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[37.188.169.187]) by smtp.gmail.com with ESMTPSA id t141sm34654245wmt.26.2020.07.20.07.32.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Jul 2020 07:32:14 -0700 (PDT) Date: Mon, 20 Jul 2020 16:32:13 +0200 From: Michal Hocko To: Alan Stern Cc: LKML , Greg KH , linux-usb@vger.kernel.org, "Rafael J. Wysocki" Subject: Re: kworker/0:3+pm hogging CPU Message-ID: <20200720143213.GJ4074@dhcp22.suse.cz> References: <20200720083956.GA4074@dhcp22.suse.cz> <20200720135857.GB1228057@rowland.harvard.edu> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="fdj2RfSjLxBAspz7" Content-Disposition: inline In-Reply-To: <20200720135857.GB1228057@rowland.harvard.edu> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --fdj2RfSjLxBAspz7 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon 20-07-20 09:58:57, Alan Stern wrote: [...] > Can you provide the contents of /sys/kernel/debug/usb/devices and also a attached. > usbmon trace showing a few rounds of this recurring activity? This is not my area so I will need some help here. I assume I should look for debug/usb/usbmon which contains quite some files for me 0s 0u 1s 1t 1u 2s 2t 2u most of them provide data when cating them. > section of the dmesg log with dynamic debugging enabled for the usbcore > module, as well. Could you give me more details steps please? -- Michal Hocko SUSE Labs --fdj2RfSjLxBAspz7 Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename="usb.devices" T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh=12 B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0 D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=1d6b ProdID=0002 Rev= 5.08 S: Manufacturer=Linux 5.8.0-rc6-00001-g5714ee50bb43 xhci-hcd S: Product=xHCI Host Controller S: SerialNumber=0000:00:14.0 C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms T: Bus=01 Lev=01 Prnt=01 Port=06 Cnt=01 Dev#= 2 Spd=480 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=0a5c ProdID=5800 Rev= 1.01 S: Manufacturer=Broadcom Corp S: Product=5880 S: SerialNumber=0123456789ABCD C:* #Ifs= 2 Cfg#= 0 Atr=e0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=fe(app. ) Sub=00 Prot=00 Driver=(none) E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=85(I) Atr=03(Int.) MxPS= 16 Ivl=125us I:* If#= 1 Alt= 0 #EPs= 3 Cls=0b(scard) Sub=00 Prot=00 Driver=usbfs E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=86(I) Atr=03(Int.) MxPS= 16 Ivl=125us T: Bus=01 Lev=01 Prnt=01 Port=07 Cnt=02 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=8087 ProdID=0a2b Rev= 0.01 C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none) E: Ad=81(I) Atr=03(Int.) MxPS= 64 Ivl=1ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none) E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none) E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none) E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none) E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none) E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=(none) E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 6 B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0 D: Ver= 3.00 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1 P: Vendor=1d6b ProdID=0003 Rev= 5.08 S: Manufacturer=Linux 5.8.0-rc6-00001-g5714ee50bb43 xhci-hcd S: Product=xHCI Host Controller S: SerialNumber=0000:00:14.0 C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms --fdj2RfSjLxBAspz7--