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| author | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-09-29 17:27:48 -0400 |
|---|---|---|
| committer | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-09-29 17:27:48 -0400 |
| commit | fcb74dfd32442af859ac45979138b40279f96553 (patch) | |
| tree | 4a761e08eded02f680e5c0ece2e9bf634515f08c /tools/guest-diag/pin_gr_stream.py | |
| parent | c903aac3e45a1634764389cd57b7d195b5c895b4 (diff) | |
| download | open-iov-fcb74dfd32442af859ac45979138b40279f96553.tar.gz open-iov-fcb74dfd32442af859ac45979138b40279f96553.zip | |
guest-diag: stream uvbp pushbuffer kptrs for immediate pinning
The first CE channel's push-buffer was only pinned ~1 minute after the
client's failure: uvbp fired at t+4s but semfix's trace read (guest agent,
every 5 loops) picked it up at t+70s, so the tracker wait for value 3 spun
for 16 s. The guest scanner now emits '#pb 0x<kptr>' from the uvbp trace
lines as soon as they appear; the host mirrors them into the sem stream and
semfix resolves/pins the push-buffer through the UVM chain on the next loop
(sub-second).
Diffstat (limited to 'tools/guest-diag/pin_gr_stream.py')
| -rw-r--r-- | tools/guest-diag/pin_gr_stream.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/guest-diag/pin_gr_stream.py b/tools/guest-diag/pin_gr_stream.py index b80d30a..fbe2ee5 100644 --- a/tools/guest-diag/pin_gr_stream.py +++ b/tools/guest-diag/pin_gr_stream.py @@ -134,6 +134,9 @@ def main(): if text.startswith("#sem"): _mirror(text) continue + if text.startswith("#pb"): + _mirror(text) + continue m = re.match(r"^(0x[0-9a-f]+),(0x[0-9a-f]+)(?:,(\d+))?$", text) if m: runs.append((int(m.group(1), 16), int(m.group(2), 16), |