diff options
| author | Rusty Russell | 2009-03-31 13:05:33 -0600 |
|---|---|---|
| committer | Rusty Russell | 2009-03-31 13:05:34 +1030 |
| commit | 9cb610d8e35fe3ec95a2fe2030b02f85aeea83c1 (patch) | |
| tree | 282863f8b6560e5373f40e9d6b7f2fa2dcc8e86d | |
| parent | c6e665c8f0c18ab3686117905765b5139efd6ebd (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>
| -rw-r--r-- | kernel/module.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/module.c b/kernel/module.c index 599fc85bd2cc..784bf6d8f8c4 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, |