Kan Liang 722e42e45c perf/x86: Support counter mask ... The current perf assumes that both GP and fixed counters are contiguous. But it's not guaranteed on newer Intel platforms or in a virtualization environment. Use the counter mask to replace the number of counters for both GP and the fixed counters. For the other ARCHs or old platforms which don't support a counter mask, using GENMASK_ULL(num_counter - 1, 0) to replace. There is no functional change for them. The interface to KVM is not changed. The number of counters still be passed to KVM. It can be updated later separately. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Andi Kleen <ak@linux.intel.com> Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lkml.kernel.org/r/20240626143545.480761-3-kan.liang@linux.intel.com		2024-07-04 16:00:36 +02:00
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core.c	perf/x86: Support counter mask	2024-07-04 16:00:36 +02:00
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