Steven Rostedt a2d063ac21 extable, core_kernel_data(): Make sure all archs define _sdata ... A new utility function (core_kernel_data()) is used to determine if a passed in address is part of core kernel data or not. It may or may not return true for RO data, but this utility must work for RW data. Thus both _sdata and _edata must be defined and continuous, without .init sections that may later be freed and replaced by volatile memory (memory that can be freed). This utility function is used to determine if data is safe from ever being freed. Thus it should return true for all RW global data that is not in a module or has been allocated, or false otherwise. Also change core_kernel_data() back to the more precise _sdata condition and document the function. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Hirokazu Takata <takata@linux-m32r.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: linux-m68k@lists.linux-m68k.org Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Helge Deller <deller@gmx.de> Cc: JamesE.J.Bottomley <jejb@parisc-linux.org> Link: http://lkml.kernel.org/r/1305855298.1465.19.camel@gandalf.stny.rr.com Signed-off-by: Ingo Molnar <mingo@elte.hu> ---- arch/alpha/kernel/vmlinux.lds.S | 1 + arch/m32r/kernel/vmlinux.lds.S | 1 + arch/m68k/kernel/vmlinux-std.lds | 2 ++ arch/m68k/kernel/vmlinux-sun3.lds | 1 + arch/mips/kernel/vmlinux.lds.S | 1 + arch/parisc/kernel/vmlinux.lds.S | 3 +++ kernel/extable.c | 12 +++++++++++- 7 files changed, 20 insertions(+), 1 deletion(-)		2011-05-20 08:56:56 +02:00
..
.gitignore
asm-offsets.c
binfmt_elf32.c
cache.c
drivers.c
entry.S	Fix common misspellings	2011-03-31 11:26:23 -03:00
firmware.c
ftrace.c
hardware.c
head.S	Fix common misspellings	2011-03-31 11:26:23 -03:00
hpmc.S
init_task.c
inventory.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
irq.c	parisc: Use irq_to_desc() in show_interrupts()	2011-03-29 14:48:08 +02:00
Makefile
module.c
pa7300lc.c
pacache.S
parisc_ksyms.c
pci-dma.c
pci.c
pdc_chassis.c
pdc_cons.c
perf_asm.S
perf_images.h
perf.c
process.c
processor.c
ptrace.c
real2.S
setup.c
signal32.c
signal32.h
signal.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
smp.c	sched: Provide scheduler_ipi() callback in response to smp_send_reschedule()	2011-04-14 08:52:32 +02:00
stacktrace.c
sys32.h
sys_parisc32.c
sys_parisc.c
syscall_table.S	Fix common misspellings	2011-03-31 11:26:23 -03:00
syscall.S	Fix common misspellings	2011-03-31 11:26:23 -03:00
time.c
topology.c
traps.c
unaligned.c
unwind.c
vmlinux.lds.S	extable, core_kernel_data(): Make sure all archs define _sdata	2011-05-20 08:56:56 +02:00