diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-kernel-mm-damon')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-kernel-mm-damon | 120 |
1 files changed, 112 insertions, 8 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon index bfa5b8288d8d..5697ab154c1f 100644 --- a/Documentation/ABI/testing/sysfs-kernel-mm-damon +++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon @@ -34,7 +34,9 @@ Description: Writing 'on' or 'off' to this file makes the kdamond starts or kdamond. Writing 'update_schemes_tried_bytes' to the file updates only '.../tried_regions/total_bytes' files of this kdamond. Writing 'clear_schemes_tried_regions' to the file - removes contents of the 'tried_regions' directory. + removes contents of the 'tried_regions' directory. Writing + 'update_schemes_effective_quotas' to the file updates + '.../quotas/effective_bytes' files of this kdamond. What: /sys/kernel/mm/damon/admin/kdamonds/<K>/pid Date: Mar 2022 @@ -89,6 +91,36 @@ Description: Writing a value to this file sets the update interval of the DAMON context in microseconds as the value. Reading this file returns the value. +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intrvals_goal/access_bp +Date: Feb 2025 +Contact: SeongJae Park <sj@kernel.org> +Description: Writing a value to this file sets the monitoring intervals + auto-tuning target DAMON-observed access events ratio within + the given time interval (aggrs in same directory), in bp + (1/10,000). Reading this file returns the value. + +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intrvals_goal/aggrs +Date: Feb 2025 +Contact: SeongJae Park <sj@kernel.org> +Description: Writing a value to this file sets the time interval to achieve + the monitoring intervals auto-tuning target DAMON-observed + access events ratio (access_bp in same directory) within. + Reading this file returns the value. + +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intrvals_goal/min_sample_us +Date: Feb 2025 +Contact: SeongJae Park <sj@kernel.org> +Description: Writing a value to this file sets the minimum value of + auto-tuned sampling interval in microseconds. Reading this + file returns the value. + +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/intervals/intrvals_goal/max_sample_us +Date: Feb 2025 +Contact: SeongJae Park <sj@kernel.org> +Description: Writing a value to this file sets the maximum value of + auto-tuned sampling interval in microseconds. Reading this + file returns the value. + What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/monitoring_attrs/nr_regions/min WDate: Mar 2022 @@ -153,6 +185,12 @@ Contact: SeongJae Park <sj@kernel.org> Description: Writing to and reading from this file sets and gets the action of the scheme. +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/target_nid +Date: Jun 2024 +Contact: SeongJae Park <sj@kernel.org> +Description: Action's target NUMA node id. Supported by only relevant + actions. + What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/apply_interval_us Date: Sep 2023 Contact: SeongJae Park <sj@kernel.org> @@ -208,6 +246,12 @@ Contact: SeongJae Park <sj@kernel.org> Description: Writing to and reading from this file sets and gets the size quota of the scheme in bytes. +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/effective_bytes +Date: Feb 2024 +Contact: SeongJae Park <sj@kernel.org> +Description: Reading from this file gets the effective size quota of the + scheme in bytes, which adjusted for the time quota and goals. + What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/reset_interval_ms Date: Mar 2022 Contact: SeongJae Park <sj@kernel.org> @@ -221,6 +265,12 @@ Description: Writing a number 'N' to this file creates the number of directories for setting automatic tuning of the scheme's aggressiveness named '0' to 'N-1' under the goals/ directory. +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/goals/<G>/target_metric +Date: Feb 2024 +Contact: SeongJae Park <sj@kernel.org> +Description: Writing to and reading from this file sets and gets the quota + auto-tuning goal metric. + What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/goals/<G>/target_value Date: Nov 2023 Contact: SeongJae Park <sj@kernel.org> @@ -233,6 +283,12 @@ Contact: SeongJae Park <sj@kernel.org> Description: Writing to and reading from this file sets and gets the current value of the goal metric. +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/goals/<G>/nid +Date: Apr 2025 +Contact: SeongJae Park <sj@kernel.org> +Description: Writing to and reading from this file sets and gets the nid + parameter of the goal. + What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/quotas/weights/sz_permil Date: Mar 2022 Contact: SeongJae Park <sj@kernel.org> @@ -300,9 +356,9 @@ Date: Dec 2022 Contact: SeongJae Park <sj@kernel.org> Description: Writing to and reading from this file sets and gets the type of the memory of the interest. 'anon' for anonymous pages, - 'memcg' for specific memory cgroup, 'addr' for address range - (an open-ended interval), or 'target' for DAMON monitoring - target can be written and read. + 'memcg' for specific memory cgroup, 'young' for young pages, + 'addr' for address range (an open-ended interval), or 'target' + for DAMON monitoring target can be written and read. What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/memcg_path Date: Dec 2022 @@ -325,6 +381,20 @@ Description: If 'addr' is written to the 'type' file, writing to or reading from this file sets or gets the end address of the address range for the filter. +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/min +Date: Feb 2025 +Contact: SeongJae Park <sj@kernel.org> +Description: If 'hugepage_size' is written to the 'type' file, writing to + or reading from this file sets or gets the minimum size of the + hugepage for the filter. + +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/max +Date: Feb 2025 +Contact: SeongJae Park <sj@kernel.org> +Description: If 'hugepage_size' is written to the 'type' file, writing to + or reading from this file sets or gets the maximum size of the + hugepage for the filter. + What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/target_idx Date: Dec 2022 Contact: SeongJae Park <sj@kernel.org> @@ -335,10 +405,31 @@ Description: If 'target' is written to the 'type' file, writing to or What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/matching Date: Dec 2022 Contact: SeongJae Park <sj@kernel.org> -Description: Writing 'Y' or 'N' to this file sets whether to filter out - pages that do or do not match to the 'type' and 'memcg_path', - respectively. Filter out means the action of the scheme will - not be applied to. +Description: Writing 'Y' or 'N' to this file sets whether the filter is for + the memory of the 'type', or all except the 'type'. + +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters/<F>/allow +Date: Jan 2025 +Contact: SeongJae Park <sj@kernel.org> +Description: Writing 'Y' or 'N' to this file sets whether to allow or reject + applying the scheme's action to the memory that satisfies the + 'type' and the 'matching' of the directory. + +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/core_filters +Date: Feb 2025 +Contact: SeongJae Park <sj@kernel.org> +Description: Directory for DAMON core layer-handled DAMOS filters. Files + under this directory works same to those of + /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters + directory. + +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/ops_filters +Date: Feb 2025 +Contact: SeongJae Park <sj@kernel.org> +Description: Directory for DAMON operations set layer-handled DAMOS filters. + Files under this directory works same to those of + /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/filters + directory. What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/nr_tried Date: Mar 2022 @@ -364,6 +455,12 @@ Contact: SeongJae Park <sj@kernel.org> Description: Reading this file returns the total size of regions that the action of the scheme has successfully applied in bytes. +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/sz_ops_filter_passed +Date: Dec 2024 +Contact: SeongJae Park <sj@kernel.org> +Description: Reading this file returns the total size of memory that passed + DAMON operations layer-handled filters of the scheme in bytes. + What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/qt_exceeds Date: Mar 2022 Contact: SeongJae Park <sj@kernel.org> @@ -404,3 +501,10 @@ Contact: SeongJae Park <sj@kernel.org> Description: Reading this file returns the 'age' of a memory region that corresponding DAMON-based Operation Scheme's action has tried to be applied. + +What: /sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/<R>/sz_filter_passed +Date: Dec 2024 +Contact: SeongJae Park <sj@kernel.org> +Description: Reading this file returns the size of the memory in the region + that passed DAMON operations layer-handled filters of the + scheme in bytes. |