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Nick Desaulniers 815f0ddb34 include/linux/compiler*.h: make compiler-*.h mutually exclusive 
Commit cafa0010cd ("Raise the minimum required gcc version to 4.6")
recently exposed a brittle part of the build for supporting non-gcc
compilers.

Both Clang and ICC define __GNUC__, __GNUC_MINOR__, and
__GNUC_PATCHLEVEL__ for quick compatibility with code bases that haven't
added compiler specific checks for __clang__ or __INTEL_COMPILER.

This is brittle, as they happened to get compatibility by posing as a
certain version of GCC.  This broke when upgrading the minimal version
of GCC required to build the kernel, to a version above what ICC and
Clang claim to be.

Rather than always including compiler-gcc.h then undefining or
redefining macros in compiler-intel.h or compiler-clang.h, let's
separate out the compiler specific macro definitions into mutually
exclusive headers, do more proper compiler detection, and keep shared
definitions in compiler_types.h.

Fixes: cafa0010cd ("Raise the minimum required gcc version to 4.6")
Reported-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Suggested-by: Eli Friedman <efriedma@codeaurora.org>
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2018-08-22 17:31:34 -07:00
..
.gitignore
…
Makefile ARM: bugs: prepare processor bug infrastructure 2018-05-31 10:39:18 +01:00
arch_timer.c
…
armksyms.c ARM: 8745/1: get rid of __memzero() 2018-01-21 15:37:56 +00:00
asm-offsets.c include/linux/compiler*.h: make compiler-*.h mutually exclusive 2018-08-22 17:31:34 -07:00
atags.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atags_compat.c ARM: convert printk(KERN_* to pr_* 2014-11-21 15:24:50 +00:00
atags_parse.c ARM: better diagnostics with missing/corrupt dtb 2017-09-29 13:57:21 +01:00
atags_proc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bios32.c PCI: Remove PCI_REASSIGN_ALL_RSRC use on arm and arm64 2017-12-18 23:07:43 -06:00
bugs.c ARM: bugs: add support for per-processor bug checking 2018-05-31 10:39:34 +01:00
cpuidle.c ARM: Convert to using %pOF instead of full_name 2017-08-16 22:25:30 +02:00
crash_dump.c
…
debug.S Merge branches 'fixes', 'misc' and 'sa1111-for-next' into for-next 2017-11-08 19:42:43 +00:00
devtree.c ARM: Convert to using %pOF instead of full_name 2017-08-16 22:25:30 +02:00
dma-isa.c ARM: convert printk(KERN_* to pr_* 2014-11-21 15:24:50 +00:00
dma.c proc: introduce proc_create_single{,_data} 2018-05-16 07:23:35 +02:00
early_printk.c ARM: 8705/1: early_printk: use printascii() rather than printch() 2017-10-12 11:29:29 +01:00
efi.c ARM/efi: Apply strict permissions for UEFI Runtime Services regions 2016-04-28 11:33:53 +02:00
elf.c Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2017-11-16 12:50:35 -08:00
entry-armv.S ARM: Convert to GENERIC_IRQ_MULTI_HANDLER 2018-08-03 12:14:08 +02:00
entry-common.S ARM: 8781/1: Fix Thumb-2 syscall return for binutils 2.29+ 2018-07-30 11:45:19 +01:00
entry-ftrace.S ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS 2017-06-18 22:25:16 +01:00
entry-header.S ARM: spectre-v1: fix syscall entry 2018-05-31 23:27:26 +01:00
entry-v7m.S ARM: rename S_FRAME_SIZE to PT_REGS_SIZE 2016-06-22 19:54:28 +01:00
fiq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fiqasm.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
ftrace.c ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS 2017-06-18 22:25:16 +01:00
head-common.S ARM: 8745/1: get rid of __memzero() 2018-01-21 15:37:56 +00:00
head-inflate-data.c ARM: XIP kernel: store .data compressed in ROM 2017-09-10 19:34:53 -04:00
head-nommu.S Merge branches 'fixes', 'misc' and 'spectre' into for-linus 2018-08-13 16:28:50 +01:00
head.S ARM: align .data section 2017-08-14 16:22:55 +01:00
hibernate.c ARM: use virt_to_idmap() for soft_restart() 2016-02-08 15:48:32 +00:00
hw_breakpoint.c perf/arch/arm: Implement hw_breakpoint_arch_parse() 2018-06-26 09:07:56 +02:00
hyp-stub.S ARM: align .data section 2017-08-14 16:22:55 +01:00
insn.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
irq.c ARM: Convert to GENERIC_IRQ_MULTI_HANDLER 2018-08-03 12:14:08 +02:00
isa.c arm: convert use of typedef ctl_table to struct ctl_table 2014-06-06 16:08:15 -07:00
iwmmxt.S ARM: align .data section 2017-08-14 16:22:55 +01:00
jump_label.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kgdb.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
machine_kexec.c ARM: kexec: record parent context registers for non-crash CPUs 2018-05-19 11:35:56 +01:00
module-plts.c ARM: 8662/1: module: split core and init PLT sections 2017-03-17 10:01:28 +00:00
module.c ARM: Silence first allocation with CONFIG_ARM_MODULE_PLTS=y 2017-05-11 14:43:31 +01:00
module.lds License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
opcodes.c
…
paravirt.c arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops 2015-12-21 14:40:54 +00:00
patch.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
perf_callchain.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
perf_event_v6.c arm_pmu: Tidy up clear_event_idx call backs 2018-07-10 18:19:02 +01:00
perf_event_v7.c arm_pmu: Tidy up clear_event_idx call backs 2018-07-10 18:19:02 +01:00
perf_event_xscale.c arm_pmu: Tidy up clear_event_idx call backs 2018-07-10 18:19:02 +01:00
perf_regs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pj4-cp0.c ARM: 8452/3: PJ4: make coprocessor access sequences buildable in Thumb2 mode 2016-01-04 11:12:10 +00:00
process.c mm: zero out the vma in vma_init() 2018-08-22 10:52:44 -07:00
psci_smp.c ARM: use const and __initconst for smp_operations 2015-12-01 22:17:45 +01:00
ptrace.c signal: Ensure every siginfo we send has all bits initialized 2018-04-25 10:40:51 -05:00
reboot.c ARM: soft-reboot into same mode that we entered the kernel 2017-04-09 07:49:24 -07:00
reboot.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
relocate_kernel.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
return_address.c ARM: 8328/1: remove empty preprocessor #else branch 2015-03-28 16:54:53 +00:00
setup.c ARM: Convert to GENERIC_IRQ_MULTI_HANDLER 2018-08-03 12:14:08 +02:00
signal.c Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2018-08-13 19:13:38 -07:00
signal.h ARM: signal handling support for FDPIC_FUNCPTRS functions 2017-09-10 19:31:46 -04:00
sigreturn_codes.S ARM: signal handling support for FDPIC_FUNCPTRS functions 2017-09-10 19:31:46 -04:00
sleep.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
smccc-call.S arm: kernel: Add SMC structure parameter 2017-02-03 18:46:33 +00:00
smp.c Merge branches 'fixes', 'misc' and 'spectre' into for-linus 2018-06-05 10:03:27 +01:00
smp_scu.c ARM: smp_scu: allow the platform code to read the SCU CPU status 2017-10-29 08:29:30 -07:00
smp_tlb.c ARM: 8613/1: Fix the uaccess crash on PB11MPCore 2017-01-16 17:30:46 +00:00
smp_twd.c clocksource/drivers: Rename CLOCKSOURCE_OF_DECLARE to TIMER_OF_DECLARE 2017-06-14 11:58:45 +02:00
stacktrace.c ARM: probes: avoid adding kprobes to sensitive kernel-entry/exit code 2017-12-17 22:14:21 +00:00
suspend.c ARM: bugs: hook processor bug checking into SMP and suspend paths 2018-05-31 10:39:29 +01:00
swp_emulate.c Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-06-04 15:23:48 -07:00
sys_arm.c mm: add ksys_fadvise64_64() helper; remove in-kernel call to sys_fadvise64_64() 2018-04-02 20:16:10 +02:00
sys_oabi-compat.c Merge branches 'fixes', 'misc' and 'spectre' into for-linus 2018-08-13 16:28:50 +01:00
tcm.c ARM: 8388/1: tcm: Don't crash when TCM banks are protected by TrustZone 2015-06-06 10:37:28 +01:00
thumbee.c ARM: convert printk(KERN_* to pr_* 2014-11-21 15:24:50 +00:00
time.c ARM/time: Remove read_boot_clock64() 2018-07-20 00:02:41 +02:00
topology.c ARM: Convert to using %pOF instead of full_name 2017-08-16 22:25:30 +02:00
traps.c Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-06-04 15:23:48 -07:00
unwind.c ARM: 8176/1: Use current_stack_pointer in unwind_backtrace 2014-11-13 23:58:09 +00:00
v7m.c
…
vdso.c ARM: 8748/1: mm: Define vdso_start, vdso_end as array 2018-03-24 14:27:49 +00:00
vmlinux-xip.lds.S ARM: 8757/1: NOMMU: Support PMSAv8 MPU 2018-05-19 11:53:46 +01:00
vmlinux.lds.S ARM: 8757/1: NOMMU: Support PMSAv8 MPU 2018-05-19 11:53:46 +01:00
vmlinux.lds.h ARM: 8774/1: remove no-op macro VMLINUX_SYMBOL() 2018-05-19 11:53:46 +01:00
xscale-cp0.c ARM: make xscale iwmmxt code multiplatform aware 2015-12-01 21:44:24 +01:00