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From: Sarthak Sharma <sarthak.sharma@arm.com>
To: Hemanth Selam <hemanth.selam@gmail.com>,
	Tejun Heo <tj@kernel.org>, Johannes Weiner <hannes@cmpxchg.org>,
	Michal Koutny <mkoutny@suse.com>, Shuah Khan <shuah@kernel.org>
Cc: Guopeng Zhang <zhangguopeng@kylinos.cn>,
	Sebastian Chlad <sebastian.chlad@suse.com>,
	Waiman Long <longman@redhat.com>,
	Michal Hocko <mhocko@kernel.org>,
	Roman Gushchin <roman.gushchin@linux.dev>,
	Shakeel Butt <shakeel.butt@linux.dev>,
	Yosry Ahmed <yosry@kernel.org>, Nhat Pham <nphamcs@gmail.com>,
	cgroups@vger.kernel.org, linux-kselftest@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] selftests/cgroup: set the test plan after the setup checks
Date: Wed, 19 Aug 2026 17:39:54 +0530	[thread overview]
Message-ID: <3d3a0b45-c59e-4f73-846f-fe741ec8f65d@arm.com> (raw)
In-Reply-To: <20260819083600.1351711-1-hemanth.selam@gmail.com>



On 8/19/26 2:06 PM, Hemanth Selam wrote:
> The cgroup tests announce their plan before checking whether cgroup v2 is
> available, so on a host without it they promise a number of results and
> then skip out after the first one:
> 
> 	TAP version 13
> 	1..3
> 	ok 1 # SKIP cgroup v2 isn't mounted
> 	# Planned tests != run tests (3 != 1)
> 	# Totals: pass:0 fail:0 xfail:0 xpass:0 skip:1 error:0
> 
> ksft_exit_skip() can only emit a well formed "1..0 # SKIP" line while no
> plan has been printed, as the comment above it in kselftest.h points out.
> 
> Move ksft_set_plan() below the setup checks that can skip, so that a
> skipped run reports:
> 
> 	TAP version 13
> 	1..0 # SKIP cgroup v2 isn't mounted
> 
> Several of the tests skip more than once while setting up, for a missing
> or unwritable controller as well, so the plan goes after the last of
> them.  test_core joins its two setup paths at the post_v2_setup label and
> sets the plan there.
> 
> Reporting each planned test as skipped instead would keep the plan where
> it is, but the setup failures here mean the whole test cannot run rather
> than its individual cases being skipped, which is what "1..0 # SKIP" is
> for.
> 
> Fixes: 1dc830ee4c15 ("selftests/cgroup: conform test to KTAP format output")
> Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com>
> ---
LGTM, so:

Reviewed-by: Sarthak Sharma <sarthak.sharma@arm.com>

  reply	other threads:[~2026-08-19 12:10 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-19  8:36 [PATCH] selftests/cgroup: set the test plan after the setup checks Hemanth Selam
2026-08-19 12:09 ` Sarthak Sharma [this message]
2026-08-19 20:10 ` Tejun Heo

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