mirror of https://gitee.com/openkylin/linux.git
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/*
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* arch/sh/oprofile/init.c
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*
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* Copyright (C) 2003 - 2010 Paul Mundt
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*
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* Based on arch/mips/oprofile/common.c:
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*
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* Copyright (C) 2004, 2005 Ralf Baechle
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* Copyright (C) 2005 MIPS Technologies, Inc.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/oprofile.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/smp.h>
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#include <linux/perf_event.h>
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#include <linux/slab.h>
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#include <asm/processor.h>
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extern void sh_backtrace(struct pt_regs * const regs, unsigned int depth);
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#ifdef CONFIG_HW_PERF_EVENTS
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/*
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* This will need to be reworked when multiple PMUs are supported.
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*/
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static char *sh_pmu_op_name;
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char *op_name_from_perf_id(void)
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{
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return sh_pmu_op_name;
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}
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int __init oprofile_arch_init(struct oprofile_operations *ops)
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{
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ops->backtrace = sh_backtrace;
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if (perf_num_counters() == 0)
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return -ENODEV;
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sh_pmu_op_name = kasprintf(GFP_KERNEL, "%s/%s",
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UTS_MACHINE, perf_pmu_name());
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if (unlikely(!sh_pmu_op_name))
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return -ENOMEM;
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return oprofile_perf_init(ops);
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}
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void __exit oprofile_arch_exit(void)
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{
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oprofile_perf_exit();
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kfree(sh_pmu_op_name);
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}
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#else
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int __init oprofile_arch_init(struct oprofile_operations *ops)
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{
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ops->backtrace = sh_backtrace;
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return -ENODEV;
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}
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void __exit oprofile_arch_exit(void) {}
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#endif /* CONFIG_HW_PERF_EVENTS */
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