Commit 1be2c35c authored Nov 29, 2023 by Junhao He

drivers: perf: Not enabled ARM64_BRBE by default

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8EC9K


CVE: NA

--------------------------------

The BRBE feature depend on ARMV8 PMU hardware support for branch stack
sampling. Not enabled ARM64_BRBE by default.

Signed-off-by: Junhao He <hejunhao3@huawei.com>

parent 08988fd4

arch/arm64/configs/openeuler_defconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -6169,7 +6169,7 @@ CONFIG_QCOM_L3_PMU=y
		CONFIG_THUNDERX2_PMU=m
		CONFIG_XGENE_PMU=y
		CONFIG_ARM_SPE_PMU=y
		CONFIG_ARM64_BRBE=y
		# CONFIG_ARM64_BRBE is not set
		CONFIG_HISI_PMU=m
		CONFIG_HISI_PCIE_PMU=m
		CONFIG_HNS3_PMU=m

drivers/perf/Kconfig

+0 −1

Original line number	Diff line number	Diff line
		@@ -133,7 +133,6 @@ config ARM_SPE_PMU
		config ARM64_BRBE
		bool "Enable support for Branch Record Buffer Extension (BRBE)"
		depends on PERF_EVENTS && ARM64 && ARM_PMU
		default y
		help
		Enable perf support for Branch Record Buffer Extension (BRBE) which
		records all branches taken in an execution path. This supports some