perf/x86/intel/uncore: Add infrastructure for free running counters

There are a number of free running counters introduced for uncore, which
provide highly valuable information to a wide array of customers.
However, the generic uncore code doesn't support them yet.

The free running counters will be specially handled based on their
unique attributes:

 - They are read-only. They cannot be enabled/disabled.

 - The event and the counter are always 1:1 mapped. It doesn't need to
   be assigned nor tracked by event_list.

 - They are always active. It doesn't need to check the availability.

 - They have different bit width.

Also, using inline helpers to replace the check for fixed counter and
free running counter.

Signed-off-by: Kan Liang <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

0 files changed, 0 insertions, 0 deletions