diff mbox series

[v2,2/2] modules: generates per-target modinfo

Message ID 20210927141201.21833-4-jziviani@suse.de (mailing list archive)
State New, archived
Headers show
Series modules: Improve modinfo.c support | expand

Commit Message

Jose R. Ziviani Sept. 27, 2021, 2:12 p.m. UTC
This patch changes the way modinfo is generated and built. Today we have
only modinfo.c being genereated and linked to all targets, now it
generates (and link) one modinfo per target.

It also makes use of the module_need to add modules that makes sense for
the selected target.

Signed-off-by: Jose R. Ziviani <jziviani@suse.de>
---
 meson.build                 | 25 +++++++++++++++--------
 scripts/modinfo-generate.py | 40 +++++++++++++++++++++----------------
 2 files changed, 40 insertions(+), 25 deletions(-)
diff mbox series

Patch

diff --git a/meson.build b/meson.build
index 2711cbb789..9d25ebb2f9 100644
--- a/meson.build
+++ b/meson.build
@@ -2395,14 +2395,23 @@  foreach d, list : target_modules
 endforeach
 
 if enable_modules
-  modinfo_src = custom_target('modinfo.c',
-                              output: 'modinfo.c',
-                              input: modinfo_files,
-                              command: [modinfo_generate, '@INPUT@'],
-                              capture: true)
-  modinfo_lib = static_library('modinfo', modinfo_src)
-  modinfo_dep = declare_dependency(link_whole: modinfo_lib)
-  softmmu_ss.add(modinfo_dep)
+  foreach target : target_dirs
+    if target.endswith('-softmmu')
+      config_target = config_target_mak[target]
+      config_devices_mak = target + '-config-devices.mak'
+      modinfo_src = custom_target('modinfo-' + target + '.c',
+                                  output: 'modinfo-' + target + '.c',
+                                  input: modinfo_files,
+                                  command: [modinfo_generate, '--devices', config_devices_mak, '@INPUT@'],
+                                  capture: true)
+
+      modinfo_lib = static_library('modinfo-' + target + '.c', modinfo_src)
+      modinfo_dep = declare_dependency(link_with: modinfo_lib)
+
+      arch = config_target['TARGET_NAME'] == 'sparc64' ? 'sparc64' : config_target['TARGET_BASE_ARCH']
+      hw_arch[arch].add(modinfo_dep)
+    endif
+  endforeach
 endif
 
 nm = find_program('nm')
diff --git a/scripts/modinfo-generate.py b/scripts/modinfo-generate.py
index 9d3e037b15..25fb241b2d 100755
--- a/scripts/modinfo-generate.py
+++ b/scripts/modinfo-generate.py
@@ -32,7 +32,7 @@  def parse_line(line):
             continue
     return (kind, data)
 
-def generate(name, lines):
+def generate(name, lines, core_modules):
     arch = ""
     objs = []
     deps = []
@@ -49,7 +49,11 @@  def generate(name, lines):
             elif kind == 'arch':
                 arch = data;
             elif kind == 'need':
-                pass # ignore
+                # don't add a module which dependency is not enabled
+                # in kconfig
+                if data.strip() not in core_modules:
+                    print("    /* module {} is missing. */\n".format(data))
+                    return []
             else:
                 print("unknown:", kind)
                 exit(1)
@@ -60,7 +64,7 @@  def generate(name, lines):
     print_array("objs", objs)
     print_array("deps", deps)
     print_array("opts", opts)
-    print("},{");
+    print("},{")
     return deps
 
 def print_pre():
@@ -74,26 +78,28 @@  def print_post():
     print("}};")
 
 def main(args):
+    if len(args) < 3 or args[0] != '--devices':
+        print('Expected: modinfo-generate.py --devices '
+              'config-device.mak [modinfo files]', file=sys.stderr)
+        exit(1)
+
+    # get all devices enabled in kconfig, from *-config-device.mak
+    enabled_core_modules = set()
+    with open(args[1]) as file:
+        for line in file.readlines():
+            config = line.split('=')
+            if config[1].rstrip() == 'y':
+                enabled_core_modules.add(config[0][7:]) # remove CONFIG_
+
     deps = {}
     print_pre()
-    for modinfo in args:
+    for modinfo in args[2:]:
         with open(modinfo) as f:
             lines = f.readlines()
         print("    /* %s */" % modinfo)
-        (basename, ext) = os.path.splitext(modinfo)
-        deps[basename] = generate(basename, lines)
+        (basename, _) = os.path.splitext(modinfo)
+        deps[basename] = generate(basename, lines, enabled_core_modules)
     print_post()
 
-    flattened_deps = {flat.strip('" ') for dep in deps.values() for flat in dep}
-    error = False
-    for dep in flattened_deps:
-        if dep not in deps.keys():
-            print("Dependency {} cannot be satisfied".format(dep),
-                  file=sys.stderr)
-            error = True
-
-    if error:
-        exit(1)
-
 if __name__ == "__main__":
     main(sys.argv[1:])