From: "Dhaval Giani" <dhaval.giani@gmail.com>
To: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>,
davej@codemonkey.org.uk, paul.s.diefenbaugh@intel.com,
linux@brodo.de, denis.m.sadykov@intel.com
Cc: linux-kernel@vger.kernel.org
Subject: [BUG][acpi-cpufreq/userspace-governor]Frequency does not change
Date: Sat, 18 Nov 2006 02:52:27 +0530 [thread overview]
Message-ID: <8aa016e10611171322h2f736d3fo413ec81298f6a8a2@mail.gmail.com> (raw)
Hey there,
Looks like I spoke too soon. I tried changing the frequency in cpu1
and then it all fell apart. I got a ridiculously high value. To test
it, I rebooted my system, and this is what happened.
[root@localhost dhaval]# cd /sys/devices/system/cpu/cpu0/cpufreq/
[root@localhost cpufreq]# cat *
0
1862000
1862000
1596000
1862000 1596000
ondemand userspace
1862000
acpi-cpufreq
userspace
1862000
1596000
1862000
cat: stats: Is a directory
[root@localhost cpufreq]# echo 1596000 > scaling_setspeed
[root@localhost cpufreq]# cat *
0
1862000
1862000
1596000
1862000 1596000
ondemand userspace
0
acpi-cpufreq
userspace
1862000
1596000
0
cat: stats: Is a directory
[root@localhost cpufreq]# cd ../../cpu1/cpufreq/
[root@localhost cpufreq]# cat *
1
1862000
1862000
1596000
1862000 1596000
ondemand userspace
1862000
acpi-cpufreq
userspace
1862000
1596000
1862000
cat: stats: Is a directory
[root@localhost cpufreq]# echo 1596000 > scaling_setspeed
[root@localhost cpufreq]# cat *
1
1596000
1862000
1596000
1862000 1596000
ondemand userspace
4294967295
acpi-cpufreq
userspace
1862000
1596000
4294967295
cat: stats: Is a directory
[root@localhost cpufreq]# cd ../../cpu1/cpufreq
[root@localhost cpufreq]# cat *
1
1596000
1862000
1596000
1862000 1596000
ondemand userspace
4294967295
acpi-cpufreq
userspace
1862000
1596000
4294967295
cat: stats: Is a directory
The dmesg is as follows,
acpi-cpufreq: get_cur_freq_on_cpu (0)
acpi-cpufreq: get_cur_val = 100665128
acpi-cpufreq: cur freq = 1862000
userspace: cpufreq_set for cpu 0, freq 1596000 kHz
cpufreq-core: target for CPU 0: 1596000 kHz, relation 0
acpi-cpufreq: acpi_cpufreq_target 1596000 (0)
freq-table: request for target 1596000 kHz (relation: 0) for cpu 0
freq-table: target is 1 (1596000 kHz, 9)
cpufreq-core: notification 0 of frequency transition to 0 kHz
userspace: saving cpu_cur_freq of cpu 0 to be 0 kHz
cpufreq-core: notification 1 of frequency transition to 0 kHz
userspace: saving cpu_cur_freq of cpu 0 to be 0 kHz
acpi-cpufreq: get_cur_freq_on_cpu (0)
printk: 2 messages suppressed.
acpi-cpufreq: get_cur_freq_on_cpu (1)
acpi-cpufreq: get_cur_val = 100665128
acpi-cpufreq: cur freq = 1862000
userspace: cpufreq_set for cpu 1, freq 1596000 kHz
cpufreq-core: target for CPU 1: 1596000 kHz, relation 0
acpi-cpufreq: acpi_cpufreq_target 1596000 (1)
freq-table: request for target 1596000 kHz (relation: 0) for cpu 1
freq-table: target is 1 (1596000 kHz, 9)
cpufreq-core: notification 0 of frequency transition to 4294967295 kHz
printk: 6 messages suppressed.
acpi-cpufreq: get_cur_freq_on_cpu (0)
acpi-cpufreq: get_cur_val = 100664859
acpi-cpufreq: cur freq = 1596000
acpi-cpufreq: get_cur_freq_on_cpu (1)
acpi-cpufreq: get_cur_val = 100664859
acpi-cpufreq: cur freq = 1596000
[root@localhost cpufreq]#
This is on the 2.6.19-rc5-mm2 with the patch at
http://lkml.org/lkml/2006/11/15/302 applied.
Thanks and regards
Dhaval Giani
next reply other threads:[~2006-11-17 21:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-17 21:22 Dhaval Giani [this message]
2006-11-17 22:25 ` Dhaval Giani
2006-11-18 22:16 ` [PATCH] Bug fix for acpi-cpufreq and cpufreq_stats oops on frequency change notification Venkatesh Pallipadi
2006-11-17 23:19 [BUG][acpi-cpufreq/userspace-governor]Frequency does not change Pallipadi, Venkatesh
2006-11-17 23:48 ` Dhaval Giani
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