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Date:   Tue, 28 Jul 2020 11:19:58 +0800
From:   Frankie Chang <Frankie.Chang@...iatek.com>
To:     Todd Kjos <tkjos@...gle.com>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Martijn Coenen <maco@...roid.com>,
        Arve Hjønnevåg <arve@...roid.com>,
        Christian Brauner <christian@...uner.io>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <wsd_upstream@...iatek.com>,
        Jian-Min Liu <Jian-Min.Liu@...iatek.com>,
        Frankie Chang <Frankie.Chang@...iatek.com>
Subject: [PATCH v6] binder: transaction latency tracking for user build


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.

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