commits will solve those problems in a better way, making the
extra overhead of moving the locking here a non-issue.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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Ben Skeggs 2017-11-01 03:56:19 +10:00

parent f584bde609

commit af515ec8d3

1 changed files with 6 additions and 8 deletions

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drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c

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