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Commit f1f62e3b authored by Marc Hittinger's avatar Marc Hittinger
Browse files

Enable lowmemory trace events in atrace 

Enable collection of lowmemory events in atrace as a category. These
events have been available in the kernel, but not exposed via atrace.

Bug: https://github.com/catapult-project/catapult/issues/3557
Test: Run "atrace memreclaim", trigger LMK events.
Change-Id: I92140518796bdda8b302d566d7d78e2129b9839c
parent 351bb0ce

cmds/atrace/atrace.cpp

+1 −0
Original line number Original line Diff line number Diff line
@@ -172,6 +172,7 @@ static const TracingCategory k_categories[] = { 
        { REQ,      "events/vmscan/mm_vmscan_direct_reclaim_end/enable" },

        { REQ,      "events/vmscan/mm_vmscan_direct_reclaim_end/enable" },

        { REQ,      "events/vmscan/mm_vmscan_kswapd_wake/enable" },

        { REQ,      "events/vmscan/mm_vmscan_kswapd_wake/enable" },

        { REQ,      "events/vmscan/mm_vmscan_kswapd_sleep/enable" },

        { REQ,      "events/vmscan/mm_vmscan_kswapd_sleep/enable" },

        { REQ,      "events/lowmemorykiller/enable" },

    } },

    } },

    { "regulators",  "Voltage and Current Regulators", 0, {

    { "regulators",  "Voltage and Current Regulators", 0, {

        { REQ,      "events/regulator/enable" },

        { REQ,      "events/regulator/enable" },

cmds/atrace/atrace.rc

+4 −0
Original line number Original line Diff line number Diff line
@@ -51,6 +51,8 @@ on post-fs 
    chown root shell /sys/kernel/tracing/events/binder/binder_locked/enable

    chown root shell /sys/kernel/tracing/events/binder/binder_locked/enable

    chown root shell /sys/kernel/debug/tracing/events/binder/binder_unlock/enable

    chown root shell /sys/kernel/debug/tracing/events/binder/binder_unlock/enable

    chown root shell /sys/kernel/tracing/events/binder/binder_unlock/enable

    chown root shell /sys/kernel/tracing/events/binder/binder_unlock/enable

    chown root shell /sys/kernel/debug/tracing/events/lowmemorykiller/enable

    chown root shell /sys/kernel/tracing/events/lowmemorykiller/enable





    chown root shell /sys/kernel/debug/tracing/tracing_on

    chown root shell /sys/kernel/debug/tracing/tracing_on

    chown root shell /sys/kernel/tracing/tracing_on

    chown root shell /sys/kernel/tracing/tracing_on
@@ -119,6 +121,8 @@ on post-fs 
    chmod 0664 /sys/kernel/tracing/events/i2c/smbus_result/enable

    chmod 0664 /sys/kernel/tracing/events/i2c/smbus_result/enable

    chmod 0664 /sys/kernel/debug/tracing/events/i2c/smbus_reply/enable

    chmod 0664 /sys/kernel/debug/tracing/events/i2c/smbus_reply/enable

    chmod 0664 /sys/kernel/tracing/events/i2c/smbus_reply/enable

    chmod 0664 /sys/kernel/tracing/events/i2c/smbus_reply/enable

    chmod 0664 /sys/kernel/debug/tracing/events/lowmemorykiller/enable

    chmod 0664 /sys/kernel/tracing/events/lowmemorykiller/enable





    # Tracing disabled by default

    # Tracing disabled by default

    write /sys/kernel/debug/tracing/tracing_on 0

    write /sys/kernel/debug/tracing/tracing_on 0