diff options
Diffstat (limited to 'arch/parisc/kernel/perf.c')
| -rw-r--r-- | arch/parisc/kernel/perf.c | 34 |
1 files changed, 9 insertions, 25 deletions
diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c index 6017a5af2e6e..5e10f98ce7b5 100644 --- a/arch/parisc/kernel/perf.c +++ b/arch/parisc/kernel/perf.c @@ -1,22 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Parisc performance counters * Copyright (C) 2001 Randolph Chung <tausq@debian.org> * * This code is derived, with permission, from HP/UX sources. - * - * 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* @@ -69,8 +56,8 @@ struct rdr_tbl_ent { static int perf_processor_interface __read_mostly = UNKNOWN_INTF; static int perf_enabled __read_mostly; -static spinlock_t perf_lock; -struct parisc_device *cpu_device __read_mostly; +static DEFINE_SPINLOCK(perf_lock); +static struct parisc_device *cpu_device __read_mostly; /* RDRs to write for PCX-W */ static const int perf_rdrs_W[] = @@ -301,7 +288,7 @@ static ssize_t perf_read(struct file *file, char __user *buf, size_t cnt, loff_t static ssize_t perf_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { - size_t image_size; + size_t image_size __maybe_unused; uint32_t image_type; uint32_t interface_type; uint32_t test; @@ -313,7 +300,7 @@ static ssize_t perf_write(struct file *file, const char __user *buf, else return -EFAULT; - if (!capable(CAP_SYS_ADMIN)) + if (!perfmon_capable()) return -EACCES; if (count != sizeof(uint32_t)) @@ -479,7 +466,6 @@ static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg) } static const struct file_operations perf_fops = { - .llseek = no_llseek, .read = perf_read, .write = perf_write, .unlocked_ioctl = perf_ioctl, @@ -489,9 +475,9 @@ static const struct file_operations perf_fops = { }; static struct miscdevice perf_dev = { - MISC_DYNAMIC_MINOR, - PA_PERF_DEV, - &perf_fops + .minor = MISC_DYNAMIC_MINOR, + .name = PA_PERF_DEV, + .fops = &perf_fops, }; /* @@ -533,8 +519,6 @@ static int __init perf_init(void) /* Patch the images to match the system */ perf_patch_images(); - spin_lock_init(&perf_lock); - /* TODO: this only lets us access the first cpu.. what to do for SMP? */ cpu_device = per_cpu(cpu_data, 0).dev; printk("Performance monitoring counters enabled for %s\n", @@ -807,7 +791,7 @@ static int perf_write_image(uint64_t *memaddr) return -1; } - runway = ioremap_nocache(cpu_device->hpa.start, 4096); + runway = ioremap(cpu_device->hpa.start, 4096); if (!runway) { pr_err("perf_write_image: ioremap failed!\n"); return -ENOMEM; |