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ftrace: add trace-cmd for ftrace control and config 

Rather than manually configuring ftrace, trace-cmd was created
to provide a more user friendly interface to the tracer.

Some examples are:

 # ./trace-cmd record -e all ls /bin

Then to see the information:

 # ./trace-cmd report

To see just a subsystem:

 # ./trace-cmd record -e irq ls /bin

To list the available trace events:

 # ./trace-cmd list -e

You can also trace a single trace point with one of two methods:

 # ./trace-cmd record -e sched:sched_wakeup ls /bin

Or simply:

 # ./trace-cmd record -e sched_wakeup ls /bin

This tool also works with tracers (plugins) as well as events

 # ./trace-cmd list -p

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
This commit is contained in:
Bruce Ashfield 2010-08-20 12:24:43 -04:00 committed by Richard Purdie
parent 70cd1ff43f
commit e76f76a37d
2 changed files with 22 additions and 0 deletions
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1
meta/conf/distro/include/poky-default-revisions.inc
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@ -123,6 +123,7 @@ SRCREV_pn-qemugl-nativesdk ??= "d888bbc723c00d197d34a39b5b7448660ec1b1c0"
SRCREV_pn-screenshot ??= "292"
SRCREV_pn-table ??= "4b267533ce16656cba4104fc39dc12709c1bdddf"
SRCREV_pn-tasks ??= "ea52d46d691c5fce4473ea4e24a35411381f3a65"
SRCREV_pn-trace-cmd ??= "0d252224626bd6926324f023a65f20c165232891"
SRCREV_pn-tidy ??= "e25416e1293e1074bfa6727c80527dcff5b1f3cb"
SRCREV_pn-settings-daemon ??= "2059"
SRCREV_pn-ubootchart ??= "10"

21
meta/packages/trace-cmd/trace-cmd_git.bb Normal file
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@ -0,0 +1,21 @@
DESCRIPTION = "User interface to Ftrace"
LICENSE = "GPL"
LIC_FILES_CHKSUM = "file://COPYING;md5=751419260aa954499f7abaabaa882bbe"
DEPENDS = "glibc"
PR = r0
PV = "1.0.4+git${SRCPV}"
SRC_URI = "git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git;protocol=git"
S = "${WORKDIR}/git"
do_compile() {
oe_runmake ARCH="${ARCH}" CC="${CC}" LD="${LD}" prefix=${prefix}
}
do_install() {
oe_runmake ARCH="${ARCH}" CC="${CC}" LD="${LD}" \
prefix=${prefix} DESTDIR=${D} install
}