From: Jiri Olsa <olsajiri@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: mingo@kernel.org, andrii@kernel.org, oleg@redhat.com,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
rostedt@goodmis.org, mhiramat@kernel.org, clm@meta.com,
paulmck@kernel.org
Subject: Re: [PATCH v2 08/11] perf/uprobe: Convert (some) uprobe->refcount to SRCU
Date: Thu, 11 Jul 2024 16:03:38 +0200 [thread overview]
Message-ID: <Zo_mOuq9Gr9CzRP-@krava> (raw)
In-Reply-To: <20240711110401.096506262@infradead.org>
On Thu, Jul 11, 2024 at 01:02:43PM +0200, Peter Zijlstra wrote:
SNIP
> /* Tracing handlers use ->utask to communicate with fetch methods */
> if (!get_utask())
> - goto out;
> + return;
>
> if (arch_uprobe_ignore(&uprobe->arch, regs))
> - goto out;
> + return;
>
> handler_chain(uprobe, regs);
>
> if (arch_uprobe_skip_sstep(&uprobe->arch, regs))
> - goto out;
> -
> - if (!pre_ssout(uprobe, regs, bp_vaddr))
> return;
>
> - /* arch_uprobe_skip_sstep() succeeded, or restart if can't singlestep */
> -out:
> - put_uprobe(uprobe);
> + pre_ssout(uprobe, regs, bp_vaddr);
pre_ssout could now return void
jirka
> }
>
> /*
>
>
next prev parent reply other threads:[~2024-07-11 14:03 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-11 11:02 [PATCH v2 00/11] perf/uprobe: Optimize uprobes Peter Zijlstra
2024-07-11 11:02 ` [PATCH v2 01/11] perf/uprobe: Re-indent labels Peter Zijlstra
2024-07-11 11:58 ` Jiri Olsa
2024-07-11 12:07 ` Peter Zijlstra
2024-07-11 11:02 ` [PATCH v2 02/11] perf/uprobe: Remove spurious whitespace Peter Zijlstra
2024-07-11 11:02 ` [PATCH v2 03/11] rbtree: Provide rb_find_rcu() / rb_find_add_rcu() Peter Zijlstra
2024-07-12 20:23 ` Andrii Nakryiko
2024-07-15 11:21 ` Peter Zijlstra
2024-07-15 17:13 ` Andrii Nakryiko
2024-07-11 11:02 ` [PATCH v2 04/11] perf/uprobe: RCU-ify find_uprobe() Peter Zijlstra
2024-07-11 13:59 ` Masami Hiramatsu
2024-07-11 11:02 ` [PATCH v2 05/11] perf/uprobe: Simplify UPROBE_HANDLER_REMOVE logic Peter Zijlstra
2024-07-11 11:02 ` [PATCH v2 06/11] perf/uprobe: SRCU-ify uprobe->consumer list Peter Zijlstra
2024-07-12 21:06 ` Andrii Nakryiko
2024-07-15 11:25 ` Peter Zijlstra
2024-07-15 17:30 ` Andrii Nakryiko
2024-07-11 11:02 ` [PATCH v2 07/11] perf/uprobe: Split uprobe_unregister() Peter Zijlstra
2024-07-12 21:10 ` Andrii Nakryiko
2024-07-11 11:02 ` [PATCH v2 08/11] perf/uprobe: Convert (some) uprobe->refcount to SRCU Peter Zijlstra
2024-07-11 14:03 ` Jiri Olsa [this message]
2024-07-12 21:21 ` Andrii Nakryiko
2024-07-11 11:02 ` [PATCH v2 09/11] srcu: Add __srcu_clone_read_lock() Peter Zijlstra
2024-07-11 11:02 ` [PATCH v2 10/11] perf/uprobe: Convert single-step and uretprobe to SRCU Peter Zijlstra
2024-07-11 16:06 ` Oleg Nesterov
2024-07-11 18:42 ` Peter Zijlstra
2024-07-12 10:26 ` Oleg Nesterov
2024-07-12 21:28 ` Andrii Nakryiko
2024-07-15 11:59 ` Peter Zijlstra
2024-07-11 11:02 ` [PATCH v2 11/11] perf/uprobe: Add uretprobe timer Peter Zijlstra
2024-07-11 13:19 ` Oleg Nesterov
2024-07-11 15:00 ` Peter Zijlstra
2024-07-11 15:55 ` Peter Zijlstra
2024-07-11 16:06 ` Peter Zijlstra
2024-07-12 21:43 ` Andrii Nakryiko
2024-07-15 11:41 ` Peter Zijlstra
2024-07-15 17:34 ` Andrii Nakryiko
2024-07-12 4:57 ` [PATCH v2 00/11] perf/uprobe: Optimize uprobes Andrii Nakryiko
2024-07-12 9:13 ` Peter Zijlstra
2024-07-12 13:10 ` Peter Zijlstra
2024-07-12 15:29 ` Andrii Nakryiko
2024-07-15 14:45 ` Peter Zijlstra
2024-07-15 17:10 ` Andrii Nakryiko
2024-07-15 18:10 ` Andrii Nakryiko
2024-07-19 18:42 ` Andrii Nakryiko
2024-07-27 0:18 ` Andrii Nakryiko
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