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| author |  Alan Kao <alankao@andestech.com>
| 2018-02-13 13:13:17 +0800 |
|---|---|---|
| committer |  Palmer Dabbelt <palmer@sifive.com>
| 2018-04-02 19:59:12 -0700 |
| commit | c15ac4fd60d5ffdb151bb2c7805f377fd7f90363 (patch) | |
| tree | 758628a4b5779f5af742da0b1781e8a467736827 /arch/riscv/kernel/Makefile | |
| parent | riscv/ftrace: Add RECORD_MCOUNT support (diff) | |
| download | linux-c15ac4fd60d5ffdb151bb2c7805f377fd7f90363.tar.gz linux-c15ac4fd60d5ffdb151bb2c7805f377fd7f90363.tar.bz2 linux-c15ac4fd60d5ffdb151bb2c7805f377fd7f90363.zip | |
riscv/ftrace: Add dynamic function tracer support
We now have dynamic ftrace with the following added items:
* ftrace_make_call, ftrace_make_nop (in kernel/ftrace.c)
The two functions turn each recorded call site of filtered functions
into a call to ftrace_caller or nops
* ftracce_update_ftrace_func (in kernel/ftrace.c)
turns the nops at ftrace_call into a call to a generic entry for
function tracers.
* ftrace_caller (in kernel/mcount-dyn.S)
The entry where each _mcount call sites calls to once they are
filtered to be traced.
Also, this patch fixes the semantic problems in mcount.S, which will be
treated as only a reference implementation once we have the dynamic
ftrace.
Cc: Greentime Hu <greentime@andestech.com>
Signed-off-by: Alan Kao <alankao@andestech.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch/riscv/kernel/Makefile')
| -rw-r--r-- | arch/riscv/kernel/Makefile | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile index 196f62ffc428..d7bdf888f1ca 100644 --- a/arch/riscv/kernel/Makefile +++ b/arch/riscv/kernel/Makefile @@ -34,7 +34,8 @@ CFLAGS_setup.o := -mcmodel=medany obj-$(CONFIG_SMP) += smpboot.o obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_MODULES) += module.o -obj-$(CONFIG_FUNCTION_TRACER) += mcount.o -obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o + +obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o +obj-$(CONFIG_DYNAMIC_FTRACE) += mcount-dyn.o clean: |