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-rw-r--r--tools/perf/tests/builtin-test.c168
1 files changed, 0 insertions, 168 deletions
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 7cb3928d896a..1e9a0ea68fb2 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -30,174 +30,6 @@
#include <sched.h>
-
-#if defined(__x86_64__) || defined(__i386__)
-
-#define barrier() asm volatile("" ::: "memory")
-
-static u64 rdpmc(unsigned int counter)
-{
- unsigned int low, high;
-
- asm volatile("rdpmc" : "=a" (low), "=d" (high) : "c" (counter));
-
- return low | ((u64)high) << 32;
-}
-
-static u64 rdtsc(void)
-{
- unsigned int low, high;
-
- asm volatile("rdtsc" : "=a" (low), "=d" (high));
-
- return low | ((u64)high) << 32;
-}
-
-static u64 mmap_read_self(void *addr)
-{
- struct perf_event_mmap_page *pc = addr;
- u32 seq, idx, time_mult = 0, time_shift = 0;
- u64 count, cyc = 0, time_offset = 0, enabled, running, delta;
-
- do {
- seq = pc->lock;
- barrier();
-
- enabled = pc->time_enabled;
- running = pc->time_running;
-
- if (enabled != running) {
- cyc = rdtsc();
- time_mult = pc->time_mult;
- time_shift = pc->time_shift;
- time_offset = pc->time_offset;
- }
-
- idx = pc->index;
- count = pc->offset;
- if (idx)
- count += rdpmc(idx - 1);
-
- barrier();
- } while (pc->lock != seq);
-
- if (enabled != running) {
- u64 quot, rem;
-
- quot = (cyc >> time_shift);
- rem = cyc & ((1 << time_shift) - 1);
- delta = time_offset + quot * time_mult +
- ((rem * time_mult) >> time_shift);
-
- enabled += delta;
- if (idx)
- running += delta;
-
- quot = count / running;
- rem = count % running;
- count = quot * enabled + (rem * enabled) / running;
- }
-
- return count;
-}
-
-/*
- * If the RDPMC instruction faults then signal this back to the test parent task:
- */
-static void segfault_handler(int sig __maybe_unused,
- siginfo_t *info __maybe_unused,
- void *uc __maybe_unused)
-{
- exit(-1);
-}
-
-static int __test__rdpmc(void)
-{
- volatile int tmp = 0;
- u64 i, loops = 1000;
- int n;
- int fd;
- void *addr;
- struct perf_event_attr attr = {
- .type = PERF_TYPE_HARDWARE,
- .config = PERF_COUNT_HW_INSTRUCTIONS,
- .exclude_kernel = 1,
- };
- u64 delta_sum = 0;
- struct sigaction sa;
-
- sigfillset(&sa.sa_mask);
- sa.sa_sigaction = segfault_handler;
- sigaction(SIGSEGV, &sa, NULL);
-
- fd = sys_perf_event_open(&attr, 0, -1, -1, 0);
- if (fd < 0) {
- pr_err("Error: sys_perf_event_open() syscall returned "
- "with %d (%s)\n", fd, strerror(errno));
- return -1;
- }
-
- addr = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, 0);
- if (addr == (void *)(-1)) {
- pr_err("Error: mmap() syscall returned with (%s)\n",
- strerror(errno));
- goto out_close;
- }
-
- for (n = 0; n < 6; n++) {
- u64 stamp, now, delta;
-
- stamp = mmap_read_self(addr);
-
- for (i = 0; i < loops; i++)
- tmp++;
-
- now = mmap_read_self(addr);
- loops *= 10;
-
- delta = now - stamp;
- pr_debug("%14d: %14Lu\n", n, (long long)delta);
-
- delta_sum += delta;
- }
-
- munmap(addr, page_size);
- pr_debug(" ");
-out_close:
- close(fd);
-
- if (!delta_sum)
- return -1;
-
- return 0;
-}
-
-static int test__rdpmc(void)
-{
- int status = 0;
- int wret = 0;
- int ret;
- int pid;
-
- pid = fork();
- if (pid < 0)
- return -1;
-
- if (!pid) {
- ret = __test__rdpmc();
-
- exit(ret);
- }
-
- wret = waitpid(pid, &status, 0);
- if (wret < 0 || status)
- return -1;
-
- return 0;
-}
-
-#endif
-
static int test__perf_pmu(void)
{
return perf_pmu__test();