Auto merge of #2638 - devnexen:shm_create_largepage_fbsd, r=Amanieu

freebsd 13 non thp userspace fn.

Author: bors

libc-test/build.rs

@@ -2154,6 +2154,9 @@ fn test_freebsd(target: &str) {
             "F_KINFO" => true, // FIXME: depends how frequent freebsd 14 is updated on CI, this addition went this week only.
             "SHM_RENAME_NOREPLACE"
             | "SHM_RENAME_EXCHANGE"
+            | "SHM_LARGEPAGE_ALLOC_DEFAULT"
+            | "SHM_LARGEPAGE_ALLOC_NOWAIT"
+            | "SHM_LARGEPAGE_ALLOC_HARD"
             | "MFD_CLOEXEC"
             | "MFD_ALLOW_SEALING"
             | "MFD_HUGETLB"
@@ -2243,7 +2246,9 @@ fn test_freebsd(target: &str) {
             "SOCKCRED2SIZE" if Some(13) > freebsd_ver => true,
 
             // Those are not available in FreeBSD 12.
-            "memfd_create" | "shm_rename" if Some(13) > freebsd_ver => true,
+            "memfd_create" | "shm_create_largepage" | "shm_rename" if Some(13) > freebsd_ver => {
+                true
+            }
 
             _ => false,
         }

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -3561,6 +3561,9 @@ pub const MFD_CLOEXEC: ::c_uint = 0x00000001;
 pub const MFD_ALLOW_SEALING: ::c_uint = 0x00000002;
 pub const MFD_HUGETLB: ::c_uint = 0x00000004;
 
+pub const SHM_LARGEPAGE_ALLOC_DEFAULT: ::c_int = 0;
+pub const SHM_LARGEPAGE_ALLOC_NOWAIT: ::c_int = 1;
+pub const SHM_LARGEPAGE_ALLOC_HARD: ::c_int = 2;
 pub const SHM_RENAME_NOREPLACE: ::c_int = 1 << 0;
 pub const SHM_RENAME_EXCHANGE: ::c_int = 1 << 1;
 
@@ -4105,6 +4108,13 @@ extern "C" {
     pub fn adjtime(arg1: *const ::timeval, arg2: *mut ::timeval) -> ::c_int;
     pub fn clock_getcpuclockid2(arg1: ::id_t, arg2: ::c_int, arg3: *mut clockid_t) -> ::c_int;
 
+    pub fn shm_create_largepage(
+        path: *const ::c_char,
+        flags: ::c_int,
+        psind: ::c_int,
+        alloc_policy: ::c_int,
+        mode: ::mode_t,
+    ) -> ::c_int;
     pub fn shm_rename(
         path_from: *const ::c_char,
         path_to: *const ::c_char,