Re: [RFC PATCH 0/6] mm/damon: hardware-sampled access reports

[Zeng Heng]

Hi Ravi,

On 2026/5/30 0:56, Ravi Jonnalagadda wrote:
> This series introduces a vendor and PMU-agnostic substrate inside DAMON
> that consumes hardware-sampled access reports through the standard
> perf-event interface.  Userspace selects the PMU through sysfs (raw
> type/config knobs), driving either Intel PEBS L3-miss sampling or AMD
> IBS Op sampling.

[...]

> Ravi Jonnalagadda (6):
>    mm/damon: add struct damon_perf_event{,_attr} and per-ctx perf_events
>      list
>    mm/damon/sysfs-sample: expose perf_events configuration via sysfs
>    mm/damon/sysfs: install perf_events on apply
>    mm/damon/core: per-CPU SPSC ring drain and damon_perf_event lifecycle
>    mm/damon/vaddr: implement perf-event access check
>    mm/damon: add damos_node_eligible_mem_bp tracepoint
>
>   include/linux/damon.h        |  80 +++++
>   include/trace/events/damon.h |  49 +++
>   mm/damon/core.c              | 403 ++++++++++++++++++++----
>   mm/damon/ops-common.h        |  39 +++
>   mm/damon/sysfs-common.h      |   6 +
>   mm/damon/sysfs-sample.c      | 579 +++++++++++++++++++++++++++++++++++
>   mm/damon/sysfs.c             |   3 +
>   mm/damon/vaddr.c             | 267 ++++++++++++++++
>   8 files changed, 1370 insertions(+), 56 deletions(-)
>
>
> base-commit: 4c8ad15abf15eb480d3ad85f902001e35465ef18

I wasn't able to apply this patch series to the linux (and linux-next)
mainline branch, and also had trouble identifying the source of the base
commit.

Would you mind sharing where this baseline is from?

Thanks in advance!


Best Regards,
Zeng Heng