Hi Thomas, Thanks for the suggestion. I tried boosting priority of [irq/16-serial] to 70 and then 95 with no observable difference from before. I still see the input overruns when I up-arrow to backup through shell history (and the terminal sends up-arrow escape sequences as small serial bursts at 115200). /proc/interrupts also indicates that serial interrupts do count upwards in good quantity. Regards, Darcy -----Original Message----- From: Thomas Gleixner [mailto:tglx@xxxxxxxxxxxxx] Sent: Tuesday, April 06, 2010 7:46 AM To: Darcy Watkins Cc: linux-rt-users@xxxxxxxxxxxxxxx Subject: Re: Kernel 2.6.33.1-rt11 on PPC405 UIC spinlock and serial input overruns On Tue, 6 Apr 2010, Darcy L. Watkins wrote: > ... This patch is carried forward from old RT board support code > originally from Timesys for the AMCC Taihu circa kernel version 2.6.23 > (it implemented taihu under arch/powerpc but this never made its way > into the kernel.org code). I have also tried it without this patch and > have not noticed any difference in behavior. Have you tried to up the priority of that serial IRQ thread ? Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
