linux-kernel - [lkp] [ACPI] 73a092e801: cannot_create/sys/devices/system/cpu/cpu*/cpufreq/scaling_governor:Directory

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Message-ID: <87r3lxg3ep.fsf@yhuang-dev.intel.com>
Date:	Thu, 17 Sep 2015 10:55:58 +0800
From:	kernel test robot <ying.huang@...el.com>
TO:	Sudeep Holla <sudeep.holla@....com>
CC:	LKML <linux-kernel@...r.kernel.org>
Subject: [lkp] [ACPI] 73a092e801: cannot_create/sys/devices/system/cpu/cpu*/cpufreq/scaling_governor:Directory_nonexistent

FYI, we noticed the below changes on

git://linux-arm.org/linux-skn acpi_lpi
commit 73a092e801e9938496b71acc9434fb33a9d65d34 ("ACPI: tables: simplify acpi_parse_entries")

=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler/cpufreq_governor/ip/runtime/nr_threads/cluster/test:
  lkp-nex04/netperf/debian-x86_64-2015-02-07.cgz/x86_64-rhel/gcc-4.9/performance/ipv4/300s/200%/cs-localhost/UDP_RR

commit: 
  34f6273d2bb1ddd7da4f9fe4babc78b0a60ad71f
  73a092e801e9938496b71acc9434fb33a9d65d34

34f6273d2bb1ddd7 73a092e801e9938496b71acc94 
---------------- -------------------------- 
       fail:runs  %reproduction    fail:runs
           |             |             |    
           :10         100%          10:10    stderr./lkp/lkp/src/setup/cpufreq_governor:#:/lkp/lkp/src/setup/cpufreq_governor:cannot_create/sys/devices/system/cpu/cpu*/cpufreq/scaling_governor:Directory_nonexistent
           :10         100%          10:10    last_state.cpufreq_governor.exit_code.2
           :10         100%          10:10    last_state.exit_fail
           :10         100%          10:10    last_state.is_incomplete_run


lkp-nex04: Nehalem-EX
Memory: 256G


In short, the cpufrequ_governor sysfs interface is not available after
your commit.  Caused ACPI cpufreq driver to stop working?

To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml


Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.


Thanks,
Ying Huang

View attachment "job.yaml" of type "text/plain" (3587 bytes)

View attachment "reproduce" of type "text/plain" (74 bytes)