blob: e307361f9890f2571b6b7558b149d2b63d3e6027 (
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|
{ lib, pkgs, ... }:
let
tracing = name: "\"/sys/kernel/debug/tracing/${name}\"";
in
{
environment.systemPackages = [
(pkgs.writeShellScriptBin "hakurei-set-up-tracing" ''
set -e
echo "$1" > ${tracing "set_graph_function"}
echo function_graph > ${tracing "current_tracer"}
echo funcgraph-tail > ${tracing "trace_options"}
echo funcgraph-retval > ${tracing "trace_options"}
echo nofuncgraph-cpu > ${tracing "trace_options"}
echo nofuncgraph-overhead > ${tracing "trace_options"}
echo nofuncgraph-duration > ${tracing "trace_options"}
'')
(pkgs.writeShellScriptBin "hakurei-print-trace" "exec cat ${tracing "trace"}")
(pkgs.writeShellScriptBin "hakurei-consume-trace" "exec cat ${tracing "trace_pipe"}")
];
boot.kernelPatches = [
{
name = "funcgraph-retval";
patch = null;
structuredExtraConfig.FUNCTION_GRAPH_RETVAL = lib.kernel.yes;
}
];
}
|
