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Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pcrUv-00F2M2-Of; Thu, 16 Mar 2023 17:34:41 +0000 Date: Thu, 16 Mar 2023 17:34:41 +0000 From: Matthew Wilcox To: Jiri Olsa Cc: Alexei Starovoitov , Andrii Nakryiko , Hao Luo , Andrew Morton , Alexander Viro , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , bpf@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-perf-users@vger.kernel.org, Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Daniel Borkmann , Namhyung Kim , Dave Chinner Subject: Re: [PATCHv3 bpf-next 0/9] mm/bpf/perf: Store build id in file object Message-ID: References: <20230316170149.4106586-1-jolsa@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230316170149.4106586-1-jolsa@kernel.org> X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 1DB6780013 X-Stat-Signature: h399fxnwc3e3b5fmn1ogzgfkwmt9y5hh X-Rspam-User: X-HE-Tag: 1678988092-237359 X-HE-Meta: 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 sDkhYH2i Ve6OYYou0HrNSKDc2Jl/cWxvFi7SCoEfDJkfd6ltHnunOBqpSrK6uGzaBFEVAZm9INTHQIfjtFvHop+zwnHKpbfzdv3ISaDjX5/WLba5rf2xJ95AeTbaqS1H5CrxfG2yejqPvOavVGO2PbTH9JAXJvri8A3v9Ovyxlio5Och024Ecop1coxY/69YvFy2Awyz46ecugNQubyi4bwXPJa5u5fXH9+dmXlvgza01 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 Thu, Mar 16, 2023 at 06:01:40PM +0100, Jiri Olsa wrote: > hi, > this patchset adds build id object pointer to struct file object. > > We have several use cases for build id to be used in BPF programs > [2][3]. Yes, you have use cases, but you never answered the question I asked: Is this going to be enabled by every distro kernel, or is it for special use-cases where only people doing a very specialised thing who are willing to build their own kernels will use it? Saying "hubble/tetragon" doesn't answer that question. Maybe it does to you, but I have no idea what that software is. Put it another way: how does this make *MY* life better? Literally me. How will it affect my life?