Hi Akashi, On Fri, Feb 28, 2014 at 05:18:37AM +0000, AKASHI Takahiro wrote: > This patchset implements a function tracer on arm64. > There was another implementation from Cavium network, but both of us agreed > to use my patchset as future base. He is supposed to review this code, too. > > The only issue that I had some concern on was "fault protection" code > in prepare_ftrace_return(). With discussions with Steven and Tim (as author > of arm ftrace), I removed that code since I'm not quite sure about possibility > of "fault" occurrences in this function. > > The code is tested on ARMv8 Fast Model with the following tracers & events: > function tracer with dynamic ftrace > function graph tracer with dynamic ftrace > syscall tracepoint > irqsoff & preemptirqsoff (which use CALLER_ADDRx) > and also verified with in-kernel tests, FTRACE_SELFTEST, FTRACE_STARTUP_TEST > and EVENT_TRACE_TEST_SYSCALLS. > > Prerequisites are: > * "arm64: Add regs_return_value() in syscall.h" > * "arm64: make a single hook to syscall_trace() for all syscall features" > patch
It looks like there might be some more dependencies that that. Do you have a branch anywhere containing this series, along with all the dependencies so I can have a play? Cheers, Will -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/