T7423: Add kernel boot options isolcpus, hugepages, numa_balancing

Add kernel options which apply during the boot:
 - isolcpus
 - nohz_full
 - rcu_nocbs
 - default_hugepagesz
 - hugepages
 - hugepagesz
 - numa_balancing
 - hpet
 - mce
 - nosoftlockup
 - nmi_watchdog

CLI:

```
set system option kernel cpu disable-nmi-watchdog
set system option kernel cpu isolate-cpus '1,2,4-5'
set system option kernel cpu nohz-full '1,2,4-5'
set system option kernel cpu rcu-no-cbs '1,2,4-5'
set system option kernel disable-hpet
set system option kernel disable-mce
set system option kernel disable-softlockup
set system option kernel memory default-hugepage-size '2M'
set system option kernel memory disable-numa-balancing
set system option kernel memory hugepage-size 1G hugepage-count '2'
set system option kernel memory hugepage-size 2M hugepage-count '512'
```

1 files changed, 45 insertions, 0 deletions

diff --git a/src/conf_mode/system_option.py b/src/conf_mode/system_option.py
index 3d76a1eaa..5acad6599 100755
--- a/src/conf_mode/system_option.py
+++ b/src/conf_mode/system_option.py
@@ -127,6 +127,9 @@ def generate(options):
     # occurance is used for having the appropriate options passed to GRUB
     # when re-configuring options on the CLI.
     cmdline_options = []
+    kernel_opts = options.get('kernel', {})
+    k_cpu_opts = kernel_opts.get('cpu', {})
+    k_memory_opts = kernel_opts.get('memory', {})
     if 'kernel' in options:
         if 'disable_mitigations' in options['kernel']:
             cmdline_options.append('mitigations=off')
@@ -138,6 +141,48 @@ def generate(options):
                 f'initcall_blacklist=acpi_cpufreq_init amd_pstate={mode}')
         if 'quiet' in options['kernel']:
             cmdline_options.append('quiet')
+
+    if 'disable_hpet' in kernel_opts:
+        cmdline_options.append('hpet=disable')
+
+    if 'disable_mce' in kernel_opts:
+        cmdline_options.append('mce=off')
+
+    if 'disable_softlockup' in kernel_opts:
+        cmdline_options.append('nosoftlockup')
+
+    # CPU options
+    isol_cpus = k_cpu_opts.get('isolate_cpus')
+    if isol_cpus:
+        cmdline_options.append(f'isolcpus={isol_cpus}')
+
+    nohz_full = k_cpu_opts.get('nohz_full')
+    if nohz_full:
+        cmdline_options.append(f'nohz_full={nohz_full}')
+
+    rcu_nocbs = k_cpu_opts.get('rcu_no_cbs')
+    if rcu_nocbs:
+        cmdline_options.append(f'rcu_nocbs={rcu_nocbs}')
+
+    if 'disable_nmi_watchdog' in k_cpu_opts:
+        cmdline_options.append('nmi_watchdog=0')
+
+    # Memory options
+    if 'disable_numa_balancing' in k_memory_opts:
+        cmdline_options.append('numa_balancing=disable')
+
+    default_hp_size = k_memory_opts.get('default_hugepage_size')
+    if default_hp_size:
+        cmdline_options.append(f'default_hugepagesz={default_hp_size}')
+
+    hp_sizes = k_memory_opts.get('hugepage_size')
+    if hp_sizes:
+        for size, settings in hp_sizes.items():
+            cmdline_options.append(f'hugepagesz={size}')
+            count = settings.get('hugepage_count')
+            if count:
+                cmdline_options.append(f'hugepages={count}')
+
     grub_util.update_kernel_cmdline_options(' '.join(cmdline_options))
 
     return None