RHEL 7.7: perf does not report kernel symbols
Issue
- perf does not report kernel symbols in kernel-3.10.0-1062.el7.
# uname -a
Linux localhost 3.10.0-1062.12.1.el7.x86_64 #1 SMP Thu Dec 12 06:44:49 EST 2019 x86_64 x86_64 x86_64 GNU/Linux
# perf report
Children Self Command Shared Object Symbol
+ 22.07% 0.00% swapper [unknown] [k] 0xffffffff844000d5
+ 21.06% 0.00% swapper [unknown] [k] 0xffffffff8450158a
+ 21.06% 0.00% swapper [unknown] [k] 0xffffffff84437c6e
+ 20.75% 0.00% swapper [unknown] [k] 0xffffffff849c1b5e
+ 18.71% 0.00% swapper [unknown] [k] 0xffffffff849c19f5
+ 18.07% 18.07% swapper [kernel.kallsyms] [k] intel_idle
+ 18.00% 0.00% swapper [unknown] [k] 0xffffffff84b82d94
+ 14.10% 0.00% swapper [unknown] [k] 0xffffffff8445a0b7
+ 8.68% 0.00% qemu-kvm [unknown] [.] 0xffffffff84b8dede
+ 7.97% 0.00% swapper [unknown] [k] 0xffffffff85188885
+ 7.97% 0.00% swapper [unknown] [k] 0xffffffff8518872f
+ 7.97% 0.00% swapper [unknown] [k] 0xffffffff851891cb
+ 7.97% 0.00% swapper [unknown] [k] 0xffffffff84b69b77
Environment
- Red Hat Enterprise Linux 7.7
- kernel-3.10.0-1062.el7
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