* Ask help about killing irqchip.irq_print_chip on PPC platforms [not found] <54991DE5.5090805@linux.intel.com> @ 2014-12-23 7:56 ` Jiang Liu 0 siblings, 0 replies; 4+ messages in thread From: Jiang Liu @ 2014-12-23 7:56 UTC (permalink / raw) To: Tudor Laurentiu, Thomas Gleixner, Scott Wood Cc: linuxppc-dev, Linux Kernel Mailing List Hi Scott and Tudor, Sorry, resend and Ccing the list. We are trying to clean up some irqchip interfaces, and irqchip.irq_print_chip is a candidate for removal. After some changes on x86 side, arch/powerpc/sysdev/fsl_msi.c may be the last user of irqchip.irq_print_chip. So could you please help to advice on whether we could kill irqchip.irq_print_chip by using "fsl-msi" instead of "fsl-msi-%d" for irqchip name? Will it break any userspace interfaces? Thanks! Gerry ^ permalink raw reply [flat|nested] 4+ messages in thread
* Ask help about killing irqchip.irq_print_chip on PPC platforms @ 2014-12-23 7:56 ` Jiang Liu 0 siblings, 0 replies; 4+ messages in thread From: Jiang Liu @ 2014-12-23 7:56 UTC (permalink / raw) To: Tudor Laurentiu, Thomas Gleixner, Scott Wood Cc: Linux Kernel Mailing List, linuxppc-dev Hi Scott and Tudor, Sorry, resend and Ccing the list. We are trying to clean up some irqchip interfaces, and irqchip.irq_print_chip is a candidate for removal. After some changes on x86 side, arch/powerpc/sysdev/fsl_msi.c may be the last user of irqchip.irq_print_chip. So could you please help to advice on whether we could kill irqchip.irq_print_chip by using "fsl-msi" instead of "fsl-msi-%d" for irqchip name? Will it break any userspace interfaces? Thanks! Gerry ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Ask help about killing irqchip.irq_print_chip on PPC platforms 2014-12-23 7:56 ` Jiang Liu @ 2014-12-23 7:58 ` Scott Wood -1 siblings, 0 replies; 4+ messages in thread From: Scott Wood @ 2014-12-23 7:58 UTC (permalink / raw) To: Jiang Liu Cc: Tudor Laurentiu, Thomas Gleixner, linuxppc-dev, Linux Kernel Mailing List On Tue, 2014-12-23 at 15:56 +0800, Jiang Liu wrote: > Hi Scott and Tudor, > Sorry, resend and Ccing the list. Resending reply... > We are trying to clean up some irqchip interfaces, and > irqchip.irq_print_chip is a candidate for removal. After some > changes on x86 side, arch/powerpc/sysdev/fsl_msi.c may be the > last user of irqchip.irq_print_chip. So could you please help > to advice on whether we could kill irqchip.irq_print_chip > by using "fsl-msi" instead of "fsl-msi-%d" for irqchip name? > Will it break any userspace interfaces? > Thanks! > Gerry fsl-msi-%d was introduced to allow userspace to identify the cascade interrupt belonging to a particular MSI, for the purpose of setting affinity, as this cannot be done on the MSI itself due to hardware limitations. Removing it would not exactly eliminate a lot of code or complexity... -Scott ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Ask help about killing irqchip.irq_print_chip on PPC platforms @ 2014-12-23 7:58 ` Scott Wood 0 siblings, 0 replies; 4+ messages in thread From: Scott Wood @ 2014-12-23 7:58 UTC (permalink / raw) To: Jiang Liu Cc: Tudor Laurentiu, Thomas Gleixner, Linux Kernel Mailing List, linuxppc-dev On Tue, 2014-12-23 at 15:56 +0800, Jiang Liu wrote: > Hi Scott and Tudor, > Sorry, resend and Ccing the list. Resending reply... > We are trying to clean up some irqchip interfaces, and > irqchip.irq_print_chip is a candidate for removal. After some > changes on x86 side, arch/powerpc/sysdev/fsl_msi.c may be the > last user of irqchip.irq_print_chip. So could you please help > to advice on whether we could kill irqchip.irq_print_chip > by using "fsl-msi" instead of "fsl-msi-%d" for irqchip name? > Will it break any userspace interfaces? > Thanks! > Gerry fsl-msi-%d was introduced to allow userspace to identify the cascade interrupt belonging to a particular MSI, for the purpose of setting affinity, as this cannot be done on the MSI itself due to hardware limitations. Removing it would not exactly eliminate a lot of code or complexity... -Scott ^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] <54991DE5.5090805@linux.intel.com>
2014-12-23 7:56 ` Ask help about killing irqchip.irq_print_chip on PPC platforms Jiang Liu
2014-12-23 7:56 ` Jiang Liu
2014-12-23 7:58 ` Scott Wood
2014-12-23 7:58 ` Scott Wood
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