perf/x86/intel/uncore: Support MMIO type uncore blocks

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A new MMIO type uncore box is introduced on Snow Ridge server. The
counters of MMIO type uncore box can only be accessed by MMIO.

Add a new uncore type, uncore_mmio_uncores, for MMIO type uncore blocks.

Support MMIO type uncore blocks in CPU hot plug. The MMIO space has to
be map/unmap for the first/last CPU. The context also need to be
migrated if the bind CPU changes.

Add mmio_init() to init and register PMUs for MMIO type uncore blocks.

Add a helper to calculate the box_ctl address.

The helpers which calculate ctl/ctr can be shared with PCI type uncore
blocks.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: acme@kernel.org
Cc: eranian@google.com
Link: https://lkml.kernel.org/r/1556672028-119221-5-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

...

This commit is contained in:

Kan Liang 2019-04-30 17:53:46 -07:00 • committed by Ingo Molnar

parent c8872d90e0

commit 3da04b8a00

2 changed files with 60 additions and 12 deletions

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51

arch/x86/events/intel/uncore.c

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21

arch/x86/events/intel/uncore.h

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