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 7839B35CB75; Fri, 9 Jan 2026 13:41:56 +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=1767966116; cv=none; b=V9blOh+rc+C3LpdhTMRc0NUORB8+fZafGAFvQiwQk0A/zsTbTXH3S/U7QDHjr7nH04yNWsWezEVoT9tTTS1xjVPDL+ojs+kTjUa386Rfr0oNdcJELBUUiUqgtjgUwZQlKHTJK2h9bCxxTxRCTViM0LZER0CaYiNZLHV2iPFKt/4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767966116; c=relaxed/simple; bh=85W2k/vZ6p+6iy0+yFWg6C8malR33X2ekz9QgywhdHg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=oqF3NcFhjdS6xYRu64tNTn+HJ6aK8o3fQd3Q7CL9BGtWUczLGYUjUQdk32du0G3fPHmoq6xDwdCQWgSkhTq0ZSRL6fr6pcS9+wFbBDxWyrmKlgo6Eg3SI9v9Hk2R4aIsF+RHgN2OT6hkSuvKsnqdiAYqGziKNdXK/xsPr678I/E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mCmf/qFA; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mCmf/qFA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 127F9C4CEF1; Fri, 9 Jan 2026 13:41:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767966116; bh=85W2k/vZ6p+6iy0+yFWg6C8malR33X2ekz9QgywhdHg=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=mCmf/qFAVz66FGjo+1VfRjKDgm9C2YWUh/58ThjZTg1c3qbTdFenCDdpXC5sul1xA NEinrrPqz1ENk859Qij7ccldBetl/K8nhPAZsHEI/WGyU17lEsKkQE3zj2J+gLMfwF Sjx1xESmbA9GzXyMj1Lfi/BjDSbn+P8bHM/5S4ETldvoBCPT9Wj23mwBe5hoj2wwY+ oK2l8L3c9w78ggaUMnaxi18GaJAgToAzNL1Uc0Vin/Kif3762G/gwAh3MhdZAhLX1T jv83fvYBoYK9v3r0KqOR+CdrHj2mmE34RZvYEfa3JqDPL7lRXm1uasdfX7/glbDzuf r+Z1asmNqwGrQ== Message-ID: <3cd08409-8c6b-42ab-97d5-e4440efe4f6a@kernel.org> Date: Fri, 9 Jan 2026 14:41:51 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] selftests/mm: run_vmtests.sh: fix relative path handling To: sun jian , Andrew Morton Cc: Shuah Khan , linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20260108031604.12379-1-sun.jian.kdev@gmail.com> <20260108132851.bb6b7813277a5b40ba3aec8f@linux-foundation.org> From: "David Hildenbrand (Red Hat)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 1/9/26 03:08, sun jian wrote: >> hm, why? Is that a thing people actually do? >> >> Is anyone going to actually test this feature? > > Yes — invoking selftests directly from the kernel root can easily happen in > practice, for example:: > > sudo tools/testing/selftests/mm/run_vmtests.sh > > This currently results in false failures because relative paths being resolved > against the caller's cwd instead of the script directory. >> >> Alternatively we could check that we're in the correct directory and >> error out if not. > > That would also be reasonable, but I slightly prefer auto-cd because it > avoids an easy invocation pitfall and makes the runner more robust for > wrappers/CI > where the cwd is not stable. That said, I'm happy to switch to a fail-fast cwd > check if you prefer the behavior. I'd prefer to just fail for the case that we never supported instead of adding support for it. -- Cheers David