powerpc64/ftrace: use PACA to retrieve TOC in mod_return_to_handler

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The mod_return_to_handler needs to switch to the kernel TOC before
jumping to a the kernel code. It currently does this by looking
at the kernel function data and retrieves the TOC that way.

Not only is this inefficient, it also breaks with a relocatable kernel.
The PACA contains the kernel TOC and we can easily retrieve it that
way.

Reported-by: Sachin Sant <sachinp@in.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

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Steven Rostedt 2009-09-15 08:30:14 -07:00 • committed by Steven Rostedt

parent 9135c3cc5a

commit be10ab1090

1 changed files with 1 additions and 2 deletions

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arch/powerpc/kernel/entry_64.S

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