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b=aBRUWNLHRfZeQXMu7YAN3oI6Uslc8DdiOozdXsGOLr5vSQVyQBykU8uvU1q668mLY TMtblbKYRnL24mIoJatHJ2AZiGKghQBFG/eTgfk4sIjgVRqe8TfyJ/xk2vwnX1WnHA wLA6aGH16h/F9Bis7foCon/OkCF9RPqyCsY9TCjStwVdBSUbWembvOCPmjIF4GOvVj tvbF11Dc4XbXwkRf0KNuvjtSsjT634wGzdQ1R5MtHwraGXLVV/LWT0FSyqQ25APhJs coRzeI/IFJZzzvtDkp8ZglyDCN+ym0jqz5AWZqyiCK8smJvW+qPsrJTsUl1y8VlJI2 +dPiw54jhcWWQ== Date: Wed, 20 Nov 2024 17:03:13 +0100 From: Ingo Molnar To: Peter Zijlstra Cc: Andrii Nakryiko , Linus Torvalds , linux-trace-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, oleg@redhat.com, rostedt@goodmis.org, mhiramat@kernel.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, jolsa@kernel.org, paulmck@kernel.org, willy@infradead.org, surenb@google.com, mjguzik@gmail.com, brauner@kernel.org, jannh@google.com, mhocko@kernel.org, Andrii Nakryiko , vbabka@suse.cz, shakeel.butt@linux.dev, hannes@cmpxchg.org, Liam.Howlett@oracle.com, lorenzo.stoakes@oracle.com, david@redhat.com, arnd@arndb.de, richard.weiyang@gmail.com, zhangpeng.00@bytedance.com, linmiaohe@huawei.com, viro@zeniv.linux.org.uk, hca@linux.ibm.com, Mark Rutland , Will Deacon , linux-arm-kernel , Catalin Marinas , Kernel Team Subject: Re: [PATCH v4 tip/perf/core 0/4] uprobes,mm: speculative lockless VMA-to-uprobe lookup Message-ID: References: <20241028010818.2487581-1-andrii@kernel.org> <20241120154323.GA24774@noisy.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241120154323.GA24774@noisy.programming.kicks-ass.net> X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 88A0C16001D X-Stat-Signature: nwtwngytmi31rbi9r3b7bikdmtepf19r X-Rspam-User: X-HE-Tag: 1732118571-693184 X-HE-Meta: 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 5AmrSIQz LUVc+48PDB/4PT0BlTEPW9VeYqQZZHpVwc1uvvue0Q0PBQHJ/enDGS/05cNtRNaW9dCM21wfVqoqBjq8ONfz/ffhU3t1Vqr9TOxOE97jUU/ufeM/QOSfxB4y1Gwqe7LxpzPuWdxuueUUOQ5XI7aA13emB1egO7xGcgDMIkqGJ8OKobKdkM/bibDa2dCx16zu9p1fc++VkKiSY23iz5wiMDIWUhNnovBJ5j8NbUpW4+MJAtZpqa6r4UW30PPw6DcbmwwEVCPifC0t/aTzQ8eciTxHctBso6d92t5A6LvGJbjS6v8yuoYaMGNjC4vUxGZjW6lfPzgrSxX5KLBK32aZ5+kkVxp2fHQP5M6vuKZjp+CbQ7ViDYCSgY3joCnVFGHJ98wG5RvYg+TLVE00= 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: List-Subscribe: List-Unsubscribe: * Peter Zijlstra wrote: > On Wed, Nov 20, 2024 at 07:40:15AM -0800, Andrii Nakryiko wrote: > > Linus, > > > > I'm not sure what's going on here, this patch set seems to be in some > > sort of "ignore list" on Peter's side with no indication on its > > destiny. > > *sigh* it is not, but my inbox is like drinking from a firehose :/ And I've been considering that particular series WIP for two reasons: 1) Oleg was still unconvinced about patch 5/5 in the v2 discussion. Upon re-reading it I think he might have come around and has agreed to the current approach - but sending a v3 & not seeing Oleg object would ascertain that. 2) There was a build failure reported against -v2 at: https://lore.kernel.org/all/202410050745.2Nuvusy4-lkp@intel.com/t.mbox.gz We cannot and will not merge patches with build failures. Andrii did get some other uprobes scalability work merged in v6.13: - Switch to RCU Tasks Trace flavor for better performance (Andrii Nakryiko) - Massively increase uretprobe SMP scalability by SRCU-protecting the uretprobe lifetime (Andrii Nakryiko) So we've certainly not been ignoring his patches, to the contrary ... Thanks, Ingo