License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 17:07:57 +03:00
|
|
|
# SPDX-License-Identifier: GPL-2.0
|
2012-10-09 13:54:32 +04:00
|
|
|
config METAG
|
|
|
|
|
def_bool y
|
|
|
|
|
select EMBEDDED
|
|
|
|
|
select GENERIC_ATOMIC64
|
|
|
|
|
select GENERIC_CLOCKEVENTS
|
|
|
|
|
select GENERIC_IRQ_SHOW
|
|
|
|
|
select GENERIC_SMP_IDLE_THREAD
|
|
|
|
|
select HAVE_64BIT_ALIGNED_ACCESS
|
|
|
|
|
select HAVE_ARCH_TRACEHOOK
|
2012-10-05 19:27:31 +04:00
|
|
|
select HAVE_C_RECORDMCOUNT
|
2012-10-09 13:54:32 +04:00
|
|
|
select HAVE_DEBUG_KMEMLEAK
|
2014-01-16 12:39:24 +04:00
|
|
|
select HAVE_DEBUG_STACKOVERFLOW
|
2012-10-05 19:27:31 +04:00
|
|
|
select HAVE_DYNAMIC_FTRACE
|
2016-05-21 03:00:16 +03:00
|
|
|
select HAVE_EXIT_THREAD
|
2012-10-05 19:27:31 +04:00
|
|
|
select HAVE_FTRACE_MCOUNT_RECORD
|
|
|
|
|
select HAVE_FUNCTION_TRACER
|
2012-10-09 13:54:32 +04:00
|
|
|
select HAVE_KERNEL_BZIP2
|
|
|
|
|
select HAVE_KERNEL_GZIP
|
|
|
|
|
select HAVE_KERNEL_LZO
|
|
|
|
|
select HAVE_KERNEL_XZ
|
|
|
|
|
select HAVE_MEMBLOCK
|
|
|
|
|
select HAVE_MEMBLOCK_NODE_MAP
|
|
|
|
|
select HAVE_MOD_ARCH_SPECIFIC
|
2013-03-15 14:21:56 +04:00
|
|
|
select HAVE_OPROFILE
|
2012-10-05 19:54:55 +04:00
|
|
|
select HAVE_PERF_EVENTS
|
2012-10-09 13:54:32 +04:00
|
|
|
select HAVE_SYSCALL_TRACEPOINTS
|
2013-03-15 08:34:17 +04:00
|
|
|
select HAVE_UNDERSCORE_SYMBOL_PREFIX
|
2012-10-09 13:54:32 +04:00
|
|
|
select IRQ_DOMAIN
|
2017-08-18 11:39:22 +03:00
|
|
|
select GENERIC_IRQ_EFFECTIVE_AFF_MASK
|
2012-10-09 13:54:32 +04:00
|
|
|
select MODULES_USE_ELF_RELA
|
|
|
|
|
select OF
|
|
|
|
|
select OF_EARLY_FLATTREE
|
|
|
|
|
select SPARSE_IRQ
|
lib/GCD.c: use binary GCD algorithm instead of Euclidean
The binary GCD algorithm is based on the following facts:
1. If a and b are all evens, then gcd(a,b) = 2 * gcd(a/2, b/2)
2. If a is even and b is odd, then gcd(a,b) = gcd(a/2, b)
3. If a and b are all odds, then gcd(a,b) = gcd((a-b)/2, b) = gcd((a+b)/2, b)
Even on x86 machines with reasonable division hardware, the binary
algorithm runs about 25% faster (80% the execution time) than the
division-based Euclidian algorithm.
On platforms like Alpha and ARMv6 where division is a function call to
emulation code, it's even more significant.
There are two variants of the code here, depending on whether a fast
__ffs (find least significant set bit) instruction is available. This
allows the unpredictable branches in the bit-at-a-time shifting loop to
be eliminated.
If fast __ffs is not available, the "even/odd" GCD variant is used.
I use the following code to benchmark:
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#define swap(a, b) \
do { \
a ^= b; \
b ^= a; \
a ^= b; \
} while (0)
unsigned long gcd0(unsigned long a, unsigned long b)
{
unsigned long r;
if (a < b) {
swap(a, b);
}
if (b == 0)
return a;
while ((r = a % b) != 0) {
a = b;
b = r;
}
return b;
}
unsigned long gcd1(unsigned long a, unsigned long b)
{
unsigned long r = a | b;
if (!a || !b)
return r;
b >>= __builtin_ctzl(b);
for (;;) {
a >>= __builtin_ctzl(a);
if (a == b)
return a << __builtin_ctzl(r);
if (a < b)
swap(a, b);
a -= b;
}
}
unsigned long gcd2(unsigned long a, unsigned long b)
{
unsigned long r = a | b;
if (!a || !b)
return r;
r &= -r;
while (!(b & r))
b >>= 1;
for (;;) {
while (!(a & r))
a >>= 1;
if (a == b)
return a;
if (a < b)
swap(a, b);
a -= b;
a >>= 1;
if (a & r)
a += b;
a >>= 1;
}
}
unsigned long gcd3(unsigned long a, unsigned long b)
{
unsigned long r = a | b;
if (!a || !b)
return r;
b >>= __builtin_ctzl(b);
if (b == 1)
return r & -r;
for (;;) {
a >>= __builtin_ctzl(a);
if (a == 1)
return r & -r;
if (a == b)
return a << __builtin_ctzl(r);
if (a < b)
swap(a, b);
a -= b;
}
}
unsigned long gcd4(unsigned long a, unsigned long b)
{
unsigned long r = a | b;
if (!a || !b)
return r;
r &= -r;
while (!(b & r))
b >>= 1;
if (b == r)
return r;
for (;;) {
while (!(a & r))
a >>= 1;
if (a == r)
return r;
if (a == b)
return a;
if (a < b)
swap(a, b);
a -= b;
a >>= 1;
if (a & r)
a += b;
a >>= 1;
}
}
static unsigned long (*gcd_func[])(unsigned long a, unsigned long b) = {
gcd0, gcd1, gcd2, gcd3, gcd4,
};
#define TEST_ENTRIES (sizeof(gcd_func) / sizeof(gcd_func[0]))
#if defined(__x86_64__)
#define rdtscll(val) do { \
unsigned long __a,__d; \
__asm__ __volatile__("rdtsc" : "=a" (__a), "=d" (__d)); \
(val) = ((unsigned long long)__a) | (((unsigned long long)__d)<<32); \
} while(0)
static unsigned long long benchmark_gcd_func(unsigned long (*gcd)(unsigned long, unsigned long),
unsigned long a, unsigned long b, unsigned long *res)
{
unsigned long long start, end;
unsigned long long ret;
unsigned long gcd_res;
rdtscll(start);
gcd_res = gcd(a, b);
rdtscll(end);
if (end >= start)
ret = end - start;
else
ret = ~0ULL - start + 1 + end;
*res = gcd_res;
return ret;
}
#else
static inline struct timespec read_time(void)
{
struct timespec time;
clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &time);
return time;
}
static inline unsigned long long diff_time(struct timespec start, struct timespec end)
{
struct timespec temp;
if ((end.tv_nsec - start.tv_nsec) < 0) {
temp.tv_sec = end.tv_sec - start.tv_sec - 1;
temp.tv_nsec = 1000000000ULL + end.tv_nsec - start.tv_nsec;
} else {
temp.tv_sec = end.tv_sec - start.tv_sec;
temp.tv_nsec = end.tv_nsec - start.tv_nsec;
}
return temp.tv_sec * 1000000000ULL + temp.tv_nsec;
}
static unsigned long long benchmark_gcd_func(unsigned long (*gcd)(unsigned long, unsigned long),
unsigned long a, unsigned long b, unsigned long *res)
{
struct timespec start, end;
unsigned long gcd_res;
start = read_time();
gcd_res = gcd(a, b);
end = read_time();
*res = gcd_res;
return diff_time(start, end);
}
#endif
static inline unsigned long get_rand()
{
if (sizeof(long) == 8)
return (unsigned long)rand() << 32 | rand();
else
return rand();
}
int main(int argc, char **argv)
{
unsigned int seed = time(0);
int loops = 100;
int repeats = 1000;
unsigned long (*res)[TEST_ENTRIES];
unsigned long long elapsed[TEST_ENTRIES];
int i, j, k;
for (;;) {
int opt = getopt(argc, argv, "n:r:s:");
/* End condition always first */
if (opt == -1)
break;
switch (opt) {
case 'n':
loops = atoi(optarg);
break;
case 'r':
repeats = atoi(optarg);
break;
case 's':
seed = strtoul(optarg, NULL, 10);
break;
default:
/* You won't actually get here. */
break;
}
}
res = malloc(sizeof(unsigned long) * TEST_ENTRIES * loops);
memset(elapsed, 0, sizeof(elapsed));
srand(seed);
for (j = 0; j < loops; j++) {
unsigned long a = get_rand();
/* Do we have args? */
unsigned long b = argc > optind ? strtoul(argv[optind], NULL, 10) : get_rand();
unsigned long long min_elapsed[TEST_ENTRIES];
for (k = 0; k < repeats; k++) {
for (i = 0; i < TEST_ENTRIES; i++) {
unsigned long long tmp = benchmark_gcd_func(gcd_func[i], a, b, &res[j][i]);
if (k == 0 || min_elapsed[i] > tmp)
min_elapsed[i] = tmp;
}
}
for (i = 0; i < TEST_ENTRIES; i++)
elapsed[i] += min_elapsed[i];
}
for (i = 0; i < TEST_ENTRIES; i++)
printf("gcd%d: elapsed %llu\n", i, elapsed[i]);
k = 0;
srand(seed);
for (j = 0; j < loops; j++) {
unsigned long a = get_rand();
unsigned long b = argc > optind ? strtoul(argv[optind], NULL, 10) : get_rand();
for (i = 1; i < TEST_ENTRIES; i++) {
if (res[j][i] != res[j][0])
break;
}
if (i < TEST_ENTRIES) {
if (k == 0) {
k = 1;
fprintf(stderr, "Error:\n");
}
fprintf(stderr, "gcd(%lu, %lu): ", a, b);
for (i = 0; i < TEST_ENTRIES; i++)
fprintf(stderr, "%ld%s", res[j][i], i < TEST_ENTRIES - 1 ? ", " : "\n");
}
}
if (k == 0)
fprintf(stderr, "PASS\n");
free(res);
return 0;
}
Compiled with "-O2", on "VirtualBox 4.4.0-22-generic #38-Ubuntu x86_64" got:
zhaoxiuzeng@zhaoxiuzeng-VirtualBox:~/develop$ ./gcd -r 500000 -n 10
gcd0: elapsed 10174
gcd1: elapsed 2120
gcd2: elapsed 2902
gcd3: elapsed 2039
gcd4: elapsed 2812
PASS
zhaoxiuzeng@zhaoxiuzeng-VirtualBox:~/develop$ ./gcd -r 500000 -n 10
gcd0: elapsed 9309
gcd1: elapsed 2280
gcd2: elapsed 2822
gcd3: elapsed 2217
gcd4: elapsed 2710
PASS
zhaoxiuzeng@zhaoxiuzeng-VirtualBox:~/develop$ ./gcd -r 500000 -n 10
gcd0: elapsed 9589
gcd1: elapsed 2098
gcd2: elapsed 2815
gcd3: elapsed 2030
gcd4: elapsed 2718
PASS
zhaoxiuzeng@zhaoxiuzeng-VirtualBox:~/develop$ ./gcd -r 500000 -n 10
gcd0: elapsed 9914
gcd1: elapsed 2309
gcd2: elapsed 2779
gcd3: elapsed 2228
gcd4: elapsed 2709
PASS
[akpm@linux-foundation.org: avoid #defining a CONFIG_ variable]
Signed-off-by: Zhaoxiu Zeng <zhaoxiu.zeng@gmail.com>
Signed-off-by: George Spelvin <linux@horizon.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-21 03:03:57 +03:00
|
|
|
select CPU_NO_EFFICIENT_FFS
|
2012-10-09 13:54:32 +04:00
|
|
|
|
|
|
|
|
config STACKTRACE_SUPPORT
|
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
|
|
config LOCKDEP_SUPPORT
|
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
|
|
config RWSEM_GENERIC_SPINLOCK
|
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
|
|
config RWSEM_XCHGADD_ALGORITHM
|
|
|
|
|
bool
|
|
|
|
|
|
|
|
|
|
config GENERIC_HWEIGHT
|
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
|
|
config GENERIC_CALIBRATE_DELAY
|
|
|
|
|
def_bool y
|
|
|
|
|
|
2014-04-08 02:39:19 +04:00
|
|
|
config NO_IOPORT_MAP
|
2012-10-09 13:54:32 +04:00
|
|
|
def_bool y
|
|
|
|
|
|
|
|
|
|
source "init/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "kernel/Kconfig.freezer"
|
|
|
|
|
|
|
|
|
|
menu "Processor type and features"
|
|
|
|
|
|
|
|
|
|
config MMU
|
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
|
|
config STACK_GROWSUP
|
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
|
|
config HOTPLUG_CPU
|
|
|
|
|
bool "Enable CPU hotplug support"
|
|
|
|
|
depends on SMP
|
|
|
|
|
help
|
|
|
|
|
Say Y here to allow turning CPUs off and on. CPUs can be
|
|
|
|
|
controlled through /sys/devices/system/cpu.
|
|
|
|
|
|
|
|
|
|
Say N if you want to disable CPU hotplug.
|
|
|
|
|
|
|
|
|
|
config HIGHMEM
|
|
|
|
|
bool "High Memory Support"
|
|
|
|
|
help
|
|
|
|
|
The address space of Meta processors is only 4 Gigabytes large
|
|
|
|
|
and it has to accommodate user address space, kernel address
|
|
|
|
|
space as well as some memory mapped IO. That means that, if you
|
|
|
|
|
have a large amount of physical memory and/or IO, not all of the
|
|
|
|
|
memory can be "permanently mapped" by the kernel. The physical
|
|
|
|
|
memory that is not permanently mapped is called "high memory".
|
|
|
|
|
|
|
|
|
|
Depending on the selected kernel/user memory split, minimum
|
|
|
|
|
vmalloc space and actual amount of RAM, you may not need this
|
|
|
|
|
option which should result in a slightly faster kernel.
|
|
|
|
|
|
|
|
|
|
If unsure, say n.
|
|
|
|
|
|
|
|
|
|
source "arch/metag/mm/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "arch/metag/Kconfig.soc"
|
|
|
|
|
|
|
|
|
|
config METAG_META12
|
|
|
|
|
bool
|
|
|
|
|
help
|
|
|
|
|
Select this from the SoC config symbol to indicate that it contains a
|
|
|
|
|
Meta 1.2 core.
|
|
|
|
|
|
|
|
|
|
config METAG_META21
|
|
|
|
|
bool
|
|
|
|
|
help
|
|
|
|
|
Select this from the SoC config symbol to indicate that it contains a
|
|
|
|
|
Meta 2.1 core.
|
|
|
|
|
|
|
|
|
|
config SMP
|
|
|
|
|
bool "Symmetric multi-processing support"
|
|
|
|
|
depends on METAG_META21 && METAG_META21_MMU
|
|
|
|
|
help
|
|
|
|
|
This enables support for systems with more than one thread running
|
|
|
|
|
Linux. If you have a system with only one thread running Linux,
|
|
|
|
|
say N. Otherwise, say Y.
|
|
|
|
|
|
|
|
|
|
config NR_CPUS
|
|
|
|
|
int "Maximum number of CPUs (2-4)" if SMP
|
|
|
|
|
range 2 4 if SMP
|
|
|
|
|
default "1" if !SMP
|
|
|
|
|
default "4" if SMP
|
|
|
|
|
|
|
|
|
|
config METAG_SMP_WRITE_REORDERING
|
|
|
|
|
bool
|
|
|
|
|
help
|
|
|
|
|
This attempts to prevent cache-memory incoherence due to external
|
|
|
|
|
reordering of writes from different hardware threads when SMP is
|
|
|
|
|
enabled. It adds fences (system event 0) to smp_mb and smp_rmb in an
|
|
|
|
|
attempt to catch some of the cases, and also before writes to shared
|
|
|
|
|
memory in LOCK1 protected atomics and spinlocks.
|
|
|
|
|
This will not completely prevent cache incoherency on affected cores.
|
|
|
|
|
|
|
|
|
|
config METAG_LNKGET_AROUND_CACHE
|
|
|
|
|
bool
|
|
|
|
|
depends on METAG_META21
|
|
|
|
|
help
|
|
|
|
|
This indicates that the LNKGET/LNKSET instructions go around the
|
|
|
|
|
cache, which requires some extra cache flushes when the memory needs
|
|
|
|
|
to be accessed by normal GET/SET instructions too.
|
|
|
|
|
|
|
|
|
|
choice
|
|
|
|
|
prompt "Atomicity primitive"
|
|
|
|
|
default METAG_ATOMICITY_LNKGET
|
|
|
|
|
help
|
|
|
|
|
This option selects the mechanism for performing atomic operations.
|
|
|
|
|
|
|
|
|
|
config METAG_ATOMICITY_IRQSOFF
|
|
|
|
|
depends on !SMP
|
|
|
|
|
bool "irqsoff"
|
|
|
|
|
help
|
|
|
|
|
This option disables interrupts to achieve atomicity. This mechanism
|
|
|
|
|
is not SMP-safe.
|
|
|
|
|
|
|
|
|
|
config METAG_ATOMICITY_LNKGET
|
|
|
|
|
depends on METAG_META21
|
|
|
|
|
bool "lnkget/lnkset"
|
|
|
|
|
help
|
|
|
|
|
This option uses the LNKGET and LNKSET instructions to achieve
|
|
|
|
|
atomicity. LNKGET/LNKSET are load-link/store-conditional instructions.
|
|
|
|
|
Choose this option if your system requires low latency.
|
|
|
|
|
|
|
|
|
|
config METAG_ATOMICITY_LOCK1
|
|
|
|
|
depends on SMP
|
|
|
|
|
bool "lock1"
|
|
|
|
|
help
|
|
|
|
|
This option uses the LOCK1 instruction for atomicity. This is mainly
|
|
|
|
|
provided as a debugging aid if the lnkget/lnkset atomicity primitive
|
|
|
|
|
isn't working properly.
|
|
|
|
|
|
|
|
|
|
endchoice
|
|
|
|
|
|
|
|
|
|
config METAG_FPU
|
|
|
|
|
bool "FPU Support"
|
|
|
|
|
depends on METAG_META21
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
This option allows processes to use FPU hardware available with this
|
|
|
|
|
CPU. If this option is not enabled FPU registers will not be saved
|
|
|
|
|
and restored on context-switch.
|
|
|
|
|
|
|
|
|
|
If you plan on running programs which are compiled to use hard floats
|
|
|
|
|
say Y here.
|
|
|
|
|
|
|
|
|
|
config METAG_DSP
|
|
|
|
|
bool "DSP Support"
|
|
|
|
|
help
|
|
|
|
|
This option allows processes to use DSP hardware available
|
|
|
|
|
with this CPU. If this option is not enabled DSP registers
|
|
|
|
|
will not be saved and restored on context-switch.
|
|
|
|
|
|
|
|
|
|
If you plan on running DSP programs say Y here.
|
|
|
|
|
|
|
|
|
|
config METAG_PERFCOUNTER_IRQS
|
|
|
|
|
bool "PerfCounters interrupt support"
|
|
|
|
|
depends on METAG_META21
|
|
|
|
|
help
|
|
|
|
|
This option enables using interrupts to collect information from
|
|
|
|
|
Performance Counters. This option is supported in new META21
|
|
|
|
|
(starting from HTP265).
|
|
|
|
|
|
|
|
|
|
When disabled, Performance Counters information will be collected
|
|
|
|
|
based on Timer Interrupt.
|
|
|
|
|
|
2013-03-15 14:21:56 +04:00
|
|
|
config HW_PERF_EVENTS
|
|
|
|
|
def_bool METAG_PERFCOUNTER_IRQS && PERF_EVENTS
|
|
|
|
|
|
2012-09-21 20:38:15 +04:00
|
|
|
config METAG_DA
|
|
|
|
|
bool "DA support"
|
|
|
|
|
help
|
|
|
|
|
Say Y if you plan to use a DA debug adapter with Linux. The presence
|
|
|
|
|
of the DA will be detected automatically at boot, so it is safe to say
|
|
|
|
|
Y to this option even when booting without a DA.
|
|
|
|
|
|
|
|
|
|
This enables support for services provided by DA JTAG debug adapters,
|
|
|
|
|
such as:
|
|
|
|
|
- communication over DA channels (such as the console driver).
|
|
|
|
|
- use of the DA filesystem.
|
|
|
|
|
|
2012-10-09 13:54:32 +04:00
|
|
|
menu "Boot options"
|
|
|
|
|
|
|
|
|
|
config METAG_BUILTIN_DTB
|
|
|
|
|
bool "Embed DTB in kernel image"
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
Embeds a device tree binary in the kernel image.
|
|
|
|
|
|
|
|
|
|
config METAG_BUILTIN_DTB_NAME
|
|
|
|
|
string "Built in DTB"
|
|
|
|
|
depends on METAG_BUILTIN_DTB
|
|
|
|
|
help
|
|
|
|
|
Set the name of the DTB to embed (leave blank to pick one
|
|
|
|
|
automatically based on kernel configuration).
|
|
|
|
|
|
|
|
|
|
config CMDLINE_BOOL
|
|
|
|
|
bool "Default bootloader kernel arguments"
|
|
|
|
|
|
|
|
|
|
config CMDLINE
|
|
|
|
|
string "Kernel command line"
|
|
|
|
|
depends on CMDLINE_BOOL
|
|
|
|
|
help
|
|
|
|
|
On some architectures there is currently no way for the boot loader
|
|
|
|
|
to pass arguments to the kernel. For these architectures, you should
|
|
|
|
|
supply some command-line options at build time by entering them
|
|
|
|
|
here.
|
|
|
|
|
|
|
|
|
|
config CMDLINE_FORCE
|
|
|
|
|
bool "Force default kernel command string"
|
|
|
|
|
depends on CMDLINE_BOOL
|
|
|
|
|
help
|
|
|
|
|
Set this to have arguments from the default kernel command string
|
|
|
|
|
override those passed by the boot loader.
|
|
|
|
|
|
|
|
|
|
endmenu
|
|
|
|
|
|
|
|
|
|
source "kernel/Kconfig.preempt"
|
|
|
|
|
|
|
|
|
|
source kernel/Kconfig.hz
|
|
|
|
|
|
|
|
|
|
endmenu
|
|
|
|
|
|
|
|
|
|
menu "Power management options"
|
|
|
|
|
|
|
|
|
|
source kernel/power/Kconfig
|
|
|
|
|
|
|
|
|
|
endmenu
|
|
|
|
|
|
|
|
|
|
menu "Executable file formats"
|
|
|
|
|
|
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
|
|
|
|
|
|
endmenu
|
|
|
|
|
|
|
|
|
|
source "net/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "drivers/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "fs/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "arch/metag/Kconfig.debug"
|
|
|
|
|
|
|
|
|
|
source "security/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "crypto/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "lib/Kconfig"
|
