Re: 3.3-rc1 console lag (was: Re: [PATCH v8 00/20] OMAP2+: UART: Runtime adaptation + cleanup)
Hi Paul, On Wed, Jan 25, 2012 at 9:00 PM, Paul Walmsley p...@pwsan.com wrote: ... Ensure CONFIG_OMAP_PRM is set while testing irq_chaining with uart. And for pm_qos usage ensure CONFIG_CPU_IDLE is selected other wise console might be sluggish. There is console lag for omap2plus_defconfig given that CONFIG_CPU_IDLE is not enabled. Is the intention to force CPU_IDLE into the defconfig or find an alternative for the new pm_qos when cpu idle is disabled. Seen on beagle-xm and 3.3-rc1. Try this http://marc.info/?l=linux-arm-kernelm=132754676814391w=2 I tried the series and the console returned to normal, I can confirm that the following patch helps: tty: serial: OMAP: use a 1-byte RX FIFO threshold in PIO mode Thanks, Omar -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
3.3-rc1 console lag (was: Re: [PATCH v8 00/20] OMAP2+: UART: Runtime adaptation + cleanup)
Hi, On Fri, Nov 11, 2011 at 3:57 AM, Govindraj.R govindraj.r...@ti.com wrote: Converting uart driver to adapt to pm runtime API's. Code re-org + cleanup. Moving some functionality from serial.c to omap-serial.c ... Ensure CONFIG_OMAP_PRM is set while testing irq_chaining with uart. And for pm_qos usage ensure CONFIG_CPU_IDLE is selected other wise console might be sluggish. There is console lag for omap2plus_defconfig given that CONFIG_CPU_IDLE is not enabled. Is the intention to force CPU_IDLE into the defconfig or find an alternative for the new pm_qos when cpu idle is disabled. Seen on beagle-xm and 3.3-rc1. Regards, Omar -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: 3.3-rc1 console lag (was: Re: [PATCH v8 00/20] OMAP2+: UART: Runtime adaptation + cleanup)
On Wed, 25 Jan 2012, Ramirez Luna, Omar wrote: Hi, On Fri, Nov 11, 2011 at 3:57 AM, Govindraj.R govindraj.r...@ti.com wrote: Converting uart driver to adapt to pm runtime API's. Code re-org + cleanup. Moving some functionality from serial.c to omap-serial.c ... Ensure CONFIG_OMAP_PRM is set while testing irq_chaining with uart. And for pm_qos usage ensure CONFIG_CPU_IDLE is selected other wise console might be sluggish. There is console lag for omap2plus_defconfig given that CONFIG_CPU_IDLE is not enabled. Is the intention to force CPU_IDLE into the defconfig or find an alternative for the new pm_qos when cpu idle is disabled. Seen on beagle-xm and 3.3-rc1. Try this http://marc.info/?l=linux-arm-kernelm=132754676814391w=2 - Paul -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
