add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/parisc/kernel/perf.c
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@@ -1,22 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *  Parisc performance counters
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  *  Copyright (C) 2001 Randolph Chung <tausq@debian.org>
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  *
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  *  This code is derived, with permission, from HP/UX sources.
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- *
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- *    This program is free software; you can redistribute it and/or modify
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- *    it under the terms of the GNU General Public License as published by
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- *    the Free Software Foundation; either version 2, or (at your option)
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- *    any later version.
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- *
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- *    This program is distributed in the hope that it will be useful,
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- *    but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *    GNU General Public License for more details.
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- *
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- *    You should have received a copy of the GNU General Public License
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- *    along with this program; if not, write to the Free Software
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- *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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  */
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 /*
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@@ -313,7 +300,7 @@
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 	else
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 		return -EFAULT;
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-	if (!capable(CAP_SYS_ADMIN))
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+	if (!perfmon_capable())
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 		return -EACCES;
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 	if (count != sizeof(uint32_t))
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@@ -805,7 +792,7 @@
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 		return -1;
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 	}
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-	runway = ioremap_nocache(cpu_device->hpa.start, 4096);
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+	runway = ioremap(cpu_device->hpa.start, 4096);
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 	if (!runway) {
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 		pr_err("perf_write_image: ioremap failed!\n");
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 		return -ENOMEM;