diff options
Diffstat (limited to 'arch/arm/kernel')
64 files changed, 162 insertions, 429 deletions
diff --git a/arch/arm/kernel/arch_timer.c b/arch/arm/kernel/arch_timer.c index 1791f12c180b..c125582de2e7 100644 --- a/arch/arm/kernel/arch_timer.c +++ b/arch/arm/kernel/arch_timer.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/arch_timer.c * * Copyright (C) 2011 ARM Ltd. * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/init.h> #include <linux/types.h> diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c index 8fa2dc21d332..98bdea51089d 100644 --- a/arch/arm/kernel/armksyms.c +++ b/arch/arm/kernel/armksyms.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/armksyms.c * * Copyright (C) 2000 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/export.h> #include <linux/sched.h> diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c index 28b27104ac0c..c773b829ee8e 100644 --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 1995-2003 Russell King * 2001-2002 Keith Owens @@ -5,10 +6,6 @@ * Generate definitions needed by assembly language modules. * This code generates raw asm output which is post-processed to extract * and format the required data. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/compiler.h> #include <linux/sched.h> diff --git a/arch/arm/kernel/atags.h b/arch/arm/kernel/atags.h index 201100226301..067e12edc341 100644 --- a/arch/arm/kernel/atags.h +++ b/arch/arm/kernel/atags.h @@ -5,7 +5,7 @@ void convert_to_tag_list(struct tag *tags); const struct machine_desc *setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr); #else -static inline const struct machine_desc * +static inline const struct machine_desc * __init __noreturn setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr) { early_print("no ATAGS support: can't continue\n"); diff --git a/arch/arm/kernel/atags_compat.c b/arch/arm/kernel/atags_compat.c index 05c28b12353c..10da11c212cc 100644 --- a/arch/arm/kernel/atags_compat.c +++ b/arch/arm/kernel/atags_compat.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/atags_compat.c * * Copyright (C) 2001 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * We keep the old params compatibility cruft in one place (here) * so we don't end up with lots of mess around other places. * diff --git a/arch/arm/kernel/atags_parse.c b/arch/arm/kernel/atags_parse.c index a8a4333929f5..ce02f92f4ab2 100644 --- a/arch/arm/kernel/atags_parse.c +++ b/arch/arm/kernel/atags_parse.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Tag parsing. * * Copyright (C) 1995-2001 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ /* diff --git a/arch/arm/kernel/bugs.c b/arch/arm/kernel/bugs.c index d41d3598e5e5..14c8dbbb7d2d 100644 --- a/arch/arm/kernel/bugs.c +++ b/arch/arm/kernel/bugs.c @@ -1,4 +1,4 @@ -// SPDX-Identifier: GPL-2.0 +// SPDX-License-Identifier: GPL-2.0 #include <linux/init.h> #include <asm/bugs.h> #include <asm/proc-fns.h> diff --git a/arch/arm/kernel/cpuidle.c b/arch/arm/kernel/cpuidle.c index fda5579123a8..093368e0d020 100644 --- a/arch/arm/kernel/cpuidle.c +++ b/arch/arm/kernel/cpuidle.c @@ -1,12 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright 2012 Linaro Ltd. - * - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: - * - * http://www.opensource.org/licenses/gpl-license.html - * http://www.gnu.org/copyleft/gpl.html */ #include <linux/cpuidle.h> diff --git a/arch/arm/kernel/crash_dump.c b/arch/arm/kernel/crash_dump.c index 5d1286d51154..53cb92435392 100644 --- a/arch/arm/kernel/crash_dump.c +++ b/arch/arm/kernel/crash_dump.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm/kernel/crash_dump.c * @@ -7,10 +8,6 @@ * This code is taken from arch/x86/kernel/crash_dump_64.c * Created by: Hariprasad Nellitheertha (hari@in.ibm.com) * Copyright (C) IBM Corporation, 2004. All rights reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/errno.h> diff --git a/arch/arm/kernel/debug.S b/arch/arm/kernel/debug.S index b795dc2408c0..e112072b579d 100644 --- a/arch/arm/kernel/debug.S +++ b/arch/arm/kernel/debug.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/kernel/debug.S * * Copyright (C) 1994-1999 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * 32-bit debugging code */ #include <linux/linkage.h> @@ -86,7 +83,7 @@ hexbuf_rel: .long hexbuf_addr - . ENTRY(printascii) addruart_current r3, r1, r2 1: teq r0, #0 - ldrneb r1, [r0], #1 + ldrbne r1, [r0], #1 teqne r1, #0 reteq lr 2: teq r1, #'\n' diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c index e3057c1b55b9..39c978698406 100644 --- a/arch/arm/kernel/devtree.c +++ b/arch/arm/kernel/devtree.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/devtree.c * * Copyright (C) 2009 Canonical Ltd. <jeremy.kerr@canonical.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/init.h> diff --git a/arch/arm/kernel/dma-isa.c b/arch/arm/kernel/dma-isa.c index 84363fe7bad2..2d90ecce5a11 100644 --- a/arch/arm/kernel/dma-isa.c +++ b/arch/arm/kernel/dma-isa.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/dma-isa.c * * Copyright (C) 1999-2000 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * ISA DMA primitives * Taken from various sources, including: * linux/include/asm/dma.h: Defines for using and allocating dma channels. @@ -55,6 +52,12 @@ static int isa_get_dma_residue(unsigned int chan, dma_t *dma) return chan < 4 ? count : (count << 1); } +static struct device isa_dma_dev = { + .init_name = "fallback device", + .coherent_dma_mask = ~(dma_addr_t)0, + .dma_mask = &isa_dma_dev.coherent_dma_mask, +}; + static void isa_enable_dma(unsigned int chan, dma_t *dma) { if (dma->invalid) { @@ -89,7 +92,7 @@ static void isa_enable_dma(unsigned int chan, dma_t *dma) dma->sg = &dma->buf; dma->sgcount = 1; dma->buf.length = dma->count; - dma->buf.dma_address = dma_map_single(NULL, + dma->buf.dma_address = dma_map_single(&isa_dma_dev, dma->addr, dma->count, direction); } diff --git a/arch/arm/kernel/dma.c b/arch/arm/kernel/dma.c index 6739d37c2bc5..ba15b8666498 100644 --- a/arch/arm/kernel/dma.c +++ b/arch/arm/kernel/dma.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/dma.c * * Copyright (C) 1995-2000 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Front-end to the DMA handling. This handles the allocation/freeing * of DMA channels, and provides a unified interface to the machines * DMA facilities. diff --git a/arch/arm/kernel/early_printk.c b/arch/arm/kernel/early_printk.c index 9257736ec9fa..03239ca0d5ce 100644 --- a/arch/arm/kernel/early_printk.c +++ b/arch/arm/kernel/early_printk.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/early_printk.c * * Copyright (C) 2009 Sascha Hauer <s.hauer@pengutronix.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/kernel.h> diff --git a/arch/arm/kernel/efi.c b/arch/arm/kernel/efi.c index 9f43ba012d10..e57dbcc89123 100644 --- a/arch/arm/kernel/efi.c +++ b/arch/arm/kernel/efi.c @@ -1,9 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/efi.h> @@ -11,8 +8,7 @@ #include <asm/mach/map.h> #include <asm/mmu_context.h> -static int __init set_permissions(pte_t *ptep, pgtable_t token, - unsigned long addr, void *data) +static int __init set_permissions(pte_t *ptep, unsigned long addr, void *data) { efi_memory_desc_t *md = data; pte_t pte = *ptep; diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index e85a3af9ddeb..0b8cfdd60b90 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/kernel/entry-armv.S * @@ -5,10 +6,6 @@ * ARM700 fix by Matthew Godbolt (linux-user@willothewisp.demon.co.uk) * nommu support by Hyok S. Choi (hyok.choi@samsung.com) * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Low-level vector interface routines * * Note: there is a StrongARM bug in the STMIA rn, {regs}^ instruction @@ -636,7 +633,7 @@ call_fpe: @ Test if we need to give access to iWMMXt coprocessors ldr r5, [r10, #TI_FLAGS] rsbs r7, r8, #(1 << 8) @ CP 0 or 1 only - movcss r7, r5, lsr #(TIF_USING_IWMMXT + 1) + movscs r7, r5, lsr #(TIF_USING_IWMMXT + 1) bcs iwmmxt_task_enable #endif ARM( add pc, pc, r8, lsr #6 ) @@ -872,7 +869,7 @@ __kuser_cmpxchg64: @ 0xffff0f60 smp_dmb arm 1: ldrexd r0, r1, [r2] @ load current val eors r3, r0, r4 @ compare with oldval (1) - eoreqs r3, r1, r5 @ compare with oldval (2) + eorseq r3, r1, r5 @ compare with oldval (2) strexdeq r3, r6, r7, [r2] @ store newval if eq teqeq r3, #1 @ success? beq 1b @ if no then retry @@ -896,8 +893,8 @@ __kuser_cmpxchg64: @ 0xffff0f60 ldmia r1, {r6, lr} @ load new val 1: ldmia r2, {r0, r1} @ load current val eors r3, r0, r4 @ compare with oldval (1) - eoreqs r3, r1, r5 @ compare with oldval (2) -2: stmeqia r2, {r6, lr} @ store newval if eq + eorseq r3, r1, r5 @ compare with oldval (2) +2: stmiaeq r2, {r6, lr} @ store newval if eq rsbs r0, r3, #0 @ set return val and C flag ldmfd sp!, {r4, r5, r6, pc} @@ -911,7 +908,7 @@ kuser_cmpxchg64_fixup: mov r7, #0xffff0fff sub r7, r7, #(0xffff0fff - (0xffff0f60 + (1b - __kuser_cmpxchg64))) subs r8, r4, r7 - rsbcss r8, r8, #(2b - 1b) + rsbscs r8, r8, #(2b - 1b) strcs r7, [sp, #S_PC] #if __LINUX_ARM_ARCH__ < 6 bcc kuser_cmpxchg32_fixup @@ -969,7 +966,7 @@ kuser_cmpxchg32_fixup: mov r7, #0xffff0fff sub r7, r7, #(0xffff0fff - (0xffff0fc0 + (1b - __kuser_cmpxchg))) subs r8, r4, r7 - rsbcss r8, r8, #(2b - 1b) + rsbscs r8, r8, #(2b - 1b) strcs r7, [sp, #S_PC] ret lr .previous diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 0465d65d23de..271cb8a1eba1 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -1,11 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/kernel/entry-common.S * * Copyright (C) 2000 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <asm/assembler.h> @@ -373,7 +370,7 @@ sys_syscall: movhs scno, #0 csdb #endif - stmloia sp, {r5, r6} @ shuffle args + stmialo sp, {r5, r6} @ shuffle args movlo r0, r1 movlo r1, r2 movlo r2, r3 diff --git a/arch/arm/kernel/entry-ftrace.S b/arch/arm/kernel/entry-ftrace.S index 0be69e551a64..a74289ebc803 100644 --- a/arch/arm/kernel/entry-ftrace.S +++ b/arch/arm/kernel/entry-ftrace.S @@ -1,8 +1,4 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ +/* SPDX-License-Identifier: GPL-2.0-only */ #include <asm/assembler.h> #include <asm/ftrace.h> diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S index 773424843d6e..32051ec5b33f 100644 --- a/arch/arm/kernel/entry-header.S +++ b/arch/arm/kernel/entry-header.S @@ -127,7 +127,8 @@ */ .macro v7m_exception_slow_exit ret_r0 cpsid i - ldr lr, =EXC_RET_THREADMODE_PROCESSSTACK + ldr lr, =exc_ret + ldr lr, [lr] @ read original r12, sp, lr, pc and xPSR add r12, sp, #S_IP @@ -387,8 +388,8 @@ badr lr, \ret @ return address .if \reload add r1, sp, #S_R0 + S_OFF @ pointer to regs - ldmccia r1, {r0 - r6} @ reload r0-r6 - stmccia sp, {r4, r5} @ update stack arguments + ldmiacc r1, {r0 - r6} @ reload r0-r6 + stmiacc sp, {r4, r5} @ update stack arguments .endif ldrcc pc, [\table, \tmp, lsl #2] @ call sys_* routine #else @@ -396,8 +397,8 @@ badr lr, \ret @ return address .if \reload add r1, sp, #S_R0 + S_OFF @ pointer to regs - ldmccia r1, {r0 - r6} @ reload r0-r6 - stmccia sp, {r4, r5} @ update stack arguments + ldmiacc r1, {r0 - r6} @ reload r0-r6 + stmiacc sp, {r4, r5} @ update stack arguments .endif ldrcc pc, [\table, \nr, lsl #2] @ call sys_* routine #endif diff --git a/arch/arm/kernel/entry-v7m.S b/arch/arm/kernel/entry-v7m.S index abcf47848525..de1f20624be1 100644 --- a/arch/arm/kernel/entry-v7m.S +++ b/arch/arm/kernel/entry-v7m.S @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/kernel/entry-v7m.S * * Copyright (C) 2008 ARM Ltd. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Low-level vector interface routines for the ARMv7-M architecture */ #include <asm/memory.h> @@ -146,3 +143,7 @@ ENTRY(vector_table) .rept CONFIG_CPU_V7M_NUM_IRQ .long __irq_entry @ External Interrupts .endr + .align 2 + .globl exc_ret +exc_ret: + .space 4 diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S index 997b02302c31..a7810be07da1 100644 --- a/arch/arm/kernel/head-common.S +++ b/arch/arm/kernel/head-common.S @@ -1,14 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/kernel/head-common.S * * Copyright (C) 1994-2002 Russell King * Copyright (c) 2003 ARM Limited * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * */ #include <asm/assembler.h> diff --git a/arch/arm/kernel/head-inflate-data.c b/arch/arm/kernel/head-inflate-data.c index 6dd0ce5e6058..89a52104d32a 100644 --- a/arch/arm/kernel/head-inflate-data.c +++ b/arch/arm/kernel/head-inflate-data.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * XIP kernel .data segment decompressor * * Created by: Nicolas Pitre, August 2017 * Copyright: (C) 2017 Linaro Limited - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/init.h> diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S index ec29de250076..afa350f44dea 100644 --- a/arch/arm/kernel/head-nommu.S +++ b/arch/arm/kernel/head-nommu.S @@ -1,15 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/kernel/head-nommu.S * * Copyright (C) 1994-2002 Russell King * Copyright (C) 2003-2006 Hyok S. Choi * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Common kernel startup code (non-paged MM) - * */ #include <linux/linkage.h> #include <linux/init.h> @@ -133,9 +129,9 @@ __secondary_data: */ .text __after_proc_init: -#ifdef CONFIG_ARM_MPU M_CLASS(movw r12, #:lower16:BASEADDR_V7M_SCB) M_CLASS(movt r12, #:upper16:BASEADDR_V7M_SCB) +#ifdef CONFIG_ARM_MPU M_CLASS(ldr r3, [r12, 0x50]) AR_CLASS(mrc p15, 0, r3, c0, c1, 4) @ Read ID_MMFR0 and r3, r3, #(MMFR0_PMSA) @ PMSA field @@ -439,8 +435,8 @@ M_CLASS(str r6, [r12, #PMSAv8_RLAR_A(3)]) str r5, [r12, #PMSAv8_RBAR_A(0)] str r6, [r12, #PMSAv8_RLAR_A(0)] #else - mcr p15, 0, r5, c6, c10, 1 @ PRBAR4 - mcr p15, 0, r6, c6, c10, 2 @ PRLAR4 + mcr p15, 0, r5, c6, c10, 0 @ PRBAR4 + mcr p15, 0, r6, c6, c10, 1 @ PRLAR4 #endif #endif ret lr diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 4485d0404514..c49b39340ddb 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/kernel/head.S * @@ -5,10 +6,6 @@ * Copyright (c) 2003 ARM Limited * All Rights Reserved * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Kernel startup code for all 32-bit CPUs */ #include <linux/linkage.h> diff --git a/arch/arm/kernel/hibernate.c b/arch/arm/kernel/hibernate.c index b09561a6d06a..2373020af965 100644 --- a/arch/arm/kernel/hibernate.c +++ b/arch/arm/kernel/hibernate.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Hibernation support specific for ARM * @@ -11,8 +12,6 @@ * https://patchwork.kernel.org/patch/96442/ * * Copyright (C) 2006 Rafael J. Wysocki <rjw@sisk.pl> - * - * License terms: GNU General Public License (GPL) version 2 */ #include <linux/mm.h> diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c index 1d5fbf1d1c67..af8b8e15f589 100644 --- a/arch/arm/kernel/hw_breakpoint.c +++ b/arch/arm/kernel/hw_breakpoint.c @@ -1,16 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-only /* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * Copyright (C) 2009, 2010 ARM Limited * diff --git a/arch/arm/kernel/hyp-stub.S b/arch/arm/kernel/hyp-stub.S index 60146e32619a..ae5020302de4 100644 --- a/arch/arm/kernel/hyp-stub.S +++ b/arch/arm/kernel/hyp-stub.S @@ -1,19 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (c) 2012 Linaro Limited. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include <linux/init.h> @@ -180,8 +167,8 @@ ARM_BE8(orr r7, r7, #(1 << 25)) @ HSCTLR.EE @ Check whether GICv3 system registers are available mrc p15, 0, r7, c0, c1, 1 @ ID_PFR1 ubfx r7, r7, #28, #4 - cmp r7, #1 - bne 2f + teq r7, #0 + beq 2f @ Enable system register accesses mrc p15, 4, r7, c12, c9, 5 @ ICC_HSRE diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c index 844861368cd5..ee514034c0a1 100644 --- a/arch/arm/kernel/irq.c +++ b/arch/arm/kernel/irq.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/irq.c * @@ -8,10 +9,6 @@ * Dynamic Tick Timer written by Tony Lindgren <tony@atomide.com> and * Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This file contains the code used by various IRQ handling routines: * asking for different IRQ's should be done through these routines * instead of just grabbing them. Thus setups with different IRQ numbers diff --git a/arch/arm/kernel/isa.c b/arch/arm/kernel/isa.c index 9d1cf7156895..d8a509c5d5bd 100644 --- a/arch/arm/kernel/isa.c +++ b/arch/arm/kernel/isa.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * linux/arch/arm/kernel/isa.c * * Copyright (C) 1999 Phil Blundell * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * * ISA shared memory and I/O port support, and is required to support * iopl, inb, outb and friends in userspace via glibc emulation. */ diff --git a/arch/arm/kernel/iwmmxt.S b/arch/arm/kernel/iwmmxt.S index 81cd4d43b3ec..0dcae787b004 100644 --- a/arch/arm/kernel/iwmmxt.S +++ b/arch/arm/kernel/iwmmxt.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/arm/kernel/iwmmxt.S * @@ -8,10 +9,6 @@ * * Full lazy switching support, optimizations and more, by Nicolas Pitre * Copyright (c) 2003-2004, MontaVista Software, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/linkage.h> diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c index dd2eb5f76b9f..76300f3813e8 100644 --- a/arch/arm/kernel/machine_kexec.c +++ b/arch/arm/kernel/machine_kexec.c @@ -91,8 +91,11 @@ void machine_crash_nonpanic_core(void *unused) set_cpu_online(smp_processor_id(), false); atomic_dec(&waiting_for_crash_ipi); - while (1) + + while (1) { cpu_relax(); + wfe(); + } } void crash_smp_send_stop(void) diff --git a/arch/arm/kernel/module-plts.c b/arch/arm/kernel/module-plts.c index 3d0c2e4dda1d..b647741c0ab0 100644 --- a/arch/arm/kernel/module-plts.c +++ b/arch/arm/kernel/module-plts.c @@ -1,9 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2014-2017 Linaro Ltd. <ard.biesheuvel@linaro.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/elf.h> diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c index 3ff571c2c71c..b3d439c41c7b 100644 --- a/arch/arm/kernel/module.c +++ b/arch/arm/kernel/module.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/module.c * * Copyright (C) 2002 Russell King. * Modified for nommu by Hyok S. Choi * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Module allocation method suggested by Andi Kleen. */ #include <linux/module.h> diff --git a/arch/arm/kernel/opcodes.c b/arch/arm/kernel/opcodes.c index f8179c6a817f..651914947443 100644 --- a/arch/arm/kernel/opcodes.c +++ b/arch/arm/kernel/opcodes.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/opcodes.c * * A32 condition code lookup feature moved from nwfpe/fpopcode.c - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> diff --git a/arch/arm/kernel/paravirt.c b/arch/arm/kernel/paravirt.c index 75c158b0353f..4cfed91fe256 100644 --- a/arch/arm/kernel/paravirt.c +++ b/arch/arm/kernel/paravirt.c @@ -1,12 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-only /* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. * * Copyright (C) 2013 Citrix Systems * diff --git a/arch/arm/kernel/patch.c b/arch/arm/kernel/patch.c index a50dc00d79a2..d0a05a3bdb96 100644 --- a/arch/arm/kernel/patch.c +++ b/arch/arm/kernel/patch.c @@ -16,7 +16,7 @@ struct patch { unsigned int insn; }; -static DEFINE_SPINLOCK(patch_lock); +static DEFINE_RAW_SPINLOCK(patch_lock); static void __kprobes *patch_map(void *addr, int fixmap, unsigned long *flags) __acquires(&patch_lock) @@ -33,7 +33,7 @@ static void __kprobes *patch_map(void *addr, int fixmap, unsigned long *flags) return addr; if (flags) - spin_lock_irqsave(&patch_lock, *flags); + raw_spin_lock_irqsave(&patch_lock, *flags); else __acquire(&patch_lock); @@ -48,7 +48,7 @@ static void __kprobes patch_unmap(int fixmap, unsigned long *flags) clear_fixmap(fixmap); if (flags) - spin_unlock_irqrestore(&patch_lock, *flags); + raw_spin_unlock_irqrestore(&patch_lock, *flags); else __release(&patch_lock); } diff --git a/arch/arm/kernel/pj4-cp0.c b/arch/arm/kernel/pj4-cp0.c index 7c9248b74d3f..1d1fb22f44f3 100644 --- a/arch/arm/kernel/pj4-cp0.c +++ b/arch/arm/kernel/pj4-cp0.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/pj4-cp0.c * * PJ4 iWMMXt coprocessor context switching and handling * * Copyright (c) 2010 Marvell International Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/types.h> diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 16601d1442d1..f934a6739fc0 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/process.c * * Copyright (C) 1996-2000 Russell King - Converted to ARM. * Original Copyright (C) 1995 Linus Torvalds - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <stdarg.h> @@ -150,7 +147,7 @@ void __show_regs(struct pt_regs *regs) if ((domain & domain_mask(DOMAIN_USER)) == domain_val(DOMAIN_USER, DOMAIN_NOACCESS)) segment = "none"; - else if (fs == get_ds()) + else if (fs == KERNEL_DS) segment = "kernel"; else segment = "user"; diff --git a/arch/arm/kernel/psci_smp.c b/arch/arm/kernel/psci_smp.c index cb3fcaeb2233..aba6b2ab7a58 100644 --- a/arch/arm/kernel/psci_smp.c +++ b/arch/arm/kernel/psci_smp.c @@ -1,12 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-only /* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. * * Copyright (C) 2012 ARM Limited * diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index 6fa5b6387556..324352787aea 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/ptrace.c * * By Ross Biro 1/23/92 * edited by Linus Torvalds * ARM modifications Copyright (C) 2000 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/kernel.h> #include <linux/sched/signal.h> @@ -201,15 +198,15 @@ void ptrace_disable(struct task_struct *child) /* * Handle hitting a breakpoint. */ -void ptrace_break(struct task_struct *tsk, struct pt_regs *regs) +void ptrace_break(struct pt_regs *regs) { force_sig_fault(SIGTRAP, TRAP_BRKPT, - (void __user *)instruction_pointer(regs), tsk); + (void __user *)instruction_pointer(regs)); } static int break_trap(struct pt_regs *regs, unsigned int instr) { - ptrace_break(current, regs); + ptrace_break(regs); return 0; } diff --git a/arch/arm/kernel/reboot.c b/arch/arm/kernel/reboot.c index 3b2aa9a9fe26..bb18ed0539f4 100644 --- a/arch/arm/kernel/reboot.c +++ b/arch/arm/kernel/reboot.c @@ -1,10 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 1996-2000 Russell King - Converted to ARM. * Original Copyright (C) 1995 Linus Torvalds - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/cpu.h> #include <linux/delay.h> diff --git a/arch/arm/kernel/return_address.c b/arch/arm/kernel/return_address.c index 36ed35073289..b0d2f1fe891d 100644 --- a/arch/arm/kernel/return_address.c +++ b/arch/arm/kernel/return_address.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm/kernel/return_address.c * * Copyright (C) 2009 Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de> * for Pengutronix - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. */ #include <linux/export.h> #include <linux/ftrace.h> diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 375b13f7e780..d0a464e317ea 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/setup.c * * Copyright (C) 1995-2001 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/efi.h> #include <linux/export.h> @@ -867,6 +864,9 @@ static void __init request_standard_resources(const struct machine_desc *mdesc) boot_alias_start = phys_to_idmap(start); if (arm_has_idmap_alias() && boot_alias_start != IDMAP_INVALID_ADDR) { res = memblock_alloc(sizeof(*res), SMP_CACHE_BYTES); + if (!res) + panic("%s: Failed to allocate %zu bytes\n", + __func__, sizeof(*res)); res->name = "System RAM (boot alias)"; res->start = boot_alias_start; res->end = phys_to_idmap(end); @@ -875,6 +875,9 @@ static void __init request_standard_resources(const struct machine_desc *mdesc) } res = memblock_alloc(sizeof(*res), SMP_CACHE_BYTES); + if (!res) + panic("%s: Failed to allocate %zu bytes\n", __func__, + sizeof(*res)); res->name = "System RAM"; res->start = start; res->end = end; diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index 76bb8de6bf6b..09f6fdd41974 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/signal.c * * Copyright (C) 1995-2009 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/errno.h> #include <linux/random.h> @@ -250,7 +247,7 @@ asmlinkage int sys_sigreturn(struct pt_regs *regs) return regs->ARM_r0; badframe: - force_sig(SIGSEGV, current); + force_sig(SIGSEGV); return 0; } @@ -283,7 +280,7 @@ asmlinkage int sys_rt_sigreturn(struct pt_regs *regs) return regs->ARM_r0; badframe: - force_sig(SIGSEGV, current); + force_sig(SIGSEGV); return 0; } @@ -549,8 +546,7 @@ static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) int ret; /* - * Increment event counter and perform fixup for the pre-signal - * frame. + * Perform fixup for the pre-signal frame. */ rseq_signal_deliver(ksig, regs); diff --git a/arch/arm/kernel/sigreturn_codes.S b/arch/arm/kernel/sigreturn_codes.S index 2c7b22e32152..7540ec51d16c 100644 --- a/arch/arm/kernel/sigreturn_codes.S +++ b/arch/arm/kernel/sigreturn_codes.S @@ -1,17 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * sigreturn_codes.S - code sinpets for sigreturn syscalls * * Created by: Victor Kamensky, 2013-08-13 * Copyright: (C) 2013 Linaro Limited - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <asm/assembler.h> diff --git a/arch/arm/kernel/sleep.S b/arch/arm/kernel/sleep.S index a8257fc9cf2a..5dc8b80bb693 100644 --- a/arch/arm/kernel/sleep.S +++ b/arch/arm/kernel/sleep.S @@ -120,6 +120,14 @@ ENDPROC(cpu_resume_after_mmu) .text .align +#ifdef CONFIG_MCPM + .arm +THUMB( .thumb ) +ENTRY(cpu_resume_no_hyp) +ARM_BE8(setend be) @ ensure we are in BE mode + b no_hyp +#endif + #ifdef CONFIG_MMU .arm ENTRY(cpu_resume_arm) @@ -135,6 +143,7 @@ ARM_BE8(setend be) @ ensure we are in BE mode bl __hyp_stub_install_secondary #endif safe_svcmode_maskall r1 +no_hyp: mov r1, #0 ALT_SMP(mrc p15, 0, r0, c0, c0, 5) ALT_UP_B(1f) @@ -164,6 +173,9 @@ ENDPROC(cpu_resume) #ifdef CONFIG_MMU ENDPROC(cpu_resume_arm) #endif +#ifdef CONFIG_MCPM +ENDPROC(cpu_resume_no_hyp) +#endif .align 2 _sleep_save_sp: diff --git a/arch/arm/kernel/smccc-call.S b/arch/arm/kernel/smccc-call.S index e5d43066b889..00664c78faca 100644 --- a/arch/arm/kernel/smccc-call.S +++ b/arch/arm/kernel/smccc-call.S @@ -1,15 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (c) 2015, Linaro Limited - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * */ #include <linux/linkage.h> diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 1d6f5ea522f4..aab8ba40ce38 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/smp.c * * Copyright (C) 2002 ARM Limited, All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/delay.h> @@ -62,12 +59,6 @@ */ struct secondary_data secondary_data; -/* - * control for which core is the next to come out of the secondary - * boot "holding pen" - */ -volatile int pen_release = -1; - enum ipi_msg_type { IPI_WAKEUP, IPI_TIMER, @@ -76,6 +67,10 @@ enum ipi_msg_type { IPI_CPU_STOP, IPI_IRQ_WORK, IPI_COMPLETION, + /* + * CPU_BACKTRACE is special and not included in NR_IPI + * or tracable with trace_ipi_* + */ IPI_CPU_BACKTRACE, /* * SGI8-15 can be reserved by secure firmware, and thus may @@ -377,6 +372,7 @@ static void smp_store_cpu_info(unsigned int cpuid) cpu_info->cpuid = read_cpuid_id(); store_cpu_topology(cpuid); + check_cpu_icache_size(cpuid); } /* @@ -604,8 +600,10 @@ static void ipi_cpu_stop(unsigned int cpu) local_fiq_disable(); local_irq_disable(); - while (1) + while (1) { cpu_relax(); + wfe(); + } } static DEFINE_PER_CPU(struct completion *, cpu_completion); @@ -758,15 +756,20 @@ static int cpufreq_callback(struct notifier_block *nb, unsigned long val, void *data) { struct cpufreq_freqs *freq = data; - int cpu = freq->cpu; + struct cpumask *cpus = freq->policy->cpus; + int cpu, first = cpumask_first(cpus); + unsigned int lpj; if (freq->flags & CPUFREQ_CONST_LOOPS) return NOTIFY_OK; - if (!per_cpu(l_p_j_ref, cpu)) { - per_cpu(l_p_j_ref, cpu) = - per_cpu(cpu_data, cpu).loops_per_jiffy; - per_cpu(l_p_j_ref_freq, cpu) = freq->old; + if (!per_cpu(l_p_j_ref, first)) { + for_each_cpu(cpu, cpus) { + per_cpu(l_p_j_ref, cpu) = + per_cpu(cpu_data, cpu).loops_per_jiffy; + per_cpu(l_p_j_ref_freq, cpu) = freq->old; + } + if (!global_l_p_j_ref) { global_l_p_j_ref = loops_per_jiffy; global_l_p_j_ref_freq = freq->old; @@ -778,10 +781,11 @@ static int cpufreq_callback(struct notifier_block *nb, loops_per_jiffy = cpufreq_scale(global_l_p_j_ref, global_l_p_j_ref_freq, freq->new); - per_cpu(cpu_data, cpu).loops_per_jiffy = - cpufreq_scale(per_cpu(l_p_j_ref, cpu), - per_cpu(l_p_j_ref_freq, cpu), - freq->new); + + lpj = cpufreq_scale(per_cpu(l_p_j_ref, first), + per_cpu(l_p_j_ref_freq, first), freq->new); + for_each_cpu(cpu, cpus) + per_cpu(cpu_data, cpu).loops_per_jiffy = lpj; } return NOTIFY_OK; } @@ -801,7 +805,7 @@ core_initcall(register_cpufreq_notifier); static void raise_nmi(cpumask_t *mask) { - smp_cross_call(mask, IPI_CPU_BACKTRACE); + __smp_cross_call(mask, IPI_CPU_BACKTRACE); } void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self) diff --git a/arch/arm/kernel/smp_scu.c b/arch/arm/kernel/smp_scu.c index c6b33074c393..6de47fb3b828 100644 --- a/arch/arm/kernel/smp_scu.c +++ b/arch/arm/kernel/smp_scu.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/smp_scu.c * * Copyright (C) 2002 ARM Ltd. * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/init.h> #include <linux/io.h> diff --git a/arch/arm/kernel/smp_tlb.c b/arch/arm/kernel/smp_tlb.c index 9af0701f7094..d4908b3736d8 100644 --- a/arch/arm/kernel/smp_tlb.c +++ b/arch/arm/kernel/smp_tlb.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/smp_tlb.c * * Copyright (C) 2002 ARM Limited, All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/preempt.h> #include <linux/smp.h> diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index b30eafeef096..9a14f721a2b0 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c @@ -1,12 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/smp_twd.c * * Copyright (C) 2002 ARM Ltd. * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/init.h> #include <linux/kernel.h> @@ -100,8 +97,6 @@ static void twd_timer_stop(void) disable_percpu_irq(clk->irq); } -#ifdef CONFIG_COMMON_CLK - /* * Updates clockevent frequency when the cpu frequency changes. * Called on the cpu that is changing frequency with interrupts disabled. @@ -143,54 +138,6 @@ static int twd_clk_init(void) } core_initcall(twd_clk_init); -#elif defined (CONFIG_CPU_FREQ) - -#include <linux/cpufreq.h> - -/* - * Updates clockevent frequency when the cpu frequency changes. - * Called on the cpu that is changing frequency with interrupts disabled. - */ -static void twd_update_frequency(void *data) -{ - twd_timer_rate = clk_get_rate(twd_clk); - - clockevents_update_freq(raw_cpu_ptr(twd_evt), twd_timer_rate); -} - -static int twd_cpufreq_transition(struct notifier_block *nb, - unsigned long state, void *data) -{ - struct cpufreq_freqs *freqs = data; - - /* - * The twd clock events must be reprogrammed to account for the new - * frequency. The timer is local to a cpu, so cross-call to the - * changing cpu. - */ - if (state == CPUFREQ_POSTCHANGE) - smp_call_function_single(freqs->cpu, twd_update_frequency, - NULL, 1); - - return NOTIFY_OK; -} - -static struct notifier_block twd_cpufreq_nb = { - .notifier_call = twd_cpufreq_transition, -}; - -static int twd_cpufreq_init(void) -{ - if (twd_evt && raw_cpu_ptr(twd_evt) && !IS_ERR(twd_clk)) - return cpufreq_register_notifier(&twd_cpufreq_nb, - CPUFREQ_TRANSITION_NOTIFIER); - - return 0; -} -core_initcall(twd_cpufreq_init); - -#endif - static void twd_calibrate_rate(void) { unsigned long count; @@ -366,21 +313,6 @@ out_free: return err; } -int __init twd_local_timer_register(struct twd_local_timer *tlt) -{ - if (twd_base || twd_evt) - return -EBUSY; - - twd_ppi = tlt->res[1].start; - - twd_base = ioremap(tlt->res[0].start, resource_size(&tlt->res[0])); - if (!twd_base) - return -ENOMEM; - - return twd_local_timer_common_register(NULL); -} - -#ifdef CONFIG_OF static int __init twd_local_timer_of_register(struct device_node *np) { int err; @@ -406,4 +338,3 @@ out: TIMER_OF_DECLARE(arm_twd_a9, "arm,cortex-a9-twd-timer", twd_local_timer_of_register); TIMER_OF_DECLARE(arm_twd_a5, "arm,cortex-a5-twd-timer", twd_local_timer_of_register); TIMER_OF_DECLARE(arm_twd_11mp, "arm,arm11mp-twd-timer", twd_local_timer_of_register); -#endif diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c index a56e7c856ab5..71778bb0475b 100644 --- a/arch/arm/kernel/stacktrace.c +++ b/arch/arm/kernel/stacktrace.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only #include <linux/export.h> #include <linux/sched.h> #include <linux/sched/debug.h> @@ -115,8 +116,6 @@ static noinline void __save_stack_trace(struct task_struct *tsk, * running on another CPU? For now, ignore it as we * can't guarantee we won't explode. */ - if (trace->nr_entries < trace->max_entries) - trace->entries[trace->nr_entries++] = ULONG_MAX; return; #else frame.fp = thread_saved_fp(tsk); @@ -134,8 +133,6 @@ static noinline void __save_stack_trace(struct task_struct *tsk, } walk_stackframe(&frame, save_trace, &data); - if (trace->nr_entries < trace->max_entries) - trace->entries[trace->nr_entries++] = ULONG_MAX; } void save_stack_trace_regs(struct pt_regs *regs, struct stack_trace *trace) @@ -153,8 +150,6 @@ void save_stack_trace_regs(struct pt_regs *regs, struct stack_trace *trace) frame.pc = regs->ARM_pc; walk_stackframe(&frame, save_trace, &data); - if (trace->nr_entries < trace->max_entries) - trace->entries[trace->nr_entries++] = ULONG_MAX; } void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) diff --git a/arch/arm/kernel/swp_emulate.c b/arch/arm/kernel/swp_emulate.c index 76f6e6a9736c..e640871328c1 100644 --- a/arch/arm/kernel/swp_emulate.c +++ b/arch/arm/kernel/swp_emulate.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/swp_emulate.c * * Copyright (C) 2009 ARM Limited * __user_* functions adapted from include/asm/uaccess.h * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Implements emulation of the SWP/SWPB instructions using load-exclusive and * store-exclusive for processors that have them disabled (or future ones that * might not implement them). diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c index bdf7514204ab..a5f183cfecb1 100644 --- a/arch/arm/kernel/sys_arm.c +++ b/arch/arm/kernel/sys_arm.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/sys_arm.c * * Copyright (C) People who wrote linux/arch/i386/kernel/sys_i386.c * Copyright (C) 1995, 1996 Russell King. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This file contains various random system calls that * have a non-standard calling sequence on the Linux/arm * platform. diff --git a/arch/arm/kernel/sys_oabi-compat.c b/arch/arm/kernel/sys_oabi-compat.c index 92ab36f38795..17bd32b22371 100644 --- a/arch/arm/kernel/sys_oabi-compat.c +++ b/arch/arm/kernel/sys_oabi-compat.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm/kernel/sys_oabi-compat.c * @@ -7,10 +8,6 @@ * Author: Nicolas Pitre * Created: Oct 7, 2005 * Copyright: MontaVista Software, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ /* @@ -317,10 +314,10 @@ struct oabi_sembuf { asmlinkage long sys_oabi_semtimedop(int semid, struct oabi_sembuf __user *tsops, unsigned nsops, - const struct timespec __user *timeout) + const struct old_timespec32 __user *timeout) { struct sembuf *sops; - struct timespec local_timeout; + struct old_timespec32 local_timeout; long err; int i; @@ -350,7 +347,7 @@ asmlinkage long sys_oabi_semtimedop(int semid, } else { mm_segment_t fs = get_fs(); set_fs(KERNEL_DS); - err = sys_semtimedop(semid, sops, nsops, timeout); + err = sys_semtimedop_time32(semid, sops, nsops, timeout); set_fs(fs); } kfree(sops); @@ -375,7 +372,7 @@ asmlinkage int sys_oabi_ipc(uint call, int first, int second, int third, return sys_oabi_semtimedop(first, (struct oabi_sembuf __user *)ptr, second, - (const struct timespec __user *)fifth); + (const struct old_timespec32 __user *)fifth); default: return sys_ipc(call, first, second, third, ptr, fifth); } diff --git a/arch/arm/kernel/tcm.c b/arch/arm/kernel/tcm.c index b10e1360762e..9d9b1db73932 100644 --- a/arch/arm/kernel/tcm.c +++ b/arch/arm/kernel/tcm.c @@ -1,6 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2008-2009 ST-Ericsson AB - * License terms: GNU General Public License (GPL) version 2 * TCM memory handling for ARM systems * * Author: Linus Walleij <linus.walleij@stericsson.com> diff --git a/arch/arm/kernel/thumbee.c b/arch/arm/kernel/thumbee.c index 8ff8dbfbe9fb..d832eb9e6235 100644 --- a/arch/arm/kernel/thumbee.c +++ b/arch/arm/kernel/thumbee.c @@ -1,20 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm/kernel/thumbee.c * * Copyright (C) 2008 ARM Limited - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/kernel.h> diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c index 078b259ead4e..b996b2cf0703 100644 --- a/arch/arm/kernel/time.c +++ b/arch/arm/kernel/time.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/time.c * * Copyright (C) 1991, 1992, 1995 Linus Torvalds * Modifications for ARM (C) 1994-2001 Russell King * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * This file contains the ARM-specific time handling details: * reading the RTC at bootup, etc... */ diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c index 60e375ce1ab2..d17cb1e6d679 100644 --- a/arch/arm/kernel/topology.c +++ b/arch/arm/kernel/topology.c @@ -169,7 +169,7 @@ static void update_cpu_capacity(unsigned int cpu) topology_set_cpu_scale(cpu, cpu_capacity(cpu) / middle_capacity); pr_info("CPU%u: update cpu_capacity %lu\n", - cpu, topology_get_cpu_scale(NULL, cpu)); + cpu, topology_get_cpu_scale(cpu)); } #else diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index 33af097c454b..c053abd1fb53 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/traps.c * * Copyright (C) 1995-2009 Russell King * Fragments that appear the same as linux/arch/i386/kernel/traps.c (C) Linus Torvalds * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * 'traps.c' handles hardware exceptions after we have saved some state in * 'linux/arch/arm/lib/traps.S'. Mostly a debugging aid, but will probably * kill the offending process. @@ -372,7 +369,7 @@ void arm_notify_die(const char *str, struct pt_regs *regs, current->thread.error_code = err; current->thread.trap_no = trap; - force_sig_fault(signo, si_code, addr, current); + force_sig_fault(signo, si_code, addr); } else { die(str, regs, err); } @@ -606,7 +603,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs) case NR(breakpoint): /* SWI BREAK_POINT */ regs->ARM_pc -= thumb_mode(regs) ? 2 : 4; - ptrace_break(current, regs); + ptrace_break(regs); return regs->ARM_r0; /* @@ -725,10 +722,11 @@ baddataabort(int code, unsigned long instr, struct pt_regs *regs) #ifdef CONFIG_DEBUG_USER if (user_debug & UDBG_BADABORT) { + pr_err("8<--- cut here ---\n"); pr_err("[%d] %s: bad data abort: code %d instr 0x%08lx\n", task_pid_nr(current), current->comm, code, instr); dump_instr(KERN_ERR, regs); - show_pte(current->mm, addr); + show_pte(KERN_ERR, current->mm, addr); } #endif diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c index 0bee233fef9a..4574e6aea0a5 100644 --- a/arch/arm/kernel/unwind.c +++ b/arch/arm/kernel/unwind.c @@ -1,22 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm/kernel/unwind.c * * Copyright (C) 2008 ARM Limited * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * * Stack unwinding support for ARM * * An ARM EABI version of gcc is required to generate the unwind @@ -93,7 +80,7 @@ extern const struct unwind_idx __start_unwind_idx[]; static const struct unwind_idx *__origin_unwind_idx; extern const struct unwind_idx __stop_unwind_idx[]; -static DEFINE_SPINLOCK(unwind_lock); +static DEFINE_RAW_SPINLOCK(unwind_lock); static LIST_HEAD(unwind_tables); /* Convert a prel31 symbol to an absolute address */ @@ -201,7 +188,7 @@ static const struct unwind_idx *unwind_find_idx(unsigned long addr) /* module unwind tables */ struct unwind_table *table; - spin_lock_irqsave(&unwind_lock, flags); + raw_spin_lock_irqsave(&unwind_lock, flags); list_for_each_entry(table, &unwind_tables, list) { if (addr >= table->begin_addr && addr < table->end_addr) { @@ -213,7 +200,7 @@ static const struct unwind_idx *unwind_find_idx(unsigned long addr) break; } } - spin_unlock_irqrestore(&unwind_lock, flags); + raw_spin_unlock_irqrestore(&unwind_lock, flags); } pr_debug("%s: idx = %p\n", __func__, idx); @@ -529,9 +516,9 @@ struct unwind_table *unwind_table_add(unsigned long start, unsigned long size, tab->begin_addr = text_addr; tab->end_addr = text_addr + text_size; - spin_lock_irqsave(&unwind_lock, flags); + raw_spin_lock_irqsave(&unwind_lock, flags); list_add_tail(&tab->list, &unwind_tables); - spin_unlock_irqrestore(&unwind_lock, flags); + raw_spin_unlock_irqrestore(&unwind_lock, flags); return tab; } @@ -543,9 +530,9 @@ void unwind_table_del(struct unwind_table *tab) if (!tab) return; - spin_lock_irqsave(&unwind_lock, flags); + raw_spin_lock_irqsave(&unwind_lock, flags); list_del(&tab->list); - spin_unlock_irqrestore(&unwind_lock, flags); + raw_spin_unlock_irqrestore(&unwind_lock, flags); kfree(tab); } diff --git a/arch/arm/kernel/v7m.c b/arch/arm/kernel/v7m.c index 4d2cba94f5cc..094c5c59fc72 100644 --- a/arch/arm/kernel/v7m.c +++ b/arch/arm/kernel/v7m.c @@ -1,9 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2013 Uwe Kleine-Koenig for Pengutronix - * - * This program is free software; you can redistribute it and/or modify it under - * the terms of the GNU General Public License version 2 as published by the - * Free Software Foundation. */ #include <linux/io.h> #include <linux/reboot.h> diff --git a/arch/arm/kernel/vdso.c b/arch/arm/kernel/vdso.c index f4dd7f9663c1..8872acf9ff99 100644 --- a/arch/arm/kernel/vdso.c +++ b/arch/arm/kernel/vdso.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Adapted from arm64 version. * * Copyright (C) 2012 ARM Limited * Copyright (C) 2015 Mentor Graphics Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/cache.h> diff --git a/arch/arm/kernel/xscale-cp0.c b/arch/arm/kernel/xscale-cp0.c index 77a2eef72115..ed4f6e77616d 100644 --- a/arch/arm/kernel/xscale-cp0.c +++ b/arch/arm/kernel/xscale-cp0.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/arch/arm/kernel/xscale-cp0.c * * XScale DSP and iWMMXt coprocessor context switching and handling - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/types.h> |