diff options
Diffstat (limited to 'src/openclose.c')
| -rw-r--r-- | src/openclose.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/openclose.c b/src/openclose.c index dad0cb9..8290d00 100644 --- a/src/openclose.c +++ b/src/openclose.c @@ -33,6 +33,8 @@ #include "fmm.h" static const char kfd_device_name[] = "/dev/kfd"; +static const char tmp_file[] = "/var/lock/.amd_hsa_thunk_lock"; +int amd_hsa_thunk_lock_fd = 0; HSAKMT_STATUS HSAKMTAPI @@ -59,6 +61,11 @@ hsaKmtOpenKFD(void) { result = HSAKMT_STATUS_KERNEL_IO_CHANNEL_NOT_OPENED; } + + amd_hsa_thunk_lock_fd = open(tmp_file, + O_CREAT | //create the file if it's not present. + O_RDWR, //only need write access for the internal locking semantics. + S_IRUSR | S_IWUSR); //permissions on the file, 600 here. } else { @@ -84,6 +91,12 @@ hsaKmtCloseKFD(void) if (--kfd_open_count == 0) { close(kfd_fd); + + if (amd_hsa_thunk_lock_fd > 0) { + close(amd_hsa_thunk_lock_fd); + unlink(tmp_file); + } + } result = HSAKMT_STATUS_SUCCESS; |