ftrace for MIPS

From: Wu Zhangjin <wuzhangjin@gmail.com>

This patchset incorporates the feedbacks from Steven, Frederic, David, Richard
and Michal.

The main changes from the v6 version:

 o tracing: add IRQENTRY_EXIT section for MIPS: keep the return value of
 do_IRQ_* be void as the original version does.

 o tracing: define a new __time_notrace annotation flag: replace the old
 __arch_notrace by __time_notrace, just keep the stuff simpler.

 o tracing: make ftrace for MIPS work without -fno-omit-frame-pointer: prepare
 for the future -fomit-frame-pointer, Seems we are not necessary to enable
 -fno-omit-frame-pointer with -pg

 o tracing: make ftrace for MIPS more robust: add the safe load/store
 operations for MIPS
 
 o tracing: add function graph tracer support for MIPS: make the searching of
 the location of return address(ra) clearer.

 o tracing: reserve $12(t0) for mcount-ra-address of gcc 4.5
   tracing: make function graph tracer work with -mmcount-ra-address
 
All of these updates have been pused into:

git://dev.lemote.com/rt4ls.git  linux-mips/dev/ftrace-upstream

All of these stuff and their combinations have been tested with gcc 4.4 & 4.5
on a YeeLoong netbook.

Welcome to play with it and give more feedbacks ;)

Thanks & Regards,
       Wu Zhangjin

Wu Zhangjin (17):
  tracing: convert trace_clock_local() as weak function
  tracing: add mips_timecounter_read() for MIPS
  tracing: add MIPS specific trace_clock_local()
  tracing: add static function tracer support for MIPS
  tracing: enable HAVE_FUNCTION_TRACE_MCOUNT_TEST for MIPS
  tracing: add an endian argument to scripts/recordmcount.pl
  tracing: add dynamic function tracer support for MIPS
  tracing: add IRQENTRY_EXIT section for MIPS
  tracing: define a new __time_notrace annotation flag
  tracing: not trace the timecounter_read* in kernel/time/clocksource.c
  tracing: not trace mips_timecounter_read() for MIPS
  tracing: add function graph tracer support for MIPS
  tracing: add dynamic function graph tracer for MIPS
  tracing: make ftrace for MIPS work without -fno-omit-frame-pointer
  tracing: make ftrace for MIPS more robust
  tracing: reserve $12(t0) for mcount-ra-address of gcc 4.5
  tracing: make function graph tracer work with -mmcount-ra-address

 arch/mips/Kconfig              |    5 +
 arch/mips/Makefile             |    7 +
 arch/mips/include/asm/ftrace.h |   97 ++++++++++++++++-
 arch/mips/include/asm/irq.h    |   29 +-----
 arch/mips/include/asm/time.h   |   20 ++++
 arch/mips/kernel/Makefile      |    9 ++
 arch/mips/kernel/csrc-r4k.c    |   42 +++++++
 arch/mips/kernel/ftrace.c      |  240 ++++++++++++++++++++++++++++++++++++++++
 arch/mips/kernel/irq.c         |   30 +++++
 arch/mips/kernel/mcount.S      |  191 ++++++++++++++++++++++++++++++++
 arch/mips/kernel/mips_ksyms.c  |    5 +
 arch/mips/kernel/smp.c         |    3 +-
 arch/mips/kernel/smtc.c        |   21 +++-
 arch/mips/kernel/time.c        |    2 +
 arch/mips/kernel/trace_clock.c |   33 ++++++
 arch/mips/kernel/vmlinux.lds.S |    1 +
 arch/mips/sgi-ip22/ip22-int.c  |    3 +-
 arch/mips/sgi-ip22/ip22-time.c |    3 +-
 include/linux/ftrace.h         |   12 ++
 kernel/time/clocksource.c      |    5 +-
 kernel/trace/trace_clock.c     |    2 +-
 scripts/Makefile.build         |    1 +
 scripts/recordmcount.pl        |   47 ++++++++-
 23 files changed, 764 insertions(+), 44 deletions(-)
 create mode 100644 arch/mips/kernel/ftrace.c
 create mode 100644 arch/mips/kernel/mcount.S
 create mode 100644 arch/mips/kernel/trace_clock.c

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