diff options
| -rw-r--r-- | arch/riscv/include/asm/trace.h | 54 | ||||
| -rw-r--r-- | arch/riscv/kernel/sbi.c | 7 |
2 files changed, 61 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/trace.h b/arch/riscv/include/asm/trace.h new file mode 100644 index 000000000000..6151cee5450c --- /dev/null +++ b/arch/riscv/include/asm/trace.h @@ -0,0 +1,54 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM riscv + +#if !defined(_TRACE_RISCV_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_RISCV_H + +#include <linux/tracepoint.h> + +TRACE_EVENT_CONDITION(sbi_call, + TP_PROTO(int ext, int fid), + TP_ARGS(ext, fid), + TP_CONDITION(ext != SBI_EXT_HSM), + + TP_STRUCT__entry( + __field(int, ext) + __field(int, fid) + ), + + TP_fast_assign( + __entry->ext = ext; + __entry->fid = fid; + ), + + TP_printk("ext=0x%x fid=%d", __entry->ext, __entry->fid) +); + +TRACE_EVENT_CONDITION(sbi_return, + TP_PROTO(int ext, long error, long value), + TP_ARGS(ext, error, value), + TP_CONDITION(ext != SBI_EXT_HSM), + + TP_STRUCT__entry( + __field(long, error) + __field(long, value) + ), + + TP_fast_assign( + __entry->error = error; + __entry->value = value; + ), + + TP_printk("error=%ld value=0x%lx", __entry->error, __entry->value) +); + +#endif /* _TRACE_RISCV_H */ + +#undef TRACE_INCLUDE_PATH +#undef TRACE_INCLUDE_FILE + +#define TRACE_INCLUDE_PATH asm +#define TRACE_INCLUDE_FILE trace + +#include <trace/define_trace.h> diff --git a/arch/riscv/kernel/sbi.c b/arch/riscv/kernel/sbi.c index e66e0999a800..a1d21d8f5293 100644 --- a/arch/riscv/kernel/sbi.c +++ b/arch/riscv/kernel/sbi.c @@ -14,6 +14,9 @@ #include <asm/smp.h> #include <asm/tlbflush.h> +#define CREATE_TRACE_POINTS +#include <asm/trace.h> + /* default SBI version is 0.1 */ unsigned long sbi_spec_version __ro_after_init = SBI_SPEC_VERSION_DEFAULT; EXPORT_SYMBOL(sbi_spec_version); @@ -31,6 +34,8 @@ struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, { struct sbiret ret; + trace_sbi_call(ext, fid); + register uintptr_t a0 asm ("a0") = (uintptr_t)(arg0); register uintptr_t a1 asm ("a1") = (uintptr_t)(arg1); register uintptr_t a2 asm ("a2") = (uintptr_t)(arg2); @@ -46,6 +51,8 @@ struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, ret.error = a0; ret.value = a1; + trace_sbi_return(ext, ret.error, ret.value); + return ret; } EXPORT_SYMBOL(sbi_ecall); |