Added command line option --no-cpu

CHANGELOG.md

@@ -1,7 +1,8 @@
 # v4.0.2-beta
 - [#1183](https://github.com/xmrig/xmrig/issues/1183) Fixed compatibility with systemd.
 - [#1185](https://github.com/xmrig/xmrig/pull/1185) Added JIT compiler for RandomX on ARMv8.
-- Command line option `--http-enabled` removed, HTTP API enabled automatically if any other `--http-*` option provided.
+- Added command line option `--no-cpu` to disable CPU backend.
+- Removed command line option `--http-enabled`, HTTP API enabled automatically if any other `--http-*` option provided.
 
 # v4.0.1-beta
 - [#1177](https://github.com/xmrig/xmrig/issues/1177) Fixed compatibility with old AMD drivers.

src/core/config/ConfigTransform.cpp

@@ -118,6 +118,7 @@ void xmrig::ConfigTransform::transform(rapidjson::Document &doc, int key, const
         return transformUint64(doc, key, static_cast<uint64_t>(strtol(arg, nullptr, 10)));
 
     case IConfig::HugePagesKey: /* --no-huge-pages */
+    case IConfig::CPUKey:       /* --no-cpu */
         return transformBoolean(doc, key, false);
 
     case IConfig::CPUAffinityKey: /* --cpu-affinity */
@@ -151,6 +152,9 @@ void xmrig::ConfigTransform::transformBoolean(rapidjson::Document &doc, int key,
     case IConfig::HugePagesKey: /* --no-huge-pages */
         return set(doc, kCpu, "huge-pages", enable);
 
+    case IConfig::CPUKey:       /* --no-cpu */
+        return set(doc, kCpu, "enabled", enable);
+
     default:
         break;
     }

src/core/config/Config_platform.h

@@ -80,6 +80,7 @@ static const option options[] = {
     { "user-agent",            1, nullptr, IConfig::UserAgentKey          },
     { "userpass",              1, nullptr, IConfig::UserpassKey           },
     { "rig-id",                1, nullptr, IConfig::RigIdKey              },
+    { "no-cpu",                0, nullptr, IConfig::CPUKey                },
 #   ifdef XMRIG_FEATURE_TLS
     { "tls",                   0, nullptr, IConfig::TlsKey                },
     { "tls-fingerprint",       1, nullptr, IConfig::FingerprintKey        },

src/core/config/usage.h

@@ -71,6 +71,7 @@ static inline const std::string &usage()
 
     u += "\nCPU backend:\n";
 
+    u += "      --no-cpu                  disable CPU backend\n";
     u += "  -t, --threads=N               number of CPU threads\n";
     u += "  -v, --av=N                    algorithm variation, 0 auto select\n";
     u += "      --cpu-affinity            set process affinity to CPU core(s), mask 0x3 for cores 0 and 1\n";