diff options
Diffstat (limited to 'arch/x86/mm/mmio-mod.c')
| -rw-r--r-- | arch/x86/mm/mmio-mod.c | 49 |
1 files changed, 16 insertions, 33 deletions
diff --git a/arch/x86/mm/mmio-mod.c b/arch/x86/mm/mmio-mod.c index dc0b727742f4..c3317f0650d8 100644 --- a/arch/x86/mm/mmio-mod.c +++ b/arch/x86/mm/mmio-mod.c @@ -1,17 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* - * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * Copyright (C) IBM Corporation, 2005 * Jeff Muizelaar, 2006, 2007 @@ -22,17 +10,14 @@ #define pr_fmt(fmt) "mmiotrace: " fmt -#define DEBUG 1 - -#include <linux/module.h> +#include <linux/moduleparam.h> #include <linux/debugfs.h> #include <linux/slab.h> #include <linux/uaccess.h> #include <linux/io.h> -#include <linux/kallsyms.h> -#include <asm/pgtable.h> #include <linux/mmiotrace.h> -#include <asm/e820.h> /* for ISA_START_ADDRESS */ +#include <linux/pgtable.h> +#include <asm/e820/api.h> /* for ISA_START_ADDRESS */ #include <linux/atomic.h> #include <linux/percpu.h> #include <linux/cpu.h> @@ -123,8 +108,8 @@ static void die_kmmio_nesting_error(struct pt_regs *regs, unsigned long addr) pr_emerg("unexpected fault for address: 0x%08lx, last fault for address: 0x%08lx\n", addr, my_reason->addr); print_pte(addr); - print_symbol(KERN_EMERG "faulting IP is at %s\n", regs->ip); - print_symbol(KERN_EMERG "last faulting IP was at %s\n", my_reason->ip); + pr_emerg("faulting IP is at %pS\n", (void *)regs->ip); + pr_emerg("last faulting IP was at %pS\n", (void *)my_reason->ip); #ifdef __i386__ pr_emerg("eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n", regs->ax, regs->bx, regs->cx, regs->dx); @@ -385,21 +370,21 @@ static void enter_uniprocessor(void) int cpu; int err; - if (downed_cpus == NULL && + if (!cpumask_available(downed_cpus) && !alloc_cpumask_var(&downed_cpus, GFP_KERNEL)) { pr_notice("Failed to allocate mask\n"); goto out; } - get_online_cpus(); + cpus_read_lock(); cpumask_copy(downed_cpus, cpu_online_mask); cpumask_clear_cpu(cpumask_first(cpu_online_mask), downed_cpus); if (num_online_cpus() > 1) pr_notice("Disabling non-boot CPUs...\n"); - put_online_cpus(); + cpus_read_unlock(); for_each_cpu(cpu, downed_cpus) { - err = cpu_down(cpu); + err = remove_cpu(cpu); if (!err) pr_info("CPU%d is down.\n", cpu); else @@ -407,21 +392,19 @@ static void enter_uniprocessor(void) } out: if (num_online_cpus() > 1) - pr_warning("multiple CPUs still online, may miss events.\n"); + pr_warn("multiple CPUs still online, may miss events.\n"); } -/* __ref because leave_uniprocessor calls cpu_up which is __cpuinit, - but this whole function is ifdefed CONFIG_HOTPLUG_CPU */ -static void __ref leave_uniprocessor(void) +static void leave_uniprocessor(void) { int cpu; int err; - if (downed_cpus == NULL || cpumask_weight(downed_cpus) == 0) + if (!cpumask_available(downed_cpus) || cpumask_empty(downed_cpus)) return; pr_notice("Re-enabling CPUs...\n"); for_each_cpu(cpu, downed_cpus) { - err = cpu_up(cpu); + err = add_cpu(cpu); if (!err) pr_info("enabled CPU%d.\n", cpu); else @@ -433,8 +416,8 @@ static void __ref leave_uniprocessor(void) static void enter_uniprocessor(void) { if (num_online_cpus() > 1) - pr_warning("multiple CPUs are online, may miss events. " - "Suggest booting with maxcpus=1 kernel argument.\n"); + pr_warn("multiple CPUs are online, may miss events. " + "Suggest booting with maxcpus=1 kernel argument.\n"); } static void leave_uniprocessor(void) |