linux-kernel - Re: [PATCH 3/3] powerpc perf_event: Add alignment-faults and emulation-faults software events

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: <20091019004226.GT4808@kryten>
Date:	Mon, 19 Oct 2009 11:42:26 +1100
From:	Anton Blanchard <anton@...ba.org>
To:	Michael Ellerman <michael@...erman.id.au>
Cc:	benh@...nel.crashing.org, mingo@...e.hu, paulus@...ba.org,
	a.p.zijlstra@...llo.nl, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] powerpc perf_event: Add alignment-faults and
	emulation-faults software events


Hi,

> > +#define PPC_WARN_ALIGNMENT(type, regs)				\
> > +	do {								\
> > +		perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS,		\
> > +			1, 0, regs, regs->dar);				\
> > +		__PPC_WARN_EMULATED(type);				\
> > +	} while (0)
> 
> Does that work with perfxxx configured off?

Yeah, perf_event.h defines an empty version if its configured off:

static inline void
perf_sw_event(u32 event_id, u64 nr, int nmi,
                     struct pt_regs *regs, u64 addr)                    { }

Anton
--
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/