Zong Li <z...@andestech.com> 於 2018年8月15日 週三 下午5:35寫道： > > This patch set implements the ftrace function and function graph tracer > on NDS32 architecture. We try to use C code to do everything, so we don't > need to separate the implementation to assembly code and C code, we just > need one ftrace.c file. > > In mcount function, we use the prologue/epilogue which generated by compiler > to help us to save/restore the status. On the other hand, we use naked > attribute of gcc to avoid to generate the prologue/epilogue when we don't > need it(such as ftrace_stub and return_to_handler). > > We pass the following tests: > > 1. FTRACE_STARTUP_TEST: PASS > > 2. tools/testing/selftests/ftrace/: > # of passed: 28 > # of failed: 1 > # of unresolved: 0 > # of untested: 0 > # of unsupported: 38 > # of xfailed: 0 > # of undefined(test bug): 0 > > The failed case is func-filter-glob.tc. > When setting the '*aw*lock' to the set_ftrace_filter in this test case, > we got the error because we have no these functions such as _raw_spin_lock, > _raw_spin_trylock and so on in our kernel. > > Zong Li (6): > nds32/ftrace: Support static function tracer > nds32/ftrace: Support static function graph tracer > nds32/ftrace: Add RECORD_MCOUNT support > nds32/ftrace: Support dynamic function tracer > nds32/ftrace: Support dynamic function graph tracer > nds32/stack: Get real return address by using ftrace_graph_ret_addr > > arch/nds32/Kconfig | 4 + > arch/nds32/Makefile | 4 + > arch/nds32/include/asm/ftrace.h | 46 +++++++ > arch/nds32/kernel/Makefile | 6 + > arch/nds32/kernel/ftrace.c | 297 > ++++++++++++++++++++++++++++++++++++++++ > arch/nds32/kernel/stacktrace.c | 4 + > arch/nds32/kernel/traps.c | 30 +--- > scripts/recordmcount.pl | 3 + > 8 files changed, 370 insertions(+), 24 deletions(-) > create mode 100644 arch/nds32/include/asm/ftrace.h > create mode 100644 arch/nds32/kernel/ftrace.c
Acked-by: Greentime Hu <greent...@andestech.com>
