package: Add support for kernel stripping

Extend runstrip() to accept additional argument to enable
sharing it with the kernel do_strip() so that
KERNEL_IMAGE_STRIP_EXTRA_SECTIONS can be passed.

Since is_elf() understands kernel modules there is no need to keep a
seperate list for kernmodules or hardcode the values to runstrip.

(From OE-Core rev: e09a8fa931fe617afc05bd5e00dca5dd3fe386e8)

Signed-off-by: Saul Wold <saul.wold@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/package.bbclass

@@ -390,10 +390,6 @@ def splitdebuginfo(file, dvar, debugdir, debuglibdir, debugappend, debugsrcdir,
     dvar = d.getVar('PKGD')
     objcopy = d.getVar("OBJCOPY")
 
-    # We ignore kernel modules, we don't generate debug info files.
-    if file.find("/lib/modules/") != -1 and file.endswith(".ko"):
-        return (file, sources)
-
     newmode = None
     if not os.access(file, os.W_OK) or os.access(file, os.R_OK):
         origmode = os.stat(file)[stat.ST_MODE]
@@ -1122,7 +1118,6 @@ python split_and_strip_files () {
     #
     elffiles = {}
     symlinks = {}
-    kernmods = []
     staticlibs = []
     inodes = {}
     libdir = os.path.abspath(dvar + os.sep + d.getVar("libdir"))
@@ -1145,9 +1140,6 @@ python split_and_strip_files () {
                 if file in skipfiles:
                     continue
 
-                if file.endswith(".ko") and file.find("/lib/modules/") != -1:
-                    kernmods.append(file)
-                    continue
                 if oe.package.is_static_lib(file):
                     staticlibs.append(file)
                     continue
@@ -1164,8 +1156,11 @@ python split_and_strip_files () {
                 if not s:
                     continue
                 # Check its an executable
-                if (s[stat.ST_MODE] & stat.S_IXUSR) or (s[stat.ST_MODE] & stat.S_IXGRP) or (s[stat.ST_MODE] & stat.S_IXOTH) \
-                        or ((file.startswith(libdir) or file.startswith(baselibdir)) and (".so" in f or ".node" in f)):
+                if (s[stat.ST_MODE] & stat.S_IXUSR) or (s[stat.ST_MODE] & stat.S_IXGRP) \
+                        or (s[stat.ST_MODE] & stat.S_IXOTH) \
+                        or ((file.startswith(libdir) or file.startswith(baselibdir)) \
+                        and (".so" in f or ".node" in f)) \
+                        or (f.startswith('vmlinux') or ".ko" in f):
 
                     if cpath.islink(file):
                         checkelflinks[file] = ltarget
@@ -1312,8 +1307,6 @@ python split_and_strip_files () {
             elf_file = int(elffiles[file])
             #bb.note("Strip %s" % file)
             sfiles.append((file, elf_file, strip))
-        for f in kernmods:
-            sfiles.append((f, 16, strip))
         if (d.getVar('PACKAGE_STRIP_STATIC') == '1' or d.getVar('PACKAGE_DEBUG_STATIC_SPLIT') == '1'):
             for f in staticlibs:
                 sfiles.append((f, 16, strip))

meta/lib/oe/package.py

@@ -16,7 +16,11 @@ def runstrip(arg):
     # 8 - shared library
     # 16 - kernel module
 
-    (file, elftype, strip) = arg
+    if len(arg) == 3:
+        (file, elftype, strip) = arg
+        extra_strip_sections = ''
+    else:
+        (file, elftype, strip, extra_strip_sections) = arg
 
     newmode = None
     if not os.access(file, os.W_OK) or os.access(file, os.R_OK):
@@ -40,6 +44,9 @@ def runstrip(arg):
     # shared or executable:
     elif elftype & 8 or elftype & 4:
         stripcmd.extend(["--remove-section=.comment", "--remove-section=.note"])
+        if extra_strip_sections != '':
+            for section in extra_strip_sections.split():
+                stripcmd.extend(["--remove-section=" + section])
 
     stripcmd.append(file)
     bb.debug(1, "runstrip: %s" % stripcmd)