linux-kernel - [PATCH 0/4] selftests/mm/uffd: refactor global variables

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Message-Id: <20250501163827.2598-1-ujwal.kundur@gmail.com>
Date: Thu,  1 May 2025 22:08:23 +0530
From: Ujwal Kundur <ujwal.kundur@...il.com>
To: akpm@...ux-foundation.org,
	peterx@...hat.com,
	shuah@...nel.org
Cc: linux-mm@...ck.org,
	linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Ujwal Kundur <ujwal.kundur@...il.com>
Subject: [PATCH 0/4] selftests/mm/uffd: refactor global variables

This patchset refactors non-composite global variables into a common
struct that can be initialized and passed around per-test instead of
relying on the presence of global variables.

This allows:
- Better encapsulation
- Debugging becomes easier -- local variable state can be viewed per
  stack frame, and we can more easily reason about the variable
  mutations

Patch 1 needs to be applied first and can be followed by any of the
other patches.
I've ensured that the tests are passing locally (or atleast have the
same output as the code on master).

Ujwal Kundur (4):
  selftests/mm/uffd: Refactor non-composite global vars into struct
  selftests/mm/uffd: Swap global vars with global test options
  selftests/mm/uffd: Swap global variables with global test opts
  selftests/mm/uffd: Swap global variables with global test opts

 tools/testing/selftests/mm/uffd-common.c     | 269 +++++-----
 tools/testing/selftests/mm/uffd-common.h     |  78 +--
 tools/testing/selftests/mm/uffd-stress.c     | 226 ++++----
 tools/testing/selftests/mm/uffd-unit-tests.c | 523 ++++++++++---------
 tools/testing/selftests/mm/uffd-wp-mremap.c  |  23 +-
 5 files changed, 591 insertions(+), 528 deletions(-)

-- 
2.20.1