lib/trace_parser: map/unmap the trace file

Copied code responsible for mapping/unmapping the trace file. The
only modifications were related with tying it to the spdk_trace_parser
object.

Signed-o

lib/trace_parser: map/unmap the trace file

Copied code responsible for mapping/unmapping the trace file. The
only modifications were related with tying it to the spdk_trace_parser
object.

Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: Ia575101532c612b185bd971c69157623b52b9e81
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9429
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>

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lib/trace_parser: add trace_parser library stubs

This library will provide functions that parse traces recorded by an
SPDK application. This includes merging traces from multiple cores,
sorting the

lib/trace_parser: add trace_parser library stubs

This library will provide functions that parse traces recorded by an
SPDK application. This includes merging traces from multiple cores,
sorting them by their timestamp and constructing trace entries spanning
across multiple buffers. All of these tasks are currently implemented
in the spdk_trace app, so most of its code will be moved here (this is
the reason for using C++).

The motivation for extracting this code to a library is to be able to
use it from places other than the spdk_trace app, specifically the
`scripts/bpf/trace.py` script.

The main reason for creating a separate library instead of extending
libtrace is to avoid pulling in all of its dependencies. ISA-L is the
most problematic, as we only build it as a static library, which makes
it impossible to use with dlopen (making it unusable in scripts).

Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: If101ca3425d7404abd51b0da2031358d0be44766
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9428
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>

show more ...