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authorBjörn-Egil Dahlberg <[email protected]>2012-11-14 17:08:17 +0100
committerBjörn-Egil Dahlberg <[email protected]>2012-12-14 15:12:22 +0100
commit9d487e5c1385c074f50388a777e808a40cebaf8b (patch)
tree84e1f2820432bee01d5389c2593a4f97028f084b /erts/emulator/sys
parentc519fd567d661d7d75a678455b2e9651ba3b421d (diff)
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erts: Use aligned bits as constant in mseg_alloc
HAVE_SUPER_ALIGNED_MB_CARRIERS is always true with mmap and thus aligned bits is a constant and so is "page" size for mmap. Conflicts: erts/emulator/sys/common/erl_mseg.h
Diffstat (limited to 'erts/emulator/sys')
-rw-r--r--erts/emulator/sys/common/erl_mseg.h12
1 files changed, 10 insertions, 2 deletions
diff --git a/erts/emulator/sys/common/erl_mseg.h b/erts/emulator/sys/common/erl_mseg.h
index f260c6506f..8f8cb0e121 100644
--- a/erts/emulator/sys/common/erl_mseg.h
+++ b/erts/emulator/sys/common/erl_mseg.h
@@ -39,9 +39,17 @@
#endif
#if HAVE_SUPER_ALIGNED_MB_CARRIERS
-# define MSEG_ALIGN_BITS (17) /*SVERK Configure me! */
+# define MSEG_ALIGN_BITS (17)
#else
-# define MSEG_ALIGN_BITS (12) /*SVERK Configure me! */
+/* If we don't use super aligned multiblock carriers
+ * we will mmap with page size alignment (and thus use corresponding
+ * align bits).
+ *
+ * Current implementation needs this to be a constant and
+ * only uses this for user dev testing so setting page size
+ * to 4096 (12 bits) is fine.
+ */
+# define MSEG_ALIGN_BITS (12)
#endif
#if HAVE_ERTS_MSEG