V2.5 lx2160acex7 - Backport snoop-delayed exclusive handling on A72 cores #1
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
|
Converting to draft as it does not solve rcu stalls on OpenZFS workloads.
|
ndoo
force-pushed
the
v2.5-lx2160acex7
branch
2 times, most recently
from
aa32070 to
728a100
Compare
The Cortex-A72 based cores on K3 platforms can be clocked fast enough that an extra latency cycle is needed to ensure correct L2 access. Set the latency here for all A72 cores. Signed-off-by: Andrew Davis <afd@ti.com> Change-Id: I639091dd0d2de09572bf0f73ac404e306e336883
The Cortex-A72 based cores on K3 platforms have cache ECC and parity protection, enable these. Signed-off-by: Andrew Davis <afd@ti.com> Change-Id: Icd00bc4aa9c1c48f0fb2a10ea66e75e0b146ef3c
Snoop requests should not be responded to during atomic operations. This can be handled by the interconnect using its global monitor or by the core's SCU delaying to check for the corresponding atomic monitor state. TI SoCs take the second approach. Set the snoop-delayed exclusive handling bit to inform the core it needs to delay responses to perform this check. As J784s4 is currently the only SoC with multiple A72 clusters, limit this delay to only that device. Signed-off-by: Andrew Davis <afd@ti.com> Change-Id: I875f64e4f53d47a9a0ccbf3415edc565be7f84d9
ndoo
force-pushed
the
v2.5-lx2160acex7
branch
14 times, most recently
from
34dd1a0 to
4ec6fad
Compare
Signed-off-by: Andrew Yong <me@ndoo.sg>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Backport patch from @jnettlet on Discord to v2.5 tag.
Cherry-pick the commit with the definition of
CORTEX_A72_CPUACTLR_DELAY_EXCLUSIVE_SNOOPininclude/lib/cpus/aarch32/cortex_a72.hfrom mainline.