Peter Zijlstra 012669c740 perf: Fix task context PMU for Hetero ... On HETEROGENEOUS hardware (ARM big.Little, Intel Alderlake etc.) each CPU might have a different hardware PMU. Since each such PMU is represented by a different struct pmu, but we only have a single HW task context. That means that the task context needs to switch PMU type when it switches CPUs. Not doing this means that ctx->pmu calls (pmu_{dis,en}able(), {start,commit,cancel}_txn() etc.) are called against the wrong PMU and things will go wobbly. Fixes: f83d2f91d2 ("perf/x86/intel: Add Alder Lake Hybrid support") Reported-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Kan Liang <kan.liang@linux.intel.com> Link: https://lkml.kernel.org/r/YMsy7BuGT8nBTspT@hirez.programming.kicks-ass.net		2021-06-23 18:30:56 +02:00
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events	perf: Fix task context PMU for Hetero	2021-06-23 18:30:56 +02:00
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