| f2de5a6d | 19-Jun-2025 |
Aymeric Wibo <obiwac@FreeBSD.org> |
amdsmu: Read and dump idlemask
Read and dump the SMU's idlemask value in `dev.amdsmu.0.idlemask`
sysctl.
The idlemask is used internally by AMD and its value is not documented
anywhere. This patch
amdsmu: Read and dump idlemask
Read and dump the SMU's idlemask value in `dev.amdsmu.0.idlemask`
sysctl.
The idlemask is used internally by AMD and its value is not documented
anywhere. This patch exposes it mainly to help AMD diagnose issues with
S0i3 entry on FreeBSD.
Reviewed by: cem, emaste, kib, mckusick (mentor)
Approved by: emaste, kib, mckusick (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D51487
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| e4e44f69 | 14-Jun-2025 |
Aymeric Wibo <obiwac@FreeBSD.org> |
amdsmu: Expose sysctls for metrics about last sleep
Get "log" address with the `SMU_MSG_LOG_GETDRAM_ADDR_HI/LO` SMU
commands. From this, we dump & read metrics about residency in various
sleep state
amdsmu: Expose sysctls for metrics about last sleep
Get "log" address with the `SMU_MSG_LOG_GETDRAM_ADDR_HI/LO` SMU
commands. From this, we dump & read metrics about residency in various
sleep states (none, S0i2, and S0i3), as well as active durations for
the IP blocks on the CPU during the last sleep. All these metrics are
exposed under the `dev.amdsmu.0.metrics` node.
This is useful for debugging sleep as the residency registers in the
`_LPI` object are not populated on some systems (e.g. AMD Phoenix).
A `dev.amdsmu.0.ip_blocks.XXX` node is also created for each IP block,
with children for the current active state and time spent active during
the last sleep.
Differential Revision: https://reviews.freebsd.org/D48714
Reviewed by: cem, kib, mckusick
Approved by: kib, mckusick
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D48714
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