my system not display /sys/ folder

[dashang]

my objective is to configure RPS and RFS ..i upgrade latest kernel ...now i want to edit entry in /sys/class/net/eth0/queues/rx-0/rps_cpus

BUT my system is not display /sys/ folder.
in /proc/ folder sys is available but its not contain class,queues folder.

please provide me the solution...urgent

[Irithori]

Did you enable the sys fs in the pseudo filesystem section while you were configuring your custom kernel?

[dashang]

no sir i just simply run make menuconfig make , make install and go to ahead step...

please tell me how to enable pseudo filesystem ????

[Irithori]

make menuconfig should provide you with an ncurses menu, that you can use to traverse the various sections.

rps/rfs is available since 2.6.35.
What distribution and version are you running?
Fedora 15 already features 2.6.38.
(Although I would understand to use a more server orientated distribution for production purposes)

[dashang]

sir i have rhel 7.5 ...current now i have 2.6.18 kernel ...
now what i have done take one ubuntu machine and compile kernel 2.6.39.2 ..its successfully done ...and also upgrade in my rhel 7.5 machin ...that also done successfully.
when i type uname -a its display 2.6.39.2 kernel in rhel 7.5 ...
but when i try to do RFS and RPS configuration than its not showing /sys/ folder..

in earlier post you talk about pseudo file system
i have check in file .config file
only blow entry is done for pseudo filesystem

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
# CONFIG_HUGETLBFS is not set
# CONFIG_HUGETLB_PAGE is not set
CONFIG_RAMFS=y
# CONFIG_CONFIGFS_FS is not set


sir please give me solution how i enable rps for this ...and the shocking thing is this its show the RFS configuration in /proc/sys/net/core/rps_sock_flow_entries but its not display RPS configuration which is in /sys/class/net/eth0/queues/rx-0/rps_cpus....their is no folder like class , queues ,rx-0 and file rps_cpus
please help me

Thank you.

[Irithori]

There is no rh 7.5, the latest is 6.1

I can only guess, as I didnt play with it yet.
Maybe there is an option in make menuconfig to enable the export to /sys?
Maybe you compiled it as a module, and now need to modprobe this module?

[dashang]

sir i have not compile as a module because in .config file its display as 'y' not as a 'm'

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
# CONFIG_HUGETLBFS is not set
# CONFIG_HUGETLB_PAGE is not set
CONFIG_RAMFS=y
# CONFIG_CONFIGFS_FS is not set

[Irithori]

Probably some option in kernelconfig is missing/not set.
It may be worth a try to use the standard redhat kernelconfig in your new one with make oldconfig.
(and sort out the conflicts)


As I said, I can only guess from here on.
So hopefully s/o else with experience on RPS/RFS can jump in.

[dashang]

Sir Its may be problem of mounting folder....
you know any thing about /etc/fstab or any idea about mounting /sys/ folder