Re: [PATCH 1/3][RFC] ftrace/ppc: Have PPC skip updating with stop_machine()

2012-06-07 Thread Michael Ellerman
On Thu, 2012-04-26 at 14:31 -0400, Steven Rostedt wrote: > plain text document attachment > (0001-ftrace-ppc-Have-PPC-skip-updating-with-stop_machine.patch) > From: Steven Rostedt > > PPC does not have the synchronization issues that x86 has with > modifying code on one CPU while another CPU is e

[PATCH 1/3][RFC] ftrace/ppc: Have PPC skip updating with stop_machine()

2012-04-26 Thread Steven Rostedt
From: Steven Rostedt PPC does not have the synchronization issues that x86 has with modifying code on one CPU while another CPU is executing it. The other CPU will either see the old or new code without any issues, unlike x86 which may issue a GPF. Instead of calling the heavy stop_machine, just