Change from v12: - rebase. Change from v11: - rebase.
Change from v10: - replace timespec64 with ktime_t. - fix build warning. Change from v9: - rename timestamp to ts in binder_internal.h for conciseness. - change timeval to timespec64 in binder_internal.h Change from v8: - change rtc_time_to_tm to rtc_time64_to_tm. - change timeval to __kernel_old_timeval due to https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c766d1472c70d25ad475cf56042af1652e792b23 - export tracepoint symbol for binder_txn_latency_* which binder_transaction_latency_tracer to be ko needed. Change from v7: - Use the passed-in values instead of accessing via t->from/to_proc/to_thread for trace_binder_txn_latency_free, when trace_binder_txn_latency_free_enable() return true. - make a helper function to do the above. Change from v6: - change CONFIG_BINDER_TRANSACTION_LATENCY_TRACKING type from bool to tristate - add comments to @timestamp and @tv under struct binder_transaction - make binder_txn_latency threshold configurable - enhance lock protection 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. 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 | 430 ++---------------------- drivers/android/binder_internal.h | 419 +++++++++++++++++++++++ drivers/android/binder_latency_tracer.c | 107 ++++++ drivers/android/binder_trace.h | 49 +++ 6 files changed, 608 insertions(+), 406 deletions(-) create mode 100644 drivers/android/binder_latency_tracer.c