The branch stable/13 has been updated by jhb: URL: https://cgit.FreeBSD.org/src/commit/?id=89698430bf833857599ce101cef8147bb1dada18
commit 89698430bf833857599ce101cef8147bb1dada18 Author: Robert Wing <[email protected]> AuthorDate: 2021-05-15 19:58:21 +0000 Commit: John Baldwin <[email protected]> CommitDate: 2023-01-26 18:46:15 +0000 bhyve/snapshot: split up mutex/cond initialization from socket creation Move initialization of the mutex/condition variables required by the save/restore feature to their own function. The unix domain socket that facilitates communication between bhyvectl and bhyve doesn't rely on these variables in order to be functional. Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D30281 (cherry picked from commit fdbc86cf79784f56fab8115f2d565962e1111b2e) --- usr.sbin/bhyve/bhyverun.c | 3 +++ usr.sbin/bhyve/snapshot.c | 25 ++++++++++++++++--------- usr.sbin/bhyve/snapshot.h | 1 + 3 files changed, 20 insertions(+), 9 deletions(-) diff --git a/usr.sbin/bhyve/bhyverun.c b/usr.sbin/bhyve/bhyverun.c index c14c0c60837f..48d9a66ea624 100644 --- a/usr.sbin/bhyve/bhyverun.c +++ b/usr.sbin/bhyve/bhyverun.c @@ -1588,6 +1588,9 @@ main(int argc, char *argv[]) if (restore_file != NULL) destroy_restore_state(&rstate); + /* initialize mutex/cond variables */ + init_snapshot(); + /* * checkpointing thread for communication with bhyvectl */ diff --git a/usr.sbin/bhyve/snapshot.c b/usr.sbin/bhyve/snapshot.c index b70e43adfe2d..b99c8beed2be 100644 --- a/usr.sbin/bhyve/snapshot.c +++ b/usr.sbin/bhyve/snapshot.c @@ -1493,6 +1493,22 @@ checkpoint_thread(void *param) return (NULL); } +void +init_snapshot(void) +{ + int err; + + err = pthread_mutex_init(&vcpu_lock, NULL); + if (err != 0) + errc(1, err, "checkpoint mutex init"); + err = pthread_cond_init(&vcpus_idle, NULL); + if (err != 0) + errc(1, err, "checkpoint cv init (vcpus_idle)"); + err = pthread_cond_init(&vcpus_can_run, NULL); + if (err != 0) + errc(1, err, "checkpoint cv init (vcpus_can_run)"); +} + /* * Create the listening socket for IPC with bhyvectl */ @@ -1508,15 +1524,6 @@ init_checkpoint_thread(struct vmctx *ctx) memset(&addr, 0, sizeof(addr)); - err = pthread_mutex_init(&vcpu_lock, NULL); - if (err != 0) - errc(1, err, "checkpoint mutex init"); - err = pthread_cond_init(&vcpus_idle, NULL); - if (err == 0) - err = pthread_cond_init(&vcpus_can_run, NULL); - if (err != 0) - errc(1, err, "checkpoint cv init"); - socket_fd = socket(PF_UNIX, SOCK_DGRAM, 0); if (socket_fd < 0) { EPRINTLN("Socket creation failed: %s", strerror(errno)); diff --git a/usr.sbin/bhyve/snapshot.h b/usr.sbin/bhyve/snapshot.h index f28b56cf0a7f..3ffd42fbeabc 100644 --- a/usr.sbin/bhyve/snapshot.h +++ b/usr.sbin/bhyve/snapshot.h @@ -127,6 +127,7 @@ int vm_resume_user_devs(struct vmctx *ctx); int get_checkpoint_msg(int conn_fd, struct vmctx *ctx); void *checkpoint_thread(void *param); int init_checkpoint_thread(struct vmctx *ctx); +void init_snapshot(void); int load_restore_file(const char *filename, struct restore_state *rstate);
