diff options
Diffstat (limited to 'arch/riscv64/conf/init.c')
| -rw-r--r-- | arch/riscv64/conf/init.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/riscv64/conf/init.c b/arch/riscv64/conf/init.c index b2f4024..8177992 100644 --- a/arch/riscv64/conf/init.c +++ b/arch/riscv64/conf/init.c @@ -256,6 +256,8 @@ void callback(long status, long tid, long d0, long d1, long d2, long d3) #define csr_read(csr, \ res) __asm__ volatile ("csrr %0, " csr : "=r" (res) :: "memory") +#define CSR_CYCLE "0xc00" + void _start() { sys_noop(); @@ -264,17 +266,20 @@ void _start() uint64_t second = sys_timebase(); print_value("Timebase", second); - uint64_t n = 0, i, start; + uint64_t n = 0, i, start, cn, cstart, cend; start = i = sys_ticks(); print_value("Start ticks", start); + csr_read(CSR_CYCLE, cstart); while (i < start + second) { i = sys_ticks(); n++; } + csr_read(CSR_CYCLE, cend); print_value("End ticks", i); print_value("Syscalls per second", n); + print_value("Executed cycles per second", cend - cstart); puts("Setting callback..."); sys_ipc_server(callback); |