diff options
| author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-03-14 23:20:47 -0700 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-03-17 12:58:15 -0700 |
| commit | 704439ddf9f8ff1fc8c6d8abaac4bc4c95697e39 (patch) | |
| tree | 51faea24d641a53086d5c37cad9f4cbb0b5c6f0b | |
| parent | 0b1c723d0bd199300a1a2de57a46000d17577498 (diff) | |
x86/brk: put the brk reservations in their own section
Impact: disambiguate real .bss variables from .brk storage
Add a .brk section after the .bss section. This has no effect
on the final vmlinux, but it more clearly distinguishes the space
taken by actual .bss symbols, and the variable space reserved
by .brk users.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| -rw-r--r-- | arch/x86/kernel/vmlinux_32.lds.S | 8 | ||||
| -rw-r--r-- | arch/x86/kernel/vmlinux_64.lds.S | 4 |
2 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86/kernel/vmlinux_32.lds.S b/arch/x86/kernel/vmlinux_32.lds.S index 98424f33e07..de14973e47f 100644 --- a/arch/x86/kernel/vmlinux_32.lds.S +++ b/arch/x86/kernel/vmlinux_32.lds.S @@ -189,16 +189,18 @@ SECTIONS *(.bss) . = ALIGN(4); __bss_stop = .; + } + .brk : AT(ADDR(.brk) - LOAD_OFFSET) { . = ALIGN(PAGE_SIZE); __brk_base = . ; - . += 64 * 1024 ; /* 64k slop space */ + . += 64 * 1024 ; /* 64k alignment slop space */ *(.brk_reservation) /* areas brk users have reserved */ __brk_limit = . ; - - _end = . ; } + _end = . ; + /* Sections to be discarded */ /DISCARD/ : { *(.exitcall.exit) diff --git a/arch/x86/kernel/vmlinux_64.lds.S b/arch/x86/kernel/vmlinux_64.lds.S index 7996687663a..c8742507b03 100644 --- a/arch/x86/kernel/vmlinux_64.lds.S +++ b/arch/x86/kernel/vmlinux_64.lds.S @@ -247,10 +247,12 @@ SECTIONS *(.bss.page_aligned) *(.bss) __bss_stop = .; + } + .brk : AT(ADDR(.brk) - LOAD_OFFSET) { . = ALIGN(PAGE_SIZE); __brk_base = . ; - . += 64 * 1024; /* 64k slop space */ + . += 64 * 1024 ; /* 64k alignment slop space */ *(.brk_reservation) /* areas brk users have reserved */ __brk_limit = . ; } |