From: Steven Rostedt <rostedt@goodmis.org>
To: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Ye Bin <yebin10@huawei.com>, <mathieu.desnoyers@efficios.com>,
<linux-trace-kernel@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v7 1/5] tracing/probes: support '%pd' type for print struct dentry's name
Date: Thu, 21 Mar 2024 11:48:36 -0400 [thread overview]
Message-ID: <20240321114836.2d448dd1@gandalf.local.home> (raw)
In-Reply-To: <20240322002805.fbfe11e4f8f02e701d8d0c91@kernel.org>
On Fri, 22 Mar 2024 00:28:05 +0900
Masami Hiramatsu (Google) <mhiramat@kernel.org> wrote:
> On Fri, 22 Mar 2024 00:07:59 +0900
> Masami Hiramatsu (Google) <mhiramat@kernel.org> wrote:
>
> > > What would be really useful is if we had a way to expose BTF here. Something like:
> > >
> > > "%pB:<struct>:<field>"
> > >
> > > The "%pB" would mean to look up the struct/field offsets and types via BTF,
> > > and create the appropriate command to find and print it.
> >
> > Would you mean casing the pointer to "<struct>"?
>
> BTW, for this BTF type casting, I would like to make it more naturally, like
> (<struct> *)$arg1-><field> as same as other BTF args.
>
Sure. I'm just interested in the functionality. I'll let others come up
with the syntax. ;-)
-- Steve
next prev parent reply other threads:[~2024-03-21 15:46 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-20 13:29 [PATCH v7 0/5] support '%pd' and '%pD' for print file name Ye Bin
2024-03-20 13:29 ` [PATCH v7 1/5] tracing/probes: support '%pd' type for print struct dentry's name Ye Bin
2024-03-21 14:15 ` Steven Rostedt
2024-03-21 15:07 ` Masami Hiramatsu
2024-03-21 15:28 ` Masami Hiramatsu
2024-03-21 15:48 ` Steven Rostedt [this message]
2024-03-21 15:46 ` Steven Rostedt
2024-03-20 13:29 ` [PATCH v7 2/5] tracing/probes: support '%pD' type for print struct file's name Ye Bin
2024-03-20 13:29 ` [PATCH v7 3/5] Documentation: tracing: add new type '%pd' and '%pD' for kprobe Ye Bin
2024-03-20 13:29 ` [PATCH v7 4/5] selftests/ftrace: add kprobe test cases for VFS type "%pd" and "%pD" Ye Bin
2024-03-20 13:29 ` [PATCH v7 5/5] selftests/ftrace: add fprobe " Ye Bin
2024-03-21 14:01 ` [PATCH v7 0/5] support '%pd' and '%pD' for print file name Masami Hiramatsu
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