linux-kernel - Re: [PATCH 1/2] perf: Introduce new perf_save

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]

Message-ID: <20100305163838.GA5244@nowhere>
Date:	Fri, 5 Mar 2010 17:38:41 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Masami Hiramatsu <mhiramat@...hat.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H . Peter Anvin" <hpa@...or.com>,
	Paul Mackerras <paulus@...ba.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Jason Baron <jbaron@...hat.com>,
	Archs <linux-arch@...r.kernel.org>
Subject: Re: [PATCH 1/2] perf: Introduce new perf_save_regs() for hot regs
	snapshot

On Fri, Mar 05, 2010 at 10:08:07AM -0500, Masami Hiramatsu wrote:
> > +void perf_arch_save_regs(struct pt_regs *regs, unsigned long ip, int skip)
> 
> Hmm, why would you call it 'save_regs' ?
> It seems that this function is just for fixing registers 
> instead of saving it into somewhere...
> 
> Thank you,


Hmm, save_regs() describes what it does: you pass
a pt_regs and it saves registers inside. But it
has also a kind of fixup thing as it also rewinds.

I'm not sure using a fixup thing for the naming
is correct as we are not starting with initial
regs passed to the function (just a raw buffer).

What about perf_save_caller_regs() ?

--
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/