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Date: Sat, 18 Nov 2006 02:52:27 +0530 From: "Dhaval Giani" <dhaval.giani@...il.com> To: "Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>, davej@...emonkey.org.uk, paul.s.diefenbaugh@...el.com, linux@...do.de, denis.m.sadykov@...el.com Cc: linux-kernel@...r.kernel.org Subject: [BUG][acpi-cpufreq/userspace-governor]Frequency does not change 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@...alhost dhaval]# cd /sys/devices/system/cpu/cpu0/cpufreq/ [root@...alhost cpufreq]# cat * 0 1862000 1862000 1596000 1862000 1596000 ondemand userspace 1862000 acpi-cpufreq userspace 1862000 1596000 1862000 cat: stats: Is a directory [root@...alhost cpufreq]# echo 1596000 > scaling_setspeed [root@...alhost cpufreq]# cat * 0 1862000 1862000 1596000 1862000 1596000 ondemand userspace 0 acpi-cpufreq userspace 1862000 1596000 0 cat: stats: Is a directory [root@...alhost cpufreq]# cd ../../cpu1/cpufreq/ [root@...alhost cpufreq]# cat * 1 1862000 1862000 1596000 1862000 1596000 ondemand userspace 1862000 acpi-cpufreq userspace 1862000 1596000 1862000 cat: stats: Is a directory [root@...alhost cpufreq]# echo 1596000 > scaling_setspeed [root@...alhost cpufreq]# cat * 1 1596000 1862000 1596000 1862000 1596000 ondemand userspace 4294967295 acpi-cpufreq userspace 1862000 1596000 4294967295 cat: stats: Is a directory [root@...alhost cpufreq]# cd ../../cpu1/cpufreq [root@...alhost 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@...alhost 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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