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qconfig: Allow searching for CONFIG values

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Add basic support for searching for matching of non-matching values.

Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: https://source.denx.de/u-boot/custodians/u-boot-dm/-/issues/20
This commit is contained in:
Simon Glass
2024-07-18 10:11:23 +01:00
parent 9366640449
commit 7ff80ece21
2 changed files with 25 additions and 4 deletions
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14
doc/develop/qconfig.rst
View File

@@ -85,6 +85,20 @@ example, to find boards which enabled CONFIG_SCSI but not CONFIG_BLK::
3 matches 3 matches
pg_wcom_seli8_defconfig highbank_defconfig pg_wcom_expu1_defconfig pg_wcom_seli8_defconfig highbank_defconfig pg_wcom_expu1_defconfig
It is also possible to search for particular values. For example, this finds all
boards with an empty string for `CONFIG_DEFAULT_FDT_FILE`::
./tools/qconfig.py -f DEFAULT_FDT_FILE=\"\"
1092 matches
...
This finds boards which have a value for SYS_MAXARGS other than 64::
./tools/qconfig.py -f ~SYS_MAXARGS=64
cfg CONFIG_SYS_MAXARGS
281 matches
...
Finding implied CONFIGs Finding implied CONFIGs
----------------------- -----------------------

13
tools/qconfig.py
View File

@@ -1079,7 +1079,7 @@ def do_imply_config(config_list, add_imply, imply_flags, skip_added,
for linenum in sorted(linenums, reverse=True): for linenum in sorted(linenums, reverse=True):
add_imply_rule(config[CONFIG_LEN:], fname, linenum) add_imply_rule(config[CONFIG_LEN:], fname, linenum)
def defconfig_matches(configs, re_match): def defconfig_matches(configs, re_match, re_val):
"""Check if any CONFIG option matches a regex """Check if any CONFIG option matches a regex
The match must be complete, i.e. from the start to end of the CONFIG option. The match must be complete, i.e. from the start to end of the CONFIG option.
@@ -1089,12 +1089,14 @@ def defconfig_matches(configs, re_match):
key: CONFIG option key: CONFIG option
value: Value of option value: Value of option
re_match (re.Pattern): Match to check re_match (re.Pattern): Match to check
re_val (re.Pattern): Regular expression to check against value (or None)
Returns: Returns:
bool: True if any CONFIG matches the regex bool: True if any CONFIG matches the regex
""" """
for cfg in configs: for cfg, val in configs.items():
if re_match.fullmatch(cfg): if re_match.fullmatch(cfg):
if not re_val or re_val.fullmatch(val):
return True return True
return False return False
@@ -1123,6 +1125,11 @@ def do_find_config(config_list):
if cfg[0] == '~': if cfg[0] == '~':
want = False want = False
cfg = cfg[1:] cfg = cfg[1:]
val = None
re_val = None
if '=' in cfg:
cfg, val = cfg.split('=', maxsplit=1)
re_val = re.compile(val)
# Search everything that is still in the running. If it has a config # Search everything that is still in the running. If it has a config
# that we want, or doesn't have one that we don't, add it into the # that we want, or doesn't have one that we don't, add it into the
@@ -1131,7 +1138,7 @@ def do_find_config(config_list):
out = set() out = set()
re_match = re.compile(cfg) re_match = re.compile(cfg)
for defc in in_list: for defc in in_list:
has_cfg = defconfig_matches(config_db[defc], re_match) has_cfg = defconfig_matches(config_db[defc], re_match, re_val)
if has_cfg == want: if has_cfg == want:
out.add(defc) out.add(defc)
print(f'{len(out)} matches') print(f'{len(out)} matches')