linux-kernel - [PATCH v3] arm64: defconfig: Enable Ftrace and STM configs

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Message-ID: <20240924092033.2626-1-quic_jinlmao@quicinc.com>
Date: Tue, 24 Sep 2024 02:20:31 -0700
From: Mao Jinlong <quic_jinlmao@...cinc.com>
To: Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>,
        Bjorn Andersson <quic_bjorande@...cinc.com>,
        Geert Uytterhoeven
	<geert+renesas@...der.be>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Neil Armstrong
	<neil.armstrong@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        'Nícolas F . R . A . Prado'
	<nfraprado@...labora.com>
CC: Mao Jinlong <quic_jinlmao@...cinc.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v3] arm64: defconfig: Enable Ftrace and STM configs

To make software trace sources go through STM(System Trace Module),
need to enable STP (System Trace Protocol) protocols and stm sources.
Refer to Documentation/trace/stm.rst. Then software trace logs can be
captured by STM over TMC sink path. We can enable software trace(Ftrace,
console) logs along with HW trace of coresight component. The timestamp
of software trace logs and hw traces will be in sync which helps to
debug.

Changes in v3:
- update commit message.

Changes in v2:
- select ftrace config explicitly.

Signed-off-by: Mao Jinlong <quic_jinlmao@...cinc.com>
---
 arch/arm64/configs/defconfig | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 4a3999eefa67..c0a56e58e554 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -1554,6 +1554,12 @@ CONFIG_NVMEM_SNVS_LPGPR=y
 CONFIG_NVMEM_SPMI_SDAM=m
 CONFIG_NVMEM_SUNXI_SID=y
 CONFIG_NVMEM_UNIPHIER_EFUSE=y
+CONFIG_STM_PROTO_BASIC=m
+CONFIG_STM_PROTO_SYS_T=m
+CONFIG_STM_DUMMY=m
+CONFIG_STM_SOURCE_CONSOLE=m
+CONFIG_STM_SOURCE_HEARTBEAT=m
+CONFIG_STM_SOURCE_FTRACE=m
 CONFIG_FPGA=y
 CONFIG_FPGA_MGR_ALTERA_CVP=m
 CONFIG_FPGA_MGR_STRATIX10_SOC=m
@@ -1663,7 +1669,7 @@ CONFIG_DEBUG_INFO_REDUCED=y
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_DEBUG_FS=y
 # CONFIG_SCHED_DEBUG is not set
-# CONFIG_FTRACE is not set
+CONFIG_FTRACE=y
 CONFIG_CORESIGHT=m
 CONFIG_CORESIGHT_LINK_AND_SINK_TMC=m
 CONFIG_CORESIGHT_CATU=m
-- 
2.46.0