Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
21 lines
894 B
Plaintext
21 lines
894 B
Plaintext
What: /sys/kernel/debug/tracing
|
|
Date: May 2008
|
|
KernelVersion: 2.6.27
|
|
Contact: linux-trace-kernel@vger.kernel.org
|
|
Description:
|
|
|
|
The ftrace was first added to the kernel, its interface was placed
|
|
into the debugfs file system under the "tracing" directory. Access
|
|
to the files were in /sys/kernel/debug/tracing. As systems wanted
|
|
access to the tracing interface without having to enable debugfs, a
|
|
new interface was created called "tracefs". This was a stand alone
|
|
file system and was usually mounted in /sys/kernel/tracing.
|
|
|
|
To allow older tooling to continue to operate, when mounting
|
|
debugfs, the tracefs file system would automatically get mounted in
|
|
the "tracing" directory of debugfs. The tracefs interface was added
|
|
in January 2015 in the v4.1 kernel.
|
|
|
|
All tooling should now be using tracefs directly and the "tracing"
|
|
directory in debugfs should be removed by January 2030.
|