* [PATCH] kvm-xfstests, gce-xfstests: improve recommended kernel config
@ 2017-05-22 17:24 Eric Biggers
2017-05-23 2:19 ` Theodore Ts'o
0 siblings, 1 reply; 4+ messages in thread
From: Eric Biggers @ 2017-05-22 17:24 UTC (permalink / raw)
To: Theodore Ts'o; +Cc: fstests, Amir Goldstein, Eric Biggers
From: Eric Biggers <ebiggers@google.com>
Trim more unneeded features from the recommended kernel config, then
enable some more relatively lightweight debugging options.
For now, just update the latest x86_64 config. But if people are okay
with these changes I'll update some of the other configs too.
Tested with both kvm-xfstests and gce-xfstests.
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
kernel-configs/x86_64-config-4.9 | 245 ++++-----------------------------------
1 file changed, 23 insertions(+), 222 deletions(-)
diff --git a/kernel-configs/x86_64-config-4.9 b/kernel-configs/x86_64-config-4.9
index ce7afbb..a814e28 100644
--- a/kernel-configs/x86_64-config-4.9
+++ b/kernel-configs/x86_64-config-4.9
@@ -1,34 +1,19 @@
CONFIG_LOCALVERSION="-xfstests"
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
-CONFIG_AUDIT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
-CONFIG_BSD_PROCESS_ACCT=y
-CONFIG_TASKSTATS=y
-CONFIG_TASK_DELAY_ACCT=y
-CONFIG_TASK_XACCT=y
-CONFIG_TASK_IO_ACCOUNTING=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_CGROUPS=y
-CONFIG_CGROUP_SCHED=y
# CONFIG_UTS_NS is not set
# CONFIG_IPC_NS is not set
# CONFIG_PID_NS is not set
# CONFIG_NET_NS is not set
-CONFIG_SYSFS_DEPRECATED=y
CONFIG_BLK_DEV_INITRD=y
-CONFIG_CC_OPTIMIZE_FOR_SIZE=y
-CONFIG_BPF_SYSCALL=y
-CONFIG_USERFAULTFD=y
# CONFIG_COMPAT_BRK is not set
CONFIG_SLAB=y
-CONFIG_PROFILING=y
CONFIG_JUMP_LABEL=y
-CONFIG_BLK_DEV_INTEGRITY=y
-CONFIG_PARTITION_ADVANCED=y
-CONFIG_BSD_DISKLABEL=y
CONFIG_SMP=y
CONFIG_X86_X2APIC=y
# CONFIG_X86_EXTENDED_PLATFORM is not set
@@ -40,172 +25,67 @@ CONFIG_MCORE2=y
CONFIG_NR_CPUS=48
# CONFIG_X86_MCE_AMD is not set
# CONFIG_MICROCODE is not set
-CONFIG_X86_MSR=y
-CONFIG_X86_CPUID=y
CONFIG_NUMA=y
# CONFIG_AMD_NUMA is not set
-CONFIG_X86_PMEM_LEGACY=y
CONFIG_X86_CHECK_BIOS_CORRUPTION=y
CONFIG_HZ_300=y
CONFIG_KEXEC=y
-CONFIG_KEXEC_FILE=y
-CONFIG_CRASH_DUMP=y
-CONFIG_PHYSICAL_ALIGN=0x1000000
-CONFIG_HOTPLUG_CPU=y
# CONFIG_SUSPEND is not set
# CONFIG_ACPI_REV_OVERRIDE_POSSIBLE is not set
# CONFIG_ACPI_TABLE_UPGRADE is not set
CONFIG_CPU_FREQ=y
-CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
-CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
-CONFIG_CPU_FREQ_GOV_ONDEMAND=y
-CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_PCI_MSI=y
-CONFIG_BINFMT_MISC=y
CONFIG_IA32_EMULATION=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_PACKET_DIAG=y
CONFIG_UNIX=y
CONFIG_UNIX_DIAG=y
-CONFIG_XFRM_USER=y
-CONFIG_NET_KEY=y
CONFIG_INET=y
-CONFIG_IP_MULTICAST=y
-CONFIG_IP_ADVANCED_ROUTER=y
-CONFIG_IP_FIB_TRIE_STATS=y
-CONFIG_IP_MULTIPLE_TABLES=y
-CONFIG_IP_ROUTE_MULTIPATH=y
-CONFIG_IP_ROUTE_VERBOSE=y
-CONFIG_NET_IPIP=y
-CONFIG_NET_IPGRE_DEMUX=y
-CONFIG_NET_IPGRE=y
-CONFIG_NET_IPGRE_BROADCAST=y
CONFIG_SYN_COOKIES=y
-CONFIG_NET_FOU=y
-CONFIG_INET_IPCOMP=y
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
CONFIG_INET_UDP_DIAG=y
-CONFIG_IPV6_ROUTER_PREF=y
# CONFIG_INET6_XFRM_MODE_TRANSPORT is not set
-CONFIG_IPV6_TUNNEL=y
-CONFIG_IPV6_MULTIPLE_TABLES=y
-CONFIG_IPV6_SUBTREES=y
-CONFIG_NETWORK_SECMARK=y
-CONFIG_VLAN_8021Q=y
-CONFIG_DNS_RESOLVER=y
+# CONFIG_INET6_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET6_XFRM_MODE_BEET is not set
CONFIG_NETLINK_DIAG=y
-CONFIG_CGROUP_NET_PRIO=y
-CONFIG_CGROUP_NET_CLASSID=y
# CONFIG_WIRELESS is not set
-CONFIG_CEPH_LIB=y
-CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
-CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
-CONFIG_CONNECTOR=y
CONFIG_MTD=y
CONFIG_MTD_BLOCK2MTD=y
CONFIG_MTD_UBI=y
CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_RAM=y
-CONFIG_BLK_DEV_RAM_SIZE=65536
CONFIG_VIRTIO_BLK=y
+CONFIG_SCSI=y
# CONFIG_SCSI_PROC_FS is not set
CONFIG_BLK_DEV_SD=y
CONFIG_SCSI_VIRTIO=y
-CONFIG_ATA=y
-# CONFIG_SATA_PMP is not set
-# CONFIG_ATA_SFF is not set
CONFIG_MD=y
-CONFIG_MD_LINEAR=y
-CONFIG_MD_RAID0=y
-CONFIG_MD_MULTIPATH=y
-CONFIG_MD_FAULTY=y
CONFIG_BLK_DEV_DM=y
-CONFIG_DM_CRYPT=y
CONFIG_DM_SNAPSHOT=y
CONFIG_DM_THIN_PROVISIONING=y
-CONFIG_DM_MIRROR=y
-CONFIG_DM_RAID=y
CONFIG_DM_ZERO=y
CONFIG_DM_FLAKEY=y
CONFIG_NETDEVICES=y
-CONFIG_DUMMY=y
-CONFIG_NETCONSOLE=y
-CONFIG_NETCONSOLE_DYNAMIC=y
-CONFIG_TUN=y
-CONFIG_VETH=y
CONFIG_VIRTIO_NET=y
-# CONFIG_NET_VENDOR_3COM is not set
-# CONFIG_NET_VENDOR_ADAPTEC is not set
-# CONFIG_NET_VENDOR_AGERE is not set
-# CONFIG_NET_VENDOR_ALTEON is not set
-# CONFIG_NET_VENDOR_AMAZON is not set
-# CONFIG_NET_VENDOR_AMD is not set
-# CONFIG_NET_VENDOR_ARC is not set
-# CONFIG_NET_VENDOR_ATHEROS is not set
-# CONFIG_NET_CADENCE is not set
-# CONFIG_NET_VENDOR_BROADCOM is not set
-# CONFIG_NET_VENDOR_BROCADE is not set
-# CONFIG_NET_VENDOR_CAVIUM is not set
-# CONFIG_NET_VENDOR_CHELSIO is not set
-# CONFIG_NET_VENDOR_CISCO is not set
-# CONFIG_NET_VENDOR_DEC is not set
-# CONFIG_NET_VENDOR_DLINK is not set
-# CONFIG_NET_VENDOR_EMULEX is not set
-# CONFIG_NET_VENDOR_EZCHIP is not set
-# CONFIG_NET_VENDOR_EXAR is not set
-# CONFIG_NET_VENDOR_HP is not set
-CONFIG_E1000=y
-CONFIG_E1000E=y
-CONFIG_IXGBEVF=y
-CONFIG_I40EVF=y
-# CONFIG_NET_VENDOR_MARVELL is not set
-# CONFIG_NET_VENDOR_MELLANOX is not set
-# CONFIG_NET_VENDOR_MICREL is not set
-# CONFIG_NET_VENDOR_MYRI is not set
-# CONFIG_NET_VENDOR_NATSEMI is not set
-# CONFIG_NET_VENDOR_NVIDIA is not set
-# CONFIG_NET_VENDOR_OKI is not set
-# CONFIG_NET_PACKET_ENGINE is not set
-# CONFIG_NET_VENDOR_QLOGIC is not set
-# CONFIG_NET_VENDOR_QUALCOMM is not set
-# CONFIG_NET_VENDOR_REALTEK is not set
-# CONFIG_NET_VENDOR_RENESAS is not set
-# CONFIG_NET_VENDOR_RDC is not set
-# CONFIG_NET_VENDOR_ROCKER is not set
-# CONFIG_NET_VENDOR_SAMSUNG is not set
-# CONFIG_NET_VENDOR_SEEQ is not set
-# CONFIG_NET_VENDOR_SILAN is not set
-# CONFIG_NET_VENDOR_SIS is not set
-# CONFIG_NET_VENDOR_SMSC is not set
-# CONFIG_NET_VENDOR_STMICRO is not set
-# CONFIG_NET_VENDOR_SUN is not set
-# CONFIG_NET_VENDOR_SYNOPSYS is not set
-# CONFIG_NET_VENDOR_TEHUTI is not set
-# CONFIG_NET_VENDOR_TI is not set
-# CONFIG_NET_VENDOR_VIA is not set
-# CONFIG_NET_VENDOR_WIZNET is not set
-CONFIG_PHYLIB=y
+# CONFIG_ETHERNET is not set
# CONFIG_WLAN is not set
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO_SERPORT is not set
-CONFIG_VT_HW_CONSOLE_BINDING=y
+# CONFIG_LEGACY_PTYS is not set
CONFIG_SERIAL_8250=y
# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_RUNTIME_UARTS=32
-CONFIG_VIRTIO_CONSOLE=y
-# CONFIG_HW_RANDOM_INTEL is not set
-# CONFIG_HW_RANDOM_AMD is not set
-# CONFIG_HW_RANDOM_VIA is not set
-CONFIG_HW_RANDOM_VIRTIO=y
+# CONFIG_HW_RANDOM is not set
# CONFIG_HWMON is not set
# CONFIG_X86_PKG_TEMP_THERMAL is not set
# CONFIG_HID is not set
# CONFIG_USB_SUPPORT is not set
-CONFIG_EDAC=y
CONFIG_RTC_CLASS=y
# CONFIG_RTC_DRV_CMOS is not set
CONFIG_VIRT_DRIVERS=y
@@ -213,7 +93,7 @@ CONFIG_VIRTIO_PCI=y
CONFIG_VIRTIO_BALLOON=y
# CONFIG_X86_PLATFORM_DEVICES is not set
# CONFIG_IOMMU_SUPPORT is not set
-CONFIG_DMI_SYSFS=y
+# CONFIG_DMIID is not set
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
@@ -222,55 +102,40 @@ CONFIG_EXT4_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
CONFIG_EXT4_ENCRYPTION=y
+CONFIG_EXT4_DEBUG=y
+CONFIG_JBD2_DEBUG=y
CONFIG_XFS_FS=y
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
CONFIG_XFS_RT=y
CONFIG_BTRFS_FS=y
+CONFIG_BTRFS_FS_POSIX_ACL=y
+CONFIG_BTRFS_DEBUG=y
+CONFIG_BTRFS_ASSERT=y
CONFIG_F2FS_FS=y
CONFIG_F2FS_FS_SECURITY=y
+CONFIG_F2FS_CHECK_FS=y
CONFIG_F2FS_FS_ENCRYPTION=y
CONFIG_FS_DAX=y
-CONFIG_FANOTIFY=y
-CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
CONFIG_QUOTA=y
CONFIG_QUOTA_NETLINK_INTERFACE=y
# CONFIG_PRINT_QUOTA_WARNING is not set
CONFIG_QFMT_V2=y
CONFIG_AUTOFS4_FS=y
-CONFIG_FUSE_FS=y
-CONFIG_CUSE=y
CONFIG_OVERLAY_FS=y
-CONFIG_FSCACHE=y
-CONFIG_FSCACHE_STATS=y
-CONFIG_CACHEFILES=y
-CONFIG_VFAT_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_CHILDREN=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
-CONFIG_CONFIGFS_FS=y
-CONFIG_ECRYPT_FS=y
-CONFIG_ECRYPT_FS_MESSAGING=y
CONFIG_UBIFS_FS=y
-CONFIG_CRAMFS=y
-CONFIG_SQUASHFS=y
-CONFIG_SQUASHFS_XATTR=y
-CONFIG_SQUASHFS_LZO=y
-CONFIG_SQUASHFS_XZ=y
-CONFIG_ROMFS_FS=y
# CONFIG_NETWORK_FILESYSTEMS is not set
CONFIG_NLS_DEFAULT="utf8"
-CONFIG_NLS_CODEPAGE_437=y
-CONFIG_NLS_CODEPAGE_850=y
CONFIG_NLS_ASCII=y
-CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_UTF8=y
-CONFIG_DLM=y
CONFIG_PRINTK_TIME=y
+CONFIG_DYNAMIC_DEBUG=y
CONFIG_DEBUG_INFO=y
-# CONFIG_ENABLE_MUST_CHECK is not set
-# CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_DEBUG_INFO_REDUCED=y
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_KERNEL=y
@@ -283,89 +148,25 @@ CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE=3000
CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF=y
CONFIG_DEBUG_STACKOVERFLOW=y
CONFIG_LOCKUP_DETECTOR=y
-# CONFIG_DETECT_HUNG_TASK is not set
CONFIG_WQ_WATCHDOG=y
CONFIG_PANIC_TIMEOUT=5
-# CONFIG_SCHED_DEBUG is not set
CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_PROVE_LOCKING=y
-CONFIG_LOCK_STAT=y
-CONFIG_DEBUG_LOCKDEP=y
-CONFIG_RCU_CPU_STALL_TIMEOUT=60
+CONFIG_DEBUG_ATOMIC_SLEEP=y
+CONFIG_DEBUG_LIST=y
+CONFIG_DEBUG_SG=y
CONFIG_RCU_EQS_DEBUG=y
CONFIG_FAULT_INJECTION=y
CONFIG_FAIL_MAKE_REQUEST=y
CONFIG_FAULT_INJECTION_DEBUG_FS=y
+CONFIG_FUNCTION_TRACER=y
CONFIG_FTRACE_SYSCALLS=y
CONFIG_TRACER_SNAPSHOT=y
-CONFIG_STACK_TRACER=y
CONFIG_BLK_DEV_IO_TRACE=y
CONFIG_FUNCTION_PROFILER=y
-CONFIG_STRICT_DEVMEM=y
-# CONFIG_DEBUG_RODATA_TEST is not set
CONFIG_DEBUG_WX=y
-# CONFIG_X86_DEBUG_FPU is not set
-CONFIG_SECURITY=y
-CONFIG_SECURITYFS=y
-CONFIG_SECURITY_NETWORK=y
-CONFIG_SECURITY_NETWORK_XFRM=y
-CONFIG_SECURITY_PATH=y
-CONFIG_SECURITY_YAMA=y
-CONFIG_CRYPTO_USER=y
# CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set
-CONFIG_CRYPTO_AUTHENC=y
-CONFIG_CRYPTO_CCM=y
-CONFIG_CRYPTO_GCM=y
-CONFIG_CRYPTO_PCBC=y
-CONFIG_CRYPTO_CMAC=y
-CONFIG_CRYPTO_XCBC=y
-CONFIG_CRYPTO_VMAC=y
CONFIG_CRYPTO_CRC32C_INTEL=y
CONFIG_CRYPTO_CRC32_PCLMUL=y
-CONFIG_CRYPTO_CRCT10DIF_PCLMUL=y
-CONFIG_CRYPTO_MD4=y
-CONFIG_CRYPTO_MICHAEL_MIC=y
-CONFIG_CRYPTO_RMD128=y
-CONFIG_CRYPTO_RMD160=y
-CONFIG_CRYPTO_RMD256=y
-CONFIG_CRYPTO_RMD320=y
-CONFIG_CRYPTO_SHA1_SSSE3=y
-CONFIG_CRYPTO_SHA256_SSSE3=y
-CONFIG_CRYPTO_SHA512_SSSE3=y
-CONFIG_CRYPTO_SHA1_MB=y
-CONFIG_CRYPTO_TGR192=y
-CONFIG_CRYPTO_WP512=y
-CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL=y
CONFIG_CRYPTO_AES_NI_INTEL=y
-CONFIG_CRYPTO_ANUBIS=y
-CONFIG_CRYPTO_ARC4=y
-CONFIG_CRYPTO_BLOWFISH=y
-CONFIG_CRYPTO_BLOWFISH_X86_64=y
-CONFIG_CRYPTO_CAMELLIA=y
-CONFIG_CRYPTO_CAMELLIA_AESNI_AVX2_X86_64=y
-CONFIG_CRYPTO_CAST5_AVX_X86_64=y
-CONFIG_CRYPTO_CAST6_AVX_X86_64=y
-CONFIG_CRYPTO_DES3_EDE_X86_64=y
-CONFIG_CRYPTO_FCRYPT=y
-CONFIG_CRYPTO_KHAZAD=y
-CONFIG_CRYPTO_SALSA20=y
-CONFIG_CRYPTO_SALSA20_X86_64=y
-CONFIG_CRYPTO_SEED=y
-CONFIG_CRYPTO_SERPENT_SSE2_X86_64=y
-CONFIG_CRYPTO_SERPENT_AVX2_X86_64=y
-CONFIG_CRYPTO_TEA=y
-CONFIG_CRYPTO_TWOFISH=y
-CONFIG_CRYPTO_TWOFISH_AVX_X86_64=y
-CONFIG_CRYPTO_LZ4=y
-CONFIG_CRYPTO_LZ4HC=y
-CONFIG_CRYPTO_ANSI_CPRNG=y
-CONFIG_CRYPTO_DRBG_HASH=y
-CONFIG_CRYPTO_DRBG_CTR=y
-CONFIG_CRYPTO_USER_API_HASH=y
-CONFIG_CRYPTO_USER_API_SKCIPHER=y
-CONFIG_ASYMMETRIC_KEY_TYPE=y
-CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y
-CONFIG_CRC_CCITT=y
-CONFIG_CRC_ITU_T=y
-CONFIG_CRC8=y
-CONFIG_CORDIC=y
+# CONFIG_CRYPTO_HW is not set
--
2.13.0.303.g4ebf302169-goog
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] kvm-xfstests, gce-xfstests: improve recommended kernel config
2017-05-22 17:24 [PATCH] kvm-xfstests, gce-xfstests: improve recommended kernel config Eric Biggers
@ 2017-05-23 2:19 ` Theodore Ts'o
2017-05-23 2:54 ` Eric Biggers
0 siblings, 1 reply; 4+ messages in thread
From: Theodore Ts'o @ 2017-05-23 2:19 UTC (permalink / raw)
To: Eric Biggers; +Cc: fstests, Amir Goldstein, Eric Biggers
On Mon, May 22, 2017 at 10:24:20AM -0700, Eric Biggers wrote:
> -CONFIG_LOCK_STAT=y
> -CONFIG_DEBUG_LOCKDEP=y
Lockdep has *definitely* found bugs for us, and so I don't think we
want to turn it off. lockstat is a interesting case. It definitely
can cause performance degredations, but it also can very find
performance problems.
I can definitely see us potentially looking for locking hotspots by
using a DAX configuration (or a /dev/ram configuration) using a
n1-highcpu-64 GCE VM. (Indeed, since Eric Whitney retired from HP,
we've lost our only "big iron" system for doing scalability testing.)
The test appliance does currently export /proc/lock_stat via the www
interface, although we're currently not saving it in the results
tar.gz file. (That's an oversight.)
So I have a slight preferene for leaving LOCK_STAT enabled, even if
we're not using most of the time. We're certainly not doing
performance benchmarks using this config, at any rate!
- Ted
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] kvm-xfstests, gce-xfstests: improve recommended kernel config
2017-05-23 2:19 ` Theodore Ts'o
@ 2017-05-23 2:54 ` Eric Biggers
2017-05-23 14:41 ` Theodore Ts'o
0 siblings, 1 reply; 4+ messages in thread
From: Eric Biggers @ 2017-05-23 2:54 UTC (permalink / raw)
To: Theodore Ts'o; +Cc: fstests, Amir Goldstein, Eric Biggers
Hi Ted,
On Mon, May 22, 2017 at 10:19:38PM -0400, Theodore Ts'o wrote:
> On Mon, May 22, 2017 at 10:24:20AM -0700, Eric Biggers wrote:
> > -CONFIG_LOCK_STAT=y
> > -CONFIG_DEBUG_LOCKDEP=y
>
> Lockdep has *definitely* found bugs for us, and so I don't think we
> want to turn it off. lockstat is a interesting case. It definitely
> can cause performance degredations, but it also can very find
> performance problems.
>
> I can definitely see us potentially looking for locking hotspots by
> using a DAX configuration (or a /dev/ram configuration) using a
> n1-highcpu-64 GCE VM. (Indeed, since Eric Whitney retired from HP,
> we've lost our only "big iron" system for doing scalability testing.)
>
> The test appliance does currently export /proc/lock_stat via the www
> interface, although we're currently not saving it in the results
> tar.gz file. (That's an oversight.)
>
> So I have a slight preferene for leaving LOCK_STAT enabled, even if
> we're not using most of the time. We're certainly not doing
> performance benchmarks using this config, at any rate!
>
DEBUG_LOCKDEP is for debugging lockdep itself, not for turning on lockdep
(that's CONFIG_PROVE_LOCKING). So I don't think it's needed.
I'm fine with leaving on LOCK_STAT; I didn't know there was interest in it.
Eric
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] kvm-xfstests, gce-xfstests: improve recommended kernel config
2017-05-23 2:54 ` Eric Biggers
@ 2017-05-23 14:41 ` Theodore Ts'o
0 siblings, 0 replies; 4+ messages in thread
From: Theodore Ts'o @ 2017-05-23 14:41 UTC (permalink / raw)
To: Eric Biggers; +Cc: fstests, Amir Goldstein, Eric Biggers
On Mon, May 22, 2017 at 07:54:37PM -0700, Eric Biggers wrote:
>
> DEBUG_LOCKDEP is for debugging lockdep itself, not for turning on lockdep
> (that's CONFIG_PROVE_LOCKING). So I don't think it's needed.
Agreed, we don't need to turn on lockdep debugging.
- Ted
> I'm fine with leaving on LOCK_STAT; I didn't know there was interest in it.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2017-05-23 14:41 UTC | newest]
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2017-05-22 17:24 [PATCH] kvm-xfstests, gce-xfstests: improve recommended kernel config Eric Biggers
2017-05-23 2:19 ` Theodore Ts'o
2017-05-23 2:54 ` Eric Biggers
2017-05-23 14:41 ` Theodore Ts'o
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