[PATCH v2 0/3] reboot: log the task that initiated

When a machine reboots, powers off, kexecs or hibernates, the kernel
log records what happened but not who asked for it. This series logs
the comm and pid of the initiating task once the transition is
committed:

  reboot: initiated by systemd-shutdow[1]
  reboot: Restarting system

Patch 1 covers the restart, halt and power off commands of the
reboot syscall. Patches 2 and 3 give kexec and the hibernation power
down the same treatment at their own points of no return, as
suggested in the v1 review [1]. The kexec and PM maintainers are on
cc for their input on those two.

v1 -> v2:
- Reworded the justification in patch 1: dropped the fleet operator
  claim and spelled out the concrete gap in userspace logging
- New patch 2: log the initiator for kexec reboots
- New patch 3: log the initiator for the hibernation power down
- Added the kexec and PM maintainers and lists to cc

[1] https://lore.kernel.org/all/[email protected]/

Bradley Morgan (3):
  reboot: log the task that initiated the reboot
  kexec: log the task that initiated the kexec reboot
  PM: hibernate: log the task that initiated the power down

 include/linux/reboot.h   |  1 +
 kernel/kexec_core.c      |  1 +
 kernel/power/hibernate.c |  2 ++
 kernel/reboot.c          | 16 ++++++++++++++++
 4 files changed, 20 insertions(+)

-- 
2.50.1