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riscv/ftrace: Add ARCH_SUPPORTS_FTRACE_OPS support 

Cc: Greentime Hu <greentime@andestech.com>
Signed-off-by: Alan Kao <alankao@andestech.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This commit is contained in:
Alan Kao 2018-02-13 13:13:19 +08:00 committed by Palmer Dabbelt
parent bc1a4c3a84
commit 71e736a7d6
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2 changed files with 4 additions and 0 deletions
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1
arch/riscv/include/asm/ftrace.h
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@ -9,6 +9,7 @@
#define HAVE_FUNCTION_GRAPH_FP_TEST
#endif
#define ARCH_SUPPORTS_FTRACE_OPS 1
#ifndef __ASSEMBLY__
void _mcount(void);
static inline unsigned long ftrace_call_adjust(unsigned long addr)

3
arch/riscv/kernel/mcount-dyn.S
View File

@ -74,9 +74,12 @@ ENTRY(ftrace_caller)
/*
* a0: the address in the caller when calling ftrace_caller
* a1: the caller's return address
* a2: the address of global variable function_trace_op
*/
ld a1, -8(s0)
addi a0, ra, -MCOUNT_INSN_SIZE
la t5, function_trace_op
ld a2, 0(t5)
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
/*