From: Ard Biesheuvel <ardb@kernel.org>
To: linux@armlinux.org.uk
Cc: linux-arm-kernel@lists.infradead.org,
Ard Biesheuvel <ardb@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Sudeep Holla <sudeep.holla@arm.com>,
Cristian Marussi <cristian.marussi@arm.com>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Arnd Bergmann <arnd@arndb.de>,
Linus Walleij <linus.walleij@linaro.org>,
Masami Hiramatsu <mhiramat@kernel.org>
Subject: [PATCH v2 12/12] Revert "ARM: 9144/1: forbid ftrace with clang and thumb2_kernel"
Date: Mon, 31 Jan 2022 18:03:47 +0100 [thread overview]
Message-ID: <20220131170347.381551-13-ardb@kernel.org> (raw)
In-Reply-To: <20220131170347.381551-1-ardb@kernel.org>
This reverts commit ecb108e3e3f7c692082b7c6fce41779c3835854a.
Clang + Thumb2 with ftrace is now supported.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/arm/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 3c6216f194f2..4ad7080bc17c 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -93,7 +93,7 @@ config ARM
select HAVE_FAST_GUP if ARM_LPAE
select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL
select HAVE_FUNCTION_GRAPH_TRACER
- select HAVE_FUNCTION_TRACER if !XIP_KERNEL && !(THUMB2_KERNEL && CC_IS_CLANG)
+ select HAVE_FUNCTION_TRACER if !XIP_KERNEL
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_GCC_PLUGINS
select HAVE_HW_BREAKPOINT if PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7)
--
2.30.2
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next prev parent reply other threads:[~2022-01-31 17:25 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-31 17:03 [PATCH v2 00/12] ARM: ftrace fixes and cleanups Ard Biesheuvel
2022-01-31 17:03 ` [PATCH v2 01/12] ARM: ftrace: ensure that ADR take Thumb bit into account Ard Biesheuvel
2022-01-31 17:03 ` [PATCH v2 02/12] ARM: ftrace: use ADD not POP to counter PUSH at entry Ard Biesheuvel
2022-01-31 17:03 ` [PATCH v2 03/12] ARM: ftrace: use trampolines to keep .init.text in branching range Ard Biesheuvel
2022-01-31 17:03 ` [PATCH v2 04/12] ARM: ftrace: avoid redundant loads or clobbering IP Ard Biesheuvel
2022-01-31 17:03 ` [PATCH v2 05/12] ARM: ftrace: avoid unnecessary literal loads Ard Biesheuvel
2022-01-31 17:03 ` [PATCH v2 06/12] ARM: ftrace: enable HAVE_FUNCTION_GRAPH_FP_TEST Ard Biesheuvel
2022-01-31 17:03 ` [PATCH v2 07/12] ARM: unwind: track location of LR value in stack frame Ard Biesheuvel
2022-01-31 17:03 ` [PATCH v2 08/12] ARM: ftrace: enable the graph tracer with the EABI unwinder Ard Biesheuvel
2022-01-31 17:03 ` [PATCH v2 09/12] ARM: kprobes: treat R7 as the frame pointer register in Thumb2 builds Ard Biesheuvel
2022-01-31 18:31 ` Nick Desaulniers
2022-02-01 7:42 ` Ard Biesheuvel
2022-02-01 13:18 ` Masami Hiramatsu
2022-02-01 14:05 ` Ard Biesheuvel
2022-02-02 6:10 ` Masami Hiramatsu
2022-02-02 8:00 ` Ard Biesheuvel
2022-01-31 17:03 ` [PATCH v2 10/12] drivers/firmware/scmi: disable ftrace for Clang " Ard Biesheuvel
2022-01-31 18:37 ` Nick Desaulniers
2022-02-01 8:12 ` Ard Biesheuvel
2022-01-31 22:04 ` Sudeep Holla
2022-01-31 17:03 ` [PATCH v2 11/12] ARM: cacheflush: avoid clobbering the frame pointer in Thumb2 mode Ard Biesheuvel
2022-01-31 18:40 ` Nick Desaulniers
2022-01-31 17:03 ` Ard Biesheuvel [this message]
2022-01-31 18:42 ` [PATCH v2 12/12] Revert "ARM: 9144/1: forbid ftrace with clang and thumb2_kernel" Nick Desaulniers
2022-01-31 17:21 ` [PATCH v2 00/12] ARM: ftrace fixes and cleanups Steven Rostedt
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