Re: [PATCH] x86, perf: Tweak broken BIOS rules during check_hw_exists

2015-06-02 Thread George Dunlap
On 05/21/2015 06:57 PM, George Dunlap wrote: > On 05/18/2015 08:16 PM, Don Zickus wrote: >> I stumbled upon an AMD box that had the BIOS using a hardware counter. >> Instead >> of printing out a warning and continuing, it failed and blocked further perf >> counter usage. >> >> Looking through the

Re: [PATCH] x86, perf: Tweak broken BIOS rules during check_hw_exists

2015-05-21 Thread George Dunlap
On 05/18/2015 08:16 PM, Don Zickus wrote: > I stumbled upon an AMD box that had the BIOS using a hardware counter. > Instead > of printing out a warning and continuing, it failed and blocked further perf > counter usage. > > Looking through the history, I found commit a5ebe0ba3dff had tweaked th

Re: [PATCH] x86, perf: Tweak broken BIOS rules during check_hw_exists

2015-05-19 Thread Peter Zijlstra
On Mon, May 18, 2015 at 03:16:48PM -0400, Don Zickus wrote: > I stumbled upon an AMD box that had the BIOS using a hardware counter. > Instead > of printing out a warning and continuing, it failed and blocked further perf > counter usage. Hehe, which was the original behaviour iirc. > Looking t