Add comprehensive support for gperftools CPU profiler to enable performance
profiling of Falco. This commit introduces:
- New CMake options:
* USE_GPERFTOOLS: Enable gperftools CPU profiler support (default: OFF)
* USE_FRAME_POINTER: Enable frame pointers for accurate profiling (default: OFF)
- Automatic frame pointer enabling: When USE_GPERFTOOLS is enabled, frame
pointers are automatically enabled to ensure accurate stack traces in
profiling output.
- Support for both system and bundled gperftools:
* System gperftools: Automatically detected via find_path/find_library
* Bundled gperftools: Built from source (version 2.15) when
USE_BUNDLED_GPERFTOOLS is enabled
- Enhanced stack trace support: Automatically detects and enables libunwind
when available for better stack traces, falling back to frame pointers
otherwise.
- Proper library linking: Uses --whole-archive linker flags to ensure
profiler initialization code is linked even when ProfilerStart() is not
called directly, enabling CPUPROFILE environment variable support.
- Compile-time detection: Adds HAS_GPERFTOOLS preprocessor definition
for conditional compilation.
The profiler can be activated at runtime by setting the CPUPROFILE
environment variable to a file path where profiling data should be written.
Usage:
cmake -DUSE_GPERFTOOLS=ON ..
make
CPUPROFILE=/tmp/falco.prof ./falco
Signed-off-by: irozzo-1A <iacopo@sysdig.com>
Falco 0.43.0 deprecated the gRPC output and server supports. Drop
their supports as well as any reference to them.
BREAKING CHANGE: drop gRPC output and server support
Signed-off-by: Leonardo Di Giovanna <leonardodigiovanna1@gmail.com>
Falco 0.43.0 deprecated the gVisor engine support. Drop its support as
well as any reference to it.
BREAKING CHANGE: drop gVisor engine support
Signed-off-by: Leonardo Di Giovanna <leonardodigiovanna1@gmail.com>
Falco 0.43.0 deprecated the legacy eBPF probe. Drop it as well as any
reference to it.
BREAKING CHANGE: drop legacy eBPF probe
Signed-off-by: Leonardo Di Giovanna <leonardodigiovanna1@gmail.com>
Starting from Falco 0.40, the `falco --help` output incorrectly showed
the source config path (e.g., /home/runner/work/falco/falco/falco.yaml)
in release packages. This path was intended only for local development.
The issue was introduced when RelWithDebInfo build type support was
added (commit 6bf33ffd). The existing code checked for BUILD_TYPE_RELEASE
to determine release behavior, but RelWithDebInfo builds defined
BUILD_TYPE_RELWITHDEBINFO instead, causing them to fall into the
debug code path.
This fix introduces BUILD_TYPE_DEBUG and changes the conditionals to
enable dev features only when CMAKE_BUILD_TYPE is explicitly "debug".
Both Release and RelWithDebInfo builds now correctly show only
/etc/falco/falco.yaml.
Fixes the regression introduced in 0.40.0
Signed-off-by: Leonardo Grasso <me@leonardograsso.com>
The previously used driver version was already the `9.1.0+driver`:
simply replace the commit SHA with the release name.
Signed-off-by: Leonardo Di Giovanna <leonardodigiovanna1@gmail.com>
This change adds a defensive null check before accessing state.outputs->get_outputs_queue_num_drops() to prevent segfaults if outputs is destroyed while metrics are being collected.
Signed-off-by: Adnan Ali <adduali1310@hotmail.com>
