linux-kernel - [PATCH v16 01/18] tracing: Use arch_ftrace_regs() for ftrace_regs

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Message-ID: <172895572290.107311.16057631001860177198.stgit@devnote2>
Date: Tue, 15 Oct 2024 10:28:43 +0900
From: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
To: Alexei Starovoitov <alexei.starovoitov@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Florent Revest <revest@...omium.org>
Cc: linux-trace-kernel@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	bpf <bpf@...r.kernel.org>,
	Alexei Starovoitov <ast@...nel.org>,
	Jiri Olsa <jolsa@...nel.org>,
	Alan Maguire <alan.maguire@...cle.com>,
	Mark Rutland <mark.rutland@....com>,
	linux-arch@...r.kernel.org
Subject: [PATCH v16 01/18] tracing: Use arch_ftrace_regs() for ftrace_regs_*() macros

From: Masami Hiramatsu (Google) <mhiramat@...nel.org>

Since the arch_ftrace_get_regs(fregs) is only valid when the
FL_SAVE_REGS is set, we need to use `&arch_ftrace_regs()->regs` for
ftrace_regs_*() APIs because those APIs are for ftrace_regs, not
complete pt_regs.

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
---
 include/linux/ftrace_regs.h |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/linux/ftrace_regs.h b/include/linux/ftrace_regs.h
index dea6a0851b74..b78a0a60515b 100644
--- a/include/linux/ftrace_regs.h
+++ b/include/linux/ftrace_regs.h
@@ -17,17 +17,17 @@ struct __arch_ftrace_regs {
 struct ftrace_regs;
 
 #define ftrace_regs_get_instruction_pointer(fregs) \
-	instruction_pointer(arch_ftrace_get_regs(fregs))
+	instruction_pointer(&arch_ftrace_regs(fregs)->regs)
 #define ftrace_regs_get_argument(fregs, n) \
-	regs_get_kernel_argument(arch_ftrace_get_regs(fregs), n)
+	regs_get_kernel_argument(&arch_ftrace_regs(fregs)->regs, n)
 #define ftrace_regs_get_stack_pointer(fregs) \
-	kernel_stack_pointer(arch_ftrace_get_regs(fregs))
+	kernel_stack_pointer(&arch_ftrace_regs(fregs)->regs)
 #define ftrace_regs_return_value(fregs) \
-	regs_return_value(arch_ftrace_get_regs(fregs))
+	regs_return_value(&arch_ftrace_regs(fregs)->regs)
 #define ftrace_regs_set_return_value(fregs, ret) \
-	regs_set_return_value(arch_ftrace_get_regs(fregs), ret)
+	regs_set_return_value(&arch_ftrace_regs(fregs)->regs, ret)
 #define ftrace_override_function_with_return(fregs) \
-	override_function_with_return(arch_ftrace_get_regs(fregs))
+	override_function_with_return(&arch_ftrace_regs(fregs)->regs)
 #define ftrace_regs_query_register_offset(name) \
 	regs_query_register_offset(name)