From: Steven Rostedt <rostedt@goodmis.org>
Date: Wed, 22 Dec 2010 16:42:56 +0000 (+0000)
Subject: powerpc/ppc32/tracing: Add stack frame to calls of trace_hardirqs_on/off
X-Git-Tag: v2.6.38-rc2~12^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=06ca2188eccbd7932636ac5bde2837297800480e;p=pandora-kernel.git

powerpc/ppc32/tracing: Add stack frame to calls of trace_hardirqs_on/off

32-bit variant of the previous patch for 64-bit:

<<
    When an interrupt occurs in userspace, we can call trace_hardirqs_on/off()
    With one level stack. But if we have irqsoff tracing enabled,
    it checks both CALLER_ADDR0 and CALLER_ADDR1. The second call
    goes two stack frames up. If this is from user space, then there may
    not exist a second stack....
>>

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

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