adding no_thp option (for Linux/Android).

Author: devnexen

Cargo.toml

@@ -30,3 +30,4 @@ override = ["libmimalloc-sys/override"]
 debug = ["libmimalloc-sys/debug"]
 debug_in_debug = ["libmimalloc-sys/debug_in_debug"]
 local_dynamic_tls = ["libmimalloc-sys/local_dynamic_tls"]
+no_thp = ["libmimalloc-sys/no_thp"]

libmimalloc-sys/Cargo.toml

@@ -33,6 +33,7 @@ override = []
 extended = ["cty"]
 arena = []
 local_dynamic_tls = []
+no_thp = []
 
 # Show `extended` on docs.rs since it's the full API surface.
 [package.metadata.docs.rs]

libmimalloc-sys/build.rs

@@ -32,6 +32,12 @@ fn main() {
         }
     }
 
+    if (target_os == "linux" || target_os == "android")
+        && env::var_os("CARGO_FEATURE_NO_THP").is_some()
+    {
+        build.define("MI_NO_THP", "1");
+    }
+
     if env::var_os("CARGO_FEATURE_DEBUG").is_some()
         || (env::var_os("CARGO_FEATURE_DEBUG_IN_DEBUG").is_some() && cfg!(debug_assertions))
     {