Lines Matching +full:cpu +full:- +full:nr
7 * the COPYING file in the top-level directory.
13 * There are three threads running per CPU:
15 * 1) one per-CPU thread takes a per-page pthread_mutex in a random
17 * area_src), and increments a per-page counter in the same page,
20 * 2) another per-CPU thread handles the userfaults generated by
24 * 3) one last per-CPU thread transfers the memory in the background
26 * 2). Each cpu thread takes cares of transferring a portion of the
34 * per-CPU threads 1 by triggering userfaults inside
47 * # 10MiB-~6GiB 999 bounces, continue forever unless an error triggers
108 * to avoid non alignment faults on non-x86 archs.
114 sizeof(unsigned long long) - 1) & \
116 - 1)))
201 * MADV_DONTEED won't work. So exercise -EEXIST on a alias in hugetlb_alias_mapping()
203 * this way we'll exercise the -EEXEC at the fs level. in hugetlb_alias_mapping()
224 MAP_ANONYMOUS | MAP_SHARED, -1, 0); in shmem_allocate_area()
276 unsigned long cpu = (unsigned long) arg; in locking_thread() local
286 seed = (unsigned int) time(NULL) - bounces; in locking_thread()
288 seed += cpu; in locking_thread()
294 page_nr = -bounces; in locking_thread()
296 page_nr += cpu * nr_pages_per_cpu; in locking_thread()
355 page_nr, cpu, area_dst + page_nr * page_size, in locking_thread()
375 if (time(NULL) - start > 1) in locking_thread()
379 time(NULL) - start); in locking_thread()
388 uffd_test_ops->alias_mapping(&uffdio_copy->dst, in retry_copy_page()
389 uffdio_copy->len, in retry_copy_page()
393 if (uffdio_copy->copy != -EEXIST) in retry_copy_page()
395 uffdio_copy->copy), exit(1); in retry_copy_page()
398 uffdio_copy->copy), exit(1); in retry_copy_page()
416 if (uffdio_copy.copy != -EEXIST) in __copy_page()
444 unsigned long cpu = (unsigned long) arg; in uffd_poll_thread() local
455 pollfd[1].fd = pipefd[cpu*2]; in uffd_poll_thread()
459 ret = poll(pollfd, 2, -1); in uffd_poll_thread()
487 offset = (char *)(unsigned long)msg.arg.pagefault.address - in uffd_poll_thread()
489 offset &= ~(page_size-1); in uffd_poll_thread()
500 uffd_reg.range.len = msg.arg.remove.end - in uffd_poll_thread()
542 offset = (char *)(unsigned long)msg.arg.pagefault.address - in uffd_read_thread()
544 offset &= ~(page_size-1); in uffd_read_thread()
553 unsigned long cpu = (unsigned long) arg; in background_thread() local
556 for (page_nr = cpu * nr_pages_per_cpu; in background_thread()
557 page_nr < (cpu+1) * nr_pages_per_cpu; in background_thread()
566 unsigned long cpu; in stress() local
573 for (cpu = 0; cpu < nr_cpus; cpu++) { in stress()
574 if (pthread_create(&locking_threads[cpu], &attr, in stress()
575 locking_thread, (void *)cpu)) in stress()
578 if (pthread_create(&uffd_threads[cpu], &attr, in stress()
579 uffd_poll_thread, (void *)cpu)) in stress()
582 if (pthread_create(&uffd_threads[cpu], &attr, in stress()
584 &_userfaults[cpu])) in stress()
588 if (pthread_create(&background_threads[cpu], &attr, in stress()
589 background_thread, (void *)cpu)) in stress()
592 for (cpu = 0; cpu < nr_cpus; cpu++) in stress()
593 if (pthread_join(background_threads[cpu], NULL)) in stress()
601 * area_src (but they're guaranteed to get -EEXIST from in stress()
605 if (uffd_test_ops->release_pages(area_src)) in stress()
608 for (cpu = 0; cpu < nr_cpus; cpu++) { in stress()
611 if (write(pipefd[cpu*2+1], &c, 1) != 1) { in stress()
615 if (pthread_join(uffd_threads[cpu], &_userfaults[cpu])) in stress()
618 if (pthread_cancel(uffd_threads[cpu])) in stress()
620 if (pthread_join(uffd_threads[cpu], NULL)) in stress()
626 for (cpu = 0; cpu < nr_cpus; cpu++) in stress()
627 if (pthread_join(locking_threads[cpu], NULL)) in stress()
671 * For non-cooperative userfaultfd test we fork() a process that will
686 * test robustness use case - we release monitored area, fork a process
693 unsigned long nr; in faulting_process() local
714 lastnr = (unsigned long)-1; in faulting_process()
717 for (nr = 0; nr < split_nr_pages; nr++) { in faulting_process()
720 if (nr == lastnr) { in faulting_process()
725 lastnr = nr; in faulting_process()
727 if (copy_page(uffd, nr * page_size)) in faulting_process()
736 count = *area_count(area_dst, nr); in faulting_process()
737 if (count != count_verify[nr]) { in faulting_process()
739 "nr %lu memory corruption %Lu %Lu\n", in faulting_process()
740 nr, count, in faulting_process()
741 count_verify[nr]), exit(1); in faulting_process()
756 for (; nr < nr_pages; nr++) { in faulting_process()
757 count = *area_count(area_dst, nr); in faulting_process()
758 if (count != count_verify[nr]) { in faulting_process()
760 "nr %lu memory corruption %Lu %Lu\n", in faulting_process()
761 nr, count, in faulting_process()
762 count_verify[nr]), exit(1); in faulting_process()
766 if (uffd_test_ops->release_pages(area_dst)) in faulting_process()
769 for (nr = 0; nr < nr_pages; nr++) { in faulting_process()
770 if (my_bcmp(area_dst + nr * page_size, zeropage, page_size)) in faulting_process()
771 fprintf(stderr, "nr %lu is not zero\n", nr), exit(1); in faulting_process()
781 uffd_test_ops->alias_mapping(&uffdio_zeropage->range.start, in retry_uffdio_zeropage()
782 uffdio_zeropage->range.len, in retry_uffdio_zeropage()
785 if (uffdio_zeropage->zeropage != -EEXIST) in retry_uffdio_zeropage()
787 uffdio_zeropage->zeropage), exit(1); in retry_uffdio_zeropage()
790 uffdio_zeropage->zeropage), exit(1); in retry_uffdio_zeropage()
800 has_zeropage = uffd_test_ops->expected_ioctls & (1 << _UFFDIO_ZEROPAGE); in __uffdio_zeropage()
812 if (uffdio_zeropage.zeropage == -EEXIST) in __uffdio_zeropage()
813 fprintf(stderr, "UFFDIO_ZEROPAGE -EEXIST\n"), in __uffdio_zeropage()
819 if (uffdio_zeropage.zeropage != -EINVAL) in __uffdio_zeropage()
821 "UFFDIO_ZEROPAGE not -EINVAL %Ld\n", in __uffdio_zeropage()
859 if (uffd_test_ops->release_pages(area_dst)) in userfaultfd_zeropage_test()
870 expected_ioctls = uffd_test_ops->expected_ioctls; in userfaultfd_zeropage_test()
900 if (uffd_test_ops->release_pages(area_dst)) in userfaultfd_events_test()
915 expected_ioctls = uffd_test_ops->expected_ioctls; in userfaultfd_events_test()
960 if (uffd_test_ops->release_pages(area_dst)) in userfaultfd_sig_test()
974 expected_ioctls = uffd_test_ops->expected_ioctls; in userfaultfd_sig_test()
984 if (uffd_test_ops->release_pages(area_dst)) in userfaultfd_sig_test()
1017 unsigned long nr; in userfaultfd_stress() local
1019 unsigned long cpu; in userfaultfd_stress() local
1023 uffd_test_ops->allocate_area((void **)&area_src); in userfaultfd_stress()
1026 uffd_test_ops->allocate_area((void **)&area_dst); in userfaultfd_stress()
1039 for (nr = 0; nr < nr_pages; nr++) { in userfaultfd_stress()
1040 *area_mutex(area_src, nr) = (pthread_mutex_t) in userfaultfd_stress()
1042 count_verify[nr] = *area_count(area_src, nr) = 1; in userfaultfd_stress()
1046 * zero, so leave a placeholder below always non-zero in userfaultfd_stress()
1050 *(area_count(area_src, nr) + 1) = 1; in userfaultfd_stress()
1058 for (cpu = 0; cpu < nr_cpus; cpu++) { in userfaultfd_stress()
1059 if (pipe2(&pipefd[cpu*2], O_CLOEXEC | O_NONBLOCK)) { in userfaultfd_stress()
1078 while (bounces--) { in userfaultfd_stress()
1106 expected_ioctls = uffd_test_ops->expected_ioctls; in userfaultfd_stress()
1131 * return -EEXIST). The problem comes at the next in userfaultfd_stress()
1136 * area_src would lead to -EEXIST failure during the in userfaultfd_stress()
1147 if (uffd_test_ops->release_pages(area_dst)) in userfaultfd_stress()
1170 for (nr = 0; nr < nr_pages; nr++) { in userfaultfd_stress()
1171 if (*area_count(area_dst, nr) != count_verify[nr]) { in userfaultfd_stress()
1174 *area_count(area_src, nr), in userfaultfd_stress()
1175 count_verify[nr], in userfaultfd_stress()
1176 nr); in userfaultfd_stress()
1193 for (cpu = 0; cpu < nr_cpus; cpu++) in userfaultfd_stress()
1194 printf(" %lu", userfaults[cpu]); in userfaultfd_stress()
1207 * Copied from mlock2-tests.c