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csky: Add support for perf registers sampling

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This patch implements the perf registers sampling and validation API
for csky arch. The valid registers and their register ID are defined in
perf_regs.h. Perf tool can backtrace in userspace with unwind library
and the registers/user stack dump support.

Signed-off-by: Mao Han <han_mao@c-sky.com>
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
This commit is contained in:
Mao Han
2019-04-15 17:17:29 +08:00
committed by Guo Ren
parent 0eaf50deec
commit daac95e70f
4 changed files with 94 additions and 0 deletions
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arch/csky/include/uapi/asm/perf_regs.h
+51
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/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef _ASM_CSKY_PERF_REGS_H
#define _ASM_CSKY_PERF_REGS_H
/* Index of struct pt_regs */
enum perf_event_csky_regs {
PERF_REG_CSKY_TLS,
PERF_REG_CSKY_LR,
PERF_REG_CSKY_PC,
PERF_REG_CSKY_SR,
PERF_REG_CSKY_SP,
PERF_REG_CSKY_ORIG_A0,
PERF_REG_CSKY_A0,
PERF_REG_CSKY_A1,
PERF_REG_CSKY_A2,
PERF_REG_CSKY_A3,
PERF_REG_CSKY_REGS0,
PERF_REG_CSKY_REGS1,
PERF_REG_CSKY_REGS2,
PERF_REG_CSKY_REGS3,
PERF_REG_CSKY_REGS4,
PERF_REG_CSKY_REGS5,
PERF_REG_CSKY_REGS6,
PERF_REG_CSKY_REGS7,
PERF_REG_CSKY_REGS8,
PERF_REG_CSKY_REGS9,
#if defined(__CSKYABIV2__)
PERF_REG_CSKY_EXREGS0,
PERF_REG_CSKY_EXREGS1,
PERF_REG_CSKY_EXREGS2,
PERF_REG_CSKY_EXREGS3,
PERF_REG_CSKY_EXREGS4,
PERF_REG_CSKY_EXREGS5,
PERF_REG_CSKY_EXREGS6,
PERF_REG_CSKY_EXREGS7,
PERF_REG_CSKY_EXREGS8,
PERF_REG_CSKY_EXREGS9,
PERF_REG_CSKY_EXREGS10,
PERF_REG_CSKY_EXREGS11,
PERF_REG_CSKY_EXREGS12,
PERF_REG_CSKY_EXREGS13,
PERF_REG_CSKY_EXREGS14,
PERF_REG_CSKY_HI,
PERF_REG_CSKY_LO,
PERF_REG_CSKY_DCSR,
#endif
PERF_REG_CSKY_MAX,
};
#endif /* _ASM_CSKY_PERF_REGS_H */