pf4.stp - Profile Kernel/User Backtraces
The pf4.stp script sets up time-based sampling. Every five seconds it
prints out a sorted list with the top twenty kernel and/or user stack
backtraces (on a per-cpu basis). Use any of --ldd, --all-modules, -d
MODULE, -d /PATH/TO/EXEC to add more symbolic info.
$ stap pf4.stp -c "sleep 5" --all-modules --ldd
--- 1 samples recorded:
1 hits on cpu 0
groups_search+0x6 [kernel]
in_group_p+0x31 [kernel]
generic_permission+0x166 [kernel]
__inode_permission+0x29 [kernel]
inode_permission+0x18 [kernel]
would_dump+0x1b [kernel]
load_elf_binary+0x7c5 [kernel]
search_binary_handler+0x93 [kernel]
do_execve_common.isra.24+0x4ea [kernel]
sys_execve+0x29 [kernel]
stub_execve+0x69 [kernel]
--- 0 samples recorded:
y~or5J ={Eeu磝Qk ᯘG{?+]ן?wM3X^歌>{7پK>on\jy R g/=fOroNVv~Y+ NGuÝHWyw[eQʨSb> >}Gmx[o[<{Ϯ_qF vM IENDB`
