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From: guoren@kernel.org
To: anup@brainfault.org, paul.walmsley@sifive.com,
	palmer@dabbelt.com, conor.dooley@microchip.com, heiko@sntech.de,
	rostedt@goodmis.org, mhiramat@kernel.org, jolsa@redhat.com,
	bp@suse.de, jpoimboe@kernel.org, suagrfillet@gmail.com,
	andy.chiu@sifive.com, e.shatokhin@yadro.com, guoren@kernel.org
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH -next V6 7/7] samples: ftrace: Add riscv support for SAMPLE_FTRACE_DIRECT[_MULTI]
Date: Sat,  7 Jan 2023 08:35:49 -0500	[thread overview]
Message-ID: <20230107133549.4192639-8-guoren@kernel.org> (raw)
In-Reply-To: <20230107133549.4192639-1-guoren@kernel.org>

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>
Tested-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Guo Ren <guoren@kernel.org>
---
 samples/ftrace/ftrace-direct-modify.c       | 33 ++++++++++++++++++
 samples/ftrace/ftrace-direct-multi-modify.c | 37 +++++++++++++++++++++
 samples/ftrace/ftrace-direct-multi.c        | 22 ++++++++++++
 samples/ftrace/ftrace-direct-too.c          | 26 +++++++++++++++
 samples/ftrace/ftrace-direct.c              | 22 ++++++++++++
 5 files changed, 140 insertions(+)

diff --git a/samples/ftrace/ftrace-direct-modify.c b/samples/ftrace/ftrace-direct-modify.c
index de5a0f67f320..be7bf472c3c7 100644
--- a/samples/ftrace/ftrace-direct-modify.c
+++ b/samples/ftrace/ftrace-direct-modify.c
@@ -23,6 +23,39 @@ 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"
+"	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 d52370cad0b6..10884bf418f7 100644
--- a/samples/ftrace/ftrace-direct-multi-modify.c
+++ b/samples/ftrace/ftrace-direct-multi-modify.c
@@ -21,6 +21,43 @@ 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"
+"       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 ec1088922517..a35bf43bf6d7 100644
--- a/samples/ftrace/ftrace-direct-multi.c
+++ b/samples/ftrace/ftrace-direct-multi.c
@@ -16,6 +16,28 @@ 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"
+"       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 e13fb59a2b47..3b62e33c2e6d 100644
--- a/samples/ftrace/ftrace-direct-too.c
+++ b/samples/ftrace/ftrace-direct-too.c
@@ -18,6 +18,32 @@ 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"
+"       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 1f769d0db20f..2cfe5a7d2d70 100644
--- a/samples/ftrace/ftrace-direct.c
+++ b/samples/ftrace/ftrace-direct.c
@@ -15,6 +15,28 @@ 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"
+"       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


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  parent reply	other threads:[~2023-01-07 13:36 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-07 13:35 [PATCH -next V6 0/7] riscv: Optimize function trace guoren
2023-01-07 13:35 ` [PATCH -next V6 1/7] riscv: ftrace: Fixup panic by disabling preemption guoren
2023-01-09 17:19   ` Mark Rutland
2023-01-11 13:22     ` Guo Ren
2023-01-12 12:05       ` Mark Rutland
2023-01-28 10:00         ` Guo Ren
2023-01-29  5:36           ` Guo Ren
2023-01-30 11:17           ` Mark Rutland
2023-02-07  2:31             ` Guo Ren
2023-01-07 13:35 ` [PATCH -next V6 2/7] riscv: ftrace: Remove wasted nops for !RISCV_ISA_C guoren
2023-01-07 13:35 ` [PATCH -next V6 3/7] riscv: ftrace: Reduce the detour code size to half guoren
2023-01-10 17:13   ` Evgenii Shatokhin
2023-01-11  9:58     ` Guo Ren
2023-01-07 13:35 ` [PATCH -next V6 4/7] riscv: ftrace: Add ftrace_graph_func guoren
2023-01-07 13:35 ` [PATCH -next V6 5/7] riscv: ftrace: Make ftrace_caller call ftrace_graph_func guoren
2023-01-10 17:16   ` Evgenii Shatokhin
2023-01-11  8:23     ` Guo Ren
2023-01-11  8:41       ` Guo Ren
2023-01-07 13:35 ` [PATCH -next V6 6/7] riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support guoren
2023-01-07 13:35 ` guoren [this message]
2023-01-10 13:08   ` [PATCH -next V6 7/7] samples: ftrace: Add riscv support for SAMPLE_FTRACE_DIRECT[_MULTI] Evgenii Shatokhin
2023-01-10 13:50   ` Evgenii Shatokhin
2023-01-11  9:50   ` Song Shuai
2023-01-11  9:59     ` Guo Ren
2023-01-13 10:48     ` Song Shuai
2023-01-17  3:20       ` Guo Ren
2023-01-11 10:11 ` [PATCH -next V6 0/7] riscv: Optimize function trace Song Shuai
2023-01-11 14:03   ` Guo Ren

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