2018-12-18 21:13:35 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-18 21:13:35 +09:00
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2005-04-16 15:20:36 -07:00
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2005-11-08 21:34:51 -08:00
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2021-04-14 00:08:17 +09:00
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2024-02-03 00:58:06 +09:00
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2005-11-08 21:34:51 -08:00
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2005-04-16 15:20:36 -07:00
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2018-01-12 00:50:50 +09:00
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2005-04-16 15:20:36 -07:00
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2005-11-08 21:34:53 -08:00
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2018-12-11 20:01:06 +09:00
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2005-04-16 15:20:36 -07:00
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2021-04-14 00:08:17 +09:00
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2005-04-16 15:20:36 -07:00
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2024-05-05 03:33:32 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:00:59 +09:00
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2018-05-28 18:21:50 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:00:59 +09:00
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2018-12-11 20:01:07 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:01:01 +09:00
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2018-12-11 20:01:07 +09:00
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2018-12-11 20:00:59 +09:00
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2018-12-11 20:01:07 +09:00
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2018-12-11 20:00:59 +09:00
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2018-12-11 20:01:07 +09:00
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2018-12-11 20:00:59 +09:00
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2018-12-11 20:01:07 +09:00
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2018-12-11 20:01:00 +09:00
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2018-12-11 20:01:07 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:01:01 +09:00
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2018-12-11 20:01:07 +09:00
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2018-12-11 20:00:59 +09:00
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2018-12-11 20:01:07 +09:00
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2005-11-08 21:34:52 -08:00
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kconfig: support user-defined function and recursively expanded variable
Now, we got a basic ability to test compiler capability in Kconfig.
config CC_HAS_STACKPROTECTOR
def_bool $(shell,($(CC) -Werror -fstack-protector -E -x c /dev/null -o /dev/null 2>/dev/null) && echo y || echo n)
This works, but it is ugly to repeat this long boilerplate.
We want to describe like this:
config CC_HAS_STACKPROTECTOR
bool
default $(cc-option,-fstack-protector)
It is straight-forward to add a new function, but I do not like to
hard-code specialized functions like that. Hence, here is another
feature, user-defined function. This works as a textual shorthand
with parameterization.
A user-defined function is defined by using the = operator, and can
be referenced in the same way as built-in functions. A user-defined
function in Make is referenced like $(call my-func,arg1,arg2), but I
omitted the 'call' to make the syntax shorter.
The definition of a user-defined function contains $(1), $(2), etc.
in its body to reference the parameters. It is grammatically valid
to pass more or fewer arguments when calling it. We already exploit
this feature in our makefiles; scripts/Kbuild.include defines cc-option
which takes two arguments at most, but most of the callers pass only
one argument.
By the way, a variable is supported as a subset of this feature since
a variable is "a user-defined function with zero argument". In this
context, I mean "variable" as recursively expanded variable. I will
add a different flavored variable in the next commit.
The code above can be written as follows:
[Example Code]
success = $(shell,($(1)) >/dev/null 2>&1 && echo y || echo n)
cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null)
config CC_HAS_STACKPROTECTOR
def_bool $(cc-option,-fstack-protector)
[Result]
$ make -s alldefconfig && tail -n 1 .config
CONFIG_CC_HAS_STACKPROTECTOR=y
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-28 18:21:49 +09:00
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2005-04-16 15:20:36 -07:00
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2015-06-15 13:00:21 +01:00
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2005-04-16 15:20:36 -07:00
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kconfig: Don't leak symbol names during parsing
Prior to this fix, zconf.y did not free symbol names from zconf.l in
these contexts:
- After T_CONFIG ('config LEAKED')
- After T_MENUCONFIG ('menuconfig LEAKED')
- After T_SELECT ('select LEAKED')
- After T_IMPLY ('imply LEAKED')
- After T_DEFAULT in a choice ('default LEAKED')
All of these come in the form of T_WORD tokens, which always have their
associated string allocated on the heap in zconf.l and need to be freed.
Fix by introducing a new nonterminal 'nonconst_symbol' which takes a
T_WORD, fetches the symbol, and then frees the T_WORD string. The
already existing 'symbol' nonterminal works the same way but also
accepts T_WORD_QUOTE, corresponding to a constant symbol. T_WORD_QUOTE
should not be accepted in any of the contexts above, so the 'symbol'
nonterminal can't be reused here.
Fetching the symbol in 'nonconst_symbol' also removes a bunch of
sym_lookup() calls from actions.
Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix:
LEAK SUMMARY:
definitely lost: 711,571 bytes in 37,756 blocks
...
Summary after the fix:
LEAK SUMMARY:
definitely lost: 387,504 bytes in 15,545 blocks
...
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-08 19:11:18 +02:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:00:59 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:01:06 +09:00
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2005-11-08 21:34:53 -08:00
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2024-03-03 13:00:35 +09:00
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2018-12-11 20:01:01 +09:00
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2005-11-08 21:34:53 -08:00
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2024-02-03 00:58:09 +09:00
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2005-11-08 21:34:53 -08:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:00:49 +09:00
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2017-10-08 19:11:21 +02:00
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2019-12-17 13:14:19 +09:00
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2017-10-08 19:11:21 +02:00
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2005-11-08 21:34:53 -08:00
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kconfig: allow only 'config', 'comment', and 'if' inside 'choice'
The code block surrounded by 'if' ... 'endif' is reduced into if_stmt,
which is accepted in the 'choice' context. Therefore, you can write any
statements within a choice block by wrapping 'if y' ... 'end'.
For example, you can create a menu inside a choice, like follows:
---------------->8----------------
choice
prompt "choice"
config A
bool "A"
config B
bool "B"
if y
menu "strange menu"
config C
bool "C"
endmenu
endif
endchoice
---------------->8----------------
I want to change such a weird structure into a syntax error.
In fact, the USB gadget Kconfig had used nested 'choice' for no good
reason until commit df8df5e4bc37 ("usb: get rid of 'choice' for
legacy gadget drivers") killed it.
I think the 'source' inside 'choice' is on the fence. It is at least
gramatically sensible as long as the included file contains only
bool/tristate configs. However, it makes the code unreadable, and people
tend to forget the fact that the file is included from the choice
block. Commit 10e5e6c24963 ("usb: gadget: move choice ... endchoice to
legacy/Kconfig") got rid of the only usecase.
Going forward, you can only use 'config', 'comment', and 'if' inside
'choice'. This also recursively applies to 'if' blocks inside 'choice'.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-04-24 14:49:29 +09:00
|
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|
2005-11-08 21:34:53 -08:00
|
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|
kconfig: allow only 'config', 'comment', and 'if' inside 'choice'
The code block surrounded by 'if' ... 'endif' is reduced into if_stmt,
which is accepted in the 'choice' context. Therefore, you can write any
statements within a choice block by wrapping 'if y' ... 'end'.
For example, you can create a menu inside a choice, like follows:
---------------->8----------------
choice
prompt "choice"
config A
bool "A"
config B
bool "B"
if y
menu "strange menu"
config C
bool "C"
endmenu
endif
endchoice
---------------->8----------------
I want to change such a weird structure into a syntax error.
In fact, the USB gadget Kconfig had used nested 'choice' for no good
reason until commit df8df5e4bc37 ("usb: get rid of 'choice' for
legacy gadget drivers") killed it.
I think the 'source' inside 'choice' is on the fence. It is at least
gramatically sensible as long as the included file contains only
bool/tristate configs. However, it makes the code unreadable, and people
tend to forget the fact that the file is included from the choice
block. Commit 10e5e6c24963 ("usb: gadget: move choice ... endchoice to
legacy/Kconfig") got rid of the only usecase.
Going forward, you can only use 'config', 'comment', and 'if' inside
'choice'. This also recursively applies to 'if' blocks inside 'choice'.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-04-24 14:49:29 +09:00
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2005-11-08 21:34:53 -08:00
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kconfig: allow only 'config', 'comment', and 'if' inside 'choice'
The code block surrounded by 'if' ... 'endif' is reduced into if_stmt,
which is accepted in the 'choice' context. Therefore, you can write any
statements within a choice block by wrapping 'if y' ... 'end'.
For example, you can create a menu inside a choice, like follows:
---------------->8----------------
choice
prompt "choice"
config A
bool "A"
config B
bool "B"
if y
menu "strange menu"
config C
bool "C"
endmenu
endif
endchoice
---------------->8----------------
I want to change such a weird structure into a syntax error.
In fact, the USB gadget Kconfig had used nested 'choice' for no good
reason until commit df8df5e4bc37 ("usb: get rid of 'choice' for
legacy gadget drivers") killed it.
I think the 'source' inside 'choice' is on the fence. It is at least
gramatically sensible as long as the included file contains only
bool/tristate configs. However, it makes the code unreadable, and people
tend to forget the fact that the file is included from the choice
block. Commit 10e5e6c24963 ("usb: gadget: move choice ... endchoice to
legacy/Kconfig") got rid of the only usecase.
Going forward, you can only use 'config', 'comment', and 'if' inside
'choice'. This also recursively applies to 'if' blocks inside 'choice'.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-04-24 14:49:29 +09:00
|
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2005-11-08 21:34:53 -08:00
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2005-04-16 15:20:36 -07:00
|
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|
|
kconfig: allow only 'config', 'comment', and 'if' inside 'choice'
The code block surrounded by 'if' ... 'endif' is reduced into if_stmt,
which is accepted in the 'choice' context. Therefore, you can write any
statements within a choice block by wrapping 'if y' ... 'end'.
For example, you can create a menu inside a choice, like follows:
---------------->8----------------
choice
prompt "choice"
config A
bool "A"
config B
bool "B"
if y
menu "strange menu"
config C
bool "C"
endmenu
endif
endchoice
---------------->8----------------
I want to change such a weird structure into a syntax error.
In fact, the USB gadget Kconfig had used nested 'choice' for no good
reason until commit df8df5e4bc37 ("usb: get rid of 'choice' for
legacy gadget drivers") killed it.
I think the 'source' inside 'choice' is on the fence. It is at least
gramatically sensible as long as the included file contains only
bool/tristate configs. However, it makes the code unreadable, and people
tend to forget the fact that the file is included from the choice
block. Commit 10e5e6c24963 ("usb: gadget: move choice ... endchoice to
legacy/Kconfig") got rid of the only usecase.
Going forward, you can only use 'config', 'comment', and 'if' inside
'choice'. This also recursively applies to 'if' blocks inside 'choice'.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-04-24 14:49:29 +09:00
|
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2005-11-08 21:34:53 -08:00
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2005-04-16 15:20:36 -07:00
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kconfig: Don't leak symbol names during parsing
Prior to this fix, zconf.y did not free symbol names from zconf.l in
these contexts:
- After T_CONFIG ('config LEAKED')
- After T_MENUCONFIG ('menuconfig LEAKED')
- After T_SELECT ('select LEAKED')
- After T_IMPLY ('imply LEAKED')
- After T_DEFAULT in a choice ('default LEAKED')
All of these come in the form of T_WORD tokens, which always have their
associated string allocated on the heap in zconf.l and need to be freed.
Fix by introducing a new nonterminal 'nonconst_symbol' which takes a
T_WORD, fetches the symbol, and then frees the T_WORD string. The
already existing 'symbol' nonterminal works the same way but also
accepts T_WORD_QUOTE, corresponding to a constant symbol. T_WORD_QUOTE
should not be accepted in any of the contexts above, so the 'symbol'
nonterminal can't be reused here.
Fetching the symbol in 'nonconst_symbol' also removes a bunch of
sym_lookup() calls from actions.
Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix:
LEAK SUMMARY:
definitely lost: 711,571 bytes in 37,756 blocks
...
Summary after the fix:
LEAK SUMMARY:
definitely lost: 387,504 bytes in 15,545 blocks
...
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-08 19:11:18 +02:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
kconfig: Don't leak symbol names during parsing
Prior to this fix, zconf.y did not free symbol names from zconf.l in
these contexts:
- After T_CONFIG ('config LEAKED')
- After T_MENUCONFIG ('menuconfig LEAKED')
- After T_SELECT ('select LEAKED')
- After T_IMPLY ('imply LEAKED')
- After T_DEFAULT in a choice ('default LEAKED')
All of these come in the form of T_WORD tokens, which always have their
associated string allocated on the heap in zconf.l and need to be freed.
Fix by introducing a new nonterminal 'nonconst_symbol' which takes a
T_WORD, fetches the symbol, and then frees the T_WORD string. The
already existing 'symbol' nonterminal works the same way but also
accepts T_WORD_QUOTE, corresponding to a constant symbol. T_WORD_QUOTE
should not be accepted in any of the contexts above, so the 'symbol'
nonterminal can't be reused here.
Fetching the symbol in 'nonconst_symbol' also removes a bunch of
sym_lookup() calls from actions.
Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix:
LEAK SUMMARY:
definitely lost: 711,571 bytes in 37,756 blocks
...
Summary after the fix:
LEAK SUMMARY:
definitely lost: 387,504 bytes in 15,545 blocks
...
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-08 19:11:18 +02:00
|
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|
2024-02-03 00:58:08 +09:00
|
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|
|
2005-04-16 15:20:36 -07:00
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2024-05-05 03:33:32 +09:00
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2024-02-03 00:58:08 +09:00
|
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|
2005-04-16 15:20:36 -07:00
|
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kconfig: Don't leak symbol names during parsing
Prior to this fix, zconf.y did not free symbol names from zconf.l in
these contexts:
- After T_CONFIG ('config LEAKED')
- After T_MENUCONFIG ('menuconfig LEAKED')
- After T_SELECT ('select LEAKED')
- After T_IMPLY ('imply LEAKED')
- After T_DEFAULT in a choice ('default LEAKED')
All of these come in the form of T_WORD tokens, which always have their
associated string allocated on the heap in zconf.l and need to be freed.
Fix by introducing a new nonterminal 'nonconst_symbol' which takes a
T_WORD, fetches the symbol, and then frees the T_WORD string. The
already existing 'symbol' nonterminal works the same way but also
accepts T_WORD_QUOTE, corresponding to a constant symbol. T_WORD_QUOTE
should not be accepted in any of the contexts above, so the 'symbol'
nonterminal can't be reused here.
Fetching the symbol in 'nonconst_symbol' also removes a bunch of
sym_lookup() calls from actions.
Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix:
LEAK SUMMARY:
definitely lost: 711,571 bytes in 37,756 blocks
...
Summary after the fix:
LEAK SUMMARY:
definitely lost: 387,504 bytes in 15,545 blocks
...
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-08 19:11:18 +02:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
kconfig: Don't leak symbol names during parsing
Prior to this fix, zconf.y did not free symbol names from zconf.l in
these contexts:
- After T_CONFIG ('config LEAKED')
- After T_MENUCONFIG ('menuconfig LEAKED')
- After T_SELECT ('select LEAKED')
- After T_IMPLY ('imply LEAKED')
- After T_DEFAULT in a choice ('default LEAKED')
All of these come in the form of T_WORD tokens, which always have their
associated string allocated on the heap in zconf.l and need to be freed.
Fix by introducing a new nonterminal 'nonconst_symbol' which takes a
T_WORD, fetches the symbol, and then frees the T_WORD string. The
already existing 'symbol' nonterminal works the same way but also
accepts T_WORD_QUOTE, corresponding to a constant symbol. T_WORD_QUOTE
should not be accepted in any of the contexts above, so the 'symbol'
nonterminal can't be reused here.
Fetching the symbol in 'nonconst_symbol' also removes a bunch of
sym_lookup() calls from actions.
Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix:
LEAK SUMMARY:
definitely lost: 711,571 bytes in 37,756 blocks
...
Summary after the fix:
LEAK SUMMARY:
definitely lost: 387,504 bytes in 15,545 blocks
...
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-08 19:11:18 +02:00
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2024-02-03 00:58:08 +09:00
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2005-04-16 15:20:36 -07:00
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2024-02-03 00:58:08 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:00:59 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:00:59 +09:00
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2024-02-03 00:58:08 +09:00
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2005-04-16 15:20:36 -07:00
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2019-12-17 13:14:19 +09:00
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2005-04-16 15:20:36 -07:00
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2024-02-03 00:58:08 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:00:59 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:00:59 +09:00
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2024-02-03 00:58:08 +09:00
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2018-12-11 20:00:59 +09:00
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2005-04-16 15:20:36 -07:00
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kconfig: Don't leak symbol names during parsing
Prior to this fix, zconf.y did not free symbol names from zconf.l in
these contexts:
- After T_CONFIG ('config LEAKED')
- After T_MENUCONFIG ('menuconfig LEAKED')
- After T_SELECT ('select LEAKED')
- After T_IMPLY ('imply LEAKED')
- After T_DEFAULT in a choice ('default LEAKED')
All of these come in the form of T_WORD tokens, which always have their
associated string allocated on the heap in zconf.l and need to be freed.
Fix by introducing a new nonterminal 'nonconst_symbol' which takes a
T_WORD, fetches the symbol, and then frees the T_WORD string. The
already existing 'symbol' nonterminal works the same way but also
accepts T_WORD_QUOTE, corresponding to a constant symbol. T_WORD_QUOTE
should not be accepted in any of the contexts above, so the 'symbol'
nonterminal can't be reused here.
Fetching the symbol in 'nonconst_symbol' also removes a bunch of
sym_lookup() calls from actions.
Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix:
LEAK SUMMARY:
definitely lost: 711,571 bytes in 37,756 blocks
...
Summary after the fix:
LEAK SUMMARY:
definitely lost: 387,504 bytes in 15,545 blocks
...
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-08 19:11:18 +02:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
kconfig: Don't leak symbol names during parsing
Prior to this fix, zconf.y did not free symbol names from zconf.l in
these contexts:
- After T_CONFIG ('config LEAKED')
- After T_MENUCONFIG ('menuconfig LEAKED')
- After T_SELECT ('select LEAKED')
- After T_IMPLY ('imply LEAKED')
- After T_DEFAULT in a choice ('default LEAKED')
All of these come in the form of T_WORD tokens, which always have their
associated string allocated on the heap in zconf.l and need to be freed.
Fix by introducing a new nonterminal 'nonconst_symbol' which takes a
T_WORD, fetches the symbol, and then frees the T_WORD string. The
already existing 'symbol' nonterminal works the same way but also
accepts T_WORD_QUOTE, corresponding to a constant symbol. T_WORD_QUOTE
should not be accepted in any of the contexts above, so the 'symbol'
nonterminal can't be reused here.
Fetching the symbol in 'nonconst_symbol' also removes a bunch of
sym_lookup() calls from actions.
Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix:
LEAK SUMMARY:
definitely lost: 711,571 bytes in 37,756 blocks
...
Summary after the fix:
LEAK SUMMARY:
definitely lost: 387,504 bytes in 15,545 blocks
...
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-08 19:11:18 +02:00
|
|
|
|
2024-02-03 00:58:08 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
kconfig: Don't leak symbol names during parsing
Prior to this fix, zconf.y did not free symbol names from zconf.l in
these contexts:
- After T_CONFIG ('config LEAKED')
- After T_MENUCONFIG ('menuconfig LEAKED')
- After T_SELECT ('select LEAKED')
- After T_IMPLY ('imply LEAKED')
- After T_DEFAULT in a choice ('default LEAKED')
All of these come in the form of T_WORD tokens, which always have their
associated string allocated on the heap in zconf.l and need to be freed.
Fix by introducing a new nonterminal 'nonconst_symbol' which takes a
T_WORD, fetches the symbol, and then frees the T_WORD string. The
already existing 'symbol' nonterminal works the same way but also
accepts T_WORD_QUOTE, corresponding to a constant symbol. T_WORD_QUOTE
should not be accepted in any of the contexts above, so the 'symbol'
nonterminal can't be reused here.
Fetching the symbol in 'nonconst_symbol' also removes a bunch of
sym_lookup() calls from actions.
Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix:
LEAK SUMMARY:
definitely lost: 711,571 bytes in 37,756 blocks
...
Summary after the fix:
LEAK SUMMARY:
definitely lost: 387,504 bytes in 15,545 blocks
...
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-08 19:11:18 +02:00
|
|
|
|
2016-11-11 00:10:05 -05:00
|
|
|
|
kconfig: Don't leak symbol names during parsing
Prior to this fix, zconf.y did not free symbol names from zconf.l in
these contexts:
- After T_CONFIG ('config LEAKED')
- After T_MENUCONFIG ('menuconfig LEAKED')
- After T_SELECT ('select LEAKED')
- After T_IMPLY ('imply LEAKED')
- After T_DEFAULT in a choice ('default LEAKED')
All of these come in the form of T_WORD tokens, which always have their
associated string allocated on the heap in zconf.l and need to be freed.
Fix by introducing a new nonterminal 'nonconst_symbol' which takes a
T_WORD, fetches the symbol, and then frees the T_WORD string. The
already existing 'symbol' nonterminal works the same way but also
accepts T_WORD_QUOTE, corresponding to a constant symbol. T_WORD_QUOTE
should not be accepted in any of the contexts above, so the 'symbol'
nonterminal can't be reused here.
Fetching the symbol in 'nonconst_symbol' also removes a bunch of
sym_lookup() calls from actions.
Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix:
LEAK SUMMARY:
definitely lost: 711,571 bytes in 37,756 blocks
...
Summary after the fix:
LEAK SUMMARY:
definitely lost: 387,504 bytes in 15,545 blocks
...
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-08 19:11:18 +02:00
|
|
|
|
2024-02-03 00:58:08 +09:00
|
|
|
|
2016-11-11 00:10:05 -05:00
|
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|
2005-04-16 15:20:36 -07:00
|
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2024-02-03 00:58:08 +09:00
|
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|
2005-04-16 15:20:36 -07:00
|
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|
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|
2021-03-14 04:48:36 +09:00
|
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|
|
2018-12-11 20:01:00 +09:00
|
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|
2021-03-14 04:48:36 +09:00
|
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|
2018-12-11 20:01:00 +09:00
|
|
|
|
2006-06-08 22:12:44 -07:00
|
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|
|
2005-04-16 15:20:36 -07:00
|
|
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|
|
|
|
|
|
2024-03-03 13:00:35 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
2024-04-23 01:10:54 +09:00
|
|
|
|
2024-04-27 18:16:38 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
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|
|
|
|
|
|
|
2024-02-03 00:58:08 +09:00
|
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|
|
2005-04-16 15:20:36 -07:00
|
|
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|
|
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|
|
|
|
|
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|
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|
2024-03-10 22:45:15 +09:00
|
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|
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|
|
2005-11-08 21:34:53 -08:00
|
|
|
|
2024-05-05 03:33:32 +09:00
|
|
|
|
|
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2024-05-05 03:33:32 +09:00
|
|
|
|
|
|
|
|
|
2018-12-11 20:01:06 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
2024-02-03 00:58:08 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
kconfig: allow only 'config', 'comment', and 'if' inside 'choice'
The code block surrounded by 'if' ... 'endif' is reduced into if_stmt,
which is accepted in the 'choice' context. Therefore, you can write any
statements within a choice block by wrapping 'if y' ... 'end'.
For example, you can create a menu inside a choice, like follows:
---------------->8----------------
choice
prompt "choice"
config A
bool "A"
config B
bool "B"
if y
menu "strange menu"
config C
bool "C"
endmenu
endif
endchoice
---------------->8----------------
I want to change such a weird structure into a syntax error.
In fact, the USB gadget Kconfig had used nested 'choice' for no good
reason until commit df8df5e4bc37 ("usb: get rid of 'choice' for
legacy gadget drivers") killed it.
I think the 'source' inside 'choice' is on the fence. It is at least
gramatically sensible as long as the included file contains only
bool/tristate configs. However, it makes the code unreadable, and people
tend to forget the fact that the file is included from the choice
block. Commit 10e5e6c24963 ("usb: gadget: move choice ... endchoice to
legacy/Kconfig") got rid of the only usecase.
Going forward, you can only use 'config', 'comment', and 'if' inside
'choice'. This also recursively applies to 'if' blocks inside 'choice'.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-04-24 14:49:29 +09:00
|
|
|
|
2005-11-08 21:34:53 -08:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2019-12-17 13:14:19 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
2024-02-03 00:58:08 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
2018-12-11 20:00:59 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
2018-12-11 20:00:59 +09:00
|
|
|
|
2024-02-03 00:58:08 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
kconfig: Don't leak symbol names during parsing
Prior to this fix, zconf.y did not free symbol names from zconf.l in
these contexts:
- After T_CONFIG ('config LEAKED')
- After T_MENUCONFIG ('menuconfig LEAKED')
- After T_SELECT ('select LEAKED')
- After T_IMPLY ('imply LEAKED')
- After T_DEFAULT in a choice ('default LEAKED')
All of these come in the form of T_WORD tokens, which always have their
associated string allocated on the heap in zconf.l and need to be freed.
Fix by introducing a new nonterminal 'nonconst_symbol' which takes a
T_WORD, fetches the symbol, and then frees the T_WORD string. The
already existing 'symbol' nonterminal works the same way but also
accepts T_WORD_QUOTE, corresponding to a constant symbol. T_WORD_QUOTE
should not be accepted in any of the contexts above, so the 'symbol'
nonterminal can't be reused here.
Fetching the symbol in 'nonconst_symbol' also removes a bunch of
sym_lookup() calls from actions.
Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix:
LEAK SUMMARY:
definitely lost: 711,571 bytes in 37,756 blocks
...
Summary after the fix:
LEAK SUMMARY:
definitely lost: 387,504 bytes in 15,545 blocks
...
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-08 19:11:18 +02:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
2018-12-11 20:00:59 +09:00
|
|
|
|
2024-02-03 00:58:08 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
2018-12-11 20:00:59 +09:00
|
|
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|
|
|
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|
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|
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|
|
|
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
2018-06-21 15:30:54 +02:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
2024-02-03 00:58:08 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
2005-11-08 21:34:53 -08:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2018-12-11 20:01:06 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
2024-02-03 00:58:08 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2018-12-11 20:00:54 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
kconfig: allow only 'config', 'comment', and 'if' inside 'choice'
The code block surrounded by 'if' ... 'endif' is reduced into if_stmt,
which is accepted in the 'choice' context. Therefore, you can write any
statements within a choice block by wrapping 'if y' ... 'end'.
For example, you can create a menu inside a choice, like follows:
---------------->8----------------
choice
prompt "choice"
config A
bool "A"
config B
bool "B"
if y
menu "strange menu"
config C
bool "C"
endmenu
endif
endchoice
---------------->8----------------
I want to change such a weird structure into a syntax error.
In fact, the USB gadget Kconfig had used nested 'choice' for no good
reason until commit df8df5e4bc37 ("usb: get rid of 'choice' for
legacy gadget drivers") killed it.
I think the 'source' inside 'choice' is on the fence. It is at least
gramatically sensible as long as the included file contains only
bool/tristate configs. However, it makes the code unreadable, and people
tend to forget the fact that the file is included from the choice
block. Commit 10e5e6c24963 ("usb: gadget: move choice ... endchoice to
legacy/Kconfig") got rid of the only usecase.
Going forward, you can only use 'config', 'comment', and 'if' inside
'choice'. This also recursively applies to 'if' blocks inside 'choice'.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-04-24 14:49:29 +09:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
2019-12-17 13:14:19 +09:00
|
|
|
|
2005-04-16 15:20:36 -07:00
|
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|
|
|
|
|
|
|
2005-07-28 17:56:25 +02:00
|
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|
2024-02-03 00:58:08 +09:00
|
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|
2005-04-16 15:20:36 -07:00
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2018-12-11 20:00:56 +09:00
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2005-04-16 15:20:36 -07:00
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2005-11-08 21:34:53 -08:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:01:06 +09:00
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2005-04-16 15:20:36 -07:00
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2024-02-03 00:58:08 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:00:55 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:00:56 +09:00
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2019-12-17 13:14:19 +09:00
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2005-04-16 15:20:36 -07:00
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2024-02-03 00:58:08 +09:00
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2005-11-08 21:34:53 -08:00
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2017-10-08 19:11:19 +02:00
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2005-04-16 15:20:36 -07:00
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2019-12-17 13:14:19 +09:00
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2005-04-16 15:20:36 -07:00
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2005-07-28 17:56:25 +02:00
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2024-02-03 00:58:08 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:00:57 +09:00
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2017-10-09 00:14:48 +02:00
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2005-04-16 15:20:36 -07:00
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2024-02-03 00:58:08 +09:00
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2005-04-16 15:20:36 -07:00
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2018-01-12 07:47:47 +01:00
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2018-01-31 10:34:30 +01:00
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2007-07-21 00:00:36 +02:00
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2005-04-16 15:20:36 -07:00
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2024-02-03 00:58:08 +09:00
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2005-04-16 15:20:36 -07:00
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2010-11-06 18:30:23 -03:00
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2018-12-11 20:00:46 +09:00
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2010-11-06 18:30:23 -03:00
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2005-04-16 15:20:36 -07:00
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2019-12-17 13:14:19 +09:00
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2005-04-16 15:20:36 -07:00
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2005-07-28 17:56:25 +02:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:01:06 +09:00
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2005-04-16 15:20:36 -07:00
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2015-06-15 13:00:21 +01:00
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2005-04-16 15:20:36 -07:00
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kconfig: Don't leak symbol names during parsing
Prior to this fix, zconf.y did not free symbol names from zconf.l in
these contexts:
- After T_CONFIG ('config LEAKED')
- After T_MENUCONFIG ('menuconfig LEAKED')
- After T_SELECT ('select LEAKED')
- After T_IMPLY ('imply LEAKED')
- After T_DEFAULT in a choice ('default LEAKED')
All of these come in the form of T_WORD tokens, which always have their
associated string allocated on the heap in zconf.l and need to be freed.
Fix by introducing a new nonterminal 'nonconst_symbol' which takes a
T_WORD, fetches the symbol, and then frees the T_WORD string. The
already existing 'symbol' nonterminal works the same way but also
accepts T_WORD_QUOTE, corresponding to a constant symbol. T_WORD_QUOTE
should not be accepted in any of the contexts above, so the 'symbol'
nonterminal can't be reused here.
Fetching the symbol in 'nonconst_symbol' also removes a bunch of
sym_lookup() calls from actions.
Summary from Valgrind on 'menuconfig' (ARCH=x86) before the fix:
LEAK SUMMARY:
definitely lost: 711,571 bytes in 37,756 blocks
...
Summary after the fix:
LEAK SUMMARY:
definitely lost: 387,504 bytes in 15,545 blocks
...
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-10-08 19:11:18 +02:00
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2008-02-29 05:11:50 +01:00
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2005-04-16 15:20:36 -07:00
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kconfig: support user-defined function and recursively expanded variable
Now, we got a basic ability to test compiler capability in Kconfig.
config CC_HAS_STACKPROTECTOR
def_bool $(shell,($(CC) -Werror -fstack-protector -E -x c /dev/null -o /dev/null 2>/dev/null) && echo y || echo n)
This works, but it is ugly to repeat this long boilerplate.
We want to describe like this:
config CC_HAS_STACKPROTECTOR
bool
default $(cc-option,-fstack-protector)
It is straight-forward to add a new function, but I do not like to
hard-code specialized functions like that. Hence, here is another
feature, user-defined function. This works as a textual shorthand
with parameterization.
A user-defined function is defined by using the = operator, and can
be referenced in the same way as built-in functions. A user-defined
function in Make is referenced like $(call my-func,arg1,arg2), but I
omitted the 'call' to make the syntax shorter.
The definition of a user-defined function contains $(1), $(2), etc.
in its body to reference the parameters. It is grammatically valid
to pass more or fewer arguments when calling it. We already exploit
this feature in our makefiles; scripts/Kbuild.include defines cc-option
which takes two arguments at most, but most of the callers pass only
one argument.
By the way, a variable is supported as a subset of this feature since
a variable is "a user-defined function with zero argument". In this
context, I mean "variable" as recursively expanded variable. I will
add a different flavored variable in the next commit.
The code above can be written as follows:
[Example Code]
success = $(shell,($(1)) >/dev/null 2>&1 && echo y || echo n)
cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null)
config CC_HAS_STACKPROTECTOR
def_bool $(cc-option,-fstack-protector)
[Result]
$ make -s alldefconfig && tail -n 1 .config
CONFIG_CC_HAS_STACKPROTECTOR=y
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-28 18:21:49 +09:00
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|
2018-12-11 20:01:02 +09:00
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2018-12-11 20:01:01 +09:00
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kconfig: support user-defined function and recursively expanded variable
Now, we got a basic ability to test compiler capability in Kconfig.
config CC_HAS_STACKPROTECTOR
def_bool $(shell,($(CC) -Werror -fstack-protector -E -x c /dev/null -o /dev/null 2>/dev/null) && echo y || echo n)
This works, but it is ugly to repeat this long boilerplate.
We want to describe like this:
config CC_HAS_STACKPROTECTOR
bool
default $(cc-option,-fstack-protector)
It is straight-forward to add a new function, but I do not like to
hard-code specialized functions like that. Hence, here is another
feature, user-defined function. This works as a textual shorthand
with parameterization.
A user-defined function is defined by using the = operator, and can
be referenced in the same way as built-in functions. A user-defined
function in Make is referenced like $(call my-func,arg1,arg2), but I
omitted the 'call' to make the syntax shorter.
The definition of a user-defined function contains $(1), $(2), etc.
in its body to reference the parameters. It is grammatically valid
to pass more or fewer arguments when calling it. We already exploit
this feature in our makefiles; scripts/Kbuild.include defines cc-option
which takes two arguments at most, but most of the callers pass only
one argument.
By the way, a variable is supported as a subset of this feature since
a variable is "a user-defined function with zero argument". In this
context, I mean "variable" as recursively expanded variable. I will
add a different flavored variable in the next commit.
The code above can be written as follows:
[Example Code]
success = $(shell,($(1)) >/dev/null 2>&1 && echo y || echo n)
cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null)
config CC_HAS_STACKPROTECTOR
def_bool $(cc-option,-fstack-protector)
[Result]
$ make -s alldefconfig && tail -n 1 .config
CONFIG_CC_HAS_STACKPROTECTOR=y
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-28 18:21:49 +09:00
|
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|
2005-04-16 15:20:36 -07:00
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|
2024-05-05 03:33:33 +09:00
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2005-04-16 15:20:36 -07:00
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|
2024-02-11 21:41:04 +09:00
|
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2005-04-16 15:20:36 -07:00
|
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|
2024-02-03 00:58:04 +09:00
|
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2024-02-03 00:58:05 +09:00
|
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2024-02-03 00:58:04 +09:00
|
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|
2005-04-16 15:20:36 -07:00
|
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|
2009-11-25 12:28:43 +02:00
|
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|
2005-04-16 15:20:36 -07:00
|
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|
|
2005-11-08 21:34:53 -08:00
|
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|
2018-01-12 00:50:50 +09:00
|
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|
|
kconfig: support user-defined function and recursively expanded variable
Now, we got a basic ability to test compiler capability in Kconfig.
config CC_HAS_STACKPROTECTOR
def_bool $(shell,($(CC) -Werror -fstack-protector -E -x c /dev/null -o /dev/null 2>/dev/null) && echo y || echo n)
This works, but it is ugly to repeat this long boilerplate.
We want to describe like this:
config CC_HAS_STACKPROTECTOR
bool
default $(cc-option,-fstack-protector)
It is straight-forward to add a new function, but I do not like to
hard-code specialized functions like that. Hence, here is another
feature, user-defined function. This works as a textual shorthand
with parameterization.
A user-defined function is defined by using the = operator, and can
be referenced in the same way as built-in functions. A user-defined
function in Make is referenced like $(call my-func,arg1,arg2), but I
omitted the 'call' to make the syntax shorter.
The definition of a user-defined function contains $(1), $(2), etc.
in its body to reference the parameters. It is grammatically valid
to pass more or fewer arguments when calling it. We already exploit
this feature in our makefiles; scripts/Kbuild.include defines cc-option
which takes two arguments at most, but most of the callers pass only
one argument.
By the way, a variable is supported as a subset of this feature since
a variable is "a user-defined function with zero argument". In this
context, I mean "variable" as recursively expanded variable. I will
add a different flavored variable in the next commit.
The code above can be written as follows:
[Example Code]
success = $(shell,($(1)) >/dev/null 2>&1 && echo y || echo n)
cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null)
config CC_HAS_STACKPROTECTOR
def_bool $(cc-option,-fstack-protector)
[Result]
$ make -s alldefconfig && tail -n 1 .config
CONFIG_CC_HAS_STACKPROTECTOR=y
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-28 18:21:49 +09:00
|
|
|
|
2024-02-03 00:58:12 +09:00
|
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|
2024-02-03 00:58:05 +09:00
|
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|
kconfig: support user-defined function and recursively expanded variable
Now, we got a basic ability to test compiler capability in Kconfig.
config CC_HAS_STACKPROTECTOR
def_bool $(shell,($(CC) -Werror -fstack-protector -E -x c /dev/null -o /dev/null 2>/dev/null) && echo y || echo n)
This works, but it is ugly to repeat this long boilerplate.
We want to describe like this:
config CC_HAS_STACKPROTECTOR
bool
default $(cc-option,-fstack-protector)
It is straight-forward to add a new function, but I do not like to
hard-code specialized functions like that. Hence, here is another
feature, user-defined function. This works as a textual shorthand
with parameterization.
A user-defined function is defined by using the = operator, and can
be referenced in the same way as built-in functions. A user-defined
function in Make is referenced like $(call my-func,arg1,arg2), but I
omitted the 'call' to make the syntax shorter.
The definition of a user-defined function contains $(1), $(2), etc.
in its body to reference the parameters. It is grammatically valid
to pass more or fewer arguments when calling it. We already exploit
this feature in our makefiles; scripts/Kbuild.include defines cc-option
which takes two arguments at most, but most of the callers pass only
one argument.
By the way, a variable is supported as a subset of this feature since
a variable is "a user-defined function with zero argument". In this
context, I mean "variable" as recursively expanded variable. I will
add a different flavored variable in the next commit.
The code above can be written as follows:
[Example Code]
success = $(shell,($(1)) >/dev/null 2>&1 && echo y || echo n)
cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null)
config CC_HAS_STACKPROTECTOR
def_bool $(cc-option,-fstack-protector)
[Result]
$ make -s alldefconfig && tail -n 1 .config
CONFIG_CC_HAS_STACKPROTECTOR=y
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-28 18:21:49 +09:00
|
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|
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|
|
2018-01-12 00:50:50 +09:00
|
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|
|
2005-04-16 15:20:36 -07:00
|
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|
|
2013-09-03 17:07:18 +02:00
|
|
|
|
2024-02-03 00:58:03 +09:00
|
|
|
|
2010-09-09 21:17:26 -04:00
|
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|
|
2018-05-28 18:21:42 +09:00
|
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|
2018-05-28 18:21:44 +09:00
|
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|
2018-05-28 18:21:42 +09:00
|
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|
|
2010-09-09 21:17:26 -04:00
|
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|
2024-03-23 17:51:01 +09:00
|
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|
2024-02-11 21:41:04 +09:00
|
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|
2024-04-21 18:02:52 +09:00
|
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|
2024-05-05 03:33:33 +09:00
|
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|
2024-02-11 21:41:04 +09:00
|
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|
2018-01-12 00:50:50 +09:00
|
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|
2024-05-05 03:33:33 +09:00
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2014-06-10 19:08:13 +09:00
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|
2024-02-11 21:41:04 +09:00
|
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|
|
2018-01-12 00:50:50 +09:00
|
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|
|
2007-05-06 09:20:10 +02:00
|
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|
2021-04-10 15:57:22 +09:00
|
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|
2005-04-16 15:20:36 -07:00
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2018-12-11 20:01:06 +09:00
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2005-04-16 15:20:36 -07:00
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2018-12-11 20:01:06 +09:00
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|
2005-11-08 21:34:53 -08:00
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|
2018-12-11 20:01:06 +09:00
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2018-01-12 00:50:50 +09:00
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2005-04-16 15:20:36 -07:00
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2024-02-03 00:58:09 +09:00
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2005-11-08 21:34:53 -08:00
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2018-12-11 20:01:06 +09:00
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|
2005-11-08 21:34:53 -08:00
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|
2024-02-03 00:58:09 +09:00
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2018-12-11 20:01:06 +09:00
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2018-01-12 00:50:50 +09:00
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2005-04-16 15:20:36 -07:00
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2024-02-03 00:58:08 +09:00
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2005-11-08 21:34:53 -08:00
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2018-01-12 00:50:50 +09:00
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2024-02-03 00:58:08 +09:00
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2005-04-16 15:20:36 -07:00
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2018-01-12 00:50:50 +09:00
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2005-04-16 15:20:36 -07:00
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2024-02-03 00:58:08 +09:00
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2005-04-16 15:20:36 -07:00
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2009-10-15 12:13:36 -07:00
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2005-04-16 15:20:36 -07:00
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2009-10-15 12:13:36 -07:00
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2005-04-16 15:20:36 -07:00
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2010-04-14 11:44:20 +08:00
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2005-04-16 15:20:36 -07:00
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2010-04-14 11:44:20 +08:00
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2005-04-16 15:20:36 -07:00
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2017-12-16 00:38:02 +09:00
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2005-04-16 15:20:36 -07:00
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2010-04-14 11:44:20 +08:00
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2016-11-11 00:10:05 -05:00
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2010-04-14 11:44:20 +08:00
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2018-06-22 21:27:38 +02:00
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2019-12-17 13:14:22 +09:00
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2018-06-22 21:27:38 +02:00
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2005-04-16 15:20:36 -07:00
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2007-07-21 00:00:36 +02:00
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2005-04-16 15:20:36 -07:00
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