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Commit 708e9a79 authored by Matt Mackall's avatar Matt Mackall Committed by Linus Torvalds
Browse files

[PATCH] tiny: Configure ELF core dump support 



configurable support for ELF core dumps

   text    data     bss     dec     hex filename
3330172  529036  190556 4049764  3dcb64 vmlinux-baseline
3325552  528912  190556 4045020  3db8dc vmlinux-no-elf

add/remove: 0/8 grow/shrink: 0/0 up/down: 0/-4424 (-4424)
function                                     old     new   delta
fill_note                                     32       -     -32
maydump                                       58       -     -58
dump_seek                                     67       -     -67
writenote                                    180       -    -180
elf_dump_thread_status                       274       -    -274
fill_psinfo                                  308       -    -308
fill_prstatus                                466       -    -466
elf_core_dump                               3039       -   -3039

Signed-off-by: default avatarMatt Mackall <mpm@selenic.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent e585e470

fs/binfmt_elf.c

+2 −2
Original line number Diff line number Diff line
@@ -58,7 +58,7 @@ extern int dump_fpu (struct pt_regs *, elf_fpregset_t *); 
 * If we don't support core dumping, then supply a NULL so we

 * don't even try.

 */

#ifdef USE_ELF_CORE_DUMP

#if defined(USE_ELF_CORE_DUMP) && defined(CONFIG_ELF_CORE)

static int elf_core_dump(long signr, struct pt_regs * regs, struct file * file);

#else

#define elf_core_dump	NULL
@@ -1113,7 +1113,7 @@ static int load_elf_library(struct file *file) 
 * Note that some platforms still use traditional core dumps and not

 * the ELF core dump.  Each platform can select it as appropriate.

 */

#ifdef USE_ELF_CORE_DUMP

#if defined(USE_ELF_CORE_DUMP) && defined(CONFIG_ELF_CORE)



/*

 * ELF core dumper

init/Kconfig

+6 −0
Original line number Diff line number Diff line
@@ -327,6 +327,12 @@ config DOUBLEFAULT 
          would otherwise cause a system to silently reboot. Disabling this

          option saves about 4k.



config ELF_CORE

	default y

	bool "Enable ELF core dumps" if EMBEDDED

	help

	  Enable support for generating core dumps. Disabling saves about 4k.



config BASE_FULL

	default y

	bool "Enable full-sized data structures for core" if EMBEDDED