From: Peter Zijlstra <peterz@infradead.org>
To: Andrii Nakryiko <andrii@kernel.org>
Cc: linux-trace-kernel@vger.kernel.org, rostedt@goodmis.org,
mhiramat@kernel.org, oleg@redhat.com, mingo@redhat.com,
bpf@vger.kernel.org, jolsa@kernel.org, paulmck@kernel.org,
clm@meta.com
Subject: Re: [PATCH v2 00/12] uprobes: add batched register/unregister APIs and per-CPU RW semaphore
Date: Tue, 2 Jul 2024 12:23:53 +0200 [thread overview]
Message-ID: <20240702102353.GG11386@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <20240701223935.3783951-1-andrii@kernel.org>
On Mon, Jul 01, 2024 at 03:39:23PM -0700, Andrii Nakryiko wrote:
> This patch set, ultimately, switches global uprobes_treelock from RW spinlock
> to per-CPU RW semaphore, which has better performance and scales better under
> contention and multiple parallel threads triggering lots of uprobes.
Why not RCU + normal lock thing?
next prev parent reply other threads:[~2024-07-02 10:23 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-01 22:39 [PATCH v2 00/12] uprobes: add batched register/unregister APIs and per-CPU RW semaphore Andrii Nakryiko
2024-07-01 22:39 ` [PATCH v2 01/12] uprobes: update outdated comment Andrii Nakryiko
2024-07-03 11:38 ` Oleg Nesterov
2024-07-03 18:24 ` Andrii Nakryiko
2024-07-03 21:51 ` Andrii Nakryiko
2024-07-10 13:31 ` Oleg Nesterov
2024-07-10 15:14 ` Andrii Nakryiko
2024-07-01 22:39 ` [PATCH v2 02/12] uprobes: correct mmap_sem locking assumptions in uprobe_write_opcode() Andrii Nakryiko
2024-07-03 11:41 ` Oleg Nesterov
2024-07-03 13:15 ` Masami Hiramatsu
2024-07-03 18:25 ` Andrii Nakryiko
2024-07-03 21:47 ` Masami Hiramatsu
2024-07-01 22:39 ` [PATCH v2 03/12] uprobes: simplify error handling for alloc_uprobe() Andrii Nakryiko
2024-07-01 22:39 ` [PATCH v2 04/12] uprobes: revamp uprobe refcounting and lifetime management Andrii Nakryiko
2024-07-02 10:22 ` Peter Zijlstra
2024-07-02 17:54 ` Andrii Nakryiko
2024-07-03 13:36 ` Peter Zijlstra
2024-07-03 20:47 ` Andrii Nakryiko
2024-07-04 8:03 ` Peter Zijlstra
2024-07-04 8:45 ` Peter Zijlstra
2024-07-04 14:40 ` Masami Hiramatsu
2024-07-04 8:31 ` Peter Zijlstra
2024-07-05 15:37 ` Oleg Nesterov
2024-07-06 17:00 ` Jiri Olsa
2024-07-06 17:05 ` Jiri Olsa
2024-07-07 14:46 ` Oleg Nesterov
2024-07-08 17:47 ` Andrii Nakryiko
2024-07-09 18:47 ` Oleg Nesterov
2024-07-09 20:59 ` Andrii Nakryiko
2024-07-09 21:31 ` Oleg Nesterov
2024-07-09 21:45 ` Andrii Nakryiko
2024-07-08 17:47 ` Andrii Nakryiko
2024-07-01 22:39 ` [PATCH v2 05/12] uprobes: move offset and ref_ctr_offset into uprobe_consumer Andrii Nakryiko
2024-07-03 8:13 ` Peter Zijlstra
2024-07-03 10:13 ` Masami Hiramatsu
2024-07-03 18:23 ` Andrii Nakryiko
2024-07-07 12:48 ` Oleg Nesterov
2024-07-08 17:56 ` Andrii Nakryiko
2024-07-01 22:39 ` [PATCH v2 06/12] uprobes: add batch uprobe register/unregister APIs Andrii Nakryiko
2024-07-01 22:39 ` [PATCH v2 07/12] uprobes: inline alloc_uprobe() logic into __uprobe_register() Andrii Nakryiko
2024-07-01 22:39 ` [PATCH v2 08/12] uprobes: split uprobe allocation and uprobes_tree insertion steps Andrii Nakryiko
2024-07-01 22:39 ` [PATCH v2 09/12] uprobes: batch uprobes_treelock during registration Andrii Nakryiko
2024-07-01 22:39 ` [PATCH v2 10/12] uprobes: improve lock batching for uprobe_unregister_batch Andrii Nakryiko
2024-07-01 22:39 ` [PATCH v2 11/12] uprobes,bpf: switch to batch uprobe APIs for BPF multi-uprobes Andrii Nakryiko
2024-07-01 22:39 ` [PATCH v2 12/12] uprobes: switch uprobes_treelock to per-CPU RW semaphore Andrii Nakryiko
2024-07-02 10:23 ` Peter Zijlstra [this message]
2024-07-02 11:54 ` [PATCH v2 00/12] uprobes: add batched register/unregister APIs and " Peter Zijlstra
2024-07-02 12:01 ` Peter Zijlstra
2024-07-02 17:54 ` Andrii Nakryiko
2024-07-02 19:18 ` Peter Zijlstra
2024-07-02 23:56 ` Paul E. McKenney
2024-07-03 4:54 ` Andrii Nakryiko
2024-07-03 7:50 ` Peter Zijlstra
2024-07-03 14:08 ` Paul E. McKenney
2024-07-04 8:39 ` Peter Zijlstra
2024-07-04 15:13 ` Paul E. McKenney
2024-07-03 21:57 ` Steven Rostedt
2024-07-03 22:07 ` Paul E. McKenney
2024-07-03 4:47 ` Andrii Nakryiko
2024-07-03 8:07 ` Peter Zijlstra
2024-07-03 20:55 ` Andrii Nakryiko
2024-07-03 21:33 ` Andrii Nakryiko
2024-07-04 9:15 ` Peter Zijlstra
2024-07-04 13:56 ` Steven Rostedt
2024-07-04 15:44 ` Paul E. McKenney
2024-07-08 17:47 ` Andrii Nakryiko
2024-07-08 17:48 ` Andrii Nakryiko
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