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authorKan Liang <[email protected]>2024-06-26 07:35:37 -0700
committerPeter Zijlstra <[email protected]>2024-07-04 16:00:38 +0200
commit608f6976c309793ceea37292c54b057dab091944 (patch)
tree8e1f51f2bae6bc157724e1dffe1b625fef455cd3 /tools/testing/selftests/bpf/progs/test_autoload.c
parent090262439f66df03d4e9d0e52e14104b729e2ef8 (diff)
perf/x86/intel: Support new data source for Lunar Lake
A new PEBS data source format is introduced for the p-core of Lunar Lake. The data source field is extended to 8 bits with new encodings. A new layout is introduced into the union intel_x86_pebs_dse. Introduce the lnl_latency_data() to parse the new format. Enlarge the pebs_data_source[] accordingly to include new encodings. Only the mem load and the mem store events can generate the data source. Introduce INTEL_HYBRID_LDLAT_CONSTRAINT and INTEL_HYBRID_STLAT_CONSTRAINT to mark them. Add two new bits for the new cache-related data src, L2_MHB and MSC. The L2_MHB is short for L2 Miss Handling Buffer, which is similar to LFB (Line Fill Buffer), but to track the L2 Cache misses. The MSC stands for the memory-side cache. Signed-off-by: Kan Liang <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Reviewed-by: Andi Kleen <[email protected]> Reviewed-by: Ian Rogers <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
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