Hello:

This series was applied to bpf/bpf-next.git (refs/heads/master):

On Wed, 14 Jul 2021 17:54:06 -0700 you wrote:

From: Alexei Starovoitov <ast@kernel.org>

The first request to support timers in bpf was made in 2013 before sys_bpf syscall
was added. That use case was periodic sampling. It was address with attaching
bpf programs to perf_events. Then during XDP development the timers were requested
to do garbage collection and health checks. They were worked around by implementing
timers in user space and triggering progs with BPF_PROG_RUN command.
The user space timers and perf_event+bpf timers are not armed by the bpf program.
They're done asynchronously vs program execution. The XDP program cannot send a
packet and arm the timer at the same time. The tracing prog cannot record an
event and arm the timer right away. This large class of use cases remained
unaddressed. The jiffy based and hrtimer based timers are essential part of the
kernel development and with this patch set the hrtimer based timers will be
available to bpf programs.

[...]

Here is the summary with links:
  - [v7,bpf-next,01/11] bpf: Prepare bpf_prog_put() to be called from irq context.
    https://git.kernel.org/bpf/bpf-next/c/d809e134be7a
  - [v7,bpf-next,02/11] bpf: Factor out bpf_spin_lock into helpers.
    https://git.kernel.org/bpf/bpf-next/c/c1b3fed319d3
  - [v7,bpf-next,03/11] bpf: Introduce bpf timers.
    https://git.kernel.org/bpf/bpf-next/c/b00628b1c7d5
  - [v7,bpf-next,04/11] bpf: Add map side support for bpf timers.
    https://git.kernel.org/bpf/bpf-next/c/68134668c17f
  - [v7,bpf-next,05/11] bpf: Prevent pointer mismatch in bpf_timer_init.
    https://git.kernel.org/bpf/bpf-next/c/3e8ce29850f1
  - [v7,bpf-next,06/11] bpf: Remember BTF of inner maps.
    https://git.kernel.org/bpf/bpf-next/c/40ec00abf1cc
  - [v7,bpf-next,07/11] bpf: Relax verifier recursion check.
    https://git.kernel.org/bpf/bpf-next/c/86fc6ee6e246
  - [v7,bpf-next,08/11] bpf: Implement verifier support for validation of async callbacks.
    https://git.kernel.org/bpf/bpf-next/c/bfc6bb74e4f1
  - [v7,bpf-next,09/11] bpf: Teach stack depth check about async callbacks.
    https://git.kernel.org/bpf/bpf-next/c/7ddc80a476c2
  - [v7,bpf-next,10/11] selftests/bpf: Add bpf_timer test.
    https://git.kernel.org/bpf/bpf-next/c/3540f7c6b96a
  - [v7,bpf-next,11/11] selftests/bpf: Add a test with bpf_timer in inner map.
    https://git.kernel.org/bpf/bpf-next/c/61f71e746c72

You are awesome, thank you!
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