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Commit ab54f68b authored by Michael Wright's avatar Michael Wright Committed by Paul Lawrence
Browse files

Add i2c tracing support to atrace 

Cherry-picking from internal master

Test: None
Change-Id: Iaf0daa0982bd8d2355d3590d43ad78711e764ee0
parent f5a21ba4

cmds/atrace/atrace.cpp

+11 −0
Original line number Diff line number Diff line
@@ -121,6 +121,17 @@ static const TracingCategory k_categories[] = { 
        { REQ,      "/sys/kernel/debug/tracing/events/irq/enable" },

        { OPT,      "/sys/kernel/debug/tracing/events/ipi/enable" },

    } },

    { "i2c",        "I2C Events",   0, {

        { REQ,      "/sys/kernel/debug/tracing/events/i2c/enable" },

        { REQ,      "/sys/kernel/debug/tracing/events/i2c/i2c_read/enable" },

        { REQ,      "/sys/kernel/debug/tracing/events/i2c/i2c_write/enable" },

        { REQ,      "/sys/kernel/debug/tracing/events/i2c/i2c_result/enable" },

        { REQ,      "/sys/kernel/debug/tracing/events/i2c/i2c_reply/enable" },

        { OPT,      "/sys/kernel/debug/tracing/events/i2c/smbus_read/enable" },

        { OPT,      "/sys/kernel/debug/tracing/events/i2c/smbus_write/enable" },

        { OPT,      "/sys/kernel/debug/tracing/events/i2c/smbus_result/enable" },

        { OPT,      "/sys/kernel/debug/tracing/events/i2c/smbus_reply/enable" },

    } },

    { "freq",       "CPU Frequency",    0, {

        { REQ,      "/sys/kernel/debug/tracing/events/power/cpu_frequency/enable" },

        { OPT,      "/sys/kernel/debug/tracing/events/power/clock_set_rate/enable" },

cmds/atrace/atrace.rc

+9 −0
Original line number Diff line number Diff line
@@ -54,6 +54,15 @@ on post-fs 
    chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_lock/enable

    chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_locked/enable

    chmod 0664 /sys/kernel/debug/tracing/events/binder/binder_unlock/enable

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

    chmod 0664 /sys/kernel/debug/tracing/events/i2c/i2c_read/enable

    chmod 0664 /sys/kernel/debug/tracing/events/i2c/i2c_write/enable

    chmod 0664 /sys/kernel/debug/tracing/events/i2c/i2c_result/enable

    chmod 0664 /sys/kernel/debug/tracing/events/i2c/i2c_reply/enable

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

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

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

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



    # Tracing disabled by default

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