Hi Deng-Cheng, >Do you know why it didn't happen? I must have forgotten to upload this patch along with other patches I submitted a while ago. I will verify that this patch is valid as is and submit it. Raghu >-----Original Message----- >From: Deng-Cheng Zhu [mailto:dengcheng.zhu@xxxxxxxxx] >Sent: Thursday, February 23, 2012 2:11 AM >To: Mikael Starvik; Gandham, Raghu >Cc: linux-mips@xxxxxxxxxxxxxx >Subject: Re: SMP MIPS and Linux 3.2 > >I should have contacted the author (Raghu Gandham) of a fix for this >issue to get it into the mainline. But it slipped out of my mind... > >The patch link is here: >http://git.linux-mips.org/?p=linux- >mti.git;a=commitdiff;h=5460815027d802697b879644c74f0e8365254020 > >Hi, Raghu > >Do you know why it didn't happen? > > >Deng-Cheng > >On Wed, Feb 22, 2012 at 6:57 PM, Mikael Starvik ><mikael.starvik@xxxxxxxx> wrote: >> >> Found it! There are no calls to scheduler_ipi() from the MIPS parts in >vanilla 3.2. >> >> /Mikael >> >> -----Original Message----- >> From: Mikael Starvik >> Sent: den 20 februari 2012 10:34 >> To: 'linux-mips@xxxxxxxxxxxxxx' >> Subject: SMP MIPS and Linux 3.2 >> >> I'm running Linux 3.2 on a MIPS 34K with two VPEs (in MT_SMP >configuration). It works fine in UP but with SMP it deadlocks during >bootup (both CPUs gets idle). Typically like this: >> >> [ 0.090000] CPU revision is: 01019550 (MIPS 34Kc) [ 0.090000] >Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes. >> [ 0.090000] Primary data cache 32kB, 4-way, PIPT, no aliases, >linesize 32 bytes [ 0.170000] Brought up 2 CPUs <No more output> >> >> I have tried to enable __ARCH_WANT_INTERRUPTS_ON_CTXSW but that didn't >improve anything. Anyone else got this running or have any thoughts >about what the problem may be? >> >> Best Regards >> /Mikael >>
