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95107b30be
The big change is the addition of the hwlat tracer. It not only detects SMIs, but also other latency that's caused by the hardware. I have detected some latency from large boxes having bus contention. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJX9a77AAoJEKKk/i67LK/8UPEH/jcqMmOMhQYVQsNaJViA5uJM SV96gaLCc9cxXY04Hf7vx8RkVIyIqTCCQZ+RVZt4RSeqpsB2IzZ1u0CNKs2Z0MTv MdvQJoazRoDgVuPzKAsdAlDd0ykqHEFA5ayF3XDK4P2J97La+B4rQIqEiJX/aDrz i0NQQFg2ZF46mXJXn4oXe6nmr6WnbiEduawVjd7JvgILJO2hojDicOTQlNG41Nys 68fOV8mLk0OL7sFRjySLGcbdbKhP2YbNhxILXl8geLgS9+CFZXkE8oTRjjy9IMNA XrqbFLMWaRVv+Nig7bHIWKE8ZErC5WCYUw4LD2GTLMDx5AkAVLGFFp6TOiO4SG8= =ke23 -----END PGP SIGNATURE----- Merge tag 'trace-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "This release cycle is rather small. Just a few fixes to tracing. The big change is the addition of the hwlat tracer. It not only detects SMIs, but also other latency that's caused by the hardware. I have detected some latency from large boxes having bus contention" * tag 'trace-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Call traceoff trigger after event is recorded ftrace/scripts: Add helper script to bisect function tracing problem functions tracing: Have max_latency be defined for HWLAT_TRACER as well tracing: Add NMI tracing in hwlat detector tracing: Have hwlat trace migrate across tracing_cpumask CPUs tracing: Add documentation for hwlat_detector tracer tracing: Added hardware latency tracer ftrace: Access ret_stack->subtime only in the function profiler function_graph: Handle TRACE_BPUTS in print_graph_comment tracing/uprobe: Drop isdigit() check in create_trace_uprobe |
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