diff options
| author | Ross Zwisler <zwisler@chromium.org> | 2023-02-15 15:33:49 -0700 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-06-09 12:08:08 -0400 |
| commit | 07496eeab577eef1d4912b3e1b502a2b52002ac3 (patch) | |
| tree | 4ec428503f85cdd444147505e0d43861e47098d2 /tools/virtio/virtio-trace/README | |
| parent | beee7fdb5b56a46415a4992d28dd4c2d06eb52df (diff) | |
tools/virtio: use canonical ftrace path
The canonical location for the tracefs filesystem is at /sys/kernel/tracing.
But, from Documentation/trace/ftrace.rst:
Before 4.1, all ftrace tracing control files were within the debugfs
file system, which is typically located at /sys/kernel/debug/tracing.
For backward compatibility, when mounting the debugfs file system,
the tracefs file system will be automatically mounted at:
/sys/kernel/debug/tracing
A few spots in tools/virtio still refer to this older debugfs
path, so let's update them to avoid confusion.
Signed-off-by: Ross Zwisler <zwisler@google.com>
Message-Id: <20230215223350.2658616-6-zwisler@google.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com>
Diffstat (limited to 'tools/virtio/virtio-trace/README')
| -rw-r--r-- | tools/virtio/virtio-trace/README | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/virtio/virtio-trace/README b/tools/virtio/virtio-trace/README index 4fb9368bf751..0127ff0c54b0 100644 --- a/tools/virtio/virtio-trace/README +++ b/tools/virtio/virtio-trace/README @@ -95,7 +95,7 @@ Run 1) Enable ftrace in the guest <Example> - # echo 1 > /sys/kernel/debug/tracing/events/sched/enable + # echo 1 > /sys/kernel/tracing/events/sched/enable 2) Run trace agent in the guest This agent must be operated as root. |