search for: cpufreq_ondemand

Another bundle of issues from Coverity triage. The first one is in x86/mm, and looks scarier than it is. The others are all in xen/drivers and AFAICT are pretty minor. Cheers, Tim.

One problem I've discovered in cpuspeed is that there are drivers missing: # cd /lib/modules/2.6.18-194.8.1.el5/kernel/drivers/cpufreq # ll total 72 -rwxr--r-- 1 root root 14408 Jul 1 21:40 cpufreq_conservative.ko -rwxr--r-- 1 root root 16168 Jul 1 21:40 cpufreq_ondemand.ko -rwxr--r-- 1 root root 7624 Jul 1 21:40 cpufreq_powersave.ko -rwxr--r-- 1 root root 12524 Jul 1 21:40 cpufreq_stats.ko Or is this what everyone has? # uname -rmops Linux 2.6.18-194.8.1.el5 i686 i686 GNU/Linux -- Find research and analysis on US healthcare, health insurance, and health po...

...# ls /lib/modules/`uname -r`/kernel/arch/*/kernel/cpu/cpufreq acpi-cpufreq.ko # find /lib/modules/ -name "*cpufreq*" /lib/modules/2.6.18-92.el5/kernel/drivers/cpufreq /lib/modules/2.6.18-92.el5/kernel/drivers/cpufreq/cpufreq_powersave.ko /lib/modules/2.6.18-92.el5/kernel/drivers/cpufreq/cpufreq_ondemand.ko /lib/modules/2.6.18-92.el5/kernel/drivers/cpufreq/cpufreq_conservative.ko /lib/modules/2.6.18-92.el5/kernel/drivers/cpufreq/cpufreq_stats.ko /lib/modules/2.6.18-92.el5/kernel/arch/x86_64/kernel/cpufreq /lib/modules/2.6.18-92.el5/kernel/arch/x86_64/kernel/cpufreq/acpi-cpufreq.ko /lib/modules/2.6....

...ioatdma ??? Kernel modules: ioatdma # lsmod Module????????????????? Size? Used by autofs4??????????????? 27000? 3 sunrpc??????????????? 267620? 1 8021q????????????????? 20362? 0 garp??????????????????? 7152? 1 8021q stp???????????????????? 2218? 1 garp llc???????????????????? 5418? 2 garp,stp cpufreq_ondemand?????? 10544? 8 acpi_cpufreq??????????? 7763? 1 freq_table????????????? 4936? 2 cpufreq_ondemand,acpi_cpufreq mperf?????????????????? 1557? 1 acpi_cpufreq ipt_REJECT????????????? 2351? 2 nf_conntrack_ipv4?????? 9186? 2 nf_defrag_ipv4????????? 1483? 1 nf_conntrack_ipv4 iptable_filter????????? 279...

...nsecs from the Xen hypervisor.  Xen uses nsecs to measure idle time, while Linux uses ticks. Other than accounting for that difference, use the same algorithm to calculate idle time as Linux does. Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com> diff -r 26962454b508 drivers/cpufreq/cpufreq_ondemand.c --- a/drivers/cpufreq/cpufreq_ondemand.c Wed Oct 24 17:17:09 2007 +0100 +++ b/drivers/cpufreq/cpufreq_ondemand.c Mon Oct 29 12:39:23 2007 -0500 @@ -96,6 +96,7 @@ static inline cputime64_t get_cpu_idle_t return retval; } + /************************** sysfs interface ************************/...

...Linux and Xen have different ideas of what an idle tick is, so the Xen values for both have to be returned in the same platform hypercall. Otherwise, use basically the same scheme as native Linux. Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com> iff -r 9bf1ddd0f6bf drivers/cpufreq/cpufreq_ondemand.c --- a/drivers/cpufreq/cpufreq_ondemand.c Wed Oct 17 09:24:03 2007 +0100 +++ b/drivers/cpufreq/cpufreq_ondemand.c Thu Oct 18 16:08:36 2007 -0500 @@ -221,18 +222,14 @@ static struct attribute_group dbs_attr_g }; /************************** sysfs end ************************/ - -static void dbs_...

...l 2 21:42:59 bkp010 kernel: [ 668.547268] WARNING: at fs/btrfs/backref.c:903 find_parent_nodes+0x616/0x815 [btrfs]() Jul 2 21:42:59 bkp010 kernel: [ 668.547414] Modules linked in: veth ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables cpufreq_ondemand cpufreq_conservative cpufreq_powersave cpufreq_stats bridge stp llc ipv6 btrfs xor raid6_pq zlib_deflate loop acpi_cpufreq mperf freq_table intel_powerclamp kvm_intel kvm crc32_pclmul microcode ehci_pci ehci_hcd i2c_i801 pcspkr button video i2c_core lpc_ich mfd_core ext4 crc16 jbd2 mbcache raid1 sg...

Hello, is anyone experiencing this ? I have a sympa process (bulk.pl) which triggers this bug: ------------[ cut here ]------------ WARNING: at kernel/sched.c:5914 thread_return+0x232/0x79d() (Not tainted) Hardware name: X8DTU-LN4+ Modules linked in: cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 microcode serio_raw i2c_i801 i2c_core iTCO_wdt iTCO_vendor_support igb ioatdma dca i7core_edac edac_core sg ext4 mbcache jbd2 sr_mod cdrom sd_mod crc_t10dif usb_stora...

...001 <1>IP: [<ffffffff810657f3>] load_balance_fair+0x2a3/0x300 <4>PGD 0 <4>Oops: 0000 [#1] SMP <4>last sysfs file: /sys/kernel/mm/ksm/run <4>CPU 0 <4>Modules linked in: ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle autofs4 cpufreq_ondemand acpi_cpufreq freq_table mperf bridge stp llc ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 ext3 jbd vhost_net macvtap macvlan tun kvm_intel kvm ppdev parport_pc parport iTCO_wdt...

...0575067 *pte = 00000000 Oops: 0002 [#1] SMP last sysfs file: /sys/block/sda/removable Modules linked in: kqemu sha256_generic aes_i586 aes_generic cbc usb_storage dm_crypt btrfs zlib_deflate crc32c libcrc32c tun radeon drm usblp af_packet ipv6 binfmt_misc loop dm_mirror dm_region_hash dm_log dm_mod cpufreq_ondemand cpufreq_conservative cpufreq_powersave p4_clockmod freq_table speedstep_lib snd_intel8x0 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device joydev snd_pcm_oss snd_pcm snd_timer usbhid hid snd_mixer_oss snd dvb_usb_dibusb_mc dvb_usb_dibusb_common dib3000mc di...

...6] BUG: unable to handle kernel NULL pointer dereference at virtual address 00000014 [ 899.118938] printing eip: c016d3f1 *pde = 00000000 [ 899.118946] Oops: 0000 [#1] SMP [ 899.118952] Modules linked in: btrfs libcrc32c sonypi ppdev acpi_cpufreq cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_ondemand freq_table cpufreq_conservative video output sbs sbshc container dock microcode ipv6 nfs lockd nfs_acl sunrpc iptable_filter ip_tables x_tables ext3 jbd mbcache af_packet aes_i586 dm_crypt dm_mod sbp2 parport_pc lp parport pcmcia joydev snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm tifm_7xx1 snd_...

...one as well. I don't think the cause of the problem is nouveau specific for that reason, but the kworker that is constantly showing up is definitely part of the nouveau code: kworker/0:3-1128 [000] d.s2 1973.688813: workqueue_queue_work: work struct=ffff88046f2135d8 function=od_dbs_timer [cpufreq_ondemand] workqueue=ffff88046d17ba00 req_cpu=0 cpu=0 kworker/0:3-1128 [000] d.h2 1973.704711: workqueue_queue_work: work struct=ffffffff819b85e0 function=push_to_pool workqueue=ffff88046d17ba00 req_cpu=32 cpu=0 kworker/0:3-1128 [000] d.h3 1973.757128: workqueue_queue_work: work struct=ffff88045db1...

...e freq_table, drv_data and policy */ - if (cpus_empty(cpufreq_dom->map)) { + if (cpumask_empty(cpufreq_dom->map)) { list_del(&cpufreq_dom->node); + free_cpumask_var(cpufreq_dom->map); xfree(cpufreq_dom); } --- 2011-09-20.orig/xen/drivers/cpufreq/cpufreq_ondemand.c 2011-05-11 09:58:42.000000000 +0200 +++ 2011-09-20/xen/drivers/cpufreq/cpufreq_ondemand.c 2011-10-14 14:58:41.000000000 +0200 @@ -122,7 +122,7 @@ static void dbs_check_cpu(struct cpu_dbs return; /* Get Idle Time */ - for_each_cpu_mask(j, policy->cpus) { + for_each_cpu_mas...

...kernel: [ 524.496006] *pde = 00000000 Feb 10 10:59:45 testbox kernel: [ 524.496006] Oops: 0000 [#1] SMP Feb 10 10:59:45 testbox kernel: [ 524.496006] last sysfs file: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map Feb 10 10:59:45 testbox kernel: [ 524.496006] Modules linked in: sunrpc cpufreq_ondemand acpi_cpufreq mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables snd_hda_codec_si3054 snd_hda_codec_realtek arc4 snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device iwl3945 snd_pcm iwlcore mac80211 snd_timer ppdev e1000e snd cfg80211 parport_pc soundcore iTCO_wdt...

...3.575594] ------------[ cut here ]------------ [18483.575644] kernel BUG at fs/btrfs/relocation.c:3296! [18483.575692] invalid opcode: 0000 [#1] SMP [18483.575739] Modules linked in: veth ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables cpufreq_ondemand cpufreq_conservative cpufreq_powersave cpufreq_stats bridge stp llc ipv6 btrfs xor raid6_pq zlib_deflate loop acpi_cpufreq mperf freq_table intel_powerclamp kvm_intel kvm crc32_pclmul i2c_i801 i2c_core video button lpc_ich mfd_core microcode pcspkr ehci_pci ehci_hcd ext4 crc16 jbd2 mbcache raid1 sg...

...still in use (1) [unmount of btrfs sda6] ------------[ cut here ]------------ kernel BUG at fs/dcache.c:675! invalid opcode: 0000 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/dev CPU 1 Modules linked in: btrfs zlib_deflate libcrc32c fuse sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT nf_conntrack_ipv6 ip6table_filter ip6_tables ipv6 uinput snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep ppdev dell_wmi parport_pc e1000e snd_seq parport snd_seq_device wmi snd_pcm snd_timer snd soundcore snd_page_alloc serio_raw i2c_i801 iTCO_wd...

It''s everytime when cpufreq_ondemand or cpufreq-set changes the frequency, aprox. 3 messages per event. Is that occasional? I tend to say: no. Please see an excerpt below. And if it''s not occasional, what could I do? And by the way: I found no code that TSC will get adjusted, so I think it will get worse over the time... Tha...

...ink,ipt_MASQUERADE,iptable_nat nf_conntrack_ipv4 19080 3 iptable_nat nf_conntrack 66752 7 nf_conntrack_netlink,xt_CONNMARK,xt_state,ipt_MASQUERADE,iptable_nat,nf_nat,nf_conntrack_ipv4 cpufreq_userspace 5284 0 cpufreq_powersave 2688 0 xt_TCPMSS 5504 0 cpufreq_ondemand 9740 0 xt_tcpmss 3200 0 cpufreq_conservative 8712 0 xt_tcpudp 4096 2 cpufreq_stats 7104 0 iptable_mangle 3712 1 freq_table 5536 2 cpufreq_ondemand,cpufreq_stats sbs 15112 0 sbshc...

Again, please stop mailing me directly. On 08/16/2016 07:23 AM, Fawzy Ibrhim wrote: > I guess module ioatdma is missing in Centos 7:- I don't think so. I see that module on the host I checked. None of the missing modules appear to be related to RAID: autofs4, cpufreq_ondemand, freq_table, mperf, ipv6, microcode, power_meter. Can you post the output of "dmesg" on your CentOS 6 system here: https://paste.fedoraproject.org/

...803e9401888. (next=ffff8803e9401888). Modules linked in: bridge mptctl mptbase nfsd lockd nfs_acl auth_rpcgss exportfs dlm configfs sunrpc ipmi_devintf cpufreq_ondemand freq_table pcc_cpufreq bondin g 8021q garp stp llc ipv6 power_meter sg microcode serio_raw iTCO_wdt iTCO_vendo...