On Mon, Aug 01, 2022 at 10:20:27AM +0800, yekai (A) wrote: > > > On 2022/7/30 19:06, Greg KH wrote: > > On Sat, Jul 30, 2022 at 04:32:45PM +0800, Kai Ye wrote: > >> Update documentation describing sysfs node that could help to > >> configure isolation strategy for users in the user space. And > >> describing sysfs node that could read the device isolated state. > >> > >> Signed-off-by: Kai Ye <yekai13@xxxxxxxxxx> > >> --- > >> Documentation/ABI/testing/sysfs-driver-uacce | 17 +++++++++++++++++ > >> 1 file changed, 17 insertions(+) > >> > >> diff --git a/Documentation/ABI/testing/sysfs-driver-uacce b/Documentation/ABI/testing/sysfs-driver-uacce > >> index 08f2591138af..1601f9dac29c 100644 > >> --- a/Documentation/ABI/testing/sysfs-driver-uacce > >> +++ b/Documentation/ABI/testing/sysfs-driver-uacce > >> @@ -19,6 +19,23 @@ Contact: linux-accelerators@xxxxxxxxxxxxxxxx > >> Description: Available instances left of the device > >> Return -ENODEV if uacce_ops get_available_instances is not provided > >> > >> +What: /sys/class/uacce/<dev_name>/isolate_strategy > >> +Date: Jul 2022 > >> +KernelVersion: 5.20 > >> +Contact: linux-accelerators@xxxxxxxxxxxxxxxx > >> +Description: (RW) Configure the frequency size for the hardware error > >> + isolation strategy. This size is a configured integer value. > >> + The default is 0. The maximum value is 65535. This value is a > >> + threshold based on your driver handling strategy. > > what is a "driver handling strategy"? What exactly is this units in? > > Any documentation for how to use this? > > > > thanks, > > > > greg k-h > > . > The unit is the number of times, also means frequency size. > e.g. > In the hisilicon acc engine, First we will time-stamp every slot AER error. Then check the AER error log when the device > AER error occurred. if the device slot AER error count exceeds the preset the number of times in one hour, the isolated state > will be set to true. So the device will be isolated. And the AER error log that exceed one hour will be cleared. Of course, > different strategy can be defined in different drivers. Ok, can you please explain this better here when you redo the patch series? thanks, greg k-h
