linux-toradex.git/scripts/genksyms/genksyms.c, branch v3.3.1

genksyms: Do not expand internal types

2011-10-11T10:00:39+00:00

Consider structures, unions and enums defined in the source file as
internal and do not expand them. This way, changes to e.g. struct
serial_private in drivers/tty/serial/8250_pci.c will not affect the
checksum of the pciserial_* exports.

genksyms: Use same type in loop comparison

2011-07-25T12:55:17+00:00

The ARRAY_SIZE macro in scripts/genksyms/genksyms.c returns a value of
type size_t. That value is being compared to a variable of type int in
a loop in read_node(). Change the int variable to size_t type as well,
so we don't do signed vs unsigned type comparisons with all the
potential promotion/sign extension trouble that can cause (also
silences compiler warnings at high levels of warnings).

Signed-off-by: Jesper Juhl 
Signed-off-by: Michal Marek

genksyms: Track changes to enum constants

2011-03-17T14:13:56+00:00

Enum constants can be used as array sizes; if the enum itself does not
appear in the symbol expansion, a change in the enum constant will go
unnoticed. Example patch that changes the ABI but does not change the
checksum with current genksyms:

| enum e {
|	E1,
|	E2,
|+	E3,
|	E_MAX
| };
|
| struct s {
|	int a[E_MAX];
| }
|
| int f(struct s *s) { ... }
| EXPORT_SYMBOL(f)

Therefore, remember the value of each enum constant and
expand each occurence to  . The value is not actually
computed, but instead an expression in the form
(last explicitly assigned value) + N
is used. This avoids having to parse and semantically understand whole
of C.

Note: The changes won't take effect until the lexer and parser are
rebuilt by the next patch.

Signed-off-by: Michal Marek 
Acked-by: Sam Ravnborg

genksyms: simplify usage of find_symbol()

2011-03-17T14:13:55+00:00

Allow searching for symbols of an exact type. The lexer does this and a
subsequent patch will add one more usage.

Signed-off-by: Michal Marek 
Acked-by: Sam Ravnborg

genksyms: Add helpers for building string lists

2011-03-17T14:13:55+00:00

Signed-off-by: Michal Marek 
Acked-by: Sam Ravnborg

genksyms: Simplify printing of symbol types

2011-03-17T14:13:55+00:00

Instead of special-casing SYM_NORMAL, do not map any name to it. Also
explicitly set the single-letter name of the symbol type, which will be
needed by a further patch. The only user-visible change is one debug
printf.

Signed-off-by: Michal Marek 
Acked-by: Sam Ravnborg

genksyms: close ref_file after use

2010-02-02T13:33:55+00:00

It is the last place when the file is read, so close it.

Signed-off-by: Alexander Beregalov 
Signed-off-by: Michal Marek

Documentation/: fix warnings from -Wmissing-prototypes in HOSTCFLAGS

2009-09-23T14:39:28+00:00

Fix up -Wmissing-prototypes in compileable userspace code, mainly under
Documentation/.

Signed-off-by: Ladinu Chandrasinghe 
Signed-off-by: Trevor Keith 
Cc: Sam Ravnborg 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Revert "kbuild: strip generated symbols from *.ko"

2009-01-14T20:38:20+00:00

This reverts commit ad7a953c522ceb496611d127e51e278bfe0ff483.

And commit: ("allow stripping of generated symbols under CONFIG_KALLSYMS_ALL")
            9bb482476c6c9d1ae033306440c51ceac93ea80c

These stripping patches has caused a set of issues:

1) People have reported compatibility issues with binutils due to
   lack of support for `--strip-unneeded-symbols' with objcopy 2.15.92.0.2
   Reported by: Wenji
2) ccache and distcc no longer works as expeced
   Reported by: Ted, Roland, + others
3) The installed modules increased a lot in size
   Reported by: Ted, Davej + others

Reported-by: Wenji Huang 
Reported-by: "Theodore Ts'o" 
Reported-by: Dave Jones 
Reported-by: Roland McGrath 
Signed-off-by: Sam Ravnborg

kbuild: strip generated symbols from *.ko

2008-12-19T21:41:15+00:00

This patch changes the way __crc_ symbols are being resolved from
using ld to do so to using the assembler, thus allowing these symbols
to be marked local (the linker creates then as global ones) and hence
allow stripping (for modules) or ignoring (for vmlinux) them. While at
this, also strip other generated symbols during module installation.

One potentially debatable point is the handling of the flags passeed
to gcc when translating the intermediate assembly file into an object:
passing $(c_flags) unchanged doesn't work as gcc passes --gdwarf2 to
gas whenever is sees any -g* option, even for -g0, and despite the
fact that the compiler would have already produced all necessary debug
info in the C->assembly translation phase. I took the approach of just
filtering out all -g* options, but an alternative to such negative
filtering might be to have a positive filter which might, in the ideal
case allow just all the -Wa,* options to pass through.

Signed-off-by: Jan Beulich 
Signed-off-by: Sam Ravnborg