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32 lines
764 B
32 lines
764 B
// 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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