5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
33 lines
764 B
C
33 lines
764 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Performance event callchain support - SuperH architecture code
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*
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* Copyright (C) 2009 Paul Mundt
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*/
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/perf_event.h>
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#include <linux/percpu.h>
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#include <asm/unwinder.h>
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#include <asm/ptrace.h>
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static void callchain_address(void *data, unsigned long addr, int reliable)
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{
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struct perf_callchain_entry_ctx *entry = data;
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if (reliable)
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perf_callchain_store(entry, addr);
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}
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static const struct stacktrace_ops callchain_ops = {
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.address = callchain_address,
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};
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void
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perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs)
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{
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perf_callchain_store(entry, regs->pc);
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unwind_stack(NULL, regs, NULL, &callchain_ops, entry);
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}
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