diff options
| -rw-r--r-- | sysdep/cf/README | 3 | ||||
| -rw-r--r-- | sysdep/cf/linux.h | 1 | ||||
| -rw-r--r-- | sysdep/unix/alloc.c | 10 |
3 files changed, 14 insertions, 0 deletions
diff --git a/sysdep/cf/README b/sysdep/cf/README index 68078bbe..af65aaec 100644 --- a/sysdep/cf/README +++ b/sysdep/cf/README @@ -14,3 +14,6 @@ CONFIG_DONTROUTE_UNICAST Use MSG_DONTROUTE flag for unicast packets (def for Fre CONFIG_USE_HDRINCL Use IP_HDRINCL instead of control messages for source address on raw IP sockets. CONFIG_RESTRICTED_PRIVILEGES Implements restricted privileges using drop_uid() + +CONFIG_MADV_DONTNEED_TO_FREE To free pages, use MADV_DONTNEED instead of MADV_FREE (linux) +CONFIG_DISABLE_THP Disable transparent huge pages (linux) diff --git a/sysdep/cf/linux.h b/sysdep/cf/linux.h index 9c37dd8a..5edc4969 100644 --- a/sysdep/cf/linux.h +++ b/sysdep/cf/linux.h @@ -24,6 +24,7 @@ #define CONFIG_INCLUDE_SYSPRIV_H "sysdep/linux/syspriv.h" #define CONFIG_MADV_DONTNEED_TO_FREE +#define CONFIG_DISABLE_THP #ifndef AF_MPLS #define AF_MPLS 28 diff --git a/sysdep/unix/alloc.c b/sysdep/unix/alloc.c index e7c4e6b0..5d9c6bcd 100644 --- a/sysdep/unix/alloc.c +++ b/sysdep/unix/alloc.c @@ -19,6 +19,10 @@ #include <sys/mman.h> #endif +#ifdef CONFIG_DISABLE_THP +#include <sys/prctl.h> +#endif + long page_size = 0; #ifdef HAVE_MMAP @@ -218,6 +222,12 @@ global_free_pages_cleanup_event(void *data UNUSED) void resource_sys_init(void) { +#ifdef CONFIG_DISABLE_THP + /* Disable transparent huge pages, they do not work properly with madvice(MADV_DONTNEED) */ + if (prctl(PR_SET_THP_DISABLE, (unsigned long) 1, (unsigned long) 0, (unsigned long) 0, (unsigned long) 0) < 0) + die("prctl(PR_SET_THP_DISABLE) failed: %m"); +#endif + #ifdef HAVE_MMAP ASSERT_DIE(global_free_pages.cnt == 0); |