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>
These should be written as ChromeOS and ChromiumOS (without the space)
to match the updated branding. The copyright headers were already
migrated to the new style (https://crrev.com/c/3894243), but there were
some more instances left over.
BUG=None
TEST=tools/cargo-doc
Change-Id: I8c76aea2eb33b2e370ab71ee9b5cc0a4cfd00585
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4129934
Reviewed-by: Dennis Kempin <denniskempin@google.com>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
This CL adds a new backend for the cros_tracing crate. This backend can
be enabled by building crosvm with the trace_marker feature enabled.
When the feature is not enabled, no extra overhead incurs as the default
NOOP cros_tracing crate will be compiled in instead.
BUG=b:259501910
TEST=compiled and ran crosvm with and without `--features trace_marker`
Change-Id: Ia4b929b042712a458b7d54c0362d6fda90db9e9f
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4075413
Reviewed-by: Christian Blichmann <cblichmann@google.com>
Auto-Submit: Morg <morg@chromium.org>
Commit-Queue: Morg <morg@chromium.org>
Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
`tracing` conflicts with a crates.io crate. Since we may support tokio
tracing in the future, and want to submit some benchmarks against it
right now, we should rename our crate.
BUG=b:253517247
TEST=presubmit
Change-Id: I32bf64a7ce1830e881bd582e4606932782df65c6
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3957598
Reviewed-by: Alexandre Courbot <acourbot@chromium.org>
Reviewed-by: Vikram Auradkar <auradkar@google.com>
Commit-Queue: Noah Gold <nkgold@google.com>
