tcp: debugging patch to warn if timer set for 0 jiffies in the future

[ Testing fix for the patch series in b/308472523 / b/308151197
  Any code path that sets a timer for 0 jiffies into the future runs a
  risk of busy-looping for long periods, which would match the
  symptoms of the traces in b/308472523 ... ]

Google-Bug-Id: 308151197
Change-Id: I1e15042ec858308d1274880446d71822053e3415
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/61182
Tested-by: Brian Vazquez <brianvv@google.com>
Reviewed-by: Brian Vazquez <brianvv@google.com>
1 file changed