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From: SeongJae Park <sj@kernel.org>
Cc: SeongJae Park <sj@kernel.org>,
	damon@lists.linux.dev, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org
Subject: [RFC PATCH v3 26/37] mm/damon: extend damon_access_report for access-origin thread info
Date: Sun,  7 Dec 2025 22:29:30 -0800	[thread overview]
Message-ID: <20251208062943.68824-27-sj@kernel.org> (raw)
In-Reply-To: <20251208062943.68824-1-sj@kernel.org>

The access reporter might be able to know which thread has made the
reporting access.  Extend the report data structure for the information.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 include/linux/damon.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/damon.h b/include/linux/damon.h
index aff34dce7c7c..80332bb2b73c 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -116,6 +116,7 @@ struct damon_target {
  * @addr:		The start address of the accessed address range.
  * @size:		The size of the accessed address range.
  * @cpu:		The id of the CPU that made the access.
+ * @tid:		The task id of the task that made the access.
  *
  * Any DAMON API callers that notified access events can report the information
  * to DAMON using damon_report_access().  This struct contains the reporting
@@ -125,6 +126,7 @@ struct damon_access_report {
 	unsigned long addr;
 	unsigned long size;
 	unsigned int cpu;
+	pid_t tid;
 /* private: */
 	unsigned long report_jiffies;	/* when this report is made */
 };
-- 
2.47.3


  parent reply	other threads:[~2025-12-08  6:30 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-08  6:29 [RFC PATCH v3 00/37] mm/damon: introduce per-CPUs/threads/write/read monitoring SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 01/37] mm/damon/core: implement damon_report_access() SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 02/37] mm/damon: define struct damon_sample_control SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 03/37] mm/damon/core: commit damon_sample_control SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 04/37] mm/damon/core: implement damon_report_page_fault() SeongJae Park
2025-12-12 12:46   ` JaeJoon Jung
2025-12-12 22:47     ` SeongJae Park
2025-12-13  0:31       ` JaeJoon Jung
2025-12-13  0:56         ` SeongJae Park
2025-12-13  1:37           ` JaeJoon Jung
2025-12-08  6:29 ` [RFC PATCH v3 05/37] mm/{mprotect,memory}: (no upstream-aimed hack) implement MM_CP_DAMON SeongJae Park
2025-12-08 11:19   ` David Hildenbrand (Red Hat)
2025-12-09  4:56     ` SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 06/37] mm/damon/paddr: support page fault access check primitive SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 07/37] mm/damon/core: apply access reports to high level snapshot SeongJae Park
2025-12-12 13:20   ` JaeJoon Jung
2025-12-12 23:11     ` SeongJae Park
2025-12-13  1:10       ` JaeJoon Jung
2025-12-13  3:21         ` SeongJae Park
2025-12-13  4:09           ` JaeJoon Jung
2025-12-13  5:53             ` SeongJae Park
2025-12-13  9:17               ` SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 08/37] mm/damon/sysfs: implement monitoring_attrs/sample/ dir SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 09/37] mm/damon/sysfs: implement sample/primitives/ dir SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 10/37] mm/damon/sysfs: connect primitives directory with core SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 11/37] Docs/mm/damon/design: document page fault sampling primitive SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 12/37] Docs/admin-guide/mm/damon/usage: document sample primitives dir SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 13/37] mm/damon: extend damon_access_report for origin CPU reporting SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 14/37] mm/damon/core: report access origin cpu of page faults SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 15/37] mm/damon: implement sample filter data structure for cpus-only monitoring SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 16/37] mm/damon/core: implement damon_sample_filter manipulations SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 17/37] mm/damon/core: commit damon_sample_filters SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 18/37] mm/damon/core: apply sample filter to access reports SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 19/37] mm/damon/sysfs: implement sample/filters/ directory SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 20/37] mm/damon/sysfs: implement sample filter directory SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 21/37] mm/damon/sysfs: implement type, matching, allow files under sample filter dir SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 22/37] mm/damon/sysfs: implement cpumask file " SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 23/37] mm/damon/sysfs: connect sample filters with core layer SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 24/37] Docs/mm/damon/design: document sample filters SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 25/37] Docs/admin-guide/mm/damon/usage: document sample filters dir SeongJae Park
2025-12-08  6:29 ` SeongJae Park [this message]
2025-12-08  6:29 ` [RFC PATCH v3 27/37] mm/damon/core: report access-generated thread id of the fault event SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 28/37] mm/damon: extend damon_sample_filter for threads SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 29/37] mm/damon/core: support threads type sample filter SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 30/37] mm/damon/sysfs: support thread based access sample filtering SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 31/37] Docs/mm/damon/design: document threads type sample filter SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 32/37] Docs/admin-guide/mm/damon/usage: document tids_arr file SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 33/37] mm/damon: support reporting write access SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 34/37] mm/damon/core: report whether the page fault was for writing SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 35/37] mm/damon/core: support write access sample filter SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 36/37] mm/damon/sysfs: support write-type " SeongJae Park
2025-12-08  6:29 ` [RFC PATCH v3 37/37] Docs/mm/damon/design: document write access sample filter type SeongJae Park

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