X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=memory.c;h=b5a71d5397fd852d42e2fb73f4d45b2a90d38e3b;hp=d8924a85e0cf6e5a62af17feb638d953f10fbe64;hb=e48676baa53074b429460c71fb2c9e0ac7ac7d8c;hpb=2f9ade3cb72218eb260f4f5e6914218bdcaa2bcc

diff --git a/memory.c b/memory.c
index d8924a85..b5a71d53 100644
--- a/memory.c
+++ b/memory.c
@@ -6,9 +6,7 @@
 #include <sys/mman.h>
 
 #include "fio.h"
-#include "os.h"
 
-extern unsigned long long mlock_size;
 static void *pinned_mem;
 
 void fio_unpin_memory(void)
@@ -35,7 +33,7 @@ int fio_pin_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);
 		}
 	}
 
@@ -60,29 +58,62 @@ int fio_pin_memory(void)
  */
 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;
 		}
 	}
@@ -92,17 +123,23 @@ int allocate_io_mem(struct thread_data *td)
 
 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;
 }