From 598c01b5b2fca3a9de8ad3400edbff98ec22f0b2 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Wed, 20 May 2020 22:12:57 +1000 Subject: [PATCH] powerpc/configs/64s: Enable CONFIG_PRINTK_CALLER This adds the CPU or thread number to printk messages. This helps a lot when deciphering concurrent oopses that have been interleaved. Example output, of PID1 (T1) triggering a warning: [ 1.581678][ T1] WARNING: CPU: 0 PID: 1 at crypto/rsa-pkcs1pad.c:539 pkcs1pad_verify+0x38/0x140 [ 1.581681][ T1] Modules linked in: [ 1.581693][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.5.0-rc5-gcc-8.2.0-00121-gf84c2e595927-dirty #1515 [ 1.581700][ T1] NIP: c000000000207d64 LR: c000000000207d3c CTR: c000000000207d2c [ 1.581708][ T1] REGS: c0000000fd2e7560 TRAP: 0700 Not tainted (5.5.0-rc5-gcc-8.2.0-00121-gf84c2e595927-dirty) [ 1.581712][ T1] MSR: 9000000000029033 CR: 44000222 XER: 00040000 Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200520121257.961112-1-mpe@ellerman.id.au --- arch/powerpc/configs/powernv_defconfig | 1 + arch/powerpc/configs/ppc64_defconfig | 1 + arch/powerpc/configs/pseries_defconfig | 1 + 3 files changed, 3 insertions(+) diff --git a/arch/powerpc/configs/powernv_defconfig b/arch/powerpc/configs/powernv_defconfig index df8bdbaa5d8f..2de9aadf0f50 100644 --- a/arch/powerpc/configs/powernv_defconfig +++ b/arch/powerpc/configs/powernv_defconfig @@ -347,3 +347,4 @@ CONFIG_KVM_BOOK3S_64=m CONFIG_KVM_BOOK3S_64_HV=m CONFIG_VHOST_NET=m CONFIG_PRINTK_TIME=y +CONFIG_PRINTK_CALLER=y diff --git a/arch/powerpc/configs/ppc64_defconfig b/arch/powerpc/configs/ppc64_defconfig index bae8170d7401..57142a648ebd 100644 --- a/arch/powerpc/configs/ppc64_defconfig +++ b/arch/powerpc/configs/ppc64_defconfig @@ -358,6 +358,7 @@ CONFIG_CRYPTO_DEV_NX=y CONFIG_CRYPTO_DEV_NX_ENCRYPT=m CONFIG_CRYPTO_DEV_VMX=y CONFIG_PRINTK_TIME=y +CONFIG_PRINTK_CALLER=y CONFIG_MAGIC_SYSRQ=y CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_STACK_USAGE=y diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig index 0bea4d3ffb85..dfa4a726333b 100644 --- a/arch/powerpc/configs/pseries_defconfig +++ b/arch/powerpc/configs/pseries_defconfig @@ -322,3 +322,4 @@ CONFIG_KVM_BOOK3S_64=m CONFIG_KVM_BOOK3S_64_HV=m CONFIG_VHOST_NET=m CONFIG_PRINTK_TIME=y +CONFIG_PRINTK_CALLER=y