#include <stdlib.h>
#include <unistd.h>
#include <time.h>
+#include <inttypes.h>
#ifndef SYS_prem_memguard_check
#define SYS_prem_memguard_check 793
#endif
+/* Return value:
+ * 0-31 - Total time
+ * 32-55 - Sum of memory events
+ * 61 - Memory budget overrun
+ * 62 - Timeout
+ * 63 - Error */
+#define RET_TIM_POS 0
+#define RET_MEM_POS 32
+#define RET_OVER_MEM_POS 61
+#define RET_OVER_TIM_POS 62
+
+#define RET_TIM_MASK 0xFFFFFFFFlu
+#define RET_MEM_MASK 0xFFFFFFlu
+#define RET_OVER_MEM_MASK 0x1lu
+#define RET_OVER_TIM_MASK 0x1lu
+
#define RANDOM_ARRAY_SIZE 16777216 // 16M * 8 = 128 MB array
uint64_t random_values[RANDOM_ARRAY_SIZE];
volatile uint64_t sum;
+
+
enum prem_phase {
PREM_COMPATIBLE = 0,
PREM_MEMORY = 1,
PREM_COMPUTE = 2,
};
+struct test_case{
+ uint64_t budget_time;
+ uint64_t budget_memory;
+ uint8_t flags;
+ uint64_t measured_time;
+ uint64_t measured_memory;
+ uint8_t status;
+};
+
+
+
+static inline void decode_retval(uint64_t retval, uint64_t * timval, uint64_t * cntval){
+ *timval = (retval >> RET_TIM_POS) & RET_TIM_MASK;
+ *cntval = (retval >> RET_MEM_POS) & RET_MEM_MASK;
+}
+
void compute_kernel(int time_ms){
struct timespec ts;
uint64_t current_us, end_us;
clock_gettime(CLOCK_MONOTONIC, &ts);
end_us = ts.tv_sec * 1000000 + ts.tv_nsec / 1000 + time_ms * 1000;
- do{
- clock_gettime(CLOCK_MONOTONIC, &ts);
- current_us = ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
- }while(current_us < end_us);
+ do {
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ current_us = ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
+ } while (current_us < end_us);
}
long memory_kernel(long lines){
void random_memory_kernel(long lines) {
uint32_t index;
-
+
for(long i=0; i<lines; i++) {
index = (uint32_t)rand();
index = index % RANDOM_ARRAY_SIZE;
}
}
-long prem_memguard_check(unsigned long phase,
+/* Memguard flags */
+#define MGF_PERIODIC (1 << 0) /* Chooses between periodic or one-shot budget replenishment */
+#define MGF_RET_STATS (1 << 1) /* Return statistics since the last call (cache misses, time, ...?) */
+#define MGF_MASK_INT (1 << 2) /* Mask (disable) low priority interrupts until next memguard call */
+
+long prem_memguard_check(unsigned long timeout,
unsigned long memory_budget,
- unsigned long timeout)
+ unsigned long flags)
{
- return syscall(SYS_prem_memguard_check, phase, memory_budget, timeout);
+ return syscall(SYS_prem_memguard_check, timeout, memory_budget, flags);
}
int main(int argc, char *argv[])
{
cpu_set_t set;
- int cpu = 0;
+ int cpu = 0;
+ long retval;
+ uint64_t timval, cntval;
- if (argc > 1)
- cpu = atoi(argv[1]);
+ if (argc > 1)
+ cpu = atoi(argv[1]);
- /* Ensure that memory phase starts and ends on the same CPU */
- CPU_ZERO(&set);
- CPU_SET(cpu, &set);
- if (sched_setaffinity(getpid(), sizeof(set), &set) < 0)
- err(1, "sched_setaffinity");
- printf("Pinned to CPU %d\n", cpu);
+ /* Ensure that memory phase starts and ends on the same CPU */
+ CPU_ZERO(&set);
+ CPU_SET(cpu, &set);
+ if (sched_setaffinity(getpid(), sizeof(set), &set) < 0)
+ err(1, "sched_setaffinity");
+ printf("Pinned to CPU %d\n", cpu);
printf("X1\n");
fflush(stdout);
- //prem_memguard_check(950000, 1933440000, 1);
- prem_memguard_check(950000, 1933440000, 1);
+ //prem_memguard_check(950000, 1933440000, 1);
+ retval = prem_memguard_check(100000, 1000, MGF_PERIODIC | MGF_MASK_INT);
compute_kernel(1000);
- prem_memguard_check(0, 0, 1);
-
+ //prem_memguard_check(0, 0, 1);
+
+ /* First result does not make sense */
+ decode_retval(retval, &timval, &cntval);
+ printf("tim: %lu cnt: %lu\n", timval, cntval);
+
printf("X2\n");
fflush(stdout);
//prem_memguard_check(1050000, 2136960000, 1);
- prem_memguard_check(1050000, 2136960000, 1);
+ retval = prem_memguard_check(1050000, 2136960000, 0);
compute_kernel(1000);
- prem_memguard_check(0, 0, 1);
+ //prem_memguard_check(0, 0, 1);
+ decode_retval(retval, &timval, &cntval);
+ printf("tim: %lu cnt: %lu\n", timval, cntval);
+
printf("X3\n");
fflush(stdout);
//prem_memguard_check(1000000, 500, 1);
- prem_memguard_check(1000000, 5000000, 1);
+ retval = prem_memguard_check(100000, 500, MGF_PERIODIC);
memory_kernel(100000000);
- prem_memguard_check(0, 0, 1);
+ //prem_memguard_check(0, 0, 1);
+ decode_retval(retval, &timval, &cntval);
+ printf("tim: %lu cnt: %lu\n", timval, cntval);
+
printf("X4\n");
fflush(stdout);
//prem_memguard_check(1000000, 1500, 1);
- prem_memguard_check(1000000, 15000000, 1);
+ retval = prem_memguard_check(1000000, 15000000, 0);
memory_kernel(100000000);
- prem_memguard_check(0, 0, 1);
+ //prem_memguard_check(0, 0, 1);
+ decode_retval(retval, &timval, &cntval);
+ printf("tim: %lu cnt: %lu\n", timval, cntval);
+
printf("X5\n");
fflush(stdout);
//prem_memguard_check(1000000, 10000, 1);
- prem_memguard_check(1000000, 100000, 1);
+ retval = prem_memguard_check(1000000, 100000, 0);
random_memory_kernel(100000000);
- prem_memguard_check(0, 0, 1);
+ //prem_memguard_check(0, 0, 1);
+ decode_retval(retval, &timval, &cntval);
+ printf("tim: %lu cnt: %lu\n", timval, cntval);
+
printf("X6\n");
fflush(stdout);
//prem_memguard_check(1000000, 10000000, 1);
- prem_memguard_check(1000000, 100000000, 1);
+ retval = prem_memguard_check(1000000, 100000000, 0);
random_memory_kernel(100000000);
- prem_memguard_check(0, 0, 1);
- return 0;
+ prem_memguard_check(0, 0, 0);
+
+ return 0;
}
projects / hercules2020 / jailhouse-build.git / blobdiff