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[2/2] samples: ftrace: Add riscv support for SAMPLE_FTRACE_DIRECT[_MULTI]

Message ID 20221128101201.4144527-2-guoren@kernel.org (mailing list archive)
State Rejected
Headers show
Series [1/2] riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support | expand

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Commit Message

Guo Ren Nov. 28, 2022, 10:12 a.m. UTC 
From: Song Shuai <suagrfillet@gmail.com>

select HAVE_SAMPLE_FTRACE_DIRECT and HAVE_SAMPLE_FTRACE_DIRECT_MULTI
for ARCH_RV64I in arch/riscv/Kconfig. And add riscv asm code for
the ftrace-direct*.c files in samples/ftrace/.

Signed-off-by: Song Shuai <suagrfillet@gmail.com>
Co-developed-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Guo Ren <guoren@kernel.org>
---
Below is modified by Guo Ren:

Comments

Guo Ren Nov. 28, 2022, 10:21 a.m. UTC | #1 
On Mon, Nov 28, 2022 at 6:12 PM <guoren@kernel.org> wrote:
>
> From: Song Shuai <suagrfillet@gmail.com>
>
> select HAVE_SAMPLE_FTRACE_DIRECT and HAVE_SAMPLE_FTRACE_DIRECT_MULTI
> for ARCH_RV64I in arch/riscv/Kconfig. And add riscv asm code for
> the ftrace-direct*.c files in samples/ftrace/.
>
> Signed-off-by: Song Shuai <suagrfillet@gmail.com>
> Co-developed-by: Guo Ren <guoren@kernel.org>
> Signed-off-by: Guo Ren <guoren@kernel.org>
> ---
> Below is modified by Guo Ren:
>
> diff --git a/samples/ftrace/ftrace-direct-modify.c
> b/samples/ftrace/ftrace-direct-modify.c
> index 5582d000d803..d970b46ecc4e 100644
> --- a/samples/ftrace/ftrace-direct-modify.c
> +++ b/samples/ftrace/ftrace-direct-modify.c
> @@ -29,6 +29,7 @@ asm ("        .pushsection    .text, \"ax\",
> @progbits\n"
>  "      .globl          my_tramp1\n"
>  "   my_tramp1:\n"
>  "      addi sp,sp,-16\n"
> +"      move t0,t1\n"
>  "      sd   t0,0(sp)\n"
>  "      sd   ra,8(sp)\n"
>  "      call my_direct_func1\n"
> diff --git a/samples/ftrace/ftrace-direct-multi-modify.c
> b/samples/ftrace/ftrace-direct-multi-modify.c
> index 43e02d39c652..9534e18fa6ed 100644
> --- a/samples/ftrace/ftrace-direct-multi-modify.c
> +++ b/samples/ftrace/ftrace-direct-multi-modify.c
> @@ -28,6 +28,7 @@ asm ("        .pushsection    .text, \"ax\",
> @progbits\n"
>  "   my_tramp1:\n"
>  "       addi sp,sp,-24\n"
>  "       sd   a0,0(sp)\n"
> +"       move t0,t1\n"
>  "       sd   t0,8(sp)\n"
>  "       sd   ra,16(sp)\n"
>  "       call my_direct_func1\n"
> diff --git a/samples/ftrace/ftrace-direct-multi.c
> b/samples/ftrace/ftrace-direct-multi.c
> index df91339d3095..2111478b0463 100644
> --- a/samples/ftrace/ftrace-direct-multi.c
> +++ b/samples/ftrace/ftrace-direct-multi.c
> @@ -23,6 +23,7 @@ asm ("       .pushsection    .text, \"ax\",
> @progbits\n"
>  "   my_tramp:\n"
>  "       addi sp,sp,-24\n"
>  "       sd   a0,0(sp)\n"
> +"       move t0,t1\n"
>  "       sd   t0,8(sp)\n"
>  "       sd   ra,16(sp)\n"
>  "       call my_direct_func\n"
> diff --git a/samples/ftrace/ftrace-direct-too.c
> b/samples/ftrace/ftrace-direct-too.c
> index fe3b8c4f3336..e80981d3dc0a 100644
> --- a/samples/ftrace/ftrace-direct-too.c
> +++ b/samples/ftrace/ftrace-direct-too.c
> @@ -27,6 +27,7 @@ asm ("       .pushsection    .text, \"ax\",
> @progbits\n"
>  "       sd   a0,0(sp)\n"
>  "       sd   a1,8(sp)\n"
>  "       sd   a2,16(sp)\n"
> +"       move t0,t1\n"
>  "       sd   t0,24(sp)\n"
>  "       sd   ra,32(sp)\n"
>  "       call my_direct_func\n"
> diff --git a/samples/ftrace/ftrace-direct.c
> b/samples/ftrace/ftrace-direct.c
> index 0784024b6653..b6cae1b5cb66 100644
> --- a/samples/ftrace/ftrace-direct.c
> +++ b/samples/ftrace/ftrace-direct.c
> @@ -22,6 +22,7 @@ asm ("       .pushsection    .text, \"ax\",
> @progbits\n"
>  "   my_tramp:\n"
>  "       addi sp,sp,-24\n"
>  "       sd   a0,0(sp)\n"
> +"       move t0,t1\n"
>  "       sd   t0,8(sp)\n"
>  "       sd   ra,16(sp)\n"
>  "       call my_direct_func\n"
> ---
>  arch/riscv/Kconfig                          |  2 ++
>  samples/ftrace/ftrace-direct-modify.c       | 34 ++++++++++++++++++
>  samples/ftrace/ftrace-direct-multi-modify.c | 38 +++++++++++++++++++++
>  samples/ftrace/ftrace-direct-multi.c        | 23 +++++++++++++
>  samples/ftrace/ftrace-direct-too.c          | 27 +++++++++++++++
>  samples/ftrace/ftrace-direct.c              | 23 +++++++++++++
>  6 files changed, 147 insertions(+)
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index 2828537abfcd..0a1da03e88c2 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -279,6 +279,8 @@ config ARCH_RV64I
>         select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && MMU && $(cc-option,-fpatchable-function-entry=8)
>         select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE
>         select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
> +       select HAVE_SAMPLE_FTRACE_DIRECT
> +       select HAVE_SAMPLE_FTRACE_DIRECT_MULTI
>         select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL
>         select HAVE_FUNCTION_GRAPH_TRACER
>         select HAVE_FUNCTION_TRACER if !XIP_KERNEL && !PREEMPTION
> diff --git a/samples/ftrace/ftrace-direct-modify.c b/samples/ftrace/ftrace-direct-modify.c
> index 39146fa83e20..6a633ff4cf6d 100644
> --- a/samples/ftrace/ftrace-direct-modify.c
> +++ b/samples/ftrace/ftrace-direct-modify.c
> @@ -22,6 +22,40 @@ extern void my_tramp2(void *);
>
>  static unsigned long my_ip = (unsigned long)schedule;
>
> +#ifdef CONFIG_RISCV
> +
> +asm (" .pushsection    .text, \"ax\", @progbits\n"
> +"      .type           my_tramp1, @function\n"
> +"      .globl          my_tramp1\n"
> +"   my_tramp1:\n"
> +"      addi sp,sp,-16\n"
> +"      move t0,t1\n"
> +"      sd   t0,0(sp)\n"
> +"      sd   ra,8(sp)\n"
> +"      call my_direct_func1\n"
> +"      ld   t0,0(sp)\n"
> +"      ld   ra,8(sp)\n"
> +"      addi sp,sp,16\n"
> +"      jr t0\n"
> +"      .size           my_tramp1, .-my_tramp1\n"
> +
> +"      .type           my_tramp2, @function\n"
> +"      .globl          my_tramp2\n"
> +"   my_tramp2:\n"
> +"      addi sp,sp,-16\n"
> +"      sd   t0,0(sp)\n"
> +"      sd   ra,8(sp)\n"
> +"      call my_direct_func2\n"
> +"      ld   t0,0(sp)\n"
> +"      ld   ra,8(sp)\n"
> +"      addi sp,sp,16\n"
> +"      jr t0\n"
> +"      .size           my_tramp2, .-my_tramp2\n"
> +"      .popsection\n"
> +);
> +
> +#endif /* CONFIG_RISCV */
> +
>  #ifdef CONFIG_X86_64
>
>  #include <asm/ibt.h>
> diff --git a/samples/ftrace/ftrace-direct-multi-modify.c b/samples/ftrace/ftrace-direct-multi-modify.c
> index 65aa94d96f4e..9534e18fa6ed 100644
> --- a/samples/ftrace/ftrace-direct-multi-modify.c
> +++ b/samples/ftrace/ftrace-direct-multi-modify.c
> @@ -20,6 +20,44 @@ void my_direct_func2(unsigned long ip)
>  extern void my_tramp1(void *);
>  extern void my_tramp2(void *);
>
> +#ifdef CONFIG_RISCV
> +
> +asm (" .pushsection    .text, \"ax\", @progbits\n"
> +"      .type           my_tramp1, @function\n"
> +"      .globl          my_tramp1\n"
> +"   my_tramp1:\n"
> +"       addi sp,sp,-24\n"
> +"       sd   a0,0(sp)\n"
> +"       move t0,t1\n"
> +"       sd   t0,8(sp)\n"
> +"       sd   ra,16(sp)\n"
> +"       call my_direct_func1\n"
> +"       ld   a0,0(sp)\n"
> +"       ld   t0,8(sp)\n"
> +"       ld   ra,16(sp)\n"
> +"       addi sp,sp,24\n"
> +"      jr t0\n"
> +"      .size           my_tramp1, .-my_tramp1\n"
> +
> +"      .type           my_tramp2, @function\n"
> +"      .globl          my_tramp2\n"
> +"   my_tramp2:\n"
> +"       addi sp,sp,-24\n"
> +"       sd   a0,0(sp)\n"
Be care, and I missed one.
+"       move t0,t1\n"

> +"       sd   t0,8(sp)\n"
> +"       sd   ra,16(sp)\n"
> +"       call my_direct_func2\n"
> +"       ld   a0,0(sp)\n"
> +"       ld   t0,8(sp)\n"
> +"       ld   ra,16(sp)\n"
> +"       addi sp,sp,24\n"
> +"      jr t0\n"
> +"      .size           my_tramp2, .-my_tramp2\n"
> +"      .popsection\n"
> +);
> +
> +#endif /* CONFIG_RISCV */
> +
>  #ifdef CONFIG_X86_64
>
>  #include <asm/ibt.h>
> diff --git a/samples/ftrace/ftrace-direct-multi.c b/samples/ftrace/ftrace-direct-multi.c
> index 41ded7c615c7..2111478b0463 100644
> --- a/samples/ftrace/ftrace-direct-multi.c
> +++ b/samples/ftrace/ftrace-direct-multi.c
> @@ -15,6 +15,29 @@ void my_direct_func(unsigned long ip)
>
>  extern void my_tramp(void *);
>
> +#ifdef CONFIG_RISCV
> +
> +asm ("       .pushsection    .text, \"ax\", @progbits\n"
> +"       .type           my_tramp, @function\n"
> +"       .globl          my_tramp\n"
> +"   my_tramp:\n"
> +"       addi sp,sp,-24\n"
> +"       sd   a0,0(sp)\n"
> +"       move t0,t1\n"
> +"       sd   t0,8(sp)\n"
> +"       sd   ra,16(sp)\n"
> +"       call my_direct_func\n"
> +"       ld   a0,0(sp)\n"
> +"       ld   t0,8(sp)\n"
> +"       ld   ra,16(sp)\n"
> +"       addi sp,sp,24\n"
> +"       jr t0\n"
> +"       .size           my_tramp, .-my_tramp\n"
> +"       .popsection\n"
> +);
> +
> +#endif /* CONFIG_RISCV */
> +
>  #ifdef CONFIG_X86_64
>
>  #include <asm/ibt.h>
> diff --git a/samples/ftrace/ftrace-direct-too.c b/samples/ftrace/ftrace-direct-too.c
> index 6690468c5cc2..e80981d3dc0a 100644
> --- a/samples/ftrace/ftrace-direct-too.c
> +++ b/samples/ftrace/ftrace-direct-too.c
> @@ -17,6 +17,33 @@ void my_direct_func(struct vm_area_struct *vma,
>
>  extern void my_tramp(void *);
>
> +#ifdef CONFIG_RISCV
> +
> +asm ("       .pushsection    .text, \"ax\", @progbits\n"
> +"       .type           my_tramp, @function\n"
> +"       .globl          my_tramp\n"
> +"   my_tramp:\n"
> +"       addi sp,sp,-40\n"
> +"       sd   a0,0(sp)\n"
> +"       sd   a1,8(sp)\n"
> +"       sd   a2,16(sp)\n"
> +"       move t0,t1\n"
> +"       sd   t0,24(sp)\n"
> +"       sd   ra,32(sp)\n"
> +"       call my_direct_func\n"
> +"       ld   a0,0(sp)\n"
> +"       ld   a1,8(sp)\n"
> +"       ld   a2,16(sp)\n"
> +"       ld   t0,24(sp)\n"
> +"       ld   ra,32(sp)\n"
> +"       addi sp,sp,40\n"
> +"       jr t0\n"
> +"       .size           my_tramp, .-my_tramp\n"
> +"       .popsection\n"
> +);
> +
> +#endif /* CONFIG_RISCV */
> +
>  #ifdef CONFIG_X86_64
>
>  #include <asm/ibt.h>
> diff --git a/samples/ftrace/ftrace-direct.c b/samples/ftrace/ftrace-direct.c
> index e8f1e440b9b8..b6cae1b5cb66 100644
> --- a/samples/ftrace/ftrace-direct.c
> +++ b/samples/ftrace/ftrace-direct.c
> @@ -14,6 +14,29 @@ void my_direct_func(struct task_struct *p)
>
>  extern void my_tramp(void *);
>
> +#ifdef CONFIG_RISCV
> +
> +asm ("       .pushsection    .text, \"ax\", @progbits\n"
> +"       .type           my_tramp, @function\n"
> +"       .globl          my_tramp\n"
> +"   my_tramp:\n"
> +"       addi sp,sp,-24\n"
> +"       sd   a0,0(sp)\n"
> +"       move t0,t1\n"
> +"       sd   t0,8(sp)\n"
> +"       sd   ra,16(sp)\n"
> +"       call my_direct_func\n"
> +"       ld   a0,0(sp)\n"
> +"       ld   t0,8(sp)\n"
> +"       ld   ra,16(sp)\n"
> +"       addi sp,sp,24\n"
> +"       jr t0\n"
> +"       .size           my_tramp, .-my_tramp\n"
> +"       .popsection\n"
> +);
> +
> +#endif /* CONFIG_RISCV */
> +
>  #ifdef CONFIG_X86_64
>
>  #include <asm/ibt.h>
> --
> 2.36.1
>
Guo Ren Nov. 28, 2022, 12:55 p.m. UTC | #2 
Abandoned.

On Mon, Nov 28, 2022 at 6:12 PM <guoren@kernel.org> wrote:
>
> From: Song Shuai <suagrfillet@gmail.com>
>
> select HAVE_SAMPLE_FTRACE_DIRECT and HAVE_SAMPLE_FTRACE_DIRECT_MULTI
> for ARCH_RV64I in arch/riscv/Kconfig. And add riscv asm code for
> the ftrace-direct*.c files in samples/ftrace/.
>
> Signed-off-by: Song Shuai <suagrfillet@gmail.com>
> Co-developed-by: Guo Ren <guoren@kernel.org>
> Signed-off-by: Guo Ren <guoren@kernel.org>
> ---
> Below is modified by Guo Ren:
>
> diff --git a/samples/ftrace/ftrace-direct-modify.c
> b/samples/ftrace/ftrace-direct-modify.c
> index 5582d000d803..d970b46ecc4e 100644
> --- a/samples/ftrace/ftrace-direct-modify.c
> +++ b/samples/ftrace/ftrace-direct-modify.c
> @@ -29,6 +29,7 @@ asm ("        .pushsection    .text, \"ax\",
> @progbits\n"
>  "      .globl          my_tramp1\n"
>  "   my_tramp1:\n"
>  "      addi sp,sp,-16\n"
> +"      move t0,t1\n"
>  "      sd   t0,0(sp)\n"
>  "      sd   ra,8(sp)\n"
>  "      call my_direct_func1\n"
> diff --git a/samples/ftrace/ftrace-direct-multi-modify.c
> b/samples/ftrace/ftrace-direct-multi-modify.c
> index 43e02d39c652..9534e18fa6ed 100644
> --- a/samples/ftrace/ftrace-direct-multi-modify.c
> +++ b/samples/ftrace/ftrace-direct-multi-modify.c
> @@ -28,6 +28,7 @@ asm ("        .pushsection    .text, \"ax\",
> @progbits\n"
>  "   my_tramp1:\n"
>  "       addi sp,sp,-24\n"
>  "       sd   a0,0(sp)\n"
> +"       move t0,t1\n"
>  "       sd   t0,8(sp)\n"
>  "       sd   ra,16(sp)\n"
>  "       call my_direct_func1\n"
> diff --git a/samples/ftrace/ftrace-direct-multi.c
> b/samples/ftrace/ftrace-direct-multi.c
> index df91339d3095..2111478b0463 100644
> --- a/samples/ftrace/ftrace-direct-multi.c
> +++ b/samples/ftrace/ftrace-direct-multi.c
> @@ -23,6 +23,7 @@ asm ("       .pushsection    .text, \"ax\",
> @progbits\n"
>  "   my_tramp:\n"
>  "       addi sp,sp,-24\n"
>  "       sd   a0,0(sp)\n"
> +"       move t0,t1\n"
>  "       sd   t0,8(sp)\n"
>  "       sd   ra,16(sp)\n"
>  "       call my_direct_func\n"
> diff --git a/samples/ftrace/ftrace-direct-too.c
> b/samples/ftrace/ftrace-direct-too.c
> index fe3b8c4f3336..e80981d3dc0a 100644
> --- a/samples/ftrace/ftrace-direct-too.c
> +++ b/samples/ftrace/ftrace-direct-too.c
> @@ -27,6 +27,7 @@ asm ("       .pushsection    .text, \"ax\",
> @progbits\n"
>  "       sd   a0,0(sp)\n"
>  "       sd   a1,8(sp)\n"
>  "       sd   a2,16(sp)\n"
> +"       move t0,t1\n"
>  "       sd   t0,24(sp)\n"
>  "       sd   ra,32(sp)\n"
>  "       call my_direct_func\n"
> diff --git a/samples/ftrace/ftrace-direct.c
> b/samples/ftrace/ftrace-direct.c
> index 0784024b6653..b6cae1b5cb66 100644
> --- a/samples/ftrace/ftrace-direct.c
> +++ b/samples/ftrace/ftrace-direct.c
> @@ -22,6 +22,7 @@ asm ("       .pushsection    .text, \"ax\",
> @progbits\n"
>  "   my_tramp:\n"
>  "       addi sp,sp,-24\n"
>  "       sd   a0,0(sp)\n"
> +"       move t0,t1\n"
>  "       sd   t0,8(sp)\n"
>  "       sd   ra,16(sp)\n"
>  "       call my_direct_func\n"
> ---
>  arch/riscv/Kconfig                          |  2 ++
>  samples/ftrace/ftrace-direct-modify.c       | 34 ++++++++++++++++++
>  samples/ftrace/ftrace-direct-multi-modify.c | 38 +++++++++++++++++++++
>  samples/ftrace/ftrace-direct-multi.c        | 23 +++++++++++++
>  samples/ftrace/ftrace-direct-too.c          | 27 +++++++++++++++
>  samples/ftrace/ftrace-direct.c              | 23 +++++++++++++
>  6 files changed, 147 insertions(+)
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index 2828537abfcd..0a1da03e88c2 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -279,6 +279,8 @@ config ARCH_RV64I
>         select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && MMU && $(cc-option,-fpatchable-function-entry=8)
>         select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE
>         select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
> +       select HAVE_SAMPLE_FTRACE_DIRECT
> +       select HAVE_SAMPLE_FTRACE_DIRECT_MULTI
>         select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL
>         select HAVE_FUNCTION_GRAPH_TRACER
>         select HAVE_FUNCTION_TRACER if !XIP_KERNEL && !PREEMPTION
> diff --git a/samples/ftrace/ftrace-direct-modify.c b/samples/ftrace/ftrace-direct-modify.c
> index 39146fa83e20..6a633ff4cf6d 100644
> --- a/samples/ftrace/ftrace-direct-modify.c
> +++ b/samples/ftrace/ftrace-direct-modify.c
> @@ -22,6 +22,40 @@ extern void my_tramp2(void *);
>
>  static unsigned long my_ip = (unsigned long)schedule;
>
> +#ifdef CONFIG_RISCV
> +
> +asm (" .pushsection    .text, \"ax\", @progbits\n"
> +"      .type           my_tramp1, @function\n"
> +"      .globl          my_tramp1\n"
> +"   my_tramp1:\n"
> +"      addi sp,sp,-16\n"
> +"      move t0,t1\n"
> +"      sd   t0,0(sp)\n"
> +"      sd   ra,8(sp)\n"
> +"      call my_direct_func1\n"
> +"      ld   t0,0(sp)\n"
> +"      ld   ra,8(sp)\n"
> +"      addi sp,sp,16\n"
> +"      jr t0\n"
> +"      .size           my_tramp1, .-my_tramp1\n"
> +
> +"      .type           my_tramp2, @function\n"
> +"      .globl          my_tramp2\n"
> +"   my_tramp2:\n"
> +"      addi sp,sp,-16\n"
> +"      sd   t0,0(sp)\n"
> +"      sd   ra,8(sp)\n"
> +"      call my_direct_func2\n"
> +"      ld   t0,0(sp)\n"
> +"      ld   ra,8(sp)\n"
> +"      addi sp,sp,16\n"
> +"      jr t0\n"
> +"      .size           my_tramp2, .-my_tramp2\n"
> +"      .popsection\n"
> +);
> +
> +#endif /* CONFIG_RISCV */
> +
>  #ifdef CONFIG_X86_64
>
>  #include <asm/ibt.h>
> diff --git a/samples/ftrace/ftrace-direct-multi-modify.c b/samples/ftrace/ftrace-direct-multi-modify.c
> index 65aa94d96f4e..9534e18fa6ed 100644
> --- a/samples/ftrace/ftrace-direct-multi-modify.c
> +++ b/samples/ftrace/ftrace-direct-multi-modify.c
> @@ -20,6 +20,44 @@ void my_direct_func2(unsigned long ip)
>  extern void my_tramp1(void *);
>  extern void my_tramp2(void *);
>
> +#ifdef CONFIG_RISCV
> +
> +asm (" .pushsection    .text, \"ax\", @progbits\n"
> +"      .type           my_tramp1, @function\n"
> +"      .globl          my_tramp1\n"
> +"   my_tramp1:\n"
> +"       addi sp,sp,-24\n"
> +"       sd   a0,0(sp)\n"
> +"       move t0,t1\n"
> +"       sd   t0,8(sp)\n"
> +"       sd   ra,16(sp)\n"
> +"       call my_direct_func1\n"
> +"       ld   a0,0(sp)\n"
> +"       ld   t0,8(sp)\n"
> +"       ld   ra,16(sp)\n"
> +"       addi sp,sp,24\n"
> +"      jr t0\n"
> +"      .size           my_tramp1, .-my_tramp1\n"
> +
> +"      .type           my_tramp2, @function\n"
> +"      .globl          my_tramp2\n"
> +"   my_tramp2:\n"
> +"       addi sp,sp,-24\n"
> +"       sd   a0,0(sp)\n"
> +"       sd   t0,8(sp)\n"
> +"       sd   ra,16(sp)\n"
> +"       call my_direct_func2\n"
> +"       ld   a0,0(sp)\n"
> +"       ld   t0,8(sp)\n"
> +"       ld   ra,16(sp)\n"
> +"       addi sp,sp,24\n"
> +"      jr t0\n"
> +"      .size           my_tramp2, .-my_tramp2\n"
> +"      .popsection\n"
> +);
> +
> +#endif /* CONFIG_RISCV */
> +
>  #ifdef CONFIG_X86_64
>
>  #include <asm/ibt.h>
> diff --git a/samples/ftrace/ftrace-direct-multi.c b/samples/ftrace/ftrace-direct-multi.c
> index 41ded7c615c7..2111478b0463 100644
> --- a/samples/ftrace/ftrace-direct-multi.c
> +++ b/samples/ftrace/ftrace-direct-multi.c
> @@ -15,6 +15,29 @@ void my_direct_func(unsigned long ip)
>
>  extern void my_tramp(void *);
>
> +#ifdef CONFIG_RISCV
> +
> +asm ("       .pushsection    .text, \"ax\", @progbits\n"
> +"       .type           my_tramp, @function\n"
> +"       .globl          my_tramp\n"
> +"   my_tramp:\n"
> +"       addi sp,sp,-24\n"
> +"       sd   a0,0(sp)\n"
> +"       move t0,t1\n"
> +"       sd   t0,8(sp)\n"
> +"       sd   ra,16(sp)\n"
> +"       call my_direct_func\n"
> +"       ld   a0,0(sp)\n"
> +"       ld   t0,8(sp)\n"
> +"       ld   ra,16(sp)\n"
> +"       addi sp,sp,24\n"
> +"       jr t0\n"
> +"       .size           my_tramp, .-my_tramp\n"
> +"       .popsection\n"
> +);
> +
> +#endif /* CONFIG_RISCV */
> +
>  #ifdef CONFIG_X86_64
>
>  #include <asm/ibt.h>
> diff --git a/samples/ftrace/ftrace-direct-too.c b/samples/ftrace/ftrace-direct-too.c
> index 6690468c5cc2..e80981d3dc0a 100644
> --- a/samples/ftrace/ftrace-direct-too.c
> +++ b/samples/ftrace/ftrace-direct-too.c
> @@ -17,6 +17,33 @@ void my_direct_func(struct vm_area_struct *vma,
>
>  extern void my_tramp(void *);
>
> +#ifdef CONFIG_RISCV
> +
> +asm ("       .pushsection    .text, \"ax\", @progbits\n"
> +"       .type           my_tramp, @function\n"
> +"       .globl          my_tramp\n"
> +"   my_tramp:\n"
> +"       addi sp,sp,-40\n"
> +"       sd   a0,0(sp)\n"
> +"       sd   a1,8(sp)\n"
> +"       sd   a2,16(sp)\n"
> +"       move t0,t1\n"
> +"       sd   t0,24(sp)\n"
> +"       sd   ra,32(sp)\n"
> +"       call my_direct_func\n"
> +"       ld   a0,0(sp)\n"
> +"       ld   a1,8(sp)\n"
> +"       ld   a2,16(sp)\n"
> +"       ld   t0,24(sp)\n"
> +"       ld   ra,32(sp)\n"
> +"       addi sp,sp,40\n"
> +"       jr t0\n"
> +"       .size           my_tramp, .-my_tramp\n"
> +"       .popsection\n"
> +);
> +
> +#endif /* CONFIG_RISCV */
> +
>  #ifdef CONFIG_X86_64
>
>  #include <asm/ibt.h>
> diff --git a/samples/ftrace/ftrace-direct.c b/samples/ftrace/ftrace-direct.c
> index e8f1e440b9b8..b6cae1b5cb66 100644
> --- a/samples/ftrace/ftrace-direct.c
> +++ b/samples/ftrace/ftrace-direct.c
> @@ -14,6 +14,29 @@ void my_direct_func(struct task_struct *p)
>
>  extern void my_tramp(void *);
>
> +#ifdef CONFIG_RISCV
> +
> +asm ("       .pushsection    .text, \"ax\", @progbits\n"
> +"       .type           my_tramp, @function\n"
> +"       .globl          my_tramp\n"
> +"   my_tramp:\n"
> +"       addi sp,sp,-24\n"
> +"       sd   a0,0(sp)\n"
> +"       move t0,t1\n"
> +"       sd   t0,8(sp)\n"
> +"       sd   ra,16(sp)\n"
> +"       call my_direct_func\n"
> +"       ld   a0,0(sp)\n"
> +"       ld   t0,8(sp)\n"
> +"       ld   ra,16(sp)\n"
> +"       addi sp,sp,24\n"
> +"       jr t0\n"
> +"       .size           my_tramp, .-my_tramp\n"
> +"       .popsection\n"
> +);
> +
> +#endif /* CONFIG_RISCV */
> +
>  #ifdef CONFIG_X86_64
>
>  #include <asm/ibt.h>
> --
> 2.36.1
>


--
Best Regards
 Guo Ren
diff mbox series

Patch

diff --git a/samples/ftrace/ftrace-direct-modify.c
b/samples/ftrace/ftrace-direct-modify.c
index 5582d000d803..d970b46ecc4e 100644
--- a/samples/ftrace/ftrace-direct-modify.c
+++ b/samples/ftrace/ftrace-direct-modify.c
@@ -29,6 +29,7 @@  asm ("        .pushsection    .text, \"ax\",
@progbits\n"
 "      .globl          my_tramp1\n"
 "   my_tramp1:\n"
 "      addi sp,sp,-16\n"
+"      move t0,t1\n"
 "      sd   t0,0(sp)\n"
 "      sd   ra,8(sp)\n"
 "      call my_direct_func1\n"
diff --git a/samples/ftrace/ftrace-direct-multi-modify.c
b/samples/ftrace/ftrace-direct-multi-modify.c
index 43e02d39c652..9534e18fa6ed 100644
--- a/samples/ftrace/ftrace-direct-multi-modify.c
+++ b/samples/ftrace/ftrace-direct-multi-modify.c
@@ -28,6 +28,7 @@  asm ("        .pushsection    .text, \"ax\",
@progbits\n"
 "   my_tramp1:\n"
 "       addi sp,sp,-24\n"
 "       sd   a0,0(sp)\n"
+"       move t0,t1\n"
 "       sd   t0,8(sp)\n"
 "       sd   ra,16(sp)\n"
 "       call my_direct_func1\n"
diff --git a/samples/ftrace/ftrace-direct-multi.c
b/samples/ftrace/ftrace-direct-multi.c
index df91339d3095..2111478b0463 100644
--- a/samples/ftrace/ftrace-direct-multi.c
+++ b/samples/ftrace/ftrace-direct-multi.c
@@ -23,6 +23,7 @@  asm ("       .pushsection    .text, \"ax\",
@progbits\n"
 "   my_tramp:\n"
 "       addi sp,sp,-24\n"
 "       sd   a0,0(sp)\n"
+"       move t0,t1\n"
 "       sd   t0,8(sp)\n"
 "       sd   ra,16(sp)\n"
 "       call my_direct_func\n"
diff --git a/samples/ftrace/ftrace-direct-too.c
b/samples/ftrace/ftrace-direct-too.c
index fe3b8c4f3336..e80981d3dc0a 100644
--- a/samples/ftrace/ftrace-direct-too.c
+++ b/samples/ftrace/ftrace-direct-too.c
@@ -27,6 +27,7 @@  asm ("       .pushsection    .text, \"ax\",
@progbits\n"
 "       sd   a0,0(sp)\n"
 "       sd   a1,8(sp)\n"
 "       sd   a2,16(sp)\n"
+"       move t0,t1\n"
 "       sd   t0,24(sp)\n"
 "       sd   ra,32(sp)\n"
 "       call my_direct_func\n"
diff --git a/samples/ftrace/ftrace-direct.c
b/samples/ftrace/ftrace-direct.c
index 0784024b6653..b6cae1b5cb66 100644
--- a/samples/ftrace/ftrace-direct.c
+++ b/samples/ftrace/ftrace-direct.c
@@ -22,6 +22,7 @@  asm ("       .pushsection    .text, \"ax\",
@progbits\n"
 "   my_tramp:\n"
 "       addi sp,sp,-24\n"
 "       sd   a0,0(sp)\n"
+"       move t0,t1\n"
 "       sd   t0,8(sp)\n"
 "       sd   ra,16(sp)\n"
 "       call my_direct_func\n"
---
 arch/riscv/Kconfig                          |  2 ++
 samples/ftrace/ftrace-direct-modify.c       | 34 ++++++++++++++++++
 samples/ftrace/ftrace-direct-multi-modify.c | 38 +++++++++++++++++++++
 samples/ftrace/ftrace-direct-multi.c        | 23 +++++++++++++
 samples/ftrace/ftrace-direct-too.c          | 27 +++++++++++++++
 samples/ftrace/ftrace-direct.c              | 23 +++++++++++++
 6 files changed, 147 insertions(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 2828537abfcd..0a1da03e88c2 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -279,6 +279,8 @@  config ARCH_RV64I
 	select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && MMU && $(cc-option,-fpatchable-function-entry=8)
 	select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE
 	select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
+	select HAVE_SAMPLE_FTRACE_DIRECT
+	select HAVE_SAMPLE_FTRACE_DIRECT_MULTI
 	select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL
 	select HAVE_FUNCTION_GRAPH_TRACER
 	select HAVE_FUNCTION_TRACER if !XIP_KERNEL && !PREEMPTION
diff --git a/samples/ftrace/ftrace-direct-modify.c b/samples/ftrace/ftrace-direct-modify.c
index 39146fa83e20..6a633ff4cf6d 100644
--- a/samples/ftrace/ftrace-direct-modify.c
+++ b/samples/ftrace/ftrace-direct-modify.c
@@ -22,6 +22,40 @@  extern void my_tramp2(void *);
 
 static unsigned long my_ip = (unsigned long)schedule;
 
+#ifdef CONFIG_RISCV
+
+asm ("	.pushsection    .text, \"ax\", @progbits\n"
+"	.type		my_tramp1, @function\n"
+"	.globl		my_tramp1\n"
+"   my_tramp1:\n"
+"	addi sp,sp,-16\n"
+"	move t0,t1\n"
+"	sd   t0,0(sp)\n"
+"	sd   ra,8(sp)\n"
+"	call my_direct_func1\n"
+"	ld   t0,0(sp)\n"
+"	ld   ra,8(sp)\n"
+"	addi sp,sp,16\n"
+"	jr t0\n"
+"	.size		my_tramp1, .-my_tramp1\n"
+
+"	.type		my_tramp2, @function\n"
+"	.globl		my_tramp2\n"
+"   my_tramp2:\n"
+"	addi sp,sp,-16\n"
+"	sd   t0,0(sp)\n"
+"	sd   ra,8(sp)\n"
+"	call my_direct_func2\n"
+"	ld   t0,0(sp)\n"
+"	ld   ra,8(sp)\n"
+"	addi sp,sp,16\n"
+"	jr t0\n"
+"	.size		my_tramp2, .-my_tramp2\n"
+"	.popsection\n"
+);
+
+#endif /* CONFIG_RISCV */
+
 #ifdef CONFIG_X86_64
 
 #include <asm/ibt.h>
diff --git a/samples/ftrace/ftrace-direct-multi-modify.c b/samples/ftrace/ftrace-direct-multi-modify.c
index 65aa94d96f4e..9534e18fa6ed 100644
--- a/samples/ftrace/ftrace-direct-multi-modify.c
+++ b/samples/ftrace/ftrace-direct-multi-modify.c
@@ -20,6 +20,44 @@  void my_direct_func2(unsigned long ip)
 extern void my_tramp1(void *);
 extern void my_tramp2(void *);
 
+#ifdef CONFIG_RISCV
+
+asm ("	.pushsection    .text, \"ax\", @progbits\n"
+"	.type		my_tramp1, @function\n"
+"	.globl		my_tramp1\n"
+"   my_tramp1:\n"
+"       addi sp,sp,-24\n"
+"       sd   a0,0(sp)\n"
+"       move t0,t1\n"
+"       sd   t0,8(sp)\n"
+"       sd   ra,16(sp)\n"
+"       call my_direct_func1\n"
+"       ld   a0,0(sp)\n"
+"       ld   t0,8(sp)\n"
+"       ld   ra,16(sp)\n"
+"       addi sp,sp,24\n"
+"	jr t0\n"
+"	.size		my_tramp1, .-my_tramp1\n"
+
+"	.type		my_tramp2, @function\n"
+"	.globl		my_tramp2\n"
+"   my_tramp2:\n"
+"       addi sp,sp,-24\n"
+"       sd   a0,0(sp)\n"
+"       sd   t0,8(sp)\n"
+"       sd   ra,16(sp)\n"
+"       call my_direct_func2\n"
+"       ld   a0,0(sp)\n"
+"       ld   t0,8(sp)\n"
+"       ld   ra,16(sp)\n"
+"       addi sp,sp,24\n"
+"	jr t0\n"
+"	.size		my_tramp2, .-my_tramp2\n"
+"	.popsection\n"
+);
+
+#endif /* CONFIG_RISCV */
+
 #ifdef CONFIG_X86_64
 
 #include <asm/ibt.h>
diff --git a/samples/ftrace/ftrace-direct-multi.c b/samples/ftrace/ftrace-direct-multi.c
index 41ded7c615c7..2111478b0463 100644
--- a/samples/ftrace/ftrace-direct-multi.c
+++ b/samples/ftrace/ftrace-direct-multi.c
@@ -15,6 +15,29 @@  void my_direct_func(unsigned long ip)
 
 extern void my_tramp(void *);
 
+#ifdef CONFIG_RISCV
+
+asm ("       .pushsection    .text, \"ax\", @progbits\n"
+"       .type           my_tramp, @function\n"
+"       .globl          my_tramp\n"
+"   my_tramp:\n"
+"       addi sp,sp,-24\n"
+"       sd   a0,0(sp)\n"
+"       move t0,t1\n"
+"       sd   t0,8(sp)\n"
+"       sd   ra,16(sp)\n"
+"       call my_direct_func\n"
+"       ld   a0,0(sp)\n"
+"       ld   t0,8(sp)\n"
+"       ld   ra,16(sp)\n"
+"       addi sp,sp,24\n"
+"       jr t0\n"
+"       .size           my_tramp, .-my_tramp\n"
+"       .popsection\n"
+);
+
+#endif /* CONFIG_RISCV */
+
 #ifdef CONFIG_X86_64
 
 #include <asm/ibt.h>
diff --git a/samples/ftrace/ftrace-direct-too.c b/samples/ftrace/ftrace-direct-too.c
index 6690468c5cc2..e80981d3dc0a 100644
--- a/samples/ftrace/ftrace-direct-too.c
+++ b/samples/ftrace/ftrace-direct-too.c
@@ -17,6 +17,33 @@  void my_direct_func(struct vm_area_struct *vma,
 
 extern void my_tramp(void *);
 
+#ifdef CONFIG_RISCV
+
+asm ("       .pushsection    .text, \"ax\", @progbits\n"
+"       .type           my_tramp, @function\n"
+"       .globl          my_tramp\n"
+"   my_tramp:\n"
+"       addi sp,sp,-40\n"
+"       sd   a0,0(sp)\n"
+"       sd   a1,8(sp)\n"
+"       sd   a2,16(sp)\n"
+"       move t0,t1\n"
+"       sd   t0,24(sp)\n"
+"       sd   ra,32(sp)\n"
+"       call my_direct_func\n"
+"       ld   a0,0(sp)\n"
+"       ld   a1,8(sp)\n"
+"       ld   a2,16(sp)\n"
+"       ld   t0,24(sp)\n"
+"       ld   ra,32(sp)\n"
+"       addi sp,sp,40\n"
+"       jr t0\n"
+"       .size           my_tramp, .-my_tramp\n"
+"       .popsection\n"
+);
+
+#endif /* CONFIG_RISCV */
+
 #ifdef CONFIG_X86_64
 
 #include <asm/ibt.h>
diff --git a/samples/ftrace/ftrace-direct.c b/samples/ftrace/ftrace-direct.c
index e8f1e440b9b8..b6cae1b5cb66 100644
--- a/samples/ftrace/ftrace-direct.c
+++ b/samples/ftrace/ftrace-direct.c
@@ -14,6 +14,29 @@  void my_direct_func(struct task_struct *p)
 
 extern void my_tramp(void *);
 
+#ifdef CONFIG_RISCV
+
+asm ("       .pushsection    .text, \"ax\", @progbits\n"
+"       .type           my_tramp, @function\n"
+"       .globl          my_tramp\n"
+"   my_tramp:\n"
+"       addi sp,sp,-24\n"
+"       sd   a0,0(sp)\n"
+"       move t0,t1\n"
+"       sd   t0,8(sp)\n"
+"       sd   ra,16(sp)\n"
+"       call my_direct_func\n"
+"       ld   a0,0(sp)\n"
+"       ld   t0,8(sp)\n"
+"       ld   ra,16(sp)\n"
+"       addi sp,sp,24\n"
+"       jr t0\n"
+"       .size           my_tramp, .-my_tramp\n"
+"       .popsection\n"
+);
+
+#endif /* CONFIG_RISCV */
+
 #ifdef CONFIG_X86_64
 
 #include <asm/ibt.h>