*/
#include <stdio.h>
#include <stdlib.h>
-#include <unistd.h>
#include <errno.h>
#include <sys/mman.h>
#include "../fio.h"
+#include "../optgroup.h"
#include "../verify.h"
/*
off_t mmap_off;
};
+#ifdef CONFIG_HAVE_THP
+struct mmap_options {
+ void *pad;
+ unsigned int thp;
+};
+
+static struct fio_option options[] = {
+ {
+ .name = "thp",
+ .lname = "Transparent Huge Pages",
+ .type = FIO_OPT_INT,
+ .off1 = offsetof(struct mmap_options, thp),
+ .help = "Memory Advise Huge Page",
+ .category = FIO_OPT_C_ENGINE,
+ .group = FIO_OPT_G_MMAP,
+ },
+ {
+ .name = NULL,
+ },
+};
+#endif
+
+static bool fio_madvise_file(struct thread_data *td, struct fio_file *f,
+ size_t length)
+
+{
+ struct fio_mmap_data *fmd = FILE_ENG_DATA(f);
+#ifdef CONFIG_HAVE_THP
+ struct mmap_options *o = td->eo;
+
+ /* Ignore errors on this optional advisory */
+ if (o->thp)
+ madvise(fmd->mmap_ptr, length, MADV_HUGEPAGE);
+#endif
+
+ if (!td->o.fadvise_hint)
+ return true;
+
+ if (!td_random(td)) {
+ if (posix_madvise(fmd->mmap_ptr, length, POSIX_MADV_SEQUENTIAL) < 0) {
+ td_verror(td, errno, "madvise");
+ return false;
+ }
+ } else {
+ if (posix_madvise(fmd->mmap_ptr, length, POSIX_MADV_RANDOM) < 0) {
+ td_verror(td, errno, "madvise");
+ return false;
+ }
+ }
+
+ return true;
+}
+
+#ifdef CONFIG_HAVE_THP
+static int fio_mmap_get_shared(struct thread_data *td)
+{
+ struct mmap_options *o = td->eo;
+
+ if (o->thp)
+ return MAP_PRIVATE;
+ return MAP_SHARED;
+}
+#else
+static int fio_mmap_get_shared(struct thread_data *td)
+{
+ return MAP_SHARED;
+}
+#endif
+
static int fio_mmap_file(struct thread_data *td, struct fio_file *f,
size_t length, off_t off)
{
struct fio_mmap_data *fmd = FILE_ENG_DATA(f);
- int flags = 0;
+ int flags = 0, shared = fio_mmap_get_shared(td);
if (td_rw(td) && !td->o.verify_only)
flags = PROT_READ | PROT_WRITE;
} else
flags = PROT_READ;
- fmd->mmap_ptr = mmap(NULL, length, flags, MAP_SHARED, f->fd, off);
+ fmd->mmap_ptr = mmap(NULL, length, flags, shared, f->fd, off);
if (fmd->mmap_ptr == MAP_FAILED) {
fmd->mmap_ptr = NULL;
td_verror(td, errno, "mmap");
goto err;
}
- if (!td_random(td)) {
- if (posix_madvise(fmd->mmap_ptr, length, POSIX_MADV_SEQUENTIAL) < 0) {
- td_verror(td, errno, "madvise");
- goto err;
- }
- } else {
- if (posix_madvise(fmd->mmap_ptr, length, POSIX_MADV_RANDOM) < 0) {
- td_verror(td, errno, "madvise");
- goto err;
- }
- }
+ if (!fio_madvise_file(td, f, length))
+ goto err;
+
if (posix_madvise(fmd->mmap_ptr, length, POSIX_MADV_DONTNEED) < 0) {
td_verror(td, errno, "madvise");
goto err;
* It fits within existing mapping, use it
*/
if (io_u->offset >= fmd->mmap_off &&
- io_u->offset + io_u->buflen < fmd->mmap_off + fmd->mmap_sz)
+ io_u->offset + io_u->buflen <= fmd->mmap_off + fmd->mmap_sz)
goto done;
/*
return 0;
}
-static int fio_mmapio_queue(struct thread_data *td, struct io_u *io_u)
+static enum fio_q_status fio_mmapio_queue(struct thread_data *td,
+ struct io_u *io_u)
{
struct fio_file *f = io_u->file;
struct fio_mmap_data *fmd = FILE_ENG_DATA(f);
.close_file = fio_mmapio_close_file,
.get_file_size = generic_get_file_size,
.flags = FIO_SYNCIO | FIO_NOEXTEND,
+#ifdef CONFIG_HAVE_THP
+ .options = options,
+ .option_struct_size = sizeof(struct mmap_options),
+#endif
};
static void fio_init fio_mmapio_register(void)