Staging
v0.8.1
v0.8.1
swh:1:snp:a902887e4be9191b7c6c4406aa06b31c1ce2c7cc
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- v3.9-rc8
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- v3.19-rc1
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- v3.18-rc7
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- v3.16-rc1
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- v3.14-rc8
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- v3.10
- v3.1-rc9
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- v3.0-rc1
- v3.0
- v2.6.39-rc7
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- v2.6.38-rc1
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- v2.6.32
- v2.6.31-rc9
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- v2.6.31-rc1
- v2.6.31
- v2.6.30-rc8
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- v2.6.30-rc1
- v2.6.30
- v2.6.29-rc8
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- v2.6.29-rc1
- v2.6.29
- v2.6.28-rc9
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- v2.6.28-rc1
- v2.6.28
- v2.6.27-rc9
- v2.6.27-rc8
- v2.6.27-rc7
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- v2.6.27-rc1
- v2.6.27
- v2.6.26-rc9
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- v2.6.26-rc1
- v2.6.26
- v2.6.25-rc9
- v2.6.25-rc8
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- v2.6.25-rc1
- v2.6.25
- v2.6.24-rc8
- v2.6.24-rc7
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- v2.6.24-rc3
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- v2.6.24-rc1
- v2.6.24
- v2.6.23-rc9
- v2.6.23-rc8
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- v2.6.23-rc1
- v2.6.23
- v2.6.22-rc7
- v2.6.22-rc6
- v2.6.22-rc5
- v2.6.22-rc4
- v2.6.22-rc3
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- v2.6.22-rc1
- v2.6.22
- v2.6.21-rc7
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- v2.6.21-rc1
- v2.6.21
- v2.6.20-rc7
- v2.6.20-rc6
- v2.6.20-rc5
- v2.6.20-rc4
- v2.6.20-rc3
- v2.6.20-rc2
- v2.6.20-rc1
- v2.6.20
- v2.6.19-rc6
- v2.6.19-rc5
- v2.6.19-rc4
- v2.6.19-rc3
- v2.6.19-rc2
- v2.6.19-rc1
- v2.6.19
- v2.6.18-rc7
- v2.6.18-rc6
- v2.6.18-rc5
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- v2.6.18-rc1
- v2.6.18
- v2.6.17-rc6
- v2.6.17-rc5
- v2.6.17-rc4
- v2.6.17-rc3
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- v2.6.17-rc1
- v2.6.17
- v2.6.16-rc6
- v2.6.16-rc5
- v2.6.16-rc4
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- v2.6.16-rc1
- v2.6.16
- v2.6.15-rc7
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- v2.6.15-rc1
- v2.6.15
- v2.6.14-rc5
- v2.6.14-rc4
- v2.6.14-rc3
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Tip revision: 089cf7f6ecb266b6a4164919a2e69bd2f938374a authored by Linus Torvalds on 02 September 2019, 16:57:40 UTC
Linux 5.3-rc7
Linux 5.3-rc7
Tip revision: 089cf7f
ftrace.h
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2017 Andes Technology Corporation */
/*
* The graph frame test is not possible if CONFIG_FRAME_POINTER is not enabled.
* Check arch/riscv/kernel/mcount.S for detail.
*/
#if defined(CONFIG_FUNCTION_GRAPH_TRACER) && defined(CONFIG_FRAME_POINTER)
#define HAVE_FUNCTION_GRAPH_FP_TEST
#endif
#define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
#define ARCH_SUPPORTS_FTRACE_OPS 1
#ifndef __ASSEMBLY__
void _mcount(void);
static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
return addr;
}
struct dyn_arch_ftrace {
};
#endif
#ifdef CONFIG_DYNAMIC_FTRACE
/*
* A general call in RISC-V is a pair of insts:
* 1) auipc: setting high-20 pc-related bits to ra register
* 2) jalr: setting low-12 offset to ra, jump to ra, and set ra to
* return address (original pc + 4)
*
* Dynamic ftrace generates probes to call sites, so we must deal with
* both auipc and jalr at the same time.
*/
#define MCOUNT_ADDR ((unsigned long)_mcount)
#define JALR_SIGN_MASK (0x00000800)
#define JALR_OFFSET_MASK (0x00000fff)
#define AUIPC_OFFSET_MASK (0xfffff000)
#define AUIPC_PAD (0x00001000)
#define JALR_SHIFT 20
#define JALR_BASIC (0x000080e7)
#define AUIPC_BASIC (0x00000097)
#define NOP4 (0x00000013)
#define make_call(caller, callee, call) \
do { \
call[0] = to_auipc_insn((unsigned int)((unsigned long)callee - \
(unsigned long)caller)); \
call[1] = to_jalr_insn((unsigned int)((unsigned long)callee - \
(unsigned long)caller)); \
} while (0)
#define to_jalr_insn(offset) \
(((offset & JALR_OFFSET_MASK) << JALR_SHIFT) | JALR_BASIC)
#define to_auipc_insn(offset) \
((offset & JALR_SIGN_MASK) ? \
(((offset & AUIPC_OFFSET_MASK) + AUIPC_PAD) | AUIPC_BASIC) : \
((offset & AUIPC_OFFSET_MASK) | AUIPC_BASIC))
/*
* Let auipc+jalr be the basic *mcount unit*, so we make it 8 bytes here.
*/
#define MCOUNT_INSN_SIZE 8
#endif