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[79.242.59.245]) by smtp.gmail.com with ESMTPSA id l21sm2638372wmh.31.2021.08.31.07.53.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 31 Aug 2021 07:53:31 -0700 (PDT) Subject: Re: [RFC][PATCH] mm/page_isolation: tracing: trace all test_pages_isolated failures To: "George G. Davis" , Andrew Morton , "open list:MEMORY MANAGEMENT" , open list Cc: Eugeniu Rosca , "George G. Davis" References: <20210823202823.13765-1-george_davis@mentor.com> From: David Hildenbrand Organization: Red Hat Message-ID: <4f680b5a-9076-3ba4-caea-bdd6eafeb899@redhat.com> Date: Tue, 31 Aug 2021 16:53:31 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210823202823.13765-1-george_davis@mentor.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=QR+u74ZW; dmarc=pass (policy=none) header.from=redhat.com; spf=none (imf22.hostedemail.com: domain of david@redhat.com has no SPF policy when checking 170.10.133.124) smtp.mailfrom=david@redhat.com X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 98F001905 X-Stat-Signature: ryskfjodhjg98dyjk8zw41ngadx5ge3h X-HE-Tag: 1630421615-472245 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 23.08.21 22:28, George G. Davis wrote: > From: "George G. Davis" > > Some test_pages_isolated failure conditions don't include trace points. > For debugging issues caused by "pinned" pages, make sure to trace all > calls whether they succeed or fail. In this case, a failure case did not > result in a trace point. So add the missing failure case in > test_pages_isolated traces. In which setups did you actually run into these cases? -- Thanks, David / dhildenb