Randy suggested to print out the symbol type in gconfig.
Note this change does more than Randy's suggestion, that it also
affects menuconfig and "make config".
│ Symbol: BLOCK [=y]
│ Type : boolean
│ Prompt: Enable the block layer
│ Defined at block/Kconfig:4
│ Depends on: EMBEDDED [=n]
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This patch has been around for a long time in Fedora and Red Hat Enterprise
Linux kernels and it may be useful for others. The nonint_oldconfig target
will fail and print the unset config options while loose_nonint_oldconfig will
simply let the config option unset. They're useful in distro kernel packages
where the config files are built using a combination of smaller config files.
Arjan van de Ven wrote the initial nonint_config and Roland McGrath added the
loose_nonint_oldconfig.
Signed-off-by: Arjan van de Ven <arjan@redhat.com> [defunct email]
Whatevered-by: Kyle McMartin <kyle@redhat.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Aristeu Rozanski <aris@redhat.com>
[mmarek: whitespace fixes]
Signed-off-by: Michal Marek <mmarek@suse.cz>
There's a button in gconfig to "Show all options", but I think
normally we are not interested in those configs which have no
prompt and thus can't be changed, so here I add a new button to
show hidden options which have prompts.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Usage:
Press <Z> to show all config symbols which have prompts.
Quote Tim Bird:
| I've been bitten by this numerous times. I most often
| use ftrace on ARM, but when I go back to x86, I almost
| always go through a sequence of searching for the
| function graph tracer in the menus, then realizing it's
| completely missing until I disable CC_OPTIMIZE_FOR_SIZE.
|
| Is there any way to have the menu item appear, but be
| unsettable unless the SIZE option is disabled? I'm
| not a Kconfig guru...
I myself found this useful too. For example, I need to test
ftrace/tracing and want to be sure all the tracing features are
enabled, so I enter the "Tracers" menu, and press <Z> to
see if there is any config hidden.
I also noticed gconfig and xconfig have a button "Show all options",
but that's a bit too much, and I think normally what we are not
interested in those configs which have no prompt thus can't be
changed by users.
Exmaple:
--- Tracers
-*- Kernel Function Tracer
- - Kernel Function Graph Tracer
[*] Interrupts-off Latency Tracer
- - Preemption-off Latency Tracer
[*] Sysprof Tracer
Here you can see 2 tracers are not selectable, and then can find
out how to make them selectable.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
zconfdump(), which is used for debugging, can't recognize P_SELECT,
P_RANGE and P_MENU (if associated with a symbol, aka "menuconfig"),
and output something like this:
config X86
boolean
default y
unknown prop 6!
unknown prop 6!
unknown prop 6!
...
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
- fix a typo in documentation
- fix a typo in a printk on error
- fix comments in dialog_inputbox()
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Expand the dependency set used for the initrd to include the
CONFIG_INITRAMFS_SOURCE file and the generator script itself.
Otherwise changing the initramfs file list does not rebuild the CPIO.
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
A symbol's value won't be recalc-ed until we save config file or
enter the menu where the symbol sits.
So If I enable OPTIMIZE_FOR_SIZE, and search FUNCTION_GRAPH_TRACER:
Symbol: FUNCTION_GRAPH_TRACER [=y]
Prompt: Kernel Function Graph Tracer
Defined at kernel/trace/Kconfig:140
Depends on: ... [=y] && (!X86_32 [=y] || !CC_OPTIMIZE_FOR_SIZE [=y])
...
From the dependency it should result in FUNCTION_GRAPH_TRACER=n,
but it still shows FUNCTION_GRAPH_TRACER=y.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Minor perlcritic warning:
headerdep.pl: "return" statement with explicit "undef" at line 84, column 2. See page 199 of PBP. (Severity: 5)
The rationale according to PBP is that an explicit return of undef
(contrary to most people's expectations) doesn't
always evaluate as false. It has to with the fact that perl return value
depends on context the function is called. If function is used in
list context, the appropriate return value for false is an empty list;
whereas in scalar context the return value for false is undefined.
By just using a "return" both cases are handled.
In the context of a trivial script this doesn't matter. But one script
may be cut-paste into later code (most people like me only know 50%
of perl), that is why perlcritic always complains
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
The output of LZO is not aligned with the other output:
...
CC drivers/usb/mon/usbmon.mod.o
LZO arch/mips/boot/compressed/vmlinux.lzo
...
This patch fixes it.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This reverts commit eb8f844c0a. Ian
Campbell writes:
> I keep my kernel source tree on a more powerful build box where I run my
> builds etc (including "make cscope") but run my editor from my
> workstation with an NFS mount to the source. This worked fine for me
> using relative paths for cscope. Using absolute paths in cscope breaks
> this previously working setup because the root path is not the same on
> both systems. I guess this is similar to moving the source tree around.
>
> Without wanting to start a flamewar it really sounds to me like we are
> working around a vim (or cscope) bug here, emacs with cscope bindings
> works fine in this configuration.
Given that absolute paths can be forced by make O=. cscope, change the
default back to relative paths.
Ian Campbell <ijc@hellion.org.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Better practice to use 3 arg open and local file handles.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: WANG Cong <amwang@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
According to PBP; best way practice is to use local reference for file
handle and three argument open. Also perl prototypes are a mistake.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: WANG Cong <amwang@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Use local file handles, use three argument open.
Don't modify arguments in perl grep (use sed instead)
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: WANG Cong <amwang@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Turn on strict checking.
Simplify code by using "unless" statement.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: WANG Cong <amwang@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Use local file handle not global.
Make loop and other variables local in scope.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Cc: Hui Zhu <teawater@gmail.com>
Cc: Cong Wang <amwang@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Turn on strict checking.
Use three arguement open
Standard practice in perl is to use undef not zero for false
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Cc: Cong Wang <amwang@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Turn on strict checking.
Use local file handles.
Use three argument open.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Cc: Cong Wang <amwang@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Cleanup checkstack script:
* Turn on strict checking
* Fix resulting error message because the declaration syntax
was incorrect.
* Remove incorrect and misleading use of prototype
- prototype not required for this type of sort function
because $a and $b are being used in this contex
- if prototype was being used it should be for both arguments
* Use closure for sort function
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Cong Wang <amwang@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This patch creates the standard md5sums file for 'make deb-pkg' just
like the dh_md5sums debhelper script.
Signed-off-by: Jozsef Fejes <fejes@joco.name>
Signed-off-by: Michal Marek <mmarek@suse.cz>
make ALLSOURCE_ARCHS=all tags
- Document this in kbuild.txt
Without this change you have to type each arch separately.
Signed-off-by: John Kacur <jkacur@redhat.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
$ make mrproper
$ make tags
GEN tags
find: `arch/x86_64/': No such file or directory
Caused by commit f81b1be (tags: include headers before source files)
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Currently looking up a structure definition in TAGS / tags takes one to
one of multiple "static struct X" definitions in arch sources, which makes
it for many structs practically impossible to get to the required header.
This patch changes the order of sources being tagged to first scan
architecture includes, then the top-level include/ directory, and only
then the rest. It also takes into account, that many architectures have
more than one include directory, i.e., not only arch/$ARCH/include, but
also arch/$ARCH/mach-X/include etc.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
[mmarek@suse.cz: fix 'var+=text' bashism]
Signed-off-by: Michal Marek <mmarek@suse.cz>
1. Fix a little format issue.
2. Check the return of "Getopt::Long::GetOptions". Output usage and
exit if it get error.
3. Change $ARGV[$#ARGV] to $ARGV[0].
4. Change the code which get $modulefile from modinfo. Replace the
pipeline with `modinfo -F filename $module`.
4. Change usage from "Specify the module directory name" to "Specify the
module filename".
Signed-off-by: Hui Zhu <teawater@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
The markup_oops.pl have 3 troubles to support cross-compiler environment:
1. It use objdump directly.
2. It use modinfo to get the message of module.
3. It use hex function that cannot support 64-bit number in 32-bit arch.
This patch add 3 options to markup_oops.pl:
1. -c CROSS_COMPILE Specify the prefix used for toolchain.
2. -m MODULE_DIRNAME Specify the module directory name.
3. Change hex function to Math::BigInt->from_hex.
After this patch, parse the x8664 oops in x86, we can:
cat amd64m | perl ~/kernel/tmp/m.pl -c /home/teawater/kernel/bin/x8664- -m ./e.ko vmlinux
Thanks,
Hui
Signed-off-by: Hui Zhu <teawater@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: ozan@pardus.org.tr
Cc: Matthew Wilcox <willy@linux.intel.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
The mkspec script hardcodes "/var/tmp" into the generated rpm spec file's
BuildRoot. The user, however, may have a custom setting for %_tmppath,
which should be used in BuildRoot. This patch changes mkspec's
BuildRoot output to appropriately use %_tmppath.
Signed-off-by: John Saalwaechter <saalwaechter@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
I got a "No matching code found" when I use markup_oops.pl parse a error
in a x86_64 module.
cat e.c
int init_module(void)
{
char *buf = 0;
buf[0] = 3;
return 0;
}
void cleanup_module(void)
{
//char *buf = 0;
//buf[0] = 3;
}
MODULE_AUTHOR("Hui Zhu");
MODULE_LICENSE("GPL");
0000000000000000 <init_module>:
init_module():
/home/teawater/study/kernel/stack2core/example/e.c:10
0: c6 04 25 00 00 00 00 movb $0x3,0x0
7: 03
/home/teawater/study/kernel/stack2core/example/e.c:13
8: 31 c0 xor %eax,%eax
a: c3 retq
b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
0000000000000010 <cleanup_module>:
cleanup_module():
/home/teawater/study/kernel/stack2core/example/e.c:20
10: f3 c3 repz retq
12: 90 nop
13: 90 nop
Disassembly of section .modinfo:
This is because the faulting instruction "movb $0x3,0x0" is the first
line of the range.
In the markup_oops.pl:
main::(./scripts/markup_oops.pl:245):
245: if (InRange($1, $target)) {
DB<2> p $line
ffffffffa001b000: c6 04 25 00 00 00 00 movb $0x3,0x0
DB<3> p $counter
0
It just set $center in next loop. So it cannot get the $center.
And even if $center is set to the right value 0.
if ($center == 0) {
print "No matching code found \n";
exit;
}
The first line $center will be 0, so I change the default value to -1.
Signed-off-by: Hui Zhu <teawater@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Just a small change to a couple of scripts to go from
#!/usr/bin/env python
to
#!/usr/bin/python
This shouldn't effect anyone, unless they don't install python there.
In preparation for python3, Fedora is doing a big push to change the scripts
to use the system python. This allows developers to put the python3 in
their path without fear of breaking existing scripts.
Now I am pretty sure anyone using python3 for testing purposes will probably
not run any of the scripts I changed, but Fedora has this automated tool
that checks for this stuff so I thought I would try to push it upstream.
Signed-off-by: Don Zickus <dzickus@redhat.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Acked-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Suppress a warn_unused_result warning.
fgets is called as a part of error handling. It is called just to drop a
line and return immediately. read_map is reading the file in a loop and
read_symbol reads line by line. So I think there is no point in using
return value for useful checking. Other checks like 3 items were returned
or !EOF have already been done.
Signed-off-by: Himanshu Chauhan <hschauhan@nulltrace.org>
Cc: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Don't test for /bin/{dnsdomainname,domainname}, simply try to execute
the command and check if it returned something.
Reported-by: Glenn Sommer <glemsom@gmail.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Tested-by: Glenn Sommer <glemsom@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
While looking for something else I noticed that the symbol
hash function used by kconfig is quite poor. It doesn't
use any of the standard hash techniques but simply
adds up the string and then uses power of two masking,
which is both known to perform poorly.
The current x86 kconfig has over 7000 symbols.
When I instrumented it showed that the minimum hash chain
length was 16 and a significant number of them was over
30.
It didn't help that the hash table size was only 256 buckets.
This patch increases the hash table size to a larger prime
and switches to a FNV32 hash. I played around with a couple of hash
functions, but that one seemed to perform best with reasonable
hash table sizes.
Increasing the hash table size even further didn't
seem like a good idea, because there are a couple of global
walks which walk the complete hash table.
I also moved the unnamed bucket to 0. It's still the longest
of all the buckets (44 entries), but hopefully it's not
often hit except for the global walk which doesn't care.
The result is a much nicer distribution:
(first column bucket length, second number of buckets with that length)
1: 3505
2: 1236
3: 294
4: 52
5: 3
47: 1 <--- this is the unnamed symbols bucket
There are still some 5+ buckets, but increasing the hash table
even more would be likely not worth it.
This also cleans up the code slightly by removing hard coded
magic numbers.
I didn't notice a big performance difference either way
on my Nehalem system, but I presume it'll help somewhat
on slower systems.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This patch fixes two problems reported by Jan Engelhardt:
1) Border is now properly placed, to always be visible
2) Long menu items are properly displayed
Reported-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Nir Tzachar <nir.tzachar@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
scripts/kconfig/nconf.gui.c:23: warning: no previous prototype for 'set_normal_colors'
scripts/kconfig/nconf.gui.c:68: warning: no previous prototype for 'normal_color_theme'
scripts/kconfig/nconf.gui.c💯 warning: no previous prototype for 'no_colors_theme'
scripts/kconfig/nconf.c:455: warning: no previous prototype for 'process_special_keys'
scripts/kconfig/nconf.c:487: warning: no previous prototype for 'get_next_hot'
scripts/kconfig/nconf.c:506: warning: no previous prototype for 'canbhot'
scripts/kconfig/nconf.c:514: warning: no previous prototype for 'is_hot'
scripts/kconfig/nconf.c:522: warning: no previous prototype for 'make_hot'
scripts/kconfig/nconf.c:582: warning: no previous prototype for 'item_make'
scripts/kconfig/nconf.c:626: warning: no previous prototype for 'item_add_str'
scripts/kconfig/nconf.c:656: warning: no previous prototype for 'item_tag'
scripts/kconfig/nconf.c:668: warning: no previous prototype for 'curses_item_index'
scripts/kconfig/nconf.c:673: warning: no previous prototype for 'item_data'
scripts/kconfig/nconf.c:684: warning: no previous prototype for 'item_is_tag'
scripts/kconfig/nconf.c:691: warning: no previous prototype for 'set_config_filename'
Signed-off-by: Michal Marek <mmarek@suse.cz>
This patch was inspired by the kernel projects page, where an ncurses
replacement for menuconfig was mentioned (by Sam Ravnborg).
Building on menuconfig, this patch implements a more modern look
interface using ncurses and ncurses' satellite libraries (menu, panel,
form). The implementation does not depend on lxdialog, which is
currently distributed with the kernel.
Signed-off-by: Nir Tzachar <nir.tzachar@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
It is the last place when the file is read, so close it.
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Help text for certain config options is very extensive (the text
includes the names of all other options the option in question depends
on). Long lines are not wrapped, making it impossible to see the list
without scrolling horizontally.
This patch adds some logic which wraps help screen lines at word
boundaries to prevent truncating.
Tested by running
ARCH=powerpc make menuconfig O=/tmp/build
which shows that the long lines are now wrapped, and
ARCH=powerpc make xconfig O=/tmp/build
to demonstrate that it still compiles and operates as expected.
Signed-off-by: Vadim Bendebury <vbendeb@google.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This patch adds support for decoding ARM oopses to scripts/decodecode.
The following things are handled:
- ARCH and CROSS_COMPILE environment variables are respected.
- The Code: in x86 oopses is in bytes, while it is in either words (4
bytes) or halfwords for ARM.
- Some versions of ARM objdump refuse to disassemble instructions
generated by literal constants (".word 0x..."). The workaround is to
strip the object file first.
- The faulting instruction is marked (liked so) in ARM, but <like so>
in x86.
- ARM mnemonics may include characters such as [] which need to be
escaped before being passed to sed for the "<- trapping instruction"
substitution.
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This patch fixes the link error "built-in.o: no such file or directory".
The problem happens if "dirx/Makefile" contains only "obj-m += diry/
dirz/" and the empty "dirx/built-in.o" is missing. Adding $(subdir-m)
into check for builtin-target fixes this error.
Signed-off-by: Jiafu He <jay@goldhive.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Either the functions referred to in a driver struct should live in
.devinit or the driver should be registered using platform_driver_probe
(or equivalent for different driver types) with ->probe being NULL.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
The sym_is() compares a symbol in an attempt to automatically skip symbol
prefixes. It does this first by searching the real symbol with the normal
unprefixed symbol. But then it uses the length of the original symbol to
check the end of the substring instead of the length of the symbol it is
looking for. On non-prefixed arches, this is effectively the same thing,
so there is no problem. On prefixed-arches, since this is exceeds by just
one byte, a crash is rare and it is usually a NUL byte anyways. But every
once in a blue moon, you get the right page alignment and it segfaults.
For example, on the Blackfin arch, sym_is() will be called with the real
symbol "___mod_usb_device_table" as "symbol" when looking for the normal
symbol "__mod_usb_device_table" as "name". The substring will thus return
one byte into "symbol" and store it into "match". But then "match" will
be indexed with the length of "symbol" instead of "name" and so we will
exceed the storage. i.e. the code ends up doing:
char foo[] = "abc"; return foo[strlen(foo)+1] == '\0';
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
