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Bug 1957210

Summary: Link perf dynamically against libbpf
Product: Red Hat Enterprise Linux 9 Reporter: Michael Petlan <mpetlan>
Component: kernelAssignee: Michael Petlan <mpetlan>
kernel sub component: Perf QA Contact: Ziqian SUN (Zamir) <zsun>
Status: CLOSED CURRENTRELEASE Docs Contact:
Severity: unspecified    
Priority: unspecified CC: acme, bsalon, hkrzesin, jolsa, xiawu
Version: 9.0Keywords: Triaged
Target Milestone: betaFlags: pm-rhel: mirror+
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: kernel-5.13.0-0.rc2.19.el9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-12-07 21:55:02 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Michael Petlan 2021-05-05 11:53:32 UTC 
Description of problem:

In RHEL-8, we had perf enabled to link dynamically to libbpf, in RHEL-9 this needs to be enabled again, since the kernel.spec.template hasn't got derived from RHEL-8.

Related bug: bz1781570

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info:
Comment 7 Ziqian SUN (Zamir) 2021-06-15 03:10:59 UTC 
Verified as FIXED with perf-5.13.0-0.rc4.33.el9. Now nm reports bpf symbols as dynamic, and libbpf is a dependency of perf in terms of RPM now.

[root@zsun-rhel9vm ~]# rpm -q perf
perf-5.13.0-0.rc4.33.el9.x86_64
[root@zsun-rhel9vm ~]# nm /usr/bin/perf
nm: /usr/bin/perf: no symbols
[root@zsun-rhel9vm ~]# nm -D /usr/bin/perf | grep -i bpf | head
                 U bpf_load_program.1
                 U bpf_map__def.1
                 U bpf_map__fd.1
                 U bpf_map_get_next_key.1
                 U bpf_map_lookup_elem.1
                 U bpf_map__name.1
                 U bpf_map__next.1
                 U bpf_map__priv.1
                 U bpf_map__set_priv.1
                 U bpf_map_update_elem.1

# dnf remove libbpf
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Dependencies resolved.
=========================================================================================================================================================================================
 Package                                     Architecture                         Version                                            Repository                                     Size
=========================================================================================================================================================================================
Removing:
 libbpf                                      x86_64                               2:0.3.0-3.el9                                      @pek2-BaseOS                                  248 k
Removing dependent packages:
 perf                                        x86_64                               5.13.0-0.rc4.33.el9                                @pek2-AppStream                                11 M
Removing unused dependencies:
 libbabeltrace                               x86_64                               1.5.8-7.el9                                        @pek2-AppStream                               519 k
 libtraceevent                               x86_64                               1.1.1-4.el9                                        @pek2-BaseOS                                  1.2 M
 perl-lib                                    x86_64                               0.65-476.el9                                       @pek2-AppStream                               9.4 k

Transaction Summary
=========================================================================================================================================================================================
Remove  5 Packages

Freed space: 13 M
Is this ok [y/N]: n
Operation aborted.