linux-kernel - [PATCH v2 0/3] Add tracepoints for lowmem reserves, watermarks and totalreserve

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Message-ID: <20250308034606.2036033-1-liumartin@google.com>
Date: Sat,  8 Mar 2025 03:45:59 +0000
From: Martin Liu <liumartin@...gle.com>
To: Steven Rostedt <rostedt@...dmis.org>, Masami Hiramatsu <mhiramat@...nel.org>, 
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Andrew Morton <akpm@...ux-foundation.org>
Cc: Martin Liu <liumartin@...gle.com>, linux-kernel@...r.kernel.org, 
	linux-trace-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH v2 0/3] Add tracepoints for lowmem reserves, watermarks and totalreserve_pages

This patchset introduces tracepoints to track changes in the lowmem
reserves, watermarks and totalreserve_pages. This helps to track
the exact timing of such changes and understand their relation to
reclaim activities.

The tracepoints added are:

mm_setup_per_zone_lowmem_reserve
mm_setup_per_zone_wmarks
mm_calculate_totalreserve_pagesi

Changes in V2:
  Fix coding format error. Feedback from kaleshsingh@...gle.com.

Martin Liu (3):
  mm/page_alloc: Add trace event for per-zone watermark setup
  mm/page_alloc: Add trace event for per-zone lowmem reserve setup
  mm/page_alloc: Add trace event for totalreserve_pages calculation

 include/trace/events/kmem.h | 78 +++++++++++++++++++++++++++++++++++++
 mm/page_alloc.c             |  4 ++
 2 files changed, 82 insertions(+)

-- 
2.49.0.rc0.332.g42c0ae87b1-goog