// SPDX-License-Identifier: GPL-2.0
/*
 * Performance event support for parisc
 *
 * Copyright (C) 2025 by Helge Deller <deller@gmx.de>
 */

#include <linux/kernel.h>
#include <linux/perf_event.h>
#include <asm/unwind.h>

void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry,
                           struct pt_regs *regs)
{

        struct unwind_frame_info info;

        unwind_frame_init_task(&info, current, NULL);
        while (1) {
                if (unwind_once(&info) < 0 || info.ip == 0)
                        break;

                if (!__kernel_text_address(info.ip) ||
                        perf_callchain_store(entry, info.ip))
                                return;
        }
}