diff options
Diffstat (limited to 'mm/damon/sysfs.c')
| -rw-r--r-- | mm/damon/sysfs.c | 54 |
1 files changed, 50 insertions, 4 deletions
diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 1f891e18b4ee1..6fee383bc0c54 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -1020,6 +1020,11 @@ enum damon_sysfs_cmd { */ DAMON_SYSFS_CMD_CLEAR_SCHEMES_TRIED_REGIONS, /* + * @DAMON_SYSFS_CMD_UPDATE_SCHEMES_EFFECTIVE_QUOTAS: Update the + * effective size quota of the scheme in bytes. + */ + DAMON_SYSFS_CMD_UPDATE_SCHEMES_EFFECTIVE_QUOTAS, + /* * @NR_DAMON_SYSFS_CMDS: Total number of DAMON sysfs commands. */ NR_DAMON_SYSFS_CMDS, @@ -1035,6 +1040,7 @@ static const char * const damon_sysfs_cmd_strs[] = { "update_schemes_tried_bytes", "update_schemes_tried_regions", "clear_schemes_tried_regions", + "update_schemes_effective_quotas", }; /* @@ -1371,19 +1377,43 @@ static int damon_sysfs_commit_schemes_quota_goals( ctx = sysfs_kdamond->damon_ctx; sysfs_ctx = sysfs_kdamond->contexts->contexts_arr[0]; - damos_sysfs_set_quota_scores(sysfs_ctx->schemes, ctx); + return damos_sysfs_set_quota_scores(sysfs_ctx->schemes, ctx); +} + +/* + * damon_sysfs_upd_schemes_effective_quotas() - Update schemes effective quotas + * sysfs files. + * @kdamond: The kobject wrapper that associated to the kdamond thread. + * + * This function reads the schemes' effective quotas of specific kdamond and + * update the related values for sysfs files. This function should be called + * from DAMON callbacks while holding ``damon_syfs_lock``, to safely access the + * DAMON contexts-internal data and DAMON sysfs variables. + */ +static int damon_sysfs_upd_schemes_effective_quotas( + struct damon_sysfs_kdamond *kdamond) +{ + struct damon_ctx *ctx = kdamond->damon_ctx; + + if (!ctx) + return -EINVAL; + damos_sysfs_update_effective_quotas( + kdamond->contexts->contexts_arr[0]->schemes, ctx); return 0; } + /* * damon_sysfs_cmd_request_callback() - DAMON callback for handling requests. * @c: The DAMON context of the callback. * @active: Whether @c is not deactivated due to watermarks. + * @after_aggr: Whether this is called from after_aggregation() callback. * * This function is periodically called back from the kdamond thread for @c. * Then, it checks if there is a waiting DAMON sysfs request and handles it. */ -static int damon_sysfs_cmd_request_callback(struct damon_ctx *c, bool active) +static int damon_sysfs_cmd_request_callback(struct damon_ctx *c, bool active, + bool after_aggregation) { struct damon_sysfs_kdamond *kdamond; bool total_bytes_only = false; @@ -1401,6 +1431,8 @@ static int damon_sysfs_cmd_request_callback(struct damon_ctx *c, bool active) err = damon_sysfs_upd_schemes_stats(kdamond); break; case DAMON_SYSFS_CMD_COMMIT: + if (!after_aggregation) + goto out; err = damon_sysfs_commit_input(kdamond); break; case DAMON_SYSFS_CMD_COMMIT_SCHEMES_QUOTA_GOALS: @@ -1418,6 +1450,7 @@ static int damon_sysfs_cmd_request_callback(struct damon_ctx *c, bool active) goto keep_lock_out; } } else { + damos_sysfs_mark_finished_regions_updates(c); /* * Continue regions updating if DAMON is till * active and the update for all schemes is not @@ -1432,6 +1465,9 @@ static int damon_sysfs_cmd_request_callback(struct damon_ctx *c, bool active) case DAMON_SYSFS_CMD_CLEAR_SCHEMES_TRIED_REGIONS: err = damon_sysfs_clear_schemes_regions(kdamond); break; + case DAMON_SYSFS_CMD_UPDATE_SCHEMES_EFFECTIVE_QUOTAS: + err = damon_sysfs_upd_schemes_effective_quotas(kdamond); + break; default: break; } @@ -1450,7 +1486,16 @@ static int damon_sysfs_after_wmarks_check(struct damon_ctx *c) * after_wmarks_check() is called back while the context is deactivated * by watermarks. */ - return damon_sysfs_cmd_request_callback(c, false); + return damon_sysfs_cmd_request_callback(c, false, false); +} + +static int damon_sysfs_after_sampling(struct damon_ctx *c) +{ + /* + * after_sampling() is called back only while the context is not + * deactivated by watermarks. + */ + return damon_sysfs_cmd_request_callback(c, true, false); } static int damon_sysfs_after_aggregation(struct damon_ctx *c) @@ -1459,7 +1504,7 @@ static int damon_sysfs_after_aggregation(struct damon_ctx *c) * after_aggregation() is called back only while the context is not * deactivated by watermarks. */ - return damon_sysfs_cmd_request_callback(c, true); + return damon_sysfs_cmd_request_callback(c, true, true); } static struct damon_ctx *damon_sysfs_build_ctx( @@ -1478,6 +1523,7 @@ static struct damon_ctx *damon_sysfs_build_ctx( } ctx->callback.after_wmarks_check = damon_sysfs_after_wmarks_check; + ctx->callback.after_sampling = damon_sysfs_after_sampling; ctx->callback.after_aggregation = damon_sysfs_after_aggregation; ctx->callback.before_terminate = damon_sysfs_before_terminate; return ctx; |