Date: Mon, 25 Mar 2019 14:00:18 -0600 From: Ian Lepore <ian@freebsd.org> To: Karl Denninger <karl@denninger.net>, ticso@cicely.de Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: Options for FBSD support with LCD device - new project [[Maybe related: I2c issues on the Pi2]] Message-ID: <4f4e94ea0aeb325440960782aafe2dcb7a7b6ad3.camel@freebsd.org> In-Reply-To: <e0d25d47-98c9-4722-f798-bac2509450d8@denninger.net> References: <004ddba628b94b80845d8e509ddcb648d21fd6c9.camel@freebsd.org> <C68D7E6E-03C1-448F-8638-8BD1717DBF44@jeditekunum.com> <ac7d434f16f3a89f5ef247678d6becdbeded5c3f.camel@freebsd.org> <CE40E2B5-2244-4EF9-B67F-34A54D71E2E8@jeditekunum.com> <f60ea6d2-b696-d896-7bcb-ac628f41f7b8@denninger.net> <20190319161423.GH57400@cicely7.cicely.de> <52df098fdc0caf5de1879c93239534fffbd49b56.camel@freebsd.org> <40f57de2-2b25-3981-a416-b9958cc97636@denninger.net> <669892ac3fc37b0843a156c0ab102316829103fd.camel@freebsd.org> <663f2566-b035-7011-70eb-4163b41e6e55@denninger.net> <20190325164827.GL57400@cicely7.cicely.de> <3db9cf8a-68ee-e339-67bf-760ee51464fd@denninger.net> <fc17ac0f77832e840b9fffa9b1074561f1e766d8.camel@freebsd.org> <d96c7f42-f01b-8990-a558-ee92d631b51d@denninger.net> <30c8e58c15aec809522b5aa563755d66fea0f4ac.camel@freebsd.org> <e0d25d47-98c9-4722-f798-bac2509450d8@denninger.net>
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On Mon, 2019-03-25 at 14:25 -0500, Karl Denninger wrote: > On 3/25/2019 12:37, Ian Lepore wrote: > > > > > > > [...] > > > > Apply this patch... > > > > https://svnweb.freebsd.org/base/head/sys/kern/kern_intr.c?view=patch&r1=345475&r2=345474&pathrev=345475 > > > > -- Ian > > Here's where it's coming from: > > root@rpi2:~ # vmstat -i > interrupt total rate > local_intc0,1:-mer0 80944 1361 > local_intc0,3:-mer0 32210287 541604 > local_intc0,8:-ntc0 888341 14937 > local_intc0,9: pmu0 2 0 > intc0,1: mbox0 40 1 > intc0,2: vchiq0 2 0 > intc0,17:-x_dwcotg0 1242279 20888 > intc0,28: bcm_dma0 74686 1256 > intc0,61: iichb0 1 0 > intc0,65: uart0 1856 31 > intc0,70:-dhci_bcm0 8952 151 > cpu0:rendezvous 13 0 > cpu1:rendezvous 14 0 > cpu2:rendezvous 15 0 > cpu3:rendezvous 18 0 > cpu2:ast 1 0 > cpu0:preempt 3167 53 > cpu1:preempt 13062 220 > cpu2:preempt 11133 187 > cpu0:hardclock 2 0 > Total 34534815 580690 > > We really need to change the name of the local_intc controller to something shorter. I'm going to venture a guess that -mer0 is 'timer0'. That leads to the question of whether the driver is broken somehow, or whether some callout is being scheduled for a crazy-high rate. -- Ian
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