[fio.git] / memory.c

/*
 * Memory helpers
 */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>

#include "fio.h"
#ifndef FIO_NO_HAVE_SHM_H
#include <sys/shm.h>
#endif

void fio_unpin_memory(struct thread_data *td)
{
	if (td->pinned_mem) {
		dprint(FD_MEM, "unpinning %llu bytes\n", td->o.lockmem);
		if (munlock(td->pinned_mem, td->o.lockmem) < 0)
			perror("munlock");
		munmap(td->pinned_mem, td->o.lockmem);
		td->pinned_mem = NULL;
	}
}

int fio_pin_memory(struct thread_data *td)
{
	unsigned long long phys_mem;

	if (!td->o.lockmem)
		return 0;

	dprint(FD_MEM, "pinning %llu bytes\n", td->o.lockmem);

	/*
	 * Don't allow mlock of more than real_mem-128MiB
	 */
	phys_mem = os_phys_mem();
	if (phys_mem) {
		if ((td->o.lockmem + 128 * 1024 * 1024) > phys_mem) {
			td->o.lockmem = phys_mem - 128 * 1024 * 1024;
			log_info("fio: limiting mlocked memory to %lluMiB\n",
							td->o.lockmem >> 20);
		}
	}

	td->pinned_mem = mmap(NULL, td->o.lockmem, PROT_READ | PROT_WRITE,
				MAP_PRIVATE | OS_MAP_ANON, -1, 0);
	if (td->pinned_mem == MAP_FAILED) {
		perror("malloc locked mem");
		td->pinned_mem = NULL;
		return 1;
	}
	if (mlock(td->pinned_mem, td->o.lockmem) < 0) {
		perror("mlock");
		munmap(td->pinned_mem, td->o.lockmem);
		td->pinned_mem = NULL;
		return 1;
	}

	return 0;
}

static int alloc_mem_shm(struct thread_data *td, unsigned int total_mem)
{
#ifndef CONFIG_NO_SHM
	int flags = IPC_CREAT | S_IRUSR | S_IWUSR;

	if (td->o.mem_type == MEM_SHMHUGE) {
		unsigned long mask = td->o.hugepage_size - 1;

		flags |= SHM_HUGETLB;
		total_mem = (total_mem + mask) & ~mask;
	}

	td->shm_id = shmget(IPC_PRIVATE, total_mem, flags);
	dprint(FD_MEM, "shmget %u, %d\n", total_mem, td->shm_id);
	if (td->shm_id < 0) {
		td_verror(td, errno, "shmget");
		if (geteuid() != 0 && (errno == ENOMEM || errno == EPERM))
			log_err("fio: you may need to run this job as root\n");
		if (td->o.mem_type == MEM_SHMHUGE) {
			if (errno == EINVAL) {
				log_err("fio: check that you have free huge"
					" pages and that hugepage-size is"
					" correct.\n");
			} else if (errno == ENOSYS) {
				log_err("fio: your system does not appear to"
					" support huge pages.\n");
			} else if (errno == ENOMEM) {
				log_err("fio: no huge pages available, do you"
					" need to allocate some? See HOWTO.\n");
			}
		}

		return 1;
	}

	td->orig_buffer = shmat(td->shm_id, NULL, 0);
	dprint(FD_MEM, "shmat %d, %p\n", td->shm_id, td->orig_buffer);
	if (td->orig_buffer == (void *) -1) {
		td_verror(td, errno, "shmat");
		td->orig_buffer = NULL;
		return 1;
	}

	return 0;
#else
	log_err("fio: shm not supported\n");
	return 1;
#endif
}

static void free_mem_shm(struct thread_data *td)
{
#ifndef CONFIG_NO_SHM
	struct shmid_ds sbuf;

	dprint(FD_MEM, "shmdt/ctl %d %p\n", td->shm_id, td->orig_buffer);
	shmdt(td->orig_buffer);
	shmctl(td->shm_id, IPC_RMID, &sbuf);
#endif
}

static int alloc_mem_mmap(struct thread_data *td, size_t total_mem)
{
	int flags = 0;

	td->mmapfd = -1;

	if (td->o.mem_type == MEM_MMAPHUGE) {
		unsigned long mask = td->o.hugepage_size - 1;

		/* TODO: make sure the file is a real hugetlbfs file */
		if (!td->o.mmapfile)
			flags |= MAP_HUGETLB;
		total_mem = (total_mem + mask) & ~mask;
	}

	if (td->o.mmapfile) {
		td->mmapfd = open(td->o.mmapfile, O_RDWR|O_CREAT, 0644);

		if (td->mmapfd < 0) {
			td_verror(td, errno, "open mmap file");
			td->orig_buffer = NULL;
			return 1;
		}
		if (td->o.mem_type != MEM_MMAPHUGE &&
		    td->o.mem_type != MEM_MMAPSHARED &&
		    ftruncate(td->mmapfd, total_mem) < 0) {
			td_verror(td, errno, "truncate mmap file");
			td->orig_buffer = NULL;
			return 1;
		}
		if (td->o.mem_type == MEM_MMAPHUGE ||
		    td->o.mem_type == MEM_MMAPSHARED)
			flags |= MAP_SHARED;
		else
			flags |= MAP_PRIVATE;
	} else
		flags |= OS_MAP_ANON | MAP_PRIVATE;

	td->orig_buffer = mmap(NULL, total_mem, PROT_READ | PROT_WRITE, flags,
				td->mmapfd, 0);
	dprint(FD_MEM, "mmap %llu/%d %p\n", (unsigned long long) total_mem,
						td->mmapfd, td->orig_buffer);
	if (td->orig_buffer == MAP_FAILED) {
		td_verror(td, errno, "mmap");
		td->orig_buffer = NULL;
		if (td->mmapfd != 1 && td->mmapfd != -1) {
			close(td->mmapfd);
			if (td->o.mmapfile)
				unlink(td->o.mmapfile);
		}

		return 1;
	}

	return 0;
}

static void free_mem_mmap(struct thread_data *td, size_t total_mem)
{
	dprint(FD_MEM, "munmap %llu %p\n", (unsigned long long) total_mem,
						td->orig_buffer);
	munmap(td->orig_buffer, td->orig_buffer_size);
	if (td->o.mmapfile) {
		if (td->mmapfd != -1)
			close(td->mmapfd);
		unlink(td->o.mmapfile);
		free(td->o.mmapfile);
	}
}

static int alloc_mem_malloc(struct thread_data *td, size_t total_mem)
{
	td->orig_buffer = malloc(total_mem);
	dprint(FD_MEM, "malloc %llu %p\n", (unsigned long long) total_mem,
							td->orig_buffer);

	return td->orig_buffer == NULL;
}

static void free_mem_malloc(struct thread_data *td)
{
	dprint(FD_MEM, "free malloc mem %p\n", td->orig_buffer);
	free(td->orig_buffer);
}

static int alloc_mem_cudamalloc(struct thread_data *td, size_t total_mem)
{
#ifdef CONFIG_CUDA
	CUresult ret;
	char name[128];

	ret = cuInit(0);
	if (ret != CUDA_SUCCESS) {
		log_err("fio: failed initialize cuda driver api\n");
		return 1;
	}

	ret = cuDeviceGetCount(&td->gpu_dev_cnt);
	if (ret != CUDA_SUCCESS) {
		log_err("fio: failed get device count\n");
		return 1;
	}
	dprint(FD_MEM, "found %d GPU devices\n", td->gpu_dev_cnt);

	if (td->gpu_dev_cnt == 0) {
		log_err("fio: no GPU device found. "
			"Can not perform GPUDirect RDMA.\n");
		return 1;
	}

	td->gpu_dev_id = td->o.gpu_dev_id;
	ret = cuDeviceGet(&td->cu_dev, td->gpu_dev_id);
	if (ret != CUDA_SUCCESS) {
		log_err("fio: failed get GPU device\n");
		return 1;
	}

	ret = cuDeviceGetName(name, sizeof(name), td->gpu_dev_id);
	if (ret != CUDA_SUCCESS) {
		log_err("fio: failed get device name\n");
		return 1;
	}
	dprint(FD_MEM, "dev_id = [%d], device name = [%s]\n", \
	       td->gpu_dev_id, name);

	ret = cuCtxCreate(&td->cu_ctx, CU_CTX_MAP_HOST, td->cu_dev);
	if (ret != CUDA_SUCCESS) {
		log_err("fio: failed to create cuda context: %d\n", ret);
		return 1;
	}

	ret = cuMemAlloc(&td->dev_mem_ptr, total_mem);
	if (ret != CUDA_SUCCESS) {
		log_err("fio: cuMemAlloc %zu bytes failed\n", total_mem);
		return 1;
	}
	td->orig_buffer = (void *) td->dev_mem_ptr;

	dprint(FD_MEM, "cudaMalloc %llu %p\n",				\
	       (unsigned long long) total_mem, td->orig_buffer);
	return 0;
#else
	return -EINVAL;
#endif
}

static void free_mem_cudamalloc(struct thread_data *td)
{
#ifdef CONFIG_CUDA
	if (td->dev_mem_ptr != NULL)
		cuMemFree(td->dev_mem_ptr);

	if (cuCtxDestroy(td->cu_ctx) != CUDA_SUCCESS)
		log_err("fio: failed to destroy cuda context\n");
#endif
}

/*
 * Set up the buffer area we need for io.
 */
int allocate_io_mem(struct thread_data *td)
{
	size_t total_mem;
	int ret = 0;

	if (td_ioengine_flagged(td, FIO_NOIO))
		return 0;

	total_mem = td->orig_buffer_size;

	if (td->o.odirect || td->o.mem_align || td->o.oatomic ||
	    td_ioengine_flagged(td, FIO_MEMALIGN)) {
		total_mem += page_mask;
		if (td->o.mem_align && td->o.mem_align > page_size)
			total_mem += td->o.mem_align - page_size;
	}

	dprint(FD_MEM, "Alloc %llu for buffers\n", (unsigned long long) total_mem);

	/*
	 * If the IO engine has hooks to allocate/free memory, use those. But
	 * error out if the user explicitly asked for something else.
	 */
	if (td->io_ops->iomem_alloc) {
		if (fio_option_is_set(&td->o, mem_type)) {
			log_err("fio: option 'mem/iomem' conflicts with specified IO engine\n");
			ret = 1;
		} else
			ret = td->io_ops->iomem_alloc(td, total_mem);
	} else if (td->o.mem_type == MEM_MALLOC)
		ret = alloc_mem_malloc(td, total_mem);
	else if (td->o.mem_type == MEM_SHM || td->o.mem_type == MEM_SHMHUGE)
		ret = alloc_mem_shm(td, total_mem);
	else if (td->o.mem_type == MEM_MMAP || td->o.mem_type == MEM_MMAPHUGE ||
		 td->o.mem_type == MEM_MMAPSHARED)
		ret = alloc_mem_mmap(td, total_mem);
	else if (td->o.mem_type == MEM_CUDA_MALLOC)
		ret = alloc_mem_cudamalloc(td, total_mem);
	else {
		log_err("fio: bad mem type: %d\n", td->o.mem_type);
		ret = 1;
	}

	if (ret)
		td_verror(td, ENOMEM, "iomem allocation");

	return ret;
}

void free_io_mem(struct thread_data *td)
{
	unsigned int total_mem;

	total_mem = td->orig_buffer_size;
	if (td->o.odirect || td->o.oatomic)
		total_mem += page_mask;

	if (td->io_ops->iomem_alloc) {
		if (td->io_ops->iomem_free)
			td->io_ops->iomem_free(td);
	} else if (td->o.mem_type == MEM_MALLOC)
		free_mem_malloc(td);
	else if (td->o.mem_type == MEM_SHM || td->o.mem_type == MEM_SHMHUGE)
		free_mem_shm(td);
	else if (td->o.mem_type == MEM_MMAP || td->o.mem_type == MEM_MMAPHUGE ||
		 td->o.mem_type == MEM_MMAPSHARED)
		free_mem_mmap(td, total_mem);
	else if (td->o.mem_type == MEM_CUDA_MALLOC)
		free_mem_cudamalloc(td);
	else
		log_err("Bad memory type %u\n", td->o.mem_type);

	td->orig_buffer = NULL;
	td->orig_buffer_size = 0;
}
Commit	Line	Data
	1	/*
	2	* Memory helpers
	3	*/
	4	#include <sys/types.h>
	5	#include <sys/stat.h>
	6	#include <fcntl.h>
	7	#include <unistd.h>
	8	#include <sys/mman.h>
	9
	10	#include "fio.h"
	11	#ifndef FIO_NO_HAVE_SHM_H
	12	#include <sys/shm.h>
	13	#endif
	14
	15	void fio_unpin_memory(struct thread_data *td)
	16	{
	17	if (td->pinned_mem) {
	18	dprint(FD_MEM, "unpinning %llu bytes\n", td->o.lockmem);
	19	if (munlock(td->pinned_mem, td->o.lockmem) < 0)
	20	perror("munlock");
	21	munmap(td->pinned_mem, td->o.lockmem);
	22	td->pinned_mem = NULL;
	23	}
	24	}
	25
	26	int fio_pin_memory(struct thread_data *td)
	27	{
	28	unsigned long long phys_mem;
	29
	30	if (!td->o.lockmem)
	31	return 0;
	32
	33	dprint(FD_MEM, "pinning %llu bytes\n", td->o.lockmem);
	34
	35	/*
	36	* Don't allow mlock of more than real_mem-128MiB
	37	*/
	38	phys_mem = os_phys_mem();
	39	if (phys_mem) {
	40	if ((td->o.lockmem + 128 * 1024 * 1024) > phys_mem) {
	41	td->o.lockmem = phys_mem - 128 * 1024 * 1024;
	42	log_info("fio: limiting mlocked memory to %lluMiB\n",
	43	td->o.lockmem >> 20);
	44	}
	45	}
	46
	47	td->pinned_mem = mmap(NULL, td->o.lockmem, PROT_READ \| PROT_WRITE,
	48	MAP_PRIVATE \| OS_MAP_ANON, -1, 0);
	49	if (td->pinned_mem == MAP_FAILED) {
	50	perror("malloc locked mem");
	51	td->pinned_mem = NULL;
	52	return 1;
	53	}
	54	if (mlock(td->pinned_mem, td->o.lockmem) < 0) {
	55	perror("mlock");
	56	munmap(td->pinned_mem, td->o.lockmem);
	57	td->pinned_mem = NULL;
	58	return 1;
	59	}
	60
	61	return 0;
	62	}
	63
	64	static int alloc_mem_shm(struct thread_data *td, unsigned int total_mem)
	65	{
	66	#ifndef CONFIG_NO_SHM
	67	int flags = IPC_CREAT \| S_IRUSR \| S_IWUSR;
	68
	69	if (td->o.mem_type == MEM_SHMHUGE) {
	70	unsigned long mask = td->o.hugepage_size - 1;
	71
	72	flags \|= SHM_HUGETLB;
	73	total_mem = (total_mem + mask) & ~mask;
	74	}
	75
	76	td->shm_id = shmget(IPC_PRIVATE, total_mem, flags);
	77	dprint(FD_MEM, "shmget %u, %d\n", total_mem, td->shm_id);
	78	if (td->shm_id < 0) {
	79	td_verror(td, errno, "shmget");
	80	if (geteuid() != 0 && (errno == ENOMEM \|\| errno == EPERM))
	81	log_err("fio: you may need to run this job as root\n");
	82	if (td->o.mem_type == MEM_SHMHUGE) {
	83	if (errno == EINVAL) {
	84	log_err("fio: check that you have free huge"
	85	" pages and that hugepage-size is"
	86	" correct.\n");
	87	} else if (errno == ENOSYS) {
	88	log_err("fio: your system does not appear to"
	89	" support huge pages.\n");
	90	} else if (errno == ENOMEM) {
	91	log_err("fio: no huge pages available, do you"
	92	" need to allocate some? See HOWTO.\n");
	93	}
	94	}
	95
	96	return 1;
	97	}
	98
	99	td->orig_buffer = shmat(td->shm_id, NULL, 0);
	100	dprint(FD_MEM, "shmat %d, %p\n", td->shm_id, td->orig_buffer);
	101	if (td->orig_buffer == (void *) -1) {
	102	td_verror(td, errno, "shmat");
	103	td->orig_buffer = NULL;
	104	return 1;
	105	}
	106
	107	return 0;
	108	#else
	109	log_err("fio: shm not supported\n");
	110	return 1;
	111	#endif
	112	}
	113
	114	static void free_mem_shm(struct thread_data *td)
	115	{
	116	#ifndef CONFIG_NO_SHM
	117	struct shmid_ds sbuf;
	118
	119	dprint(FD_MEM, "shmdt/ctl %d %p\n", td->shm_id, td->orig_buffer);
	120	shmdt(td->orig_buffer);
	121	shmctl(td->shm_id, IPC_RMID, &sbuf);
	122	#endif
	123	}
	124
	125	static int alloc_mem_mmap(struct thread_data *td, size_t total_mem)
	126	{
	127	int flags = 0;
	128
	129	td->mmapfd = -1;
	130
	131	if (td->o.mem_type == MEM_MMAPHUGE) {
	132	unsigned long mask = td->o.hugepage_size - 1;
	133
	134	/* TODO: make sure the file is a real hugetlbfs file */
	135	if (!td->o.mmapfile)
	136	flags \|= MAP_HUGETLB;
	137	total_mem = (total_mem + mask) & ~mask;
	138	}
	139
	140	if (td->o.mmapfile) {
	141	td->mmapfd = open(td->o.mmapfile, O_RDWR\|O_CREAT, 0644);
	142
	143	if (td->mmapfd < 0) {
	144	td_verror(td, errno, "open mmap file");
	145	td->orig_buffer = NULL;
	146	return 1;
	147	}
	148	if (td->o.mem_type != MEM_MMAPHUGE &&
	149	td->o.mem_type != MEM_MMAPSHARED &&
	150	ftruncate(td->mmapfd, total_mem) < 0) {
	151	td_verror(td, errno, "truncate mmap file");
	152	td->orig_buffer = NULL;
	153	return 1;
	154	}
	155	if (td->o.mem_type == MEM_MMAPHUGE \|\|
	156	td->o.mem_type == MEM_MMAPSHARED)
	157	flags \|= MAP_SHARED;
	158	else
	159	flags \|= MAP_PRIVATE;
	160	} else
	161	flags \|= OS_MAP_ANON \| MAP_PRIVATE;
	162
	163	td->orig_buffer = mmap(NULL, total_mem, PROT_READ \| PROT_WRITE, flags,
	164	td->mmapfd, 0);
	165	dprint(FD_MEM, "mmap %llu/%d %p\n", (unsigned long long) total_mem,
	166	td->mmapfd, td->orig_buffer);
	167	if (td->orig_buffer == MAP_FAILED) {
	168	td_verror(td, errno, "mmap");
	169	td->orig_buffer = NULL;
	170	if (td->mmapfd != 1 && td->mmapfd != -1) {
	171	close(td->mmapfd);
	172	if (td->o.mmapfile)
	173	unlink(td->o.mmapfile);
	174	}
	175
	176	return 1;
	177	}
	178
	179	return 0;
	180	}
	181
	182	static void free_mem_mmap(struct thread_data *td, size_t total_mem)
	183	{
	184	dprint(FD_MEM, "munmap %llu %p\n", (unsigned long long) total_mem,
	185	td->orig_buffer);
	186	munmap(td->orig_buffer, td->orig_buffer_size);
	187	if (td->o.mmapfile) {
	188	if (td->mmapfd != -1)
	189	close(td->mmapfd);
	190	unlink(td->o.mmapfile);
	191	free(td->o.mmapfile);
	192	}
	193	}
	194
	195	static int alloc_mem_malloc(struct thread_data *td, size_t total_mem)
	196	{
	197	td->orig_buffer = malloc(total_mem);
	198	dprint(FD_MEM, "malloc %llu %p\n", (unsigned long long) total_mem,
	199	td->orig_buffer);
	200
	201	return td->orig_buffer == NULL;
	202	}
	203
	204	static void free_mem_malloc(struct thread_data *td)
	205	{
	206	dprint(FD_MEM, "free malloc mem %p\n", td->orig_buffer);
	207	free(td->orig_buffer);
	208	}
	209
	210	static int alloc_mem_cudamalloc(struct thread_data *td, size_t total_mem)
	211	{
	212	#ifdef CONFIG_CUDA
	213	CUresult ret;
	214	char name[128];
	215
	216	ret = cuInit(0);
	217	if (ret != CUDA_SUCCESS) {
	218	log_err("fio: failed initialize cuda driver api\n");
	219	return 1;
	220	}
	221
	222	ret = cuDeviceGetCount(&td->gpu_dev_cnt);
	223	if (ret != CUDA_SUCCESS) {
	224	log_err("fio: failed get device count\n");
	225	return 1;
	226	}
	227	dprint(FD_MEM, "found %d GPU devices\n", td->gpu_dev_cnt);
	228
	229	if (td->gpu_dev_cnt == 0) {
	230	log_err("fio: no GPU device found. "
	231	"Can not perform GPUDirect RDMA.\n");
	232	return 1;
	233	}
	234
	235	td->gpu_dev_id = td->o.gpu_dev_id;
	236	ret = cuDeviceGet(&td->cu_dev, td->gpu_dev_id);
	237	if (ret != CUDA_SUCCESS) {
	238	log_err("fio: failed get GPU device\n");
	239	return 1;
	240	}
	241
	242	ret = cuDeviceGetName(name, sizeof(name), td->gpu_dev_id);
	243	if (ret != CUDA_SUCCESS) {
	244	log_err("fio: failed get device name\n");
	245	return 1;
	246	}
	247	dprint(FD_MEM, "dev_id = [%d], device name = [%s]\n", \
	248	td->gpu_dev_id, name);
	249
	250	ret = cuCtxCreate(&td->cu_ctx, CU_CTX_MAP_HOST, td->cu_dev);
	251	if (ret != CUDA_SUCCESS) {
	252	log_err("fio: failed to create cuda context: %d\n", ret);
	253	return 1;
	254	}
	255
	256	ret = cuMemAlloc(&td->dev_mem_ptr, total_mem);
	257	if (ret != CUDA_SUCCESS) {
	258	log_err("fio: cuMemAlloc %zu bytes failed\n", total_mem);
	259	return 1;
	260	}
	261	td->orig_buffer = (void *) td->dev_mem_ptr;
	262
	263	dprint(FD_MEM, "cudaMalloc %llu %p\n", \
	264	(unsigned long long) total_mem, td->orig_buffer);
	265	return 0;
	266	#else
	267	return -EINVAL;
	268	#endif
	269	}
	270
	271	static void free_mem_cudamalloc(struct thread_data *td)
	272	{
	273	#ifdef CONFIG_CUDA
	274	if (td->dev_mem_ptr != NULL)
	275	cuMemFree(td->dev_mem_ptr);
	276
	277	if (cuCtxDestroy(td->cu_ctx) != CUDA_SUCCESS)
	278	log_err("fio: failed to destroy cuda context\n");
	279	#endif
	280	}
	281
	282	/*
	283	* Set up the buffer area we need for io.
	284	*/
	285	int allocate_io_mem(struct thread_data *td)
	286	{
	287	size_t total_mem;
	288	int ret = 0;
	289
	290	if (td_ioengine_flagged(td, FIO_NOIO))
	291	return 0;
	292
	293	total_mem = td->orig_buffer_size;
	294
	295	if (td->o.odirect \|\| td->o.mem_align \|\| td->o.oatomic \|\|
	296	td_ioengine_flagged(td, FIO_MEMALIGN)) {
	297	total_mem += page_mask;
	298	if (td->o.mem_align && td->o.mem_align > page_size)
	299	total_mem += td->o.mem_align - page_size;
	300	}
	301
	302	dprint(FD_MEM, "Alloc %llu for buffers\n", (unsigned long long) total_mem);
	303
	304	/*
	305	* If the IO engine has hooks to allocate/free memory, use those. But
	306	* error out if the user explicitly asked for something else.
	307	*/
	308	if (td->io_ops->iomem_alloc) {
	309	if (fio_option_is_set(&td->o, mem_type)) {
	310	log_err("fio: option 'mem/iomem' conflicts with specified IO engine\n");
	311	ret = 1;
	312	} else
	313	ret = td->io_ops->iomem_alloc(td, total_mem);
	314	} else if (td->o.mem_type == MEM_MALLOC)
	315	ret = alloc_mem_malloc(td, total_mem);
	316	else if (td->o.mem_type == MEM_SHM \|\| td->o.mem_type == MEM_SHMHUGE)
	317	ret = alloc_mem_shm(td, total_mem);
	318	else if (td->o.mem_type == MEM_MMAP \|\| td->o.mem_type == MEM_MMAPHUGE \|\|
	319	td->o.mem_type == MEM_MMAPSHARED)
	320	ret = alloc_mem_mmap(td, total_mem);
	321	else if (td->o.mem_type == MEM_CUDA_MALLOC)
	322	ret = alloc_mem_cudamalloc(td, total_mem);
	323	else {
	324	log_err("fio: bad mem type: %d\n", td->o.mem_type);
	325	ret = 1;
	326	}
	327
	328	if (ret)
	329	td_verror(td, ENOMEM, "iomem allocation");
	330
	331	return ret;
	332	}
	333
	334	void free_io_mem(struct thread_data *td)
	335	{
	336	unsigned int total_mem;
	337
	338	total_mem = td->orig_buffer_size;
	339	if (td->o.odirect \|\| td->o.oatomic)
	340	total_mem += page_mask;
	341
	342	if (td->io_ops->iomem_alloc) {
	343	if (td->io_ops->iomem_free)
	344	td->io_ops->iomem_free(td);
	345	} else if (td->o.mem_type == MEM_MALLOC)
	346	free_mem_malloc(td);
	347	else if (td->o.mem_type == MEM_SHM \|\| td->o.mem_type == MEM_SHMHUGE)
	348	free_mem_shm(td);
	349	else if (td->o.mem_type == MEM_MMAP \|\| td->o.mem_type == MEM_MMAPHUGE \|\|
	350	td->o.mem_type == MEM_MMAPSHARED)
	351	free_mem_mmap(td, total_mem);
	352	else if (td->o.mem_type == MEM_CUDA_MALLOC)
	353	free_mem_cudamalloc(td);
	354	else
	355	log_err("Bad memory type %u\n", td->o.mem_type);
	356
	357	td->orig_buffer = NULL;
	358	td->orig_buffer_size = 0;
	359	}