From: Naveen N Rao <naveen@kernel.org>
To: <linuxppc-dev@lists.ozlabs.org>, <linux-kernel@vger.kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Florent Revest <revest@chromium.org>,
Nicholas Piggin <npiggin@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
"Aneesh Kumar K.V" <aneesh.kumar@kernel.org>,
Masami Hiramatsu <mhiramat@kernel.org>
Subject: [RFC PATCH 3/9] powerpc/ftrace: Remove nops after the call to ftrace_stub
Date: Fri, 8 Dec 2023 22:00:42 +0530 [thread overview]
Message-ID: <8ee5ec520e37d5523654bb2cd65a17512fb774e2.1702045299.git.naveen@kernel.org> (raw)
In-Reply-To: <cover.1702045299.git.naveen@kernel.org>
ftrace_stub is within the same CU, so there is no need for a subsequent
nop instruction.
Signed-off-by: Naveen N Rao <naveen@kernel.org>
---
arch/powerpc/kernel/trace/ftrace_entry.S | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/powerpc/kernel/trace/ftrace_entry.S b/arch/powerpc/kernel/trace/ftrace_entry.S
index 17d1ed3d0b40..244a1c7bb1e8 100644
--- a/arch/powerpc/kernel/trace/ftrace_entry.S
+++ b/arch/powerpc/kernel/trace/ftrace_entry.S
@@ -162,7 +162,6 @@ _GLOBAL(ftrace_regs_caller)
.globl ftrace_regs_call
ftrace_regs_call:
bl ftrace_stub
- nop
ftrace_regs_exit 1
_GLOBAL(ftrace_caller)
@@ -171,7 +170,6 @@ _GLOBAL(ftrace_caller)
.globl ftrace_call
ftrace_call:
bl ftrace_stub
- nop
ftrace_regs_exit 0
_GLOBAL(ftrace_stub)
--
2.43.0
next prev parent reply other threads:[~2023-12-08 16:37 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-08 16:30 [RFC PATCH 0/9] powerpc: ftrace updates Naveen N Rao
2023-12-08 16:30 ` [RFC PATCH 1/9] powerpc/ftrace: Fix indentation in ftrace.h Naveen N Rao
2023-12-08 16:30 ` [RFC PATCH 2/9] powerpc/ftrace: Unify 32-bit and 64-bit ftrace entry code Naveen N Rao
2023-12-08 16:30 ` Naveen N Rao [this message]
2023-12-08 16:30 ` [RFC PATCH 4/9] powerpc/Kconfig: Select FUNCTION_ALIGNMENT_4B Naveen N Rao
2023-12-08 16:30 ` [RFC PATCH 5/9] powerpc/kprobes: Use ftrace to determine if a probe is at function entry Naveen N Rao
2023-12-11 5:39 ` Masami Hiramatsu
2023-12-08 16:30 ` [RFC PATCH 6/9] powerpc/ftrace: Update and move function profile instructions out-of-line Naveen N Rao
2023-12-21 10:46 ` Christophe Leroy
2023-12-21 14:25 ` Steven Rostedt
2023-12-21 15:20 ` Christophe Leroy
2023-12-22 15:01 ` Naveen N Rao
2023-12-08 16:30 ` [RFC PATCH 7/9] powerpc/ftrace: Add support for DYNAMIC_FTRACE_WITH_CALL_OPS Naveen N Rao
2023-12-08 16:30 ` [RFC PATCH 8/9] powerpc/ftrace: Add support for DYNAMIC_FTRACE_WITH_DIRECT_CALLS Naveen N Rao
2023-12-08 16:30 ` [RFC PATCH 9/9] samples/ftrace: Add support for ftrace direct samples on powerpc Naveen N Rao
2023-12-21 10:38 ` (subset) [RFC PATCH 0/9] powerpc: ftrace updates Michael Ellerman
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