From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
To: Stephen Boyd <swboyd@chromium.org>, Matthew Wilcox <willy@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@kernel.org>,
Alexei Starovoitov <ast@kernel.org>, Jessica Yu <jeyu@kernel.org>,
Evan Green <evgreen@chromium.org>,
Hsin-Yi Wang <hsinyi@chromium.org>,
Petr Mladek <pmladek@suse.com>,
Steven Rostedt <rostedt@goodmis.org>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-doc@vger.kernel.org
Subject: Re: [PATCH 5/7] printk: Make %pS and friends print module build ID
Date: Fri, 5 Mar 2021 00:11:47 +0100 [thread overview]
Message-ID: <95e58426-c7ab-6ba5-17ea-392754899959@rasmusvillemoes.dk> (raw)
In-Reply-To: <161488534185.1478170.10285681551102444519@swboyd.mtv.corp.google.com>
On 04/03/2021 20.15, Stephen Boyd wrote:
> Quoting Matthew Wilcox (2021-03-04 09:00:52)
>> On Mon, Mar 01, 2021 at 09:47:47AM -0800, Stephen Boyd wrote:
>>> Example:
>>>
>>> WARNING: CPU: 4 PID: 3255 at drivers/misc/lkdtm/bugs.c:83 lkdtm_WARNING+0x28/0x30 [lkdtm] (ed5019fdf5e53be37cb1ba7899292d7e143b259e)
>>
>> Would the first 12 characters instead of all 40 make it more palatable
>> without reducing its utility?
>
> I can't seem to request debuginfo from debuginfod without the full 40
> characters. It's not a git sha1 hash.
>
>> And I feel it should be within the [], so maybe this:
>>
>> WARNING: CPU: 4 PID: 3255 at drivers/misc/lkdtm/bugs.c:83 lkdtm_WARNING+0x28/0x30 [lkdtm ed5019fdf5e5]
>>
>
> Sure I could put the hex numbers inside the brackets. I suspect changing
> %pS or updating the "Modules linked in:" line isn't going to be
> palatable. I've decided to introduce another printk format %pT to print
> the stacktrace
Can you avoid claiming a new "top-level" %p modifier? Isn't it better to
add a new flag to '%pS', say '%pSb' to include build-id?
Rasmus
next prev parent reply other threads:[~2021-03-04 23:11 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-01 17:47 [PATCH 0/7] Add build ID to stacktraces Stephen Boyd
2021-03-01 17:47 ` [PATCH 1/7] buildid: Add method to get running kernel's build ID Stephen Boyd
[not found] ` <CAHp75VcCjYm59-BQ0paPDCV97N5mgcq_OAdeixgUDEnAuG2qMg@mail.gmail.com>
[not found] ` <161472770533.1478170.3061709841985494537@swboyd.mtv.corp.google.com>
2021-03-04 0:41 ` Stephen Boyd
2021-03-01 17:47 ` [PATCH 2/7] dump_stack: Add vmlinux build ID to stack traces Stephen Boyd
2021-03-01 17:47 ` [PATCH 3/7] buildid: Add API to parse build ID out of buffer Stephen Boyd
2021-03-01 17:47 ` [PATCH 4/7] module: Parse and stash build ID on insertion Stephen Boyd
2021-03-01 17:47 ` [PATCH 5/7] printk: Make %pS and friends print module build ID Stephen Boyd
2021-03-02 2:43 ` Steven Rostedt
2021-03-02 23:24 ` Stephen Boyd
2021-03-04 17:19 ` Matthew Wilcox
2021-03-04 19:11 ` Stephen Boyd
2021-03-03 2:01 ` Steven Rostedt
2021-03-03 3:00 ` Stephen Boyd
2021-03-03 8:19 ` Andy Shevchenko
2021-03-03 8:56 ` Stephen Boyd
2021-03-03 10:25 ` Petr Mladek
2021-03-03 15:00 ` Steven Rostedt
2021-03-03 16:17 ` Andy Shevchenko
2021-03-04 0:38 ` Stephen Boyd
2021-03-04 1:19 ` Steven Rostedt
2021-03-04 6:25 ` Stephen Boyd
2021-03-04 1:17 ` Stephen Boyd
2021-03-04 17:00 ` Matthew Wilcox
2021-03-04 19:15 ` Stephen Boyd
2021-03-04 23:11 ` Rasmus Villemoes [this message]
2021-03-05 4:21 ` Stephen Boyd
2021-03-01 17:47 ` [PATCH 6/7] buildid: Mark some arguments const Stephen Boyd
2021-03-01 17:47 ` [PATCH 7/7] kdump: Use vmlinux_build_id() to simplify Stephen Boyd
2021-03-02 8:19 ` Baoquan He
2021-03-02 23:21 ` Stephen Boyd
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