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772c15e5ad
When there are huge number of DAMON regions that specific scheme actions
are tried to be applied, directories and files under 'tried_regions'
scheme directory could waste some memory. Add another special input
keyword ('clear_schemes_tried_regions') for 'state' file of each kdamond
sysfs directory that can be used for cleanup of the 'tried_regions'
sub-directories.
[sj@kernel.org: skip regions clearing if the scheme directory was removed]
Link: https://lkml.kernel.org/r/20221114182954.4745-3-sj@kernel.org
Link: https://lkml.kernel.org/r/20221101220328.95765-6-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Common Primitives for DAMON Sysfs Interface
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*
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* Author: SeongJae Park <sj@kernel.org>
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*/
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#include <linux/damon.h>
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#include <linux/kobject.h>
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extern struct mutex damon_sysfs_lock;
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struct damon_sysfs_ul_range {
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struct kobject kobj;
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unsigned long min;
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unsigned long max;
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};
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struct damon_sysfs_ul_range *damon_sysfs_ul_range_alloc(
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unsigned long min,
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unsigned long max);
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void damon_sysfs_ul_range_release(struct kobject *kobj);
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extern struct kobj_type damon_sysfs_ul_range_ktype;
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/*
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* schemes directory
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*/
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struct damon_sysfs_schemes {
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struct kobject kobj;
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struct damon_sysfs_scheme **schemes_arr;
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int nr;
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};
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struct damon_sysfs_schemes *damon_sysfs_schemes_alloc(void);
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void damon_sysfs_schemes_rm_dirs(struct damon_sysfs_schemes *schemes);
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extern struct kobj_type damon_sysfs_schemes_ktype;
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int damon_sysfs_set_schemes(struct damon_ctx *ctx,
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struct damon_sysfs_schemes *sysfs_schemes);
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void damon_sysfs_schemes_update_stats(
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struct damon_sysfs_schemes *sysfs_schemes,
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struct damon_ctx *ctx);
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int damon_sysfs_schemes_update_regions_start(
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struct damon_sysfs_schemes *sysfs_schemes,
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struct damon_ctx *ctx);
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int damon_sysfs_schemes_update_regions_stop(struct damon_ctx *ctx);
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int damon_sysfs_schemes_clear_regions(
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struct damon_sysfs_schemes *sysfs_schemes,
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struct damon_ctx *ctx);
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