mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-01-16 09:56:41 +07:00
b4bf274198
In trace events as tracepoints context are not able to be retrieve with task_pt_regs. Without arch caller regs support the pt_regs context will be all zero, perf can not parsing the callchain and resolving the symbols correctly, some time will even get into deadlock while handling the page fault, eg: perf kmem —page record ls Changelog - Add test case cmd in comment - Use regs_fp(regs) which is defined in abi/regdef.h Signed-off-by: Mao Han <han_mao@c-sky.com> Signed-off-by: Guo Ren <guoren@kernel.org>
28 lines
601 B
C
28 lines
601 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
|
|
|
|
#ifndef __ASM_CSKY_REGDEF_H
|
|
#define __ASM_CSKY_REGDEF_H
|
|
|
|
#define syscallid r7
|
|
#define regs_syscallid(regs) regs->regs[3]
|
|
#define regs_fp(regs) regs->regs[4]
|
|
|
|
/*
|
|
* PSR format:
|
|
* | 31 | 30-24 | 23-16 | 15 14 | 13-10 | 9 | 8-0 |
|
|
* S VEC TM MM
|
|
*
|
|
* S: Super Mode
|
|
* VEC: Exception Number
|
|
* TM: Trace Mode
|
|
* MM: Memory unaligned addr access
|
|
*/
|
|
#define DEFAULT_PSR_VALUE 0x80000200
|
|
|
|
#define SYSTRACE_SAVENUM 5
|
|
|
|
#define TRAP0_SIZE 4
|
|
|
|
#endif /* __ASM_CSKY_REGDEF_H */
|