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userspace: add kobject flag for drivers

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This new flag will indicate that the kernel object represents
an instance of a device driver object.

Fixes: #14037

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2019-07-23 13:29:30 -07:00 • committed by Carles Cufí
commit 7875707a98
2 changed files with 9 additions and 5 deletions
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1
include/kernel.h
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@ -195,6 +195,7 @@ struct _k_object_assignment {
#define K_OBJ_FLAG_INITIALIZED BIT(0) #define K_OBJ_FLAG_INITIALIZED BIT(0)
#define K_OBJ_FLAG_PUBLIC BIT(1) #define K_OBJ_FLAG_PUBLIC BIT(1)
#define K_OBJ_FLAG_ALLOC BIT(2) #define K_OBJ_FLAG_ALLOC BIT(2)
#define K_OBJ_FLAG_DRIVER BIT(3)
/** /**
* Lookup a kernel object and init its metadata if it exists * Lookup a kernel object and init its metadata if it exists

13
scripts/gen_kobject_list.py
View file

@ -196,6 +196,7 @@ def write_gperf_table(fp, eh, objs, static_begin, static_end):
# either completely initialized at build time, or done automatically # either completely initialized at build time, or done automatically
# at boot during some PRE_KERNEL_* phase # at boot during some PRE_KERNEL_* phase
initialized = obj_addr >= static_begin and obj_addr < static_end initialized = obj_addr >= static_begin and obj_addr < static_end
is_driver = obj_type.startswith("K_OBJ_DRIVER_")
byte_str = struct.pack("<I" if eh.little_endian else ">I", obj_addr) byte_str = struct.pack("<I" if eh.little_endian else ">I", obj_addr)
fp.write("\"") fp.write("\"")
@ -203,11 +204,13 @@ def write_gperf_table(fp, eh, objs, static_begin, static_end):
val = "\\x%02x" % byte val = "\\x%02x" % byte
fp.write(val) fp.write(val)
fp.write( flags = "0"
"\",{},%s,%s,%s\n" % if (initialized):
(obj_type, flags += " | K_OBJ_FLAG_INITIALIZED"
"K_OBJ_FLAG_INITIALIZED" if initialized else "0", if (is_driver):
str(ko.data))) flags += " | K_OBJ_FLAG_DRIVER"
fp.write("\", {}, %s, %s, %s\n" % (obj_type, flags, str(ko.data)))
if obj_type == "K_OBJ_THREAD": if obj_type == "K_OBJ_THREAD":
idx = math.floor(ko.data / 8) idx = math.floor(ko.data / 8)