-/* Run this as: for i in $(seq 0 5); do prem-test $i & done */
-
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <err.h>
#include <sched.h>
#include <inttypes.h>
#include <sys/mman.h>
#include <stdbool.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <error.h>
-#ifndef SYS_prem_memguard_check
-#define SYS_prem_memguard_check 793
+#ifndef SYS_memguard
+#define SYS_memguard 793
#endif
/* Return value:
- * 0-31 - Total time
- * 32-55 - Sum of memory events
+ * 0-31 - Sum of memory events
+ * 32-55 - Total time
* 61 - Memory budget overrun
* 62 - Timeout
* 63 - Error */
-#define MGRET_TIM_POS 0
-#define MGRET_MEM_POS 32
+#define MGRET_MEM_POS 0
+#define MGRET_TIM_POS 32
#define MGRET_OVER_MEM_POS 61
#define MGRET_OVER_TIM_POS 62
+#define MGRET_ERROR_POS 63
-#define MGRET_TIM_MASK 0xFFFFFFFFlu
-#define MGRET_MEM_MASK 0xFFFFFFlu
-#define MGRET_OVER_MEM_MASK 0x1lu
-#define MGRET_OVER_TIM_MASK 0x1lu
+#define MGRET_TIM_MASK (0x00FFFFFFul << MGRET_TIM_POS)
+#define MGRET_MEM_MASK (0xFFFFFFFFul << MGRET_MEM_POS)
+#define MGRET_OVER_MEM_MASK (1ul << MGRET_OVER_MEM_POS)
+#define MGRET_OVER_TIM_MASK (1ul << MGRET_OVER_TIM_POS)
+#define MGRET_ERROR_MASK (1ul << MGRET_ERROR_POS)
+
+#define MAX_CORES 6
char memory[128*10204*1024];
+static pthread_barrier_t barrier;
+
struct mg_ret {
uint32_t time;
uint32_t mem;
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 = (retval & MGRET_TIM_MASK) >> MGRET_TIM_POS;
+ mgr.mem = (retval & MGRET_MEM_MASK) >> MGRET_MEM_POS;
mgr.time_ovf = (retval >> MGRET_OVER_TIM_POS) & 1;
mgr.mem_ovf = (retval >> MGRET_OVER_MEM_POS) & 1;
return mgr;
(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)
+long memguard(unsigned long timeout, unsigned long memory_budget,
+ unsigned long flags)
+{
+ return syscall(SYS_memguard, timeout, memory_budget, flags);
+}
+
+void wvtest_pass(bool cond, const char* file, int line, const char* str)
{
- return syscall(SYS_prem_memguard_check, timeout, memory_budget, flags);
+ printf("! %s:%d %s %s\n", file, line, str, cond ? "ok" : "FAILURE");
}
+#define WVPASS(cond) wvtest_pass(cond, __FILE__, __LINE__, #cond)
+
static void print_test_info(uint64_t timeout_us, uint64_t mem_budget, uint64_t flags,
int64_t retval, const char *code)
{
flags & MGF_MASK_INT ? 'I' : '-'
);
struct mg_ret r = mgret(retval);
- printf("%-40s %-25s ⇒ time:%8u%c mem:%8u%c\n",
- call, code,
+ printf("Testing \"CPU%d: %-40s %-25s ⇒ time:%8u%c mem:%8u%c\" in %s:\n",
+ sched_getcpu(), call, code,
r.time, r.time_ovf ? '!' : ' ',
- r.mem, r.mem_ovf ? '!' : ' ');
+ r.mem, r.mem_ovf ? '!' : ' ',
+ __FILE__);
+ WVPASS((retval & MGRET_ERROR_MASK) == 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); \
+#define MGTEST(timeout_us, mem_budget, flags, code) \
+ ({ \
+ long retval; \
+ retval = memguard(timeout_us, mem_budget, flags); \
+ code; \
+ retval = memguard(0, 0, 0); \
print_test_info(timeout_us, mem_budget, flags, retval, #code); \
- mgret(retval); \
+ mgret(retval); \
})
-int main(int argc, char *argv[])
+void *test_thread(void *ptr)
{
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]);
+ int cpu = (intptr_t)ptr;
- /* Ensure that memory phase starts and ends on the same CPU */
+ /* Ensure that our test thread does not migrate to another CPU
+ * during memguarding */
CPU_ZERO(&set);
CPU_SET(cpu, &set);
- if (sched_setaffinity(getpid(), sizeof(set), &set) < 0)
+ if (sched_setaffinity(0, sizeof(set), &set) < 0)
err(1, "sched_setaffinity");
- printf("Pinned to CPU %d\n", cpu);
+
+ pthread_barrier_wait(&barrier);
+
+ struct mg_ret r;
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));
+
+ r = MGTEST(500, 10000, flags, compute_kernel(17*1000*1000));
+ continue;
+
+ ///////////////////////////////////////////////////////
+ r = MGTEST(5000, 10000, flags, compute_kernel(1000));
+ WVPASS(!r.time_ovf);
+ WVPASS(r.time > 900);
+
+ r = MGTEST(500, 10000, flags, compute_kernel(1000));
+ WVPASS(r.time_ovf);
+ WVPASS(r.time > 900);
+
+ r = MGTEST(5000, 10000, flags, compute_kernel(2000));
+ WVPASS(!r.time_ovf);
+ WVPASS(r.time > 1900);
+
+ r = MGTEST(500, 10000, flags, compute_kernel(2000));
+ WVPASS(r.time_ovf);
+ WVPASS(r.time > 1900);
+
+ ///////////////////////////////////////////////////////
+ r = MGTEST(100000, 500000, flags, read_memory(100000));
+ WVPASS(!r.mem_ovf);
+ WVPASS(r.mem >= 90000);
+
+ r = MGTEST(100000, 50000, flags, read_memory(100000));
+ WVPASS(r.mem_ovf);
+ WVPASS(r.mem >= 90000);
+
+ r = MGTEST(100000, 500000, flags, read_memory_rnd(100000));
+ WVPASS(!r.mem_ovf);
+ WVPASS(r.mem >= 90000);
+
+ r = MGTEST(100000, 50000, flags, read_memory_rnd(100000));
+ WVPASS(r.mem_ovf);
+ WVPASS(r.mem >= 90000);
+
+ r = MGTEST(100000, 500000, flags, write_memory(100000));
+ WVPASS(!r.mem_ovf);
+ WVPASS(r.mem >= 90000);
+
+ r = MGTEST(100000, 50000, flags, write_memory(100000));
+ WVPASS(r.mem_ovf);
+ WVPASS(r.mem >= 90000);
+
+
+ ///////////////////////////////////////////////////////
+ r = MGTEST(100000, 5000000, flags, read_memory(1000000));
+ WVPASS(!r.mem_ovf);
+ WVPASS(r.mem >= 900000);
+
+ r = MGTEST(100000, 500000, flags, read_memory(1000000));
+ WVPASS(r.mem_ovf);
+ WVPASS(r.mem >= 900000);
+
+ r = MGTEST(100000, 5000000, flags, read_memory_rnd(1000000));
+ WVPASS(!r.mem_ovf);
+ WVPASS(r.mem >= 900000);
+
+ r = MGTEST(100000, 500000, flags, read_memory_rnd(1000000));
+ WVPASS(r.mem_ovf);
+ WVPASS(r.mem >= 900000);
+
+ r = MGTEST(100000, 5000000, flags, write_memory(1000000));
+ WVPASS(!r.mem_ovf);
+ WVPASS(r.mem >= 900000);
+
+ r = MGTEST(100000, 500000, flags, write_memory(1000000));
+ WVPASS(r.mem_ovf);
+ WVPASS(r.mem >= 900000);
printf("\n");
}
+
+ /* Throttling tests */
+ struct mg_ret r1, r2, r3;
+ r1 = MGTEST(10000, 9000, MGF_PERIODIC | MGF_MASK_INT, read_memory(100000));
+ WVPASS(r1.time > 100*1000);
+ r2 = MGTEST(10000, 3000, MGF_PERIODIC | MGF_MASK_INT, read_memory(100000));
+ WVPASS(r2.time > 2 * r1.time);
+ r3 = MGTEST(10000, 1000, MGF_PERIODIC | MGF_MASK_INT, read_memory(100000));
+ WVPASS(r3.time > 2 * r2.time);
+
+ return NULL;
+}
+
+int main(int argc, char *argv[])
+{
+ int cpu_mask = 1;
+ int cpu_count = 0;
+ pthread_t threads[MAX_CORES];
+
+ /* TODO: currently shared memory */
+ for (int i = 0; i < sizeof(memory); i += 64)
+ memory[i] = 1;
+
+ if (argc > 1)
+ cpu_mask = strtol(argv[1], NULL, 16);
+
+ for (int i = 0; i < MAX_CORES; i++) {
+ if (cpu_mask & (1 << i)) {
+ cpu_count++;
+ }
+ }
+
+ printf("CPU count:%d CPU mask:%#x\n", cpu_count, cpu_mask);
+ int s = pthread_barrier_init(&barrier, NULL, cpu_count);
+ if (s != 0)
+ error(1, s, "pthread_barrier_init");
+
+ for (intptr_t i = 0; i < MAX_CORES; i++) {
+ if (cpu_mask & (1 << i))
+ pthread_create(&threads[i], NULL, test_thread, (void *)i);
+ }
+
+ for (int i = 0; i < MAX_CORES; i++) {
+ if (cpu_mask & (1 << i)) {
+ pthread_join(threads[i], NULL);
+ }
+ }
+
return 0;
}
projects / hercules2020 / jailhouse-build.git / blobdiff