[PATCH 2/2] ARM: bcm2835_defconfig: Enable SMP support

Jonathan Neuschäfer j.neuschaefer at gmx.net
Sun Jul 7 14:48:45 PDT 2024


Since there is only one Raspberry Pi related defconfig in the mainline
kernel, it's useful to have to work well on all 32-bit Raspberry Pis.
To that end, this patch enables CONFIG_SMP and CONFIG_SMP_ON_UP, which
allows the kernel to run well on multi- and single-CPU systems.

PM and suspend support is necessary in order to keep KEXEC enabled.

Tested on:
- Raspberry Pi 2 Model B V1.1 (BCM2836, SMP)
- Raspberry Pi Model B (BCM2835, UP)

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer at gmx.net>
---
 arch/arm/configs/bcm2835_defconfig | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/configs/bcm2835_defconfig b/arch/arm/configs/bcm2835_defconfig
index da49dcfd359050..d505058715b66f 100644
--- a/arch/arm/configs/bcm2835_defconfig
+++ b/arch/arm/configs/bcm2835_defconfig
@@ -24,6 +24,7 @@ CONFIG_KEXEC=y
 CONFIG_ARCH_MULTI_V6=y
 CONFIG_ARCH_BCM=y
 CONFIG_ARCH_BCM2835=y
+CONFIG_SMP=y
 CONFIG_CPU_FREQ=y
 CONFIG_CPU_FREQ_STAT=y
 CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE=y
@@ -33,8 +34,6 @@ CONFIG_CPU_FREQ_GOV_ONDEMAND=y
 CONFIG_CPUFREQ_DT=y
 CONFIG_ARM_RASPBERRYPI_CPUFREQ=y
 CONFIG_VFP=y
-# CONFIG_SUSPEND is not set
-CONFIG_PM=y
 CONFIG_JUMP_LABEL=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
@@ -175,6 +174,7 @@ CONFIG_DEBUG_FS=y
 CONFIG_KGDB=y
 CONFIG_KGDB_KDB=y
 CONFIG_DEBUG_MEMORY_INIT=y
+# CONFIG_RCU_TRACE is not set
 CONFIG_FUNCTION_PROFILER=y
 CONFIG_STACK_TRACER=y
 CONFIG_SCHED_TRACER=y

--
2.43.0




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