[PATCH v5] binder: transaction latency tracking for user build

[Frankie Chang]

Frankie.Chang (3):
  binder: move structs from core file to header file
  binder: add trace at free transaction.
  binder: add transaction latency tracer

 drivers/android/Kconfig                 |   8 +
 drivers/android/Makefile                |   1 +
 drivers/android/binder.c                | 408 +----------------------
 drivers/android/binder_internal.h       | 416 ++++++++++++++++++++++++
 drivers/android/binder_latency_tracer.c | 108 ++++++
 drivers/android/binder_trace.h          |  49 +++
 6 files changed, 586 insertions(+), 404 deletions(-)  create mode 100644 drivers/android/binder_latency_tracer.c

Change from v5:
  - change config name to the proper one, CONFIG_BINDER_TRANSACTION_LATENCY_TRACKING.
  - change tracepoint name to more descriptive one, trace_binder_txn_latency_(alloc|info|free)
  - enhance some lock protection.

Change from v4:
  - split up into patch series.

Change from v3:
  - use tracepoints for binder_update_info and print_binder_transaction_ext,
    instead of custom registration functions.

Change from v2:
  - create transaction latency module to monitor slow transaction.

Change from v1:
  - first patchset.