Hi Jingyi,
On 7/2/20 7:29 AM, Andrew Jones wrote:
> On Thu, Jul 02, 2020 at 11:01:30AM +0800, Jingyi Wang wrote:
>> For some test in micro-bench can be time consuming, we add a
>> micro-bench test parameter to allow each individual test to specify
>> its running times.
>>
>> Signed-off-by: Jingyi Wang <wangjingyi11@xxxxxxxxxx>
Reviewed-by: Eric Auger <eric.auger@xxxxxxxxxx>
Eric
>> ---
>> arm/micro-bench.c | 25 ++++++++++++++-----------
>> 1 file changed, 14 insertions(+), 11 deletions(-)
>>
>> diff --git a/arm/micro-bench.c b/arm/micro-bench.c
>> index aeb60a7..506d2f9 100644
>> --- a/arm/micro-bench.c
>> +++ b/arm/micro-bench.c
>> @@ -223,17 +223,18 @@ struct exit_test {
>> const char *name;
>> bool (*prep)(void);
>> void (*exec)(void);
>> + u32 times;
>> bool run;
>> };
>>
>> static struct exit_test tests[] = {
>> - {"hvc", NULL, hvc_exec, true},
>> - {"mmio_read_user", NULL, mmio_read_user_exec, true},
>> - {"mmio_read_vgic", NULL, mmio_read_vgic_exec, true},
>> - {"eoi", NULL, eoi_exec, true},
>> - {"ipi", ipi_prep, ipi_exec, true},
>> - {"ipi_hw", ipi_hw_prep, ipi_exec, true},
>> - {"lpi", lpi_prep, lpi_exec, true},
>> + {"hvc", NULL, hvc_exec, NTIMES, true},
>> + {"mmio_read_user", NULL, mmio_read_user_exec, NTIMES, true},
>> + {"mmio_read_vgic", NULL, mmio_read_vgic_exec, NTIMES, true},
>> + {"eoi", NULL, eoi_exec, NTIMES, true},
>> + {"ipi", ipi_prep, ipi_exec, NTIMES, true},
>> + {"ipi_hw", ipi_hw_prep, ipi_exec, NTIMES, true},
>> + {"lpi", lpi_prep, lpi_exec, NTIMES, true},
>
> Now that we no longer use 'NTIMES' in functions we don't really need the
> define at all. We can just put 65536 directly into the table here for
> each test that needs 65536 times.
>
> Thanks,
> drew
>
>> };
>>
>> struct ns_time {
>> @@ -254,7 +255,7 @@ static void ticks_to_ns_time(uint64_t ticks, struct ns_time *ns_time)
>>
>> static void loop_test(struct exit_test *test)
>> {
>> - uint64_t start, end, total_ticks, ntimes = NTIMES;
>> + uint64_t start, end, total_ticks, ntimes = 0;
>> struct ns_time total_ns, avg_ns;
>>
>> if (test->prep) {
>> @@ -265,15 +266,17 @@ static void loop_test(struct exit_test *test)
>> }
>> isb();
>> start = read_sysreg(cntpct_el0);
>> - while (ntimes--)
>> + while (ntimes < test->times) {
>> test->exec();
>> + ntimes++;
>> + }
>> isb();
>> end = read_sysreg(cntpct_el0);
>>
>> total_ticks = end - start;
>> ticks_to_ns_time(total_ticks, &total_ns);
>> - avg_ns.ns = total_ns.ns / NTIMES;
>> - avg_ns.ns_frac = total_ns.ns_frac / NTIMES;
>> + avg_ns.ns = total_ns.ns / ntimes;
>> + avg_ns.ns_frac = total_ns.ns_frac / ntimes;
>>
>> printf("%-30s%15" PRId64 ".%-15" PRId64 "%15" PRId64 ".%-15" PRId64 "\n",
>> test->name, total_ns.ns, total_ns.ns_frac, avg_ns.ns, avg_ns.ns_frac);
>> --
>> 2.19.1
>>
>>
_______________________________________________
kvmarm mailing list
kvmarm@xxxxxxxxxxxxxxxxxxxxx
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
