new tool wakesnoop

[makelinux]

wakesnoop attaches to scheduler tracepoints sched_waking and sched_wakeup, and measures delay of wakeup.

[ajor]

Thanks for the contribution - I'm sure we will be merging it at some point soon.

I'm just putting a temporary block on it while we have a discussion about licences for this new repository.

[ajor]

Sorry for the delay in getting back to you. We should have sorted out our contribution guidelines before opening up this repository, but I think we're almost there now.

We're going to request that new scripts be licensed under a GPLv2-compatible license so that they are able to use the full BPF functionality by calling into GPL-only functions in the Linux kernel.

The list of accepted licenses is described in the kernel docs here: https://docs.kernel.org/process/license-rules.html#id1

• GPL v2
• Dual MIT/GPL v2
• Dual BSD/GPL v2
• Dual MPL/GPL v2

We're also going to start using SPDX identifiers to avoid large license boilerplate. An example would be:

// SPDX-License-Identifier: GPL-2.0-or-later

or:

// SPDX-License-Identifier: MIT OR GPL-2.0-or-later