#include "fio.h"
#include "os.h"
-extern unsigned long long mlock_size;
static void *pinned_mem;
void fio_unpin_memory(void)
if (phys_mem) {
if ((mlock_size + 128 * 1024 * 1024) > phys_mem) {
mlock_size = phys_mem - 128 * 1024 * 1024;
- fprintf(f_out, "fio: limiting mlocked memory to %lluMiB\n", mlock_size >> 20);
+ log_info("fio: limiting mlocked memory to %lluMiB\n", mlock_size >> 20);
}
}
*/
int allocate_io_mem(struct thread_data *td)
{
- if (td->mem_type == MEM_MALLOC)
+ if (td->o.mem_type == MEM_MALLOC)
td->orig_buffer = malloc(td->orig_buffer_size);
- else if (td->mem_type == MEM_SHM) {
- td->shm_id = shmget(IPC_PRIVATE, td->orig_buffer_size, IPC_CREAT | 0600);
+ else if (td->o.mem_type == MEM_SHM || td->o.mem_type == MEM_SHMHUGE) {
+ int flags = IPC_CREAT | SHM_R | SHM_W;
+
+ if (td->o.mem_type == MEM_SHMHUGE)
+ flags |= SHM_HUGETLB;
+
+ td->shm_id = shmget(IPC_PRIVATE, td->orig_buffer_size, flags);
if (td->shm_id < 0) {
- td_verror(td, errno);
- perror("shmget");
+ td_verror(td, errno, "shmget");
+ if (geteuid() != 0 && errno == ENOMEM)
+ log_err("fio: you may need to run this job as root\n");
+ if (errno == EINVAL && td->o.mem_type == MEM_SHMHUGE)
+ log_err("fio: check that you have free huge pages and that hugepage-size is correct.\n");
+
return 1;
}
td->orig_buffer = shmat(td->shm_id, NULL, 0);
if (td->orig_buffer == (void *) -1) {
- td_verror(td, errno);
- perror("shmat");
+ td_verror(td, errno, "shmat");
td->orig_buffer = NULL;
return 1;
}
- } else if (td->mem_type == MEM_MMAP) {
- td->orig_buffer = mmap(NULL, td->orig_buffer_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | OS_MAP_ANON, 0, 0);
+ } else if (td->o.mem_type == MEM_MMAP ||
+ td->o.mem_type == MEM_MMAPHUGE) {
+ int flags = MAP_PRIVATE;
+
+ td->mmapfd = 0;
+
+ if (td->mmapfile) {
+ td->mmapfd = open(td->mmapfile, O_RDWR|O_CREAT, 0644);
+
+ if (td->mmapfd < 0) {
+ td_verror(td, errno, "open mmap file");
+ td->orig_buffer = NULL;
+ return 1;
+ }
+ if (ftruncate(td->mmapfd, td->orig_buffer_size) < 0) {
+ td_verror(td, errno, "truncate mmap file");
+ td->orig_buffer = NULL;
+ return 1;
+ }
+ } else
+ flags |= OS_MAP_ANON;
+
+ td->orig_buffer = mmap(NULL, td->orig_buffer_size, PROT_READ | PROT_WRITE, flags, td->mmapfd, 0);
if (td->orig_buffer == MAP_FAILED) {
- td_verror(td, errno);
- perror("mmap");
+ td_verror(td, errno, "mmap");
td->orig_buffer = NULL;
+ if (td->mmapfd) {
+ close(td->mmapfd);
+ unlink(td->mmapfile);
+ }
+
return 1;
}
}
void free_io_mem(struct thread_data *td)
{
- if (td->mem_type == MEM_MALLOC)
+ if (td->o.mem_type == MEM_MALLOC)
free(td->orig_buffer);
- else if (td->mem_type == MEM_SHM) {
+ else if (td->o.mem_type == MEM_SHM || td->o.mem_type == MEM_SHMHUGE) {
struct shmid_ds sbuf;
shmdt(td->orig_buffer);
shmctl(td->shm_id, IPC_RMID, &sbuf);
- } else if (td->mem_type == MEM_MMAP)
+ } else if (td->o.mem_type == MEM_MMAP ||
+ td->o.mem_type == MEM_MMAPHUGE) {
munmap(td->orig_buffer, td->orig_buffer_size);
- else
- log_err("Bad memory type %d\n", td->mem_type);
+ if (td->mmapfile) {
+ close(td->mmapfd);
+ unlink(td->mmapfile);
+ free(td->mmapfile);
+ }
+ } else
+ log_err("Bad memory type %u\n", td->o.mem_type);
td->orig_buffer = NULL;
}