linux-kernel - Re: [PATCH] Add minimal support for software performance counters for ia64

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20090819161234.GB31058@elte.hu>
Date:	Wed, 19 Aug 2009 18:12:34 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	William Cohen <wcohen@...hat.com>,
	"Luck, Tony" <tony.luck@...el.com>,
	Fenghua Yu <fenghua.yu@...el.com>, linux-ia64@...r.kernel.org
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Add minimal support for software performance counters
	for ia64


* William Cohen <wcohen@...hat.com> wrote:

> The following patch adds minimal support for software 
> performance counters for ia64.

Nice!

> For the kernel the patch enables configuration of the 
> perf counter option, adds the perf_counter_open 
> syscall, and includes a minimal machine specific 
> asm/perf.h header file.
> 
> For the perf tool the header perf.h includes an ia64 
> specific section and the options used in the Makefile 
> were adjusted to allow compilation on ia64.  The 
> -Wcast-align gives "cast increases required alignment 
> of target type" warning for the list_for_each_entry() 
> macro. The "-fno-strict-aliasing" was used to avoid 
> warnings for "dereferencing type-punned pointer will 
> break strict-aliasing rules" warnings for sscanf() 
> functions in util/trace-event-parse.c

Tony, Fenghua Yu, this patch already depends on .32 
changes in the perfcounters tree - would be OK to you if 
we merged this patch into the perfcounters tree? Plus 
perhaps merge a syscall placeholder patch into the ia64 
tree?

Thanks,

	Ingo
--
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/