[PATCH v7 00/17] ftrace for MIPS

Wu Zhangjin
2009-11-09T15:29:18Z

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