diff options
| author | Arjan van de Ven <arjan@linux.intel.com> | 2006-06-28 07:26:45 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-28 17:59:04 -0400 |
| commit | f71d20e961474dde77e6558396efb93d6ac80a4b (patch) | |
| tree | 669610f79521fd173c28fc47bef39ecd4cdf52ab /include/asm-generic | |
| parent | f5e54d6e53a20cef45af7499e86164f0e0d16bb2 (diff) | |
[PATCH] Add EXPORT_UNUSED_SYMBOL and EXPORT_UNUSED_SYMBOL_GPL
Temporarily add EXPORT_UNUSED_SYMBOL and EXPORT_UNUSED_SYMBOL_GPL. These
will be used as a transition measure for symbols that aren't used in the
kernel and are on the way out. When a module uses such a symbol, a warning
is printk'd at modprobe time.
The main reason for removing unused exports is size: eacho export takes
roughly between 100 and 150 bytes of kernel space in the binary. This
patch gives users the option to immediately get this size gain via a config
option.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/vmlinux.lds.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 9d11550b4818..db5a3732f106 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h | |||
| @@ -58,6 +58,20 @@ | |||
| 58 | VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ | 58 | VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ |
| 59 | } \ | 59 | } \ |
| 60 | \ | 60 | \ |
| 61 | /* Kernel symbol table: Normal unused symbols */ \ | ||
| 62 | __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \ | ||
| 63 | VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \ | ||
| 64 | *(__ksymtab_unused) \ | ||
| 65 | VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \ | ||
| 66 | } \ | ||
| 67 | \ | ||
| 68 | /* Kernel symbol table: GPL-only unused symbols */ \ | ||
| 69 | __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \ | ||
| 70 | VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \ | ||
| 71 | *(__ksymtab_unused_gpl) \ | ||
| 72 | VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \ | ||
| 73 | } \ | ||
| 74 | \ | ||
| 61 | /* Kernel symbol table: GPL-future-only symbols */ \ | 75 | /* Kernel symbol table: GPL-future-only symbols */ \ |
| 62 | __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \ | 76 | __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \ |
| 63 | VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \ | 77 | VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \ |
| @@ -79,6 +93,20 @@ | |||
| 79 | VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \ | 93 | VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \ |
| 80 | } \ | 94 | } \ |
| 81 | \ | 95 | \ |
| 96 | /* Kernel symbol table: Normal unused symbols */ \ | ||
| 97 | __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \ | ||
| 98 | VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \ | ||
| 99 | *(__kcrctab_unused) \ | ||
| 100 | VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \ | ||
| 101 | } \ | ||
| 102 | \ | ||
| 103 | /* Kernel symbol table: GPL-only unused symbols */ \ | ||
| 104 | __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \ | ||
| 105 | VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \ | ||
| 106 | *(__kcrctab_unused_gpl) \ | ||
| 107 | VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \ | ||
| 108 | } \ | ||
| 109 | \ | ||
| 82 | /* Kernel symbol table: GPL-future-only symbols */ \ | 110 | /* Kernel symbol table: GPL-future-only symbols */ \ |
| 83 | __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \ | 111 | __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \ |
| 84 | VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \ | 112 | VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \ |