diff options
Diffstat (limited to 'tools/testing/selftests/kvm/include/userfaultfd_util.h')
| -rw-r--r-- | tools/testing/selftests/kvm/include/userfaultfd_util.h | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/tools/testing/selftests/kvm/include/userfaultfd_util.h b/tools/testing/selftests/kvm/include/userfaultfd_util.h index 877449c34592..60f7f9d435dc 100644 --- a/tools/testing/selftests/kvm/include/userfaultfd_util.h +++ b/tools/testing/selftests/kvm/include/userfaultfd_util.h @@ -5,9 +5,6 @@ * Copyright (C) 2018, Red Hat, Inc. * Copyright (C) 2019-2022 Google LLC */ - -#define _GNU_SOURCE /* for pipe2 */ - #include <inttypes.h> #include <time.h> #include <pthread.h> @@ -17,17 +14,27 @@ typedef int (*uffd_handler_t)(int uffd_mode, int uffd, struct uffd_msg *msg); -struct uffd_desc { +struct uffd_reader_args { int uffd_mode; int uffd; - int pipefds[2]; useconds_t delay; uffd_handler_t handler; - pthread_t thread; + /* Holds the read end of the pipe for killing the reader. */ + int pipe; +}; + +struct uffd_desc { + int uffd; + uint64_t num_readers; + /* Holds the write ends of the pipes for killing the readers. */ + int *pipefds; + pthread_t *readers; + struct uffd_reader_args *reader_args; }; struct uffd_desc *uffd_setup_demand_paging(int uffd_mode, useconds_t delay, void *hva, uint64_t len, + uint64_t num_readers, uffd_handler_t handler); void uffd_stop_demand_paging(struct uffd_desc *uffd); |