linux-kernel - Re: [patch for 2.6.26 0/7] Architecture Independent Markers

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:	Fri, 28 Mar 2008 02:08:43 +0900
From:	"KOSAKI Motohiro" <m-kosaki@...es.dti.ne.jp>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	"Mathieu Desnoyers" <mathieu.desnoyers@...ymtl.ca>,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	"Linus Torvalds" <torvalds@...ux-foundation.org>
Subject: Re: [patch for 2.6.26 0/7] Architecture Independent Markers

Hi

>      text    data     bss     dec     hex filename
>     37642    7014     384   45040    aff0 sched.o.before
>     37930    7134     384   45448    b188 sched.o.after
>
>  288 bytes for only 3 markers in the scheduler - that's 96 bytes added
>  per every marker (44 bytes of that in the fastpath).
>
>  and the tracer codepath is now slower and more complex as well.
>
>  A classic lose-lose situation, so let's apply this patch. Not!
>
>  NACK-ed-by: Ingo Molnar <mingo@...e.hu>

I wonder why nobody doesn't fix this serious problem until now.
and I am interesting to what difference to ftrace and marker.

if I have time at next week, I will investigate the marker problem.
--
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/