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Martin Schwidefsky f318a1229b s390/cmpxchg: use compiler builtins 
The kernel build for s390 fails for gcc compilers with version 3.x,
set the minimum required version of gcc to version 4.3.

As the atomic builtins are available with all gcc 4.x compilers,
use the __sync_val_compare_and_swap and __sync_bool_compare_and_swap
functions to replace the complex macro and inline assembler magic
in include/asm/cmpxchg.h. The compiler can just-do-it and generates
better code with the builtins.

While we are at it use __sync_bool_compare_and_swap for the
_raw_compare_and_swap function in the spinlock code as well.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 		2014-11-03 13:29:47 +01:00
..
vdso32 s390/vdso: fix stack corruption 2014-10-27 13:27:02 +01:00
vdso64 s390/vdso: fix stack corruption 2014-10-27 13:27:02 +01:00
.gitignore s390: add various .gitignore files. 2012-05-16 14:42:41 +02:00
Makefile s390/ftrace: remove 31 bit ftrace support 2014-10-09 09:14:18 +02:00
asm-offsets.c s390/cmpxchg: use compiler builtins 2014-11-03 13:29:47 +01:00
audit.c
…
audit.h
…
base.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
cache.c s390, cacheinfo: Fix CPU hotplug callback registration 2014-03-20 13:43:41 +01:00
compat_audit.c
…
compat_linux.c s390/compat: add sync_file_range and fallocate compat syscalls 2014-03-04 09:05:47 +01:00
compat_linux.h s390: add support for vector extension 2014-10-09 09:14:13 +02:00
compat_ptrace.h [S390] ptrace cleanup 2011-01-05 12:47:31 +01:00
compat_signal.c s390: add support for vector extension 2014-10-09 09:14:13 +02:00
compat_wrapper.c s390: wire up bpf syscall 2014-10-17 14:45:48 +02:00
cpcmd.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
crash_dump.c s390/kdump: add support for vector extension 2014-10-09 09:14:16 +02:00
debug.c s390: convert use of typedef ctl_table to struct ctl_table 2013-10-28 08:36:25 +01:00
diag.c [S390] replace diag10() with diag10_range() function 2011-05-10 17:13:43 +02:00
dis.c s390/disassembler: add vector instructions 2014-10-09 09:14:15 +02:00
dumpstack.c s390: show_registers() should not map user space addresses to kernel symbols 2014-04-11 13:53:27 +02:00
early.c s390/ftrace,kprobes: allow to patch first instruction 2014-10-27 13:27:27 +01:00
ebcdic.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
entry.S At over 200 commits, covering almost all supported architectures, this 2014-06-04 08:47:12 -07:00
entry.h s390: add support for vector extension 2014-10-09 09:14:13 +02:00
entry64.S s390/uprobes: architecture backend for uprobes 2014-09-25 10:52:17 +02:00
ftrace.c s390/kprobes: make use of NOKPROBE_SYMBOL() 2014-10-27 13:27:28 +01:00
head.S s390/head.s: use zero as address for stfl 2014-09-25 10:52:06 +02:00
head31.S s390/mm: Convert bootmem to memblock 2014-05-20 08:58:40 +02:00
head64.S s390: fix kernel crash due to linkage stack instructions 2014-02-05 11:00:50 +01:00
head_kdump.S s390/kdump: Use 64 bit mode for 0x10000 entry point 2012-10-18 17:50:09 +02:00
idle.c s390/kprobes: make use of NOKPROBE_SYMBOL() 2014-10-27 13:27:28 +01:00
ipl.c s390/ipl: Add missing SCSI loadparm attributes to /sys/firmware 2014-09-01 09:56:29 +02:00
irq.c s390/nohz: use a per-cpu flag for arch_needs_cpu 2014-10-09 09:14:02 +02:00
jump_label.c s390/jump-label: add arch_jump_label_transform_static() 2011-10-25 11:54:37 -07:00
kprobes.c s390/kprobes: make use of NOKPROBE_SYMBOL() 2014-10-27 13:27:28 +01:00
lgr.c s390/sysinfo,stsi: change return code handling 2012-09-26 15:45:12 +02:00
machine_kexec.c s390/kdump: add support for vector extension 2014-10-09 09:14:16 +02:00
mcount.S s390/ftrace,kprobes: allow to patch first instruction 2014-10-27 13:27:27 +01:00
module.c mm/arch: use NUMA_NO_NODE 2013-11-13 12:09:05 +09:00
nmi.c Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2014-10-15 07:48:18 +02:00
os_info.c Include missing linux/slab.h inclusions 2013-04-29 15:42:01 -04:00
perf_cpum_cf.c s390: Replace __get_cpu_var uses 2014-08-26 13:45:52 -04:00
perf_cpum_cf_events.c s390/cpum_cf: Export event names in sysfs 2013-12-16 14:37:50 +01:00
perf_cpum_sf.c s390: Replace __get_cpu_var uses 2014-08-26 13:45:52 -04:00
perf_event.c s390/perf: make print_debug_cf() static 2014-03-14 12:59:32 +01:00
pgm_check.S s390: add support for vector extension 2014-10-09 09:14:13 +02:00
process.c s390/kprobes: make use of NOKPROBE_SYMBOL() 2014-10-27 13:27:28 +01:00
processor.c Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2014-10-15 07:48:18 +02:00
ptrace.c Merge git://git.infradead.org/users/eparis/audit 2014-10-19 16:25:56 -07:00
reipl.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
reipl64.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
relocate_kernel.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
relocate_kernel64.S s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
runtime_instr.c s390/irq: Use defines for external interruption codes 2014-04-03 14:30:52 +02:00
s390_ksyms.c s390: use IS_ENABLED to check if a CONFIG is set to y or m 2013-12-16 14:38:04 +01:00
sclp.S s390/irq: Use defines for external interruption codes 2014-04-03 14:30:52 +02:00
setup.c s390/ftrace,kprobes: allow to patch first instruction 2014-10-27 13:27:27 +01:00
signal.c s390: add support for vector extension 2014-10-09 09:14:13 +02:00
smp.c s390/ftrace,kprobes: allow to patch first instruction 2014-10-27 13:27:27 +01:00
stacktrace.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
suspend.c nosave: consolidate __nosave_{begin,end} in <asm/sections.h> 2014-10-09 22:26:04 -04:00
swsusp_asm64.S s390/hibernate: add early resume function 2013-08-30 08:57:15 +02:00
sys_s390.c teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long 2013-03-03 22:46:22 -05:00
syscalls.S s390: wire up bpf syscall 2014-10-17 14:45:48 +02:00
sysinfo.c s390: delete __cpuinit usage from all s390 files 2013-07-14 19:36:53 -04:00
time.c s390/kprobes: make use of NOKPROBE_SYMBOL() 2014-10-27 13:27:28 +01:00
topology.c s390/topology: call set_sched_topology early 2014-09-26 12:22:39 +02:00
traps.c s390/kprobes: make use of NOKPROBE_SYMBOL() 2014-10-27 13:27:28 +01:00
uprobes.c s390/uprobes: fix kprobes dependency 2014-10-17 14:45:51 +02:00
vdso.c arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area 2014-08-08 15:57:27 -07:00
vmlinux.lds.S s390/linker skript: discard exit.data at runtime 2013-02-14 15:55:21 +01:00
vtime.c s390/time: use stck clock fast for do_account_vtime 2014-10-27 13:27:01 +01:00