mirror of https://github.com/torvalds/linux.git
28 lines
569 B
C
28 lines
569 B
C
// 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;
|
|
}
|
|
}
|