From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org,corbet@lwn.net,sj@kernel.org,akpm@linux-foundation.org
Subject: + mm-damon-core-set-damos_filter-default-allowance-behavior-based-on-installed-filters.patch added to mm-unstable branch
Date: Tue, 04 Mar 2025 15:19:13 -0800 [thread overview]
Message-ID: <20250304231914.08FE5C4CEE9@smtp.kernel.org> (raw)
The patch titled
Subject: mm/damon/core: set damos_filter default allowance behavior based on installed filters
has been added to the -mm mm-unstable branch. Its filename is
mm-damon-core-set-damos_filter-default-allowance-behavior-based-on-installed-filters.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-core-set-damos_filter-default-allowance-behavior-based-on-installed-filters.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: mm/damon/core: set damos_filter default allowance behavior based on installed filters
Date: Tue, 4 Mar 2025 13:19:11 -0800
Decide whether to allow or reject by default on core and opertions layer
handled filters evaluation stages. It is decided as the opposite of the
last installed filter's behavior. If there is no filter at all, allow by
default. If there is any operations layer handled filters, core layer's
filtering stage sets allowing as the default behavior regardless of the
last filter of core layer-handling ones, since the last filter of core
layer handled filters in the case is not really the last filter of the
entire filtering stage.
Also, make the core layer's DAMOS filters handling stage uses the newly
set behavior field.
Link: https://lkml.kernel.org/r/20250304211913.53574-8-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/damon/core.c | 34 ++++++++++++++++++++++++++++++++--
1 file changed, 32 insertions(+), 2 deletions(-)
--- a/mm/damon/core.c~mm-damon-core-set-damos_filter-default-allowance-behavior-based-on-installed-filters
+++ a/mm/damon/core.c
@@ -891,6 +891,32 @@ static int damos_commit_ops_filters(stru
return 0;
}
+/**
+ * damos_filters_default_reject() - decide whether to reject memory that didn't
+ * match with any given filter.
+ * @filters: Given DAMOS filters of a group.
+ */
+static bool damos_filters_default_reject(struct list_head *filters)
+{
+ struct damos_filter *last_filter;
+
+ if (list_empty(filters))
+ return false;
+ last_filter = list_last_entry(filters, struct damos_filter, list);
+ return last_filter->allow;
+}
+
+static void damos_set_filters_default_reject(struct damos *s)
+{
+ if (!list_empty(&s->ops_filters))
+ s->core_filters_default_reject = false;
+ else
+ s->core_filters_default_reject =
+ damos_filters_default_reject(&s->filters);
+ s->ops_filters_default_reject =
+ damos_filters_default_reject(&s->ops_filters);
+}
+
static int damos_commit_filters(struct damos *dst, struct damos *src)
{
int err;
@@ -898,7 +924,11 @@ static int damos_commit_filters(struct d
err = damos_commit_core_filters(dst, src);
if (err)
return err;
- return damos_commit_ops_filters(dst, src);
+ err = damos_commit_ops_filters(dst, src);
+ if (err)
+ return err;
+ damos_set_filters_default_reject(dst);
+ return 0;
}
static struct damos *damon_nth_scheme(int n, struct damon_ctx *ctx)
@@ -1580,7 +1610,7 @@ static bool damos_filter_out(struct damo
return !filter->allow;
}
}
- return false;
+ return s->core_filters_default_reject;
}
/*
_
Patches currently in -mm which might be from sj@kernel.org are
selftests-damon-damos_quota_goal-handle-minimum-quota-that-cannot-be-further-reduced.patch
selftests-damon-damos_quota-make-real-expectation-of-quota-exceeds.patch
selftests-damon-damon_nr_regions-set-ops-update-for-merge-results-check-to-100ms.patch
selftests-damon-damon_nr_regions-sort-collected-regiosn-before-checking-with-min-max-boundaries.patch
mm-damon-respect-core-layer-filters-allowance-decision-on-ops-layer.patch
mm-damon-core-initialize-damos-walk_completed-in-damon_new_scheme.patch
mm-madvise-split-out-mmap-locking-operations-for-madvise.patch
mm-madvise-split-out-madvise-input-validity-check.patch
mm-madvise-split-out-madvise-behavior-execution.patch
mm-madvise-remove-redundant-mmap_lock-operations-from-process_madvise.patch
mm-damon-avoid-applying-damos-action-to-same-entity-multiple-times.patch
mm-damon-core-unset-damos-walk_completed-after-confimed-set.patch
mm-damon-core-do-not-call-damos_walk_control-walk-if-walk-is-completed.patch
mm-damon-core-do-damos-walking-in-entire-regions-granularity.patch
mm-damon-introduce-damos-filter-type-hugepage_size-fix.patch
docs-mm-damon-design-fix-typo-on-damos-filters-usage-doc-link.patch
docs-mm-damon-design-document-hugepage_size-filter.patch
docs-damon-move-damos-filter-type-names-and-meaning-to-design-doc.patch
docs-mm-damon-design-clarify-handling-layer-based-filters-evaluation-sequence.patch
docs-mm-damon-design-categorize-damos-filter-types-based-on-handling-layer.patch
mm-damon-implement-a-new-damos-filter-type-for-unmapped-pages.patch
docs-mm-damon-design-document-unmapped-damos-filter-type.patch
mm-damon-add-data-structure-for-monitoring-intervals-auto-tuning.patch
mm-damon-core-implement-intervals-auto-tuning.patch
mm-damon-sysfs-implement-intervals-tuning-goal-directory.patch
mm-damon-sysfs-commit-intervals-tuning-goal.patch
mm-damon-sysfs-implement-a-command-to-update-auto-tuned-monitoring-intervals.patch
docs-mm-damon-design-document-for-intervals-auto-tuning.patch
docs-abi-damon-document-intervals-auto-tuning-abi.patch
docs-admin-guide-mm-damon-usage-add-intervals_goal-directory-on-the-hierarchy.patch
mm-damon-core-introduce-damos-ops_filters.patch
mm-damon-paddr-support-ops_filters.patch
mm-damon-core-support-committing-ops_filters.patch
mm-damon-core-put-ops-handled-filters-to-damos-ops_filters.patch
mm-damon-paddr-support-only-damos-ops_filters.patch
mm-damon-add-default-allow-reject-behavior-fields-to-struct-damos.patch
mm-damon-core-set-damos_filter-default-allowance-behavior-based-on-installed-filters.patch
mm-damon-paddr-respect-ops_filters_default_reject.patch
docs-mm-damon-design-update-for-changed-filter-default-behavior.patch
reply other threads:[~2025-03-04 23:19 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250304231914.08FE5C4CEE9@smtp.kernel.org \
--to=akpm@linux-foundation.org \
--cc=corbet@lwn.net \
--cc=mm-commits@vger.kernel.org \
--cc=sj@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.