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a5859c6d7b
linux/arch/x86
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Josh Poimboeuf a5859c6d7b x86/build: convert function graph '-Os' error to warning 
For pre-4.6.0 versions of GCC, which don't have '-mfentry', the
'-maccumulate-outgoing-args' option is required for function graph
tracing in order to avoid GCC bug 42109.

However, GCC ignores '-maccumulate-outgoing-args' when '-Os' is
also set.

Currently we force a build error to prevent that scenario, but that
breaks randconfigs.  So change the error to a warning which also
disables CONFIG_CC_OPTIMIZE_FOR_SIZE.

Reported-by: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kbuild test robot <fengguang.wu@intel.com>
Cc: kbuild-all@01.org
Link: http://lkml.kernel.org/r/20170418214429.o7fbwbmf4nqosezy@treble
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-04-19 09:57:23 +02:00
..
boot x86/boot: Include missing header file 2017-03-31 10:43:42 +02:00
configs x86/build/x86_64_defconfig: Enable CONFIG_R8169 2017-03-06 11:47:43 +01:00
crypto crypto: sha512-mb - Protect sha512 mb ctx mgr access 2017-02-11 17:50:41 +08:00
entry x86/vdso: Ensure vdso32_enabled gets set to valid values only 2017-04-10 18:31:41 +02:00
events sched/clock, x86/perf: Fix "perf test tsc" 2017-03-23 07:31:49 +01:00
hyperv x86/hyperv: Hide unused label 2017-03-01 10:51:40 +01:00
ia32 sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
include x86/vdso: Plug race between mapping and ELF header setup 2017-04-10 18:31:41 +02:00
kernel x86/build: convert function graph '-Os' error to warning 2017-04-19 09:57:23 +02:00
kvm KVM: x86: cleanup the page tracking SRCU instance 2017-03-28 14:08:02 +02:00
lguest clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
lib x86/mce: Fix copy/paste error in exception table entries 2017-03-22 08:43:25 +01:00
math-emu Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mm x86/mm/KASLR: Exclude EFI region from KASLR VA space randomization 2017-03-24 09:04:27 +01:00
net bpf: fix unlocking of jited image when module ronx not set 2017-02-21 13:30:14 -05:00
oprofile x86/oprofile/nmi: Convert to hotplug state machine 2016-11-22 23:34:43 +01:00
pci features and fixes for 4.11 rc1 2017-03-09 12:23:30 -08:00
platform x86/platform/intel-mid: Add power button support for Merrifield 2017-03-13 22:08:28 +01:00
power Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-12-18 13:59:10 -08:00
purgatory kasan: do not sanitize kexec purgatory 2017-03-31 17:13:30 -07:00
ras x86/ras/amd/inj: Change dependency 2017-01-24 09:14:55 +01:00
realmode x86/build: Don't use $(LINUXINCLUDE) twice 2016-11-28 07:49:17 +01:00
tools x86/tools: Fix gcc-7 warning in relocs.c 2016-12-19 11:50:24 +01:00
um sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
video
xen sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
.gitignore
Kbuild Drivers: hv vmbus: Move Hypercall page setup out of common code 2017-01-19 11:42:07 +01:00
Kconfig The usual collection of new drivers, non-critical fixes, and updates 2017-02-25 14:28:06 -08:00
Kconfig.cpu
Kconfig.debug mm: add arch-independent testcases for RODATA 2017-02-27 18:43:48 -08:00
Makefile x86/build: convert function graph '-Os' error to warning 2017-04-19 09:57:23 +02:00
Makefile_32.cpu x86/build: Mostly disable '-maccumulate-outgoing-args' 2017-03-30 11:53:04 +02:00
Makefile.um