On 11/10/2015 12:59 AM, Sinan Kaya wrote: > > On 11/9/2015 2:15 AM, Hannes Reinecke wrote: >> On 11/09/2015 02:57 AM, Sinan Kaya wrote: >>> The mpt2sas and mpt3sas drivers are spinning forever in >>> their IRQ handlers if there are a lot of jobs queued up >>> by the PCIe card. This handler is causing spikes for >>> the rest of the system and sluggish behavior. >>> >>> Marking all MSI interrupts as non-shared and moving the >>> MSI interrupts to thread context. This relexes the rest >>> of the system execution. >>> >> NACK. >> >> If there is a scalability issue when handling interrupts >> it should be fixed in the driver directly. >> >> Looking at the driver is should be possible to implement >> a worker thread handling the reply descriptor, and having the >> interrupt only to fetch the reply descriptor. >> > > Can you go into the detail about which part of the _base_interrupt > function needs to be executed in ISR context and which part can be > queued up to worker thread? > > I'm not familiar with the hardware or the code. That's why, I moved the > entire ISR into the thread context. Hannes or others, any suggestions? Thanks, Christopher Covington -- Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
