#include <time.h>
#include <inttypes.h>
#include <sys/mman.h>
+#include <stdbool.h>
#ifndef SYS_prem_memguard_check
#define SYS_prem_memguard_check 793
#define MGRET_OVER_MEM_MASK 0x1lu
#define MGRET_OVER_TIM_MASK 0x1lu
-#define RANDOM_ARRAY_SIZE 16777216 // 16M * 8 = 128 MB array
+char memory[128*10204*1024];
-uint64_t random_values[RANDOM_ARRAY_SIZE];
-
-
-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;
+struct mg_ret {
+ uint32_t time;
+ uint32_t mem;
+ bool time_ovf;
+ bool mem_ovf;
};
-
-
-static inline void decode_retval(uint64_t retval, uint64_t * timval, uint64_t * cntval){
- *timval = (retval >> MGRET_TIM_POS) & MGRET_TIM_MASK;
- *cntval = (retval >> MGRET_MEM_POS) & MGRET_MEM_MASK;
+static struct mg_ret mgret(uint64_t retval)
+{
+ struct mg_ret mgr = {};
+ mgr.time = (retval >> MGRET_TIM_POS) & MGRET_TIM_MASK;
+ mgr.mem = (retval >> MGRET_MEM_POS) & MGRET_MEM_MASK;
+ mgr.time_ovf = (retval >> MGRET_OVER_TIM_POS) & 1;
+ mgr.mem_ovf = (retval >> MGRET_OVER_MEM_POS) & 1;
+ return mgr;
}
-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 {
+void compute_kernel(int time_us)
+{
+ struct timespec ts;
+ uint64_t current_us, end_us;
clock_gettime(CLOCK_MONOTONIC, &ts);
- current_us = ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
- } while (current_us < end_us);
+ end_us = ts.tv_sec * 1000000 + ts.tv_nsec / 1000 + time_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){
- uint64_t sum = 0;
-
- for(int i = 0; i < lines; i++){
- sum += random_values[(i*8) % RANDOM_ARRAY_SIZE];
- }
- return sum;
+void read_memory(long lines)
+{
+ uint64_t sum = 0;
+
+ for (uint64_t i = 0; i < lines; i++) {
+ sum += memory[(i * 64) % sizeof(memory)];
+ }
+ /* Do not optimize this function out */
+ volatile uint64_t x = sum;
+ (void)x;
}
-void random_memory_kernel(long lines) {
- uint32_t index;
- uint64_t sum = 0;
+void write_memory(long lines)
+{
+ uint64_t *ptr;
+ for (uint64_t i = 0; i < lines; i++) {
+ ptr = (void*)&memory[(i * 64) % sizeof(memory)];
+ *ptr = i;
+ }
+}
- for(long i=0; i<lines; i++) {
- index = (uint32_t)rand();
- index = index % RANDOM_ARRAY_SIZE;
- sum += random_values[index];
- }
+void read_memory_rnd(long lines)
+{
+ static unsigned rnd;
+ uint64_t sum = 0;
+
+ for (long i = 0; i < lines; i++) {
+ rnd = (rnd + 523) * 253573;
+ sum += memory[rnd % sizeof(memory)];
+ }
+ /* Do not optimize this function out */
+ volatile uint64_t x = sum;
+ (void)x;
}
/* Memguard flags */
-#define MGF_PERIODIC (1 << 0) /* Chooses between periodic or one-shot budget replenishment */
-#define MGF_MASK_INT (1 << 1) /* Mask (disable) low priority interrupts until next memguard call */
+#define MGF_PERIODIC \
+ (1 << 0) /* Chooses between periodic or one-shot budget replenishment */
+#define MGF_MASK_INT \
+ (1 \
+ << 1) /* Mask (disable) low priority interrupts until next memguard call */
+
+long prem_memguard_check(unsigned long timeout, unsigned long memory_budget,
+ unsigned long flags)
+{
+ return syscall(SYS_prem_memguard_check, timeout, memory_budget, flags);
+}
-long prem_memguard_check(unsigned long timeout,
- unsigned long memory_budget,
- unsigned long flags)
+static void print_test_info(uint64_t timeout_us, uint64_t mem_budget, uint64_t flags,
+ int64_t retval, const char *code)
{
- return syscall(SYS_prem_memguard_check, timeout, memory_budget, flags);
+ char call[80];
+ snprintf(call, sizeof(call), "memguard(%luus, %lumiss, %c%c):",
+ timeout_us, mem_budget,
+ flags & MGF_PERIODIC ? 'P' : '-',
+ flags & MGF_MASK_INT ? 'I' : '-'
+ );
+ struct mg_ret r = mgret(retval);
+ printf("%-40s %-25s ⇒ time:%8u%c mem:%8u%c\n",
+ call, code,
+ r.time, r.time_ovf ? '!' : ' ',
+ r.mem, r.mem_ovf ? '!' : ' ');
}
-#define MGTEST(timeout_us, mem_budget, flags, code) \
- do { \
- long retval = prem_memguard_check(timeout_us, mem_budget, flags); \
- code; \
- retval = prem_memguard_check(0, 0, 0); \
- printf("%-31s flags:%d m_ovr:%ld t_ovr:%ld mem:%d->%ld time:%d->%ld\n", \
- #code, flags, \
- (retval >> MGRET_OVER_MEM_POS) & 1, \
- (retval >> MGRET_OVER_TIM_POS) & 1, \
- mem_budget, (retval >> MGRET_MEM_POS) & MGRET_MEM_MASK, \
- timeout_us, (retval >> MGRET_TIM_POS) & MGRET_TIM_MASK); \
- } while (0)
+#define MGTEST(timeout_us, mem_budget, flags, code) \
+ ({ \
+ long retval; \
+ retval = prem_memguard_check(timeout_us, mem_budget, flags); \
+ code; \
+ retval = prem_memguard_check(0, 0, 0); \
+ print_test_info(timeout_us, mem_budget, flags, retval, #code); \
+ mgret(retval); \
+ })
int main(int argc, char *argv[])
{
- cpu_set_t set;
- int cpu = 0;
-
- char bla[1];
-
- for (int i = 0; i < RANDOM_ARRAY_SIZE; i++)
- random_values[i] = i;
-
- 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);
-
- volatile long x;
- MGTEST(100000, 1000, MGF_PERIODIC | MGF_MASK_INT, compute_kernel(1000));
- MGTEST(1050000, 2136960000, 0, compute_kernel(1000));
- MGTEST(100000, 500, MGF_PERIODIC, memory_kernel(100000000));
-
- for (int i = 1; i <= 10; i++)
- MGTEST(1000000, 500, 0, x=memory_kernel(1000000));
-
- MGTEST(1000000, 500, 0, x=memory_kernel(100000000));
- MGTEST(1000000, 100000, 0, random_memory_kernel(100000000));
- MGTEST(1000000, 100000000, 0, random_memory_kernel(100000000));
-
- return 0;
+ cpu_set_t set;
+ int cpu = 0;
+
+ for (int i = 0; i < sizeof(memory); i += 64)
+ memory[i] = 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);
+
+ for (uint64_t flags = 0; flags < 4; flags++) {
+ compute_kernel(1); /* warm up */
+ MGTEST(5000, 10000, flags, compute_kernel(1000));
+ MGTEST(500, 10000, flags, compute_kernel(1000));
+ MGTEST(5000, 10000, flags, compute_kernel(2000));
+ MGTEST(500, 10000, flags, compute_kernel(2000));
+
+ MGTEST(100000, 500000, flags, read_memory(100000));
+ MGTEST(100000, 50000, flags, read_memory(100000));
+ MGTEST(100000, 500000, flags, read_memory_rnd(100000));
+ MGTEST(100000, 50000, flags, read_memory_rnd(100000));
+ MGTEST(100000, 500000, flags, write_memory(100000));
+ MGTEST(100000, 50000, flags, write_memory(100000));
+
+ MGTEST(100000, 5000000, flags, read_memory(1000000));
+ MGTEST(100000, 500000, flags, read_memory(1000000));
+ MGTEST(100000, 5000000, flags, read_memory_rnd(1000000));
+ MGTEST(100000, 500000, flags, read_memory_rnd(1000000));
+ MGTEST(100000, 5000000, flags, write_memory(1000000));
+ MGTEST(100000, 500000, flags, write_memory(1000000));
+
+ printf("\n");
+ }
+ return 0;
}
projects / hercules2020 / jailhouse-build.git / commitdiff