2009-01-05 07:03:10 +00:00
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config 64BIT
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bool "64-bit kernel" if ARCH = "sparc"
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default ARCH = "sparc64"
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help
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SPARC is a family of RISC microprocessors designed and marketed by
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Sun Microsystems, incorporated. They are very widely found in Sun
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workstations and clones.
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Say yes to build a 64-bit kernel - formerly known as sparc64
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Say no to build a 32-bit kernel - formerly known as sparc
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2008-11-15 21:40:12 +00:00
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config SPARC
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bool
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default y
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2013-10-08 02:16:32 +00:00
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select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
|
2014-01-01 19:33:21 +00:00
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select ARCH_MIGHT_HAVE_PC_SERIO
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2010-06-29 02:44:50 +00:00
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select OF
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2010-10-11 03:42:33 +00:00
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select OF_PROMTREE
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2008-11-15 21:40:12 +00:00
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select HAVE_IDE
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select HAVE_OPROFILE
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2008-11-17 04:01:17 +00:00
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select HAVE_ARCH_KGDB if !SMP || SPARC64
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2008-11-15 21:40:12 +00:00
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select HAVE_ARCH_TRACEHOOK
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2016-05-21 00:00:16 +00:00
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select HAVE_EXIT_THREAD
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2012-10-08 23:28:16 +00:00
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select SYSCTL_EXCEPTION_TRACE
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2008-11-15 21:40:12 +00:00
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select RTC_CLASS
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select RTC_DRV_M48T59
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2015-06-12 03:10:17 +00:00
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select RTC_SYSTOHC
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2009-08-10 02:53:17 +00:00
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select HAVE_DMA_API_DEBUG
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2014-02-13 18:57:44 +00:00
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select HAVE_ARCH_JUMP_LABEL if SPARC64
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2011-04-18 11:25:44 +00:00
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select GENERIC_IRQ_SHOW
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2012-07-30 21:42:46 +00:00
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select ARCH_WANT_IPC_PARSE_VERSION
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2011-11-24 19:10:12 +00:00
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select GENERIC_PCI_IOMAP
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2012-03-23 22:01:51 +00:00
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select HAVE_NMI_WATCHDOG if SPARC64
|
2016-05-13 17:08:28 +00:00
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select HAVE_CBPF_JIT
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2012-10-08 23:28:13 +00:00
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select HAVE_DEBUG_BUGVERBOSE
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2012-04-20 13:05:56 +00:00
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select GENERIC_SMP_IDLE_THREAD
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2012-05-24 20:29:46 +00:00
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select GENERIC_CLOCKEVENTS
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2012-05-24 20:12:28 +00:00
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select GENERIC_STRNCPY_FROM_USER
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2012-05-26 18:14:27 +00:00
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select GENERIC_STRNLEN_USER
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2012-09-28 05:01:03 +00:00
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select MODULES_USE_ELF_RELA
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2012-11-26 04:12:10 +00:00
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select ODD_RT_SIGACTION
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2012-12-25 21:18:10 +00:00
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select OLD_SIGSUSPEND
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2014-08-08 21:23:25 +00:00
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select ARCH_HAS_SG_CHAIN
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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 00:03:57 +00:00
|
|
|
select CPU_NO_EFFICIENT_FFS
|
2016-06-23 22:10:13 +00:00
|
|
|
select HAVE_ARCH_HARDENED_USERCOPY
|
2016-11-02 16:36:32 +00:00
|
|
|
select PROVE_LOCKING_SMALL if PROVE_LOCKING
|
2008-11-15 21:40:12 +00:00
|
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|
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|
|
config SPARC32
|
2009-01-05 07:03:10 +00:00
|
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def_bool !64BIT
|
2011-12-27 20:46:53 +00:00
|
|
|
select GENERIC_ATOMIC64
|
2012-02-01 22:17:54 +00:00
|
|
|
select CLZ_TAB
|
2012-10-08 23:28:08 +00:00
|
|
|
select HAVE_UID16
|
2012-12-26 00:18:40 +00:00
|
|
|
select OLD_SIGACTION
|
2008-11-15 21:40:12 +00:00
|
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|
2008-11-17 04:01:17 +00:00
|
|
|
config SPARC64
|
2009-01-05 07:03:10 +00:00
|
|
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def_bool 64BIT
|
2008-11-17 04:01:17 +00:00
|
|
|
select HAVE_FUNCTION_TRACER
|
2010-04-07 11:41:33 +00:00
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|
|
select HAVE_FUNCTION_GRAPH_TRACER
|
2008-11-17 04:01:17 +00:00
|
|
|
select HAVE_KRETPROBES
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select HAVE_KPROBES
|
2011-07-26 00:12:21 +00:00
|
|
|
select HAVE_RCU_TABLE_FREE if SMP
|
2010-07-12 04:36:09 +00:00
|
|
|
select HAVE_MEMBLOCK
|
2011-12-08 18:22:08 +00:00
|
|
|
select HAVE_MEMBLOCK_NODE_MAP
|
2013-02-13 20:15:08 +00:00
|
|
|
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
|
2009-06-13 08:03:24 +00:00
|
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select HAVE_DYNAMIC_FTRACE
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select HAVE_FTRACE_MCOUNT_RECORD
|
2009-12-11 08:44:47 +00:00
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select HAVE_SYSCALL_TRACEPOINTS
|
2013-09-14 12:02:11 +00:00
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|
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select HAVE_CONTEXT_TRACKING
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2012-10-08 23:28:11 +00:00
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select HAVE_DEBUG_KMEMLEAK
|
2014-09-25 19:25:03 +00:00
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|
|
select SPARSE_IRQ
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2008-11-17 04:01:17 +00:00
|
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select RTC_DRV_CMOS
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select RTC_DRV_BQ4802
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select RTC_DRV_SUN4V
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select RTC_DRV_STARFIRE
|
perf: Do the big rename: Performance Counters -> Performance Events
Bye-bye Performance Counters, welcome Performance Events!
In the past few months the perfcounters subsystem has grown out its
initial role of counting hardware events, and has become (and is
becoming) a much broader generic event enumeration, reporting, logging,
monitoring, analysis facility.
Naming its core object 'perf_counter' and naming the subsystem
'perfcounters' has become more and more of a misnomer. With pending
code like hw-breakpoints support the 'counter' name is less and
less appropriate.
All in one, we've decided to rename the subsystem to 'performance
events' and to propagate this rename through all fields, variables
and API names. (in an ABI compatible fashion)
The word 'event' is also a bit shorter than 'counter' - which makes
it slightly more convenient to write/handle as well.
Thanks goes to Stephane Eranian who first observed this misnomer and
suggested a rename.
User-space tooling and ABI compatibility is not affected - this patch
should be function-invariant. (Also, defconfigs were not touched to
keep the size down.)
This patch has been generated via the following script:
FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')
sed -i \
-e 's/PERF_EVENT_/PERF_RECORD_/g' \
-e 's/PERF_COUNTER/PERF_EVENT/g' \
-e 's/perf_counter/perf_event/g' \
-e 's/nb_counters/nb_events/g' \
-e 's/swcounter/swevent/g' \
-e 's/tpcounter_event/tp_event/g' \
$FILES
for N in $(find . -name perf_counter.[ch]); do
M=$(echo $N | sed 's/perf_counter/perf_event/g')
mv $N $M
done
FILES=$(find . -name perf_event.*)
sed -i \
-e 's/COUNTER_MASK/REG_MASK/g' \
-e 's/COUNTER/EVENT/g' \
-e 's/\<event\>/event_id/g' \
-e 's/counter/event/g' \
-e 's/Counter/Event/g' \
$FILES
... to keep it as correct as possible. This script can also be
used by anyone who has pending perfcounters patches - it converts
a Linux kernel tree over to the new naming. We tried to time this
change to the point in time where the amount of pending patches
is the smallest: the end of the merge window.
Namespace clashes were fixed up in a preparatory patch - and some
stylistic fallout will be fixed up in a subsequent patch.
( NOTE: 'counters' are still the proper terminology when we deal
with hardware registers - and these sed scripts are a bit
over-eager in renaming them. I've undone some of that, but
in case there's something left where 'counter' would be
better than 'event' we can undo that on an individual basis
instead of touching an otherwise nicely automated patch. )
Suggested-by: Stephane Eranian <eranian@google.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Paul Mackerras <paulus@samba.org>
Reviewed-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <linux-arch@vger.kernel.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-21 10:02:48 +00:00
|
|
|
select HAVE_PERF_EVENTS
|
2009-09-21 14:08:49 +00:00
|
|
|
select PERF_USE_VMALLOC
|
2011-03-24 08:03:45 +00:00
|
|
|
select IRQ_PREFLOW_FASTEOI
|
2011-07-13 05:14:22 +00:00
|
|
|
select ARCH_HAVE_NMI_SAFE_CMPXCHG
|
2011-08-15 21:45:17 +00:00
|
|
|
select HAVE_C_RECORDMCOUNT
|
2012-04-25 20:13:43 +00:00
|
|
|
select NO_BOOTMEM
|
2014-02-25 09:16:24 +00:00
|
|
|
select HAVE_ARCH_AUDITSYSCALL
|
2014-06-06 17:53:16 +00:00
|
|
|
select ARCH_SUPPORTS_ATOMIC_RMW
|
2016-05-21 00:00:33 +00:00
|
|
|
select HAVE_NMI
|
2008-11-17 04:01:17 +00:00
|
|
|
|
2008-12-03 07:17:12 +00:00
|
|
|
config ARCH_DEFCONFIG
|
|
|
|
|
string
|
|
|
|
|
default "arch/sparc/configs/sparc32_defconfig" if SPARC32
|
|
|
|
|
default "arch/sparc/configs/sparc64_defconfig" if SPARC64
|
|
|
|
|
|
2015-03-19 02:15:28 +00:00
|
|
|
config ARCH_PROC_KCORE_TEXT
|
|
|
|
|
def_bool y
|
|
|
|
|
|
2016-10-28 17:12:40 +00:00
|
|
|
config ARCH_ATU
|
|
|
|
|
bool
|
|
|
|
|
default y if SPARC64
|
|
|
|
|
|
2016-10-28 17:12:45 +00:00
|
|
|
config ARCH_DMA_ADDR_T_64BIT
|
|
|
|
|
bool
|
|
|
|
|
default y if ARCH_ATU
|
|
|
|
|
|
2008-11-17 04:01:17 +00:00
|
|
|
config IOMMU_HELPER
|
|
|
|
|
bool
|
|
|
|
|
default y if SPARC64
|
|
|
|
|
|
|
|
|
|
config STACKTRACE_SUPPORT
|
|
|
|
|
bool
|
|
|
|
|
default y if SPARC64
|
|
|
|
|
|
|
|
|
|
config LOCKDEP_SUPPORT
|
|
|
|
|
bool
|
|
|
|
|
default y if SPARC64
|
|
|
|
|
|
2013-03-19 15:11:07 +00:00
|
|
|
config ARCH_HIBERNATION_POSSIBLE
|
|
|
|
|
def_bool y if SPARC64
|
|
|
|
|
|
2008-11-17 04:01:17 +00:00
|
|
|
config AUDIT_ARCH
|
|
|
|
|
bool
|
2008-12-06 06:18:40 +00:00
|
|
|
default y
|
2008-11-17 04:01:17 +00:00
|
|
|
|
|
|
|
|
config HAVE_SETUP_PER_CPU_AREA
|
|
|
|
|
def_bool y if SPARC64
|
|
|
|
|
|
2009-08-14 06:00:53 +00:00
|
|
|
config NEED_PER_CPU_EMBED_FIRST_CHUNK
|
2009-04-09 03:32:02 +00:00
|
|
|
def_bool y if SPARC64
|
|
|
|
|
|
2009-09-24 09:18:55 +00:00
|
|
|
config NEED_PER_CPU_PAGE_FIRST_CHUNK
|
|
|
|
|
def_bool y if SPARC64
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config MMU
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
|
|
|
|
config HIGHMEM
|
|
|
|
|
bool
|
2008-11-17 04:01:17 +00:00
|
|
|
default y if SPARC32
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-10 09:43:14 +00:00
|
|
|
config ZONE_DMA
|
|
|
|
|
bool
|
2008-11-17 04:01:17 +00:00
|
|
|
default y if SPARC32
|
2007-02-10 09:43:14 +00:00
|
|
|
|
2010-03-10 23:23:28 +00:00
|
|
|
config NEED_DMA_MAP_STATE
|
|
|
|
|
def_bool y
|
|
|
|
|
|
2010-05-26 21:44:32 +00:00
|
|
|
config NEED_SG_DMA_LENGTH
|
|
|
|
|
def_bool y
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config GENERIC_ISA_DMA
|
|
|
|
|
bool
|
2008-11-17 04:01:17 +00:00
|
|
|
default y if SPARC32
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-03-31 22:23:17 +00:00
|
|
|
config ARCH_SUPPORTS_DEBUG_PAGEALLOC
|
|
|
|
|
def_bool y if SPARC64
|
|
|
|
|
|
2015-04-14 22:46:05 +00:00
|
|
|
config PGTABLE_LEVELS
|
|
|
|
|
default 4 if 64BIT
|
|
|
|
|
default 3
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
source "init/Kconfig"
|
|
|
|
|
|
2008-10-19 03:27:21 +00:00
|
|
|
source "kernel/Kconfig.freezer"
|
|
|
|
|
|
2008-11-17 04:01:17 +00:00
|
|
|
menu "Processor type and features"
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
config SMP
|
2012-05-12 04:01:47 +00:00
|
|
|
bool "Symmetric multi-processing support"
|
2005-04-16 22:20:36 +00:00
|
|
|
---help---
|
|
|
|
|
This enables support for systems with more than one CPU. If you have
|
|
|
|
|
a system with only one CPU, say N. If you have a system with more
|
|
|
|
|
than one CPU, say Y.
|
|
|
|
|
|
2014-01-23 23:55:29 +00:00
|
|
|
If you say N here, the kernel will run on uni- and multiprocessor
|
2005-04-16 22:20:36 +00:00
|
|
|
machines, but will use only one CPU of a multiprocessor machine. If
|
|
|
|
|
you say Y here, the kernel will run on many, but not all,
|
2014-01-23 23:55:29 +00:00
|
|
|
uniprocessor machines. On a uniprocessor machine, the kernel
|
2005-04-16 22:20:36 +00:00
|
|
|
will run faster if you say N here.
|
|
|
|
|
|
|
|
|
|
People using multiprocessor machines who say Y here should also say
|
|
|
|
|
Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
|
|
|
|
|
Management" code will be disabled if you say Y here.
|
|
|
|
|
|
2008-02-03 13:50:21 +00:00
|
|
|
See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
|
|
|
|
|
available at <http://www.tldp.org/docs.html#howto>.
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
If you don't know what to do here, say N.
|
|
|
|
|
|
|
|
|
|
config NR_CPUS
|
2008-11-17 04:01:17 +00:00
|
|
|
int "Maximum number of CPUs"
|
2005-04-16 22:20:36 +00:00
|
|
|
depends on SMP
|
2008-11-17 04:01:17 +00:00
|
|
|
range 2 32 if SPARC32
|
|
|
|
|
range 2 1024 if SPARC64
|
|
|
|
|
default 32 if SPARC32
|
|
|
|
|
default 64 if SPARC64
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-11-17 04:01:17 +00:00
|
|
|
source kernel/Kconfig.hz
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
config RWSEM_GENERIC_SPINLOCK
|
|
|
|
|
bool
|
2008-11-17 04:01:17 +00:00
|
|
|
default y if SPARC32
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
config RWSEM_XCHGADD_ALGORITHM
|
|
|
|
|
bool
|
2008-11-17 04:01:17 +00:00
|
|
|
default y if SPARC64
|
2005-04-16 22:20:36 +00:00
|
|
|
|
[PATCH] bitops: sparc: use generic bitops
- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove ffz()
- remove __ffs()
- remove sched_find_first_bit()
- remove ffs()
- remove generic_fls()
- remove generic_fls64()
- remove generic_hweight{32,16,8}()
- remove find_{next,first}{,_zero}_bit()
- remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit()
- remove ext2_{set,clear}_bit_atomic()
- remove minix_{test,set,test_and_clear,test,find_first_zero}_bit()
Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Cc: William Lee Irwin III <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-26 09:39:39 +00:00
|
|
|
config GENERIC_HWEIGHT
|
|
|
|
|
bool
|
2013-03-12 20:35:19 +00:00
|
|
|
default y
|
[PATCH] bitops: sparc: use generic bitops
- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove ffz()
- remove __ffs()
- remove sched_find_first_bit()
- remove ffs()
- remove generic_fls()
- remove generic_fls64()
- remove generic_hweight{32,16,8}()
- remove find_{next,first}{,_zero}_bit()
- remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit()
- remove ext2_{set,clear}_bit_atomic()
- remove minix_{test,set,test_and_clear,test,find_first_zero}_bit()
Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Cc: William Lee Irwin III <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-26 09:39:39 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config GENERIC_CALIBRATE_DELAY
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
2005-09-06 00:48:42 +00:00
|
|
|
config ARCH_MAY_HAVE_PC_FDC
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
2007-05-29 08:11:57 +00:00
|
|
|
config EMULATED_CMPXCHG
|
|
|
|
|
bool
|
2008-11-17 04:01:17 +00:00
|
|
|
default y if SPARC32
|
2007-05-29 08:11:57 +00:00
|
|
|
help
|
|
|
|
|
Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
|
|
|
|
|
is emulated, and therefore it is not completely atomic.
|
|
|
|
|
|
2008-12-03 11:08:37 +00:00
|
|
|
# Makefile helpers
|
|
|
|
|
config SPARC32_SMP
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
depends on SPARC32 && SMP
|
|
|
|
|
|
|
|
|
|
config SPARC64_SMP
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
depends on SPARC64 && SMP
|
|
|
|
|
|
2009-11-28 01:33:43 +00:00
|
|
|
config EARLYFB
|
|
|
|
|
bool "Support for early boot text console"
|
|
|
|
|
default y
|
|
|
|
|
depends on SPARC64
|
|
|
|
|
help
|
|
|
|
|
Say Y here to enable a faster early framebuffer boot console.
|
|
|
|
|
|
2008-11-17 04:01:17 +00:00
|
|
|
config SECCOMP
|
|
|
|
|
bool "Enable seccomp to safely compute untrusted bytecode"
|
|
|
|
|
depends on SPARC64 && PROC_FS
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
This kernel feature is useful for number crunching applications
|
|
|
|
|
that may need to compute untrusted bytecode during their
|
|
|
|
|
execution. By using pipes or other transports made available to
|
|
|
|
|
the process as file descriptors supporting the read/write
|
|
|
|
|
syscalls, it's possible to isolate those applications in
|
|
|
|
|
their own address space using seccomp. Once seccomp is
|
|
|
|
|
enabled via /proc/<pid>/seccomp, it cannot be disabled
|
|
|
|
|
and the task is only allowed to execute a few safe syscalls
|
|
|
|
|
defined by each seccomp mode.
|
|
|
|
|
|
|
|
|
|
If unsure, say Y. Only embedded should say N here.
|
|
|
|
|
|
|
|
|
|
config HOTPLUG_CPU
|
|
|
|
|
bool "Support for hot-pluggable CPUs"
|
|
|
|
|
depends on SPARC64 && SMP
|
|
|
|
|
help
|
|
|
|
|
Say Y here to experiment with turning CPUs off and on. CPUs
|
|
|
|
|
can be controlled through /sys/devices/system/cpu/cpu#.
|
|
|
|
|
Say N if you want to disable CPU hotplug.
|
|
|
|
|
|
|
|
|
|
if SPARC64
|
|
|
|
|
source "drivers/cpufreq/Kconfig"
|
|
|
|
|
endif
|
|
|
|
|
|
|
|
|
|
config US3_MC
|
|
|
|
|
tristate "UltraSPARC-III Memory Controller driver"
|
|
|
|
|
depends on SPARC64
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
This adds a driver for the UltraSPARC-III memory controller.
|
|
|
|
|
Loading this driver allows exact mnemonic strings to be
|
|
|
|
|
printed in the event of a memory error, so that the faulty DIMM
|
|
|
|
|
on the motherboard can be matched to the error.
|
|
|
|
|
|
|
|
|
|
If in doubt, say Y, as this information can be very useful.
|
|
|
|
|
|
|
|
|
|
# Global things across all Sun machines.
|
|
|
|
|
config GENERIC_LOCKBREAK
|
2005-04-16 22:20:36 +00:00
|
|
|
bool
|
|
|
|
|
default y
|
2008-11-17 04:01:17 +00:00
|
|
|
depends on SPARC64 && SMP && PREEMPT
|
|
|
|
|
|
|
|
|
|
config NUMA
|
|
|
|
|
bool "NUMA support"
|
|
|
|
|
depends on SPARC64 && SMP
|
|
|
|
|
|
|
|
|
|
config NODES_SHIFT
|
|
|
|
|
int
|
|
|
|
|
default "4"
|
|
|
|
|
depends on NEED_MULTIPLE_NODES
|
|
|
|
|
|
|
|
|
|
# Some NUMA nodes have memory ranges that span
|
|
|
|
|
# other nodes. Even though a pfn is valid and
|
|
|
|
|
# between a node's start and end pfns, it may not
|
|
|
|
|
# reside on that node. See memmap_init_zone()
|
|
|
|
|
# for details.
|
|
|
|
|
config NODES_SPAN_OTHER_NODES
|
|
|
|
|
def_bool y
|
|
|
|
|
depends on NEED_MULTIPLE_NODES
|
|
|
|
|
|
|
|
|
|
config ARCH_SELECT_MEMORY_MODEL
|
|
|
|
|
def_bool y if SPARC64
|
|
|
|
|
|
|
|
|
|
config ARCH_SPARSEMEM_ENABLE
|
|
|
|
|
def_bool y if SPARC64
|
|
|
|
|
select SPARSEMEM_VMEMMAP_ENABLE
|
|
|
|
|
|
|
|
|
|
config ARCH_SPARSEMEM_DEFAULT
|
|
|
|
|
def_bool y if SPARC64
|
|
|
|
|
|
2016-10-28 17:12:40 +00:00
|
|
|
config FORCE_MAX_ZONEORDER
|
|
|
|
|
int "Maximum zone order"
|
|
|
|
|
default "13"
|
|
|
|
|
help
|
|
|
|
|
The kernel memory allocator divides physically contiguous memory
|
|
|
|
|
blocks into "zones", where each zone is a power of two number of
|
|
|
|
|
pages. This option selects the largest power of two that the kernel
|
|
|
|
|
keeps in the memory allocator. If you need to allocate very large
|
|
|
|
|
blocks of physically contiguous memory, then you may need to
|
|
|
|
|
increase this value.
|
|
|
|
|
|
|
|
|
|
This config option is actually maximum order plus one. For example,
|
|
|
|
|
a value of 13 means that the largest free memory block is 2^12 pages.
|
|
|
|
|
|
2008-11-17 04:01:17 +00:00
|
|
|
source "mm/Kconfig"
|
|
|
|
|
|
2013-03-19 15:11:07 +00:00
|
|
|
if SPARC64
|
|
|
|
|
source "kernel/power/Kconfig"
|
|
|
|
|
endif
|
|
|
|
|
|
2008-11-17 04:01:17 +00:00
|
|
|
config SCHED_SMT
|
|
|
|
|
bool "SMT (Hyperthreading) scheduler support"
|
|
|
|
|
depends on SPARC64 && SMP
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
SMT scheduler support improves the CPU scheduler's decision making
|
|
|
|
|
when dealing with SPARC cpus at a cost of slightly increased overhead
|
|
|
|
|
in some places. If unsure say N here.
|
|
|
|
|
|
|
|
|
|
config SCHED_MC
|
|
|
|
|
bool "Multi-core scheduler support"
|
|
|
|
|
depends on SPARC64 && SMP
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
Multi-core scheduler support improves the CPU scheduler's decision
|
|
|
|
|
making when dealing with multi-core CPU chips at a cost of slightly
|
|
|
|
|
increased overhead in some places. If unsure say N here.
|
|
|
|
|
|
|
|
|
|
source "kernel/Kconfig.preempt"
|
|
|
|
|
|
|
|
|
|
config CMDLINE_BOOL
|
|
|
|
|
bool "Default bootloader kernel arguments"
|
|
|
|
|
depends on SPARC64
|
|
|
|
|
|
|
|
|
|
config CMDLINE
|
|
|
|
|
string "Initial kernel command string"
|
|
|
|
|
depends on CMDLINE_BOOL
|
|
|
|
|
default "console=ttyS0,9600 root=/dev/sda1"
|
|
|
|
|
help
|
|
|
|
|
Say Y here if you want to be able to pass default arguments to
|
|
|
|
|
the kernel. This will be overridden by the bootloader, if you
|
|
|
|
|
use one (such as SILO). This is most useful if you want to boot
|
|
|
|
|
a kernel from TFTP, and want default options to be available
|
|
|
|
|
with having them passed on the command line.
|
|
|
|
|
|
|
|
|
|
NOTE: This option WILL override the PROM bootargs setting!
|
|
|
|
|
|
|
|
|
|
config SUN_PM
|
|
|
|
|
bool
|
|
|
|
|
default y if SPARC32
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
|
Enable power management and CPU standby features on supported
|
|
|
|
|
SPARC platforms.
|
|
|
|
|
|
2008-11-15 21:44:31 +00:00
|
|
|
config SPARC_LED
|
|
|
|
|
tristate "Sun4m LED driver"
|
2008-11-17 04:01:17 +00:00
|
|
|
depends on SPARC32
|
2008-11-15 21:44:31 +00:00
|
|
|
help
|
|
|
|
|
This driver toggles the front-panel LED on sun4m systems
|
|
|
|
|
in a user-specifiable manner. Its state can be probed
|
|
|
|
|
by reading /proc/led and its blinking mode can be changed
|
|
|
|
|
via writes to /proc/led
|
|
|
|
|
|
2008-11-17 04:01:17 +00:00
|
|
|
config SERIAL_CONSOLE
|
|
|
|
|
bool
|
|
|
|
|
depends on SPARC32
|
|
|
|
|
default y
|
|
|
|
|
---help---
|
|
|
|
|
If you say Y here, it will be possible to use a serial port as the
|
|
|
|
|
system console (the system console is the device which receives all
|
|
|
|
|
kernel messages and warnings and which allows logins in single user
|
|
|
|
|
mode). This could be useful if some terminal or printer is connected
|
|
|
|
|
to that serial port.
|
|
|
|
|
|
|
|
|
|
Even if you say Y here, the currently visible virtual console
|
|
|
|
|
(/dev/tty0) will still be used as the system console by default, but
|
|
|
|
|
you can alter that using a kernel command line option such as
|
|
|
|
|
"console=ttyS1". (Try "man bootparam" or see the documentation of
|
|
|
|
|
your boot loader (silo) about how to pass options to the kernel at
|
|
|
|
|
boot time.)
|
|
|
|
|
|
|
|
|
|
If you don't have a graphics card installed and you say Y here, the
|
|
|
|
|
kernel will automatically use the first serial line, /dev/ttyS0, as
|
|
|
|
|
system console.
|
|
|
|
|
|
|
|
|
|
If unsure, say N.
|
2008-11-15 21:44:31 +00:00
|
|
|
|
2009-08-17 00:13:29 +00:00
|
|
|
config SPARC_LEON
|
|
|
|
|
bool "Sparc Leon processor family"
|
|
|
|
|
depends on SPARC32
|
2013-04-09 12:29:26 +00:00
|
|
|
select USB_EHCI_BIG_ENDIAN_MMIO
|
|
|
|
|
select USB_EHCI_BIG_ENDIAN_DESC
|
2009-08-17 00:13:29 +00:00
|
|
|
---help---
|
|
|
|
|
If you say Y here if you are running on a SPARC-LEON processor.
|
|
|
|
|
The LEON processor is a synthesizable VHDL model of the
|
|
|
|
|
SPARC-v8 standard. LEON is part of the GRLIB collection of
|
|
|
|
|
IP cores that are distributed under GPL. GRLIB can be downloaded
|
|
|
|
|
from www.gaisler.com. You can download a sparc-linux cross-compilation
|
|
|
|
|
toolchain at www.gaisler.com.
|
|
|
|
|
|
2011-01-26 06:36:35 +00:00
|
|
|
if SPARC_LEON
|
|
|
|
|
menu "U-Boot options"
|
|
|
|
|
|
|
|
|
|
config UBOOT_LOAD_ADDR
|
|
|
|
|
hex "uImage Load Address"
|
|
|
|
|
default 0x40004000
|
|
|
|
|
---help---
|
|
|
|
|
U-Boot kernel load address, the address in physical address space
|
|
|
|
|
where u-boot will place the Linux kernel before booting it.
|
|
|
|
|
This address is normally the base address of main memory + 0x4000.
|
|
|
|
|
|
|
|
|
|
config UBOOT_FLASH_ADDR
|
|
|
|
|
hex "uImage.o Load Address"
|
|
|
|
|
default 0x00080000
|
|
|
|
|
---help---
|
|
|
|
|
Optional setting only affecting the uImage.o ELF-image used to
|
|
|
|
|
download the uImage file to the target using a ELF-loader other than
|
|
|
|
|
U-Boot. It may for example be used to download an uImage to FLASH with
|
|
|
|
|
the GRMON utility before even starting u-boot.
|
|
|
|
|
|
|
|
|
|
config UBOOT_ENTRY_ADDR
|
|
|
|
|
hex "uImage Entry Address"
|
|
|
|
|
default 0xf0004000
|
|
|
|
|
---help---
|
|
|
|
|
Do not change this unless you know what you're doing. This is
|
|
|
|
|
hardcoded by the SPARC32 and LEON port.
|
|
|
|
|
|
|
|
|
|
This is the virtual address u-boot jumps to when booting the Linux
|
|
|
|
|
Kernel.
|
|
|
|
|
|
|
|
|
|
endmenu
|
|
|
|
|
endif
|
|
|
|
|
|
2008-11-15 21:44:31 +00:00
|
|
|
endmenu
|
|
|
|
|
|
|
|
|
|
menu "Bus options (PCI etc.)"
|
|
|
|
|
config SBUS
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
|
|
|
|
config SBUSCHAR
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
|
2008-11-17 04:01:17 +00:00
|
|
|
config SUN_LDOMS
|
|
|
|
|
bool "Sun Logical Domains support"
|
|
|
|
|
depends on SPARC64
|
|
|
|
|
help
|
|
|
|
|
Say Y here is you want to support virtual devices via
|
|
|
|
|
Logical Domains.
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config PCI
|
|
|
|
|
bool "Support for PCI and PS/2 keyboard/mouse"
|
|
|
|
|
help
|
2008-11-17 04:01:17 +00:00
|
|
|
Find out whether your system includes a PCI bus. PCI is the name of
|
|
|
|
|
a bus system, i.e. the way the CPU talks to the other stuff inside
|
|
|
|
|
your box. If you say Y here, the kernel will include drivers and
|
|
|
|
|
infrastructure code to support PCI bus devices.
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
|
|
|
|
|
CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
|
|
|
|
|
All of these platforms are extremely obscure, so say N if unsure.
|
|
|
|
|
|
2008-11-17 04:01:17 +00:00
|
|
|
config PCI_DOMAINS
|
|
|
|
|
def_bool PCI if SPARC64
|
|
|
|
|
|
2007-07-10 16:54:40 +00:00
|
|
|
config PCI_SYSCALL
|
|
|
|
|
def_bool PCI
|
|
|
|
|
|
2011-05-23 21:04:46 +00:00
|
|
|
config PCIC_PCI
|
|
|
|
|
bool
|
2011-06-03 05:49:11 +00:00
|
|
|
depends on PCI && SPARC32 && !SPARC_LEON
|
2011-05-23 21:04:46 +00:00
|
|
|
default y
|
|
|
|
|
|
2011-05-23 21:04:47 +00:00
|
|
|
config LEON_PCI
|
|
|
|
|
bool
|
|
|
|
|
depends on PCI && SPARC_LEON
|
|
|
|
|
default y
|
|
|
|
|
|
2013-03-05 07:03:30 +00:00
|
|
|
config SPARC_GRPCI1
|
|
|
|
|
bool "GRPCI Host Bridge Support"
|
|
|
|
|
depends on LEON_PCI
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
|
|
|
|
|
PCI host controller is typically found in GRLIB SPARC32/LEON
|
|
|
|
|
systems. The driver has one property (all_pci_errors) controlled
|
|
|
|
|
from the bootloader that makes the GRPCI to generate interrupts
|
|
|
|
|
on detected PCI Parity and System errors.
|
|
|
|
|
|
2013-03-05 07:04:21 +00:00
|
|
|
config SPARC_GRPCI2
|
2011-05-23 21:04:48 +00:00
|
|
|
bool "GRPCI2 Host Bridge Support"
|
|
|
|
|
depends on LEON_PCI
|
|
|
|
|
default y
|
|
|
|
|
help
|
|
|
|
|
Say Y here to include the GRPCI2 Host Bridge Driver.
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
source "drivers/pci/Kconfig"
|
|
|
|
|
|
2008-11-24 05:50:16 +00:00
|
|
|
source "drivers/pcmcia/Kconfig"
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config SUN_OPENPROMFS
|
|
|
|
|
tristate "Openprom tree appears in /proc/openprom"
|
|
|
|
|
help
|
|
|
|
|
If you say Y, the OpenPROM device tree will be available as a
|
|
|
|
|
virtual file system, which you can mount to /proc/openprom by "mount
|
|
|
|
|
-t openpromfs none /proc/openprom".
|
|
|
|
|
|
|
|
|
|
To compile the /proc/openprom support as a module, choose M here: the
|
|
|
|
|
module will be called openpromfs.
|
|
|
|
|
|
|
|
|
|
Only choose N if you know in advance that you will not need to modify
|
|
|
|
|
OpenPROM settings on the running system.
|
|
|
|
|
|
sparc: fix MSI build failure on Sparc32
Commit ebd97be635 ('PCI: remove ARCH_SUPPORTS_MSI kconfig option')
removes the ARCH_SUPPORTS_MSI Kconfig option that allowed
architectures to indicate whether they support PCI MSI or not. Now,
PCI MSI support can be compiled in on any architecture thanks to the
use of weak functions thanks to 4287d824f265 ('PCI: use weak functions
for MSI arch-specific functions').
So, architecture specific code is now responsible to ensure that its
PCI MSI code builds in all cases, or be appropriately conditionally
compiled.
On Sparc, the MSI support is only provided for Sparc64, so the
ARCH_SUPPORTS_MSI kconfig option was only selected for SPARC64, and
not for the Sparc architecture as a whole. Therefore, removing
ARCH_SUPPORTS_MSI broke Sparc32 configurations with CONFIG_PCI_MSI=y,
because the Sparc-specific MSI code is not designed to be built on
Sparc32.
To solve this, this commit ensures that the Sparc MSI code is only
built on Sparc64. This is done thanks to a new Kconfig Makefile helper
option SPARC64_PCI_MSI, modeled after the existing SPARC64_PCI. The
SPARC64_PCI_MSI option is an hidden option that is true when both
Sparc64 PCI support is enabled and MSI is enabled. The
arch/sparc/kernel/pci_msi.c file is now only built when
SPARC64_PCI_MSI is true.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-11 10:32:05 +00:00
|
|
|
# Makefile helpers
|
2008-12-03 11:08:37 +00:00
|
|
|
config SPARC64_PCI
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
depends on SPARC64 && PCI
|
2005-06-23 07:10:18 +00:00
|
|
|
|
sparc: fix MSI build failure on Sparc32
Commit ebd97be635 ('PCI: remove ARCH_SUPPORTS_MSI kconfig option')
removes the ARCH_SUPPORTS_MSI Kconfig option that allowed
architectures to indicate whether they support PCI MSI or not. Now,
PCI MSI support can be compiled in on any architecture thanks to the
use of weak functions thanks to 4287d824f265 ('PCI: use weak functions
for MSI arch-specific functions').
So, architecture specific code is now responsible to ensure that its
PCI MSI code builds in all cases, or be appropriately conditionally
compiled.
On Sparc, the MSI support is only provided for Sparc64, so the
ARCH_SUPPORTS_MSI kconfig option was only selected for SPARC64, and
not for the Sparc architecture as a whole. Therefore, removing
ARCH_SUPPORTS_MSI broke Sparc32 configurations with CONFIG_PCI_MSI=y,
because the Sparc-specific MSI code is not designed to be built on
Sparc32.
To solve this, this commit ensures that the Sparc MSI code is only
built on Sparc64. This is done thanks to a new Kconfig Makefile helper
option SPARC64_PCI_MSI, modeled after the existing SPARC64_PCI. The
SPARC64_PCI_MSI option is an hidden option that is true when both
Sparc64 PCI support is enabled and MSI is enabled. The
arch/sparc/kernel/pci_msi.c file is now only built when
SPARC64_PCI_MSI is true.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-11 10:32:05 +00:00
|
|
|
config SPARC64_PCI_MSI
|
|
|
|
|
bool
|
|
|
|
|
default y
|
|
|
|
|
depends on SPARC64_PCI && PCI_MSI
|
|
|
|
|
|
2005-06-23 07:10:18 +00:00
|
|
|
endmenu
|
|
|
|
|
|
2008-11-15 21:43:49 +00:00
|
|
|
menu "Executable file formats"
|
|
|
|
|
|
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
|
|
2008-11-17 04:01:17 +00:00
|
|
|
config COMPAT
|
|
|
|
|
bool
|
|
|
|
|
depends on SPARC64
|
|
|
|
|
default y
|
|
|
|
|
select COMPAT_BINFMT_ELF
|
2012-10-08 23:28:08 +00:00
|
|
|
select HAVE_UID16
|
[PATCH v3] ipc: provide generic compat versions of IPC syscalls
When using the "compat" APIs, architectures will generally want to
be able to make direct syscalls to msgsnd(), shmctl(), etc., and
in the kernel we would want them to be handled directly by
compat_sys_xxx() functions, as is true for other compat syscalls.
However, for historical reasons, several of the existing compat IPC
syscalls do not do this. semctl() expects a pointer to the fourth
argument, instead of the fourth argument itself. msgsnd(), msgrcv()
and shmat() expect arguments in different order.
This change adds an ARCH_WANT_OLD_COMPAT_IPC config option that can be
set to preserve this behavior for ports that use it (x86, sparc, powerpc,
s390, and mips). No actual semantics are changed for those architectures,
and there is only a minimal amount of code refactoring in ipc/compat.c.
Newer architectures like tile (and perhaps future architectures such
as arm64 and unicore64) should not select this option, and thus can
avoid having any IPC-specific code at all in their architecture-specific
compat layer. In the same vein, if this option is not selected, IPC_64
mode is assumed, since that's what the <asm-generic> headers expect.
The workaround code in "tile" for msgsnd() and msgrcv() is removed
with this change; it also fixes the bug that shmat() and semctl() were
not being properly handled.
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2012-03-15 17:13:38 +00:00
|
|
|
select ARCH_WANT_OLD_COMPAT_IPC
|
2012-12-26 00:18:40 +00:00
|
|
|
select COMPAT_OLD_SIGACTION
|
2008-11-17 04:01:17 +00:00
|
|
|
|
|
|
|
|
config SYSVIPC_COMPAT
|
|
|
|
|
bool
|
|
|
|
|
depends on COMPAT && SYSVIPC
|
|
|
|
|
default y
|
|
|
|
|
|
2012-05-11 09:56:56 +00:00
|
|
|
config KEYS_COMPAT
|
|
|
|
|
def_bool y if COMPAT && KEYS
|
|
|
|
|
|
2008-11-15 21:43:49 +00:00
|
|
|
endmenu
|
|
|
|
|
|
2005-07-12 04:03:49 +00:00
|
|
|
source "net/Kconfig"
|
|
|
|
|
|
2005-06-23 07:10:18 +00:00
|
|
|
source "drivers/Kconfig"
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
source "drivers/sbus/char/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "fs/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "arch/sparc/Kconfig.debug"
|
|
|
|
|
|
|
|
|
|
source "security/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "crypto/Kconfig"
|
|
|
|
|
|
|
|
|
|
source "lib/Kconfig"
|
