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Add QEMU_MADV_NOHUGEPAGE

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Add QEMU_MADV_NOHUGEPAGE as an OS-independent version of
MADV_NOHUGEPAGE.

We include sys/mman.h before making the test to ensure
that we pick up the system defines.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2015-11-05 18:10:37 +00:00 committed by Juan Quintela
parent a800cd5c38
commit ebf811500b
1 changed files with 9 additions and 0 deletions
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9
include/qemu/osdep.h
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@ -139,6 +139,8 @@ void qemu_anon_ram_free(void *ptr, size_t size);
#if defined(CONFIG_MADVISE)
#include <sys/mman.h>
#define QEMU_MADV_WILLNEED MADV_WILLNEED
#define QEMU_MADV_DONTNEED MADV_DONTNEED
#ifdef MADV_DONTFORK
@ -171,6 +173,11 @@ void qemu_anon_ram_free(void *ptr, size_t size);
#else
#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
#endif
#ifdef MADV_NOHUGEPAGE
#define QEMU_MADV_NOHUGEPAGE MADV_NOHUGEPAGE
#else
#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
#endif
#elif defined(CONFIG_POSIX_MADVISE)
@ -182,6 +189,7 @@ void qemu_anon_ram_free(void *ptr, size_t size);
#define QEMU_MADV_DODUMP QEMU_MADV_INVALID
#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID
#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
#else /* no-op */
@ -193,6 +201,7 @@ void qemu_anon_ram_free(void *ptr, size_t size);
#define QEMU_MADV_DODUMP QEMU_MADV_INVALID
#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID
#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
#endif