X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=memory.c;h=e06cab2900a531e1515308fb166e626b6076274f;hp=f97749bc72c657f7b0d9f3739853dd7039797280;hb=211c9b8948b43ed47aedf1227e0444a58db015e4;hpb=c41a9d06a1957ba7c5a019e3d6088a5e8e8e0a47

diff --git a/memory.c b/memory.c
index f97749bc..e06cab29 100644
--- a/memory.c
+++ b/memory.c
@@ -5,10 +5,12 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>
-#include <sys/shm.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)
 {
@@ -115,10 +117,19 @@ static void free_mem_shm(struct thread_data *td)
 
 static int alloc_mem_mmap(struct thread_data *td, size_t total_mem)
 {
-	int flags = MAP_PRIVATE;
+	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);
 
@@ -127,18 +138,23 @@ static int alloc_mem_mmap(struct thread_data *td, size_t total_mem)
 			td->orig_buffer = NULL;
 			return 1;
 		}
-		if (ftruncate(td->mmapfd, total_mem) < 0) {
+		if (td->o.mem_type != MEM_MMAPHUGE &&
+		    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)
+			flags |= MAP_SHARED;
+		else
+			flags |= MAP_PRIVATE;
 	} else
-		flags |= OS_MAP_ANON;
+		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 %u/%d %p\n", total_mem, td->mmapfd,
-						td->orig_buffer);
+	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;
@@ -155,7 +171,8 @@ static int alloc_mem_mmap(struct thread_data *td, size_t total_mem)
 
 static void free_mem_mmap(struct thread_data *td, size_t total_mem)
 {
-	dprint(FD_MEM, "munmap %u %p\n", total_mem, td->orig_buffer);
+	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) {
 		close(td->mmapfd);
@@ -167,7 +184,8 @@ static void free_mem_mmap(struct thread_data *td, size_t total_mem)
 static int alloc_mem_malloc(struct thread_data *td, size_t total_mem)
 {
 	td->orig_buffer = malloc(total_mem);
-	dprint(FD_MEM, "malloc %u %p\n", total_mem, td->orig_buffer);
+	dprint(FD_MEM, "malloc %llu %p\n", (unsigned long long) total_mem,
+							td->orig_buffer);
 
 	return td->orig_buffer == NULL;
 }
@@ -198,7 +216,7 @@ int allocate_io_mem(struct thread_data *td)
 			total_mem += td->o.mem_align - page_size;
 	}
 
-	dprint(FD_MEM, "Alloc %lu for buffers\n", (size_t) total_mem);
+	dprint(FD_MEM, "Alloc %llu for buffers\n", (unsigned long long) total_mem);
 
 	if (td->o.mem_type == MEM_MALLOC)
 		ret = alloc_mem_malloc(td, total_mem);