Commit b8d5a5b0 authored by Jingyi Wang's avatar Jingyi Wang Committed by Paolo Bonzini
Browse files

arm64: microbench: Allow each test to specify its running times

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: default avatarJingyi Wang <>
Reviewed-by: default avatarEric Auger <>
Signed-off-by: Andrew Jones's avatarAndrew Jones <>
Signed-off-by: default avatarPaolo Bonzini <>
parent 0c9afed1
......@@ -22,8 +22,6 @@
#include <asm/gic.h>
#include <asm/gic-v3-its.h>
#define NTIMES (1U << 16)
static u32 cntfrq;
static volatile bool irq_ready, irq_received;
......@@ -234,17 +232,18 @@ 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, 65536, true},
{"mmio_read_user", NULL, mmio_read_user_exec, 65536, true},
{"mmio_read_vgic", NULL, mmio_read_vgic_exec, 65536, true},
{"eoi", NULL, eoi_exec, 65536, true},
{"ipi", ipi_prep, ipi_exec, 65536, true},
{"ipi_hw", ipi_hw_prep, ipi_exec, 65536, true},
{"lpi", lpi_prep, lpi_exec, 65536, true},
struct ns_time {
......@@ -265,7 +264,7 @@ 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) {
......@@ -276,15 +275,17 @@ static void loop_test(struct exit_test *test)
start = read_sysreg(cntpct_el0);
while (ntimes--)
while (ntimes < test->times) {
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);
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