From: David S. Miller <davem@davemloft.net>
Date: Sun, 4 Apr 2010 06:50:59 +0000 (-0700)
Subject: sparc64: Implement perf_arch_fetch_caller_regs
X-Git-Tag: v2.6.34-rc4~74^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=954fbc8985328a3b59b5881243d3aa04a8f8da7c;p=pandora-kernel.git

sparc64: Implement perf_arch_fetch_caller_regs

We provide regs->tstate, regs->tpc, regs->tnpc and
regs->u_regs[UREG_FP].

regs->tstate is necessary for:

	user_mode()		(via perf_exclude_event())

	perf_misc_flags()	(via perf_prepare_sample())

regs->tpc is necessary for:

	perf_instruction_pointer() (via perf_prepare_sample())

and regs->u_regs[UREG_FP] is necessary for:

	perf_callchain()	(via perf_prepare_sample())

The regs->tnpc value is provided just to be tidy.

Signed-off-by: David S. Miller <davem@davemloft.net>
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