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1445ac1b93
Rather than checking if the trace_marker file in sysfs exists and then immediately proceeding to open it, we can just try to open it and handle the resulting error if it doesn't exist. Additionally, log the filename if the file can't be opened to make the debugging process easier. BUG=b:256052372 TEST=cargo build --features=trace_marker Change-Id: I117324b0903afdbd351d03a18755321cacf1f42c Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4262323 Commit-Queue: Daniel Verkamp <dverkamp@chromium.org> Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org> |
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