I've two 64 bit machines,both have Linux kernel running, but on one of the machines I'm not seeing any node under /sys/kernel/debug. I checked some config(CONFIG_*) in the kernel configuration file on both machines but they seem to be the same. More information below: 1: SuseX86_64:~ # uname -a Linux SuseX86_64 2.6.32.12-0.7-default #1 SMP 2010-05-20 11:14:20 +0200 x86_64 x86_64 x86_64 GNU/Linux SuseX86_64:~ # ls /sys/kernel/debug/ bdi dri dynamic_debug gpio ipoib kprobes mce sched_features slow_work usb x86 SuseX86_64:~ # grep ^CONFIG_DEBUG /boot/config-2.6.32.12-0.7-default CONFIG_DEBUG_FS=y CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_BUGVERBOSE=y CONFIG_DEBUG_INFO=y CONFIG_DEBUG_MEMORY_INIT=y CONFIG_DEBUG_BLOCK_EXT_DEVT=y CONFIG_DEBUG_FORCE_WEAK_PER_CPU=y CONFIG_DEBUG_RODATA=y SuseX86_64:~ # cat /etc/SuSE-release SUSE Linux Enterprise Server 11 (x86_64) VERSION = 11 PATCHLEVEL = 1 2: Now on a different machine, here I don't see the kernel/debug nodes under /sys FS [root@redhatx86_64]# uname -a Linux lredhatx86_64 2.6.32-71.el6.x86_64 #1 SMP Wed Sep 1 01:33:01 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux [root@redhatx86_64 ~]# cat /etc/redhat-release Red Hat Enterprise Linux Server release 6.0 (Santiago) [root@redhatx86_64 ~]# ls -l /sys/kernel/debug/ total 0 < -- ------------ ----------- [root@redhatx86_64 ]# grep ^CONFIG_DEBUG /boot/config-2.6.32-71.el6.x86_64 CONFIG_DEBUG_FS=y CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_SHIRQ=y CONFIG_DEBUG_NMI_TIMEOUT=30 CONFIG_DEBUG_BUGVERBOSE=y CONFIG_DEBUG_INFO=y CONFIG_DEBUG_MEMORY_INIT=y CONFIG_DEBUG_LIST=y CONFIG_DEBUG_FORCE_WEAK_PER_CPU=y CONFIG_DEBUG_STACKOVERFLOW=y CONFIG_DEBUG_RODATA=y CONFIG_DEBUG_RODATA_TEST=y CONFIG_DEBUG_NX_TEST=m CONFIG_DEBUG_BOOT_PARAMS=y I'm specifically interested in /sys/kernel/debug/kprobes/enabled According to kprobes.txt(http://lxr.linux.no/linux+v2.6.39/Documentation/kprobes.txt#L692) I can enable/disable kprobes infrastructure through this node. Though on both these two servers, I was successfully insert and test some modules using kprobes. Please let me know what I'm missing on server2( redhatx86_64 ) Regards, Amit -- Life is elsewhere. Cross Frontiers. Fly away. - Salman Rushdie _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
