Fix perf detection

Previously we always returned false as an error was thrown when trying to run the code in the try block

Author: Zentrik

src/parameters.jl

@@ -19,16 +19,18 @@ mutable struct Parameters
     linux_perf_options::@NamedTuple{events::Expr, spaces::Expr, threads::Bool}
 end
 
+const DEFAULT_LINUX_PERF_OPTIONS = LinuxPerf.parse_pstats_options([])
+
 function perf_available()
     if !Sys.islinux()
         return false
     end
 
     bench = nothing
     try
-        opts = LinuxPerf.parse_pstats_options([])
-        groups = BenchmarkTools.LinuxPerf.set_default_spaces(opts.events, opts.spaces)
-        bench = make_bench_threaded(groups; threads=opts.threads)
+        opts = DEFAULT_LINUX_PERF_OPTIONS
+        groups = LinuxPerf.set_default_spaces(eval(opts.events), eval(opts.spaces))
+        bench = LinuxPerf.make_bench_threaded(groups, threads = eval(opts.threads))
         return true
     catch
         return false
@@ -50,7 +52,7 @@ const DEFAULT_PARAMETERS = Parameters(
     0.05,
     0.01,
     perf_available(),
-    LinuxPerf.parse_pstats_options([]),
+    DEFAULT_LINUX_PERF_OPTIONS,
 )
 
 function Parameters(;