From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 118611991D2 for ; Fri, 4 Jul 2025 22:36:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751668569; cv=none; b=gNlJONZwECCbXrnZg/8Nq8v87N6MKMPDTgS2CBb6TVk87lO5a1cw0a4KDoyBjvgFzRr1BP6OeA7ywD88xmOf1E7TpzPGqO8FuyhVJsiexDxD6y28gmibC2c6IlRmoTvgd9s55KggacvCK5x8JAz0BjJDoKsEFG+dotT7kfJQTuk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751668569; c=relaxed/simple; bh=03eGHD+xJ7HP1naImms1Ox46NN6xpikMg4//rw6kyQQ=; h=Date:To:From:Subject:Message-Id; b=gmcnS4PYTjVUN4ls4LEbQeUiUAPtpF0Nq1Jg/x65sSq3a4tQMDEJHTZDncGLNWSROSQJI6i5dOT4HCOOadSIqKUEDYraXsGjqraDNE83myWcsYzPaWF9jtl8VAzEGb5qyqhstn0tmQ3XhWBgH8YL0V0I1MzKIBwS226psQHX+B8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=jF5g3c2R; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="jF5g3c2R" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 81184C4CEE3; Fri, 4 Jul 2025 22:36:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1751668568; bh=03eGHD+xJ7HP1naImms1Ox46NN6xpikMg4//rw6kyQQ=; h=Date:To:From:Subject:From; b=jF5g3c2RWMUqMqWn5uWWT9uAGUcFlaxc7IgpksOwD2P6maGYlJ6MBjU7cycUedrPB Ln2ZCniIktsESV4MT+nUtzjeM7nWUB/WgOdTKnjabecTxGnIfxNPvH0KW3bAVxTuuq QEh52F9aBb3h5AyYP/ODsvThXUo81Hw3YmlC9IHQ= Date: Fri, 04 Jul 2025 15:36:08 -0700 To: mm-commits@vger.kernel.org,rostedt@goodmis.org,mhiramat@kernel.org,mathieu.desnoyers@efficios.com,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-damon-add-trace-event-for-effective-size-quota.patch added to mm-new branch Message-Id: <20250704223608.81184C4CEE3@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/damon: add trace event for effective size quota has been added to the -mm mm-new branch. Its filename is mm-damon-add-trace-event-for-effective-size-quota.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-add-trace-event-for-effective-size-quota.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. 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 Subject: mm/damon: add trace event for effective size quota Date: Fri, 4 Jul 2025 15:14:08 -0700 Aim-oriented DAMOS quota auto-tuning is an important and recommended feature for DAMOS users. Add a trace event for the observability of the tuned quota and tuning itself. Link: https://lkml.kernel.org/r/20250704221408.38510-3-sj@kernel.org Signed-off-by: SeongJae Park Cc: "Masami Hiramatsu (Google)" Cc: Mathieu Desnoyers Cc: Steven Rostedt Signed-off-by: Andrew Morton --- include/trace/events/damon.h | 26 ++++++++++++++++++++++++++ mm/damon/core.c | 20 +++++++++++++++++++- 2 files changed, 45 insertions(+), 1 deletion(-) --- a/include/trace/events/damon.h~mm-damon-add-trace-event-for-effective-size-quota +++ a/include/trace/events/damon.h @@ -9,6 +9,32 @@ #include #include +TRACE_EVENT_CONDITION(damos_esz, + + TP_PROTO(unsigned int context_idx, unsigned int scheme_idx, + unsigned long esz, bool do_trace), + + TP_ARGS(context_idx, scheme_idx, esz, do_trace), + + TP_CONDITION(do_trace), + + TP_STRUCT__entry( + __field(unsigned int, context_idx) + __field(unsigned int, scheme_idx) + __field(unsigned long, esz) + ), + + TP_fast_assign( + __entry->context_idx = context_idx; + __entry->scheme_idx = scheme_idx; + __entry->esz = esz; + ), + + TP_printk("ctx_idx=%u scheme_idx=%u esz=%lu", + __entry->context_idx, __entry->scheme_idx, + __entry->esz) +); + TRACE_EVENT_CONDITION(damos_before_apply, TP_PROTO(unsigned int context_idx, unsigned int scheme_idx, --- a/mm/damon/core.c~mm-damon-add-trace-event-for-effective-size-quota +++ a/mm/damon/core.c @@ -2011,12 +2011,26 @@ static void damos_set_effective_quota(st quota->esz = esz; } +static void damos_trace_esz(struct damon_ctx *c, struct damos *s, + struct damos_quota *quota) +{ + unsigned int cidx = 0, sidx; + struct damos *siter; + + damon_for_each_scheme(siter, c) { + if (siter == s) + break; + sidx++; + } + trace_damos_esz(cidx, sidx, quota->esz, true); +} + static void damos_adjust_quota(struct damon_ctx *c, struct damos *s) { struct damos_quota *quota = &s->quota; struct damon_target *t; struct damon_region *r; - unsigned long cumulated_sz; + unsigned long cumulated_sz, cached_esz; unsigned int score, max_score = 0; if (!quota->ms && !quota->sz && list_empty("a->goals)) @@ -2030,7 +2044,11 @@ static void damos_adjust_quota(struct da quota->total_charged_sz += quota->charged_sz; quota->charged_from = jiffies; quota->charged_sz = 0; + if (trace_damos_esz_enabled()) + cached_esz = quota->esz; damos_set_effective_quota(quota); + if (trace_damos_esz_enabled() && quota->esz != cached_esz) + damos_trace_esz(c, s, quota); } if (!c->ops.get_scheme_score) _ Patches currently in -mm which might be from sj@kernel.org are mm-damon-core-handle-damon_call_control-as-normal-under-kdmond-deactivation.patch mm-damon-introduce-damon_stat-module.patch mm-damon-introduce-damon_stat-module-fix.patch mm-damon-stat-calculate-and-expose-estimated-memory-bandwidth.patch mm-damon-stat-calculate-and-expose-idle-time-percentiles.patch docs-admin-guide-mm-damon-add-damon_stat-usage-document.patch mm-damon-paddr-use-alloc_migartion_target-with-no-migration-fallback-nodemask.patch revert-mm-rename-alloc_demote_folio-to-alloc_migrate_folio.patch revert-mm-make-alloc_demote_folio-externally-invokable-for-migration.patch selftets-damon-add-a-test-for-memcg_path-leak.patch mm-damon-sysfs-schemes-decouple-from-damos_quota_goal_metric.patch mm-damon-sysfs-schemes-decouple-from-damos_action.patch mm-damon-sysfs-schemes-decouple-from-damos_wmark_metric.patch mm-damon-sysfs-schemes-decouple-from-damos_filter_type.patch mm-damon-sysfs-decouple-from-damon_ops_id.patch selftests-damon-add-drgn-script-for-extracting-damon-status.patch selftests-damon-_damon_sysfs-set-kdamondpid-in-start.patch selftests-damon-add-python-and-drgn-based-damon-sysfs-test.patch selftests-damon-sysfspy-test-monitoring-attribute-parameters.patch selftests-damon-sysfspy-test-adaptive-targets-parameter.patch selftests-damon-sysfspy-test-damos-schemes-parameters-setup.patch mm-damon-add-trace-event-for-auto-tuned-monitoring-intervals.patch mm-damon-add-trace-event-for-effective-size-quota.patch