Hi Greg, On Thu, Nov 29, 2018 at 08:49:36AM +0100, Greg KH wrote: > On Wed, Nov 28, 2018 at 03:01:16PM -0700, Mathieu Poirier wrote: > > This patch uses the PMU driver configuration held in event::hw::drv_config > > to select a sink for each event that is created (the old sysFS way of > > working is kept around for backward compatibility). > > It is "sysfs", no InterCaps please, I've never called it that in the > past. > > And just use sysfs, if that does not work properly, then fix that, don't > create yet-another-way-to-configure-this-thing to just confuse people. Thanks for the review, you've provided usefull comments. Regarding the "char *" argument for the ioctl, I followed an example that currently exist but I can proceed differently. My goal with this patchset was specifically to fix what is wrong with sysfs and completely take it out of the equation. The only reason to keep the kernel interface alive was to prevent braking older user space perf tools currently using it. I chose to use an ioctl() because it is flexible and well suited for the dynamic nature of perf events. It is also currently used to set various event specific configuration so doing the same adds to the established pattern and avoids creating a new way of doing things, something the perf crew would have been quick to point out. Was my approach wrong? Regards, Mathieu > > thanks, > > greg k-h
