linux-kernel - Re: [PATCH 2/2] tracing/function-graph-tracer: improve duration output

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 3 Dec 2008 11:07:04 +0100
From:	"Frédéric Weisbecker" <fweisbec@...il.com>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	"Steven Rostedt" <rostedt@...dmis.org>,
	"Tim Bird" <tim.bird@...sony.com>,
	"Peter Zijlstra" <a.p.zijlstra@...llo.nl>,
	"Linux Kernel" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] tracing/function-graph-tracer: improve duration output

2008/12/3 Ingo Molnar <mingo@...e.hu>:
> small detail: i'd suggest to remove the newline before the context-switch
> box. That makes it appear visually to attach logically with the
> switch-out place, not the switch-in place:
>
>>  0)    cat-2796    |   0.579 us    |            native_load_sp0();
>>  0)    cat-2796    |   0.722 us    |            native_load_tls();
>>  ------------------------------------------
>>  | 0)    cat-2796    =>   events/-9
>>  ------------------------------------------
>>
>>  0)   events/-9    |               |    finish_task_switch() {
>>  0)   events/-9    |   0.789 us    |      _spin_unlock_irq();
>>  0)   events/-9    |   2.309 us    |    }
>>  0)   events/-9    | ! 269848.5 us |  }
>
> which is what we want to express.
>


Ok, I'll fix it.


>
> btw., i tested the graph tracer on a 16-way 64-bit box as well, and the
> multi-digit CPU field printout magic works fine there too:
>
>  9)               |    pick_next_task() {
>  9)   0.283 us    |      pick_next_task_fair();
>  9)   0.276 us    |      pick_next_task_rt();
>  9)   0.273 us    |      pick_next_task_fair();
>  9)   0.279 us    |      pick_next_task_idle();
>  9)   2.596 us    |    }
>  9)   0.566 us    |    __lock_text_start();
>  10)   0.299 us    |        }
>  10)               |        mm_init() {
>  10)               |          pgd_alloc() {
>  10)               |            __get_free_pages() {
>  10)               |              alloc_pages_current() {
>  10)   0.330 us    |                policy_zonelist();
>  10)               |                __alloc_pages_internal() {
>
>        Ingo
>

Hmm not really, there should be one space more before the 9 to fit the
log10(MAX_CPU) here and not break
the column.

Thanks!
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/