Messages in this thread Patch in this message |  | | | From | Rusty Russell <> | | Date | Sat, 07 Feb 2009 23:15:22 +1030 | | Subject | [PATCH 9/9] module: remove the SHF_ALLOC flag on the __versions section. |
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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> --- kernel/module.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/module.c b/kernel/module.c --- a/kernel/module.c +++ b/kernel/module.c @@ -1928,6 +1928,9 @@ static noinline struct module *load_modu if (strstarts(secstrings+sechdrs[i].sh_name, ".exit")) 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,
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