// 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; } }