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authorRusty Russell <rusty@rustcorp.com.au>2009-03-31 13:05:33 -0600
committerRusty Russell <rusty@rustcorp.com.au>2009-03-31 13:05:34 +1030
commit9cb610d8e35fe3ec95a2fe2030b02f85aeea83c1 (patch)
tree282863f8b6560e5373f40e9d6b7f2fa2dcc8e86d /kernel/module.c
parentc6e665c8f0c18ab3686117905765b5139efd6ebd (diff)
module: remove the SHF_ALLOC flag on the __versions section.
Impact: reduce kernel memory usage This patch just takes off the SHF_ALLOC flag on __versions so we don't keep them around after module load. This saves about 7% of module memory if CONFIG_MODVERSIONS=y. Cc: Shawn Bohrer <shawn.bohrer@gmail.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'kernel/module.c')
-rw-r--r--kernel/module.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/module.c b/kernel/module.c
index 599fc85bd2c..784bf6d8f8c 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1961,6 +1961,9 @@ static noinline struct module *load_module(void __user *umod,
if (strncmp(secstrings+sechdrs[i].sh_name, ".exit", 5) == 0)
sechdrs[i].sh_flags &= ~(unsigned long)SHF_ALLOC;
#endif
+ /* Don't keep __versions around; it's just for loading. */
+ if (strcmp(secstrings + sechdrs[i].sh_name, "__versions") == 0)
+ sechdrs[i].sh_flags &= ~(unsigned long)SHF_ALLOC;
}
modindex = find_sec(hdr, sechdrs, secstrings,