Re: [PATCH v7 2/4] lib/test_bitmap.c: Add for_each_set_clump test cases
On 6/7/20 7:15 AM, Syed Nayyar Waris wrote:
On Fri, Jun 5, 2020 at 5:54 PM Andy Shevchenko
wrote:
On Fri, Jun 05, 2020 at 02:12:54AM +0530, Syed Nayyar Waris wrote:
On Sun, May 31, 2020 at 12:50 AM kbuild test robot wrote:
WARNING: modpost: lib/test_bitmap.o(.data+0xe80): Section mismatch in reference
from the variable clump_test_data to the variable .init.rodata:clump_exp1
The variable clump_test_data references
the variable __initconst clump_exp1
If the reference is valid then annotate the
variable with or __refdata (see linux/init.h) or name the variable:
--
WARNING: modpost: lib/test_bitmap.o(.data+0xec8): Section mismatch in reference
from the variable clump_test_data to the variable .init.rodata:clump_exp2
The variable clump_test_data references
the variable __initconst clump_exp2
If the reference is valid then annotate the
variable with or __refdata (see linux/init.h) or name the variable:
--
WARNING: modpost: lib/test_bitmap.o(.data+0xf10): Section mismatch in reference
from the variable clump_test_data to the variable .init.rodata:clump_exp3
The variable clump_test_data references
the variable __initconst clump_exp3
If the reference is valid then annotate the
variable with or __refdata (see linux/init.h) or name the variable:
--
WARNING: modpost: lib/test_bitmap.o(.data+0xf58): Section mismatch in reference
from the variable clump_test_data to the variable .init.rodata:clump_exp4
The variable clump_test_data references
the variable __initconst clump_exp4
If the reference is valid then annotate the
variable with or __refdata (see linux/init.h) or name the variable:
I am unable to reproduce the compilation warning.
You have to enable section mismatch checker.
I ran the command:
make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' lib/
But the compilation warning didn't show up. Can anyone please point to me
what I am doing wrong here? How shall I reproduce the warning? Thanks !
You put some data into init section of the object, while you are trying to
access it from non-init one. It's easy-to-fix issue.
--
With Best Regards,
Andy Shevchenko
Thanks! I have made code changes for the above warning. Actually I am
still unable to reproduce the compilation warning. But I believe the
following code fix will fix the compilation warning:
In file lib/test_bitmap.c
@@ -692,7 +692,7 @@ struct clump_test_data_params {
unsigned long const *exp;
};
-struct clump_test_data_params clump_test_data[] =
+static struct clump_test_data_params clump_test_data[] __initdata =
{ {{0}, 2, 0, 64, 8, clump_exp1},
{{0}, 8, 2, 240, 24, clump_exp2},
{{0}, 8, 10, 240, 30, clump_exp3},
Let me know if I should submit a new patchset (v8) for
'for_each_set_clump' including above code fix.
Just to share how I attempted to reproduce the warning (but unsuccessful):
Step 1: Use the config file in attachment. Download, extract, rename
file to .config at the root of the tree.
Step 2: '$ make lib/'
No warning reproduced after above step 2.
Step 3: '$ make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix
-D__CHECK_ENDIAN__' lib/'
After step 3 I got error in build:
scripts/kconfig/conf --syncconfig Kconfig
CHECK scripts/mod/empty.c
No such file: asan-globals=1
scripts/Makefile.build:266: recipe for target 'scripts/mod/empty.o' failed
make[1]: *** [scripts/mod/empty.o] Error 1
Makefile:1147: recipe for target 'prepare0' failed
make: *** [prepare0] Error 2
The command in above step 3 was mentioned in the bot mail.
Regards
Syed Nayyar Waris
Hi Syed Nayyar Waris,
We can reproduce the warning with the steps in original report,
you may need to build the whole kernel instead of the 'lib'.
Best Regards,
Rong Chen
Re: [PATCH v7 2/4] lib/test_bitmap.c: Add for_each_set_clump test cases
On Sun, Jun 07, 2020 at 04:45:19AM +0530, Syed Nayyar Waris wrote:
> On Fri, Jun 5, 2020 at 5:54 PM Andy Shevchenko
> wrote:
> >
> > On Fri, Jun 05, 2020 at 02:12:54AM +0530, Syed Nayyar Waris wrote:
> > > On Sun, May 31, 2020 at 12:50 AM kbuild test robot wrote:
> >
> > > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xe80): Section mismatch
> > > > >> in reference from the variable clump_test_data to the variable
> > > > >> .init.rodata:clump_exp1
> > > > The variable clump_test_data references
> > > > the variable __initconst clump_exp1
> > > > If the reference is valid then annotate the
> > > > variable with or __refdata (see linux/init.h) or name the variable:
> > > >
> > > > --
> > > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xec8): Section mismatch
> > > > >> in reference from the variable clump_test_data to the variable
> > > > >> .init.rodata:clump_exp2
> > > > The variable clump_test_data references
> > > > the variable __initconst clump_exp2
> > > > If the reference is valid then annotate the
> > > > variable with or __refdata (see linux/init.h) or name the variable:
> > > >
> > > > --
> > > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xf10): Section mismatch
> > > > >> in reference from the variable clump_test_data to the variable
> > > > >> .init.rodata:clump_exp3
> > > > The variable clump_test_data references
> > > > the variable __initconst clump_exp3
> > > > If the reference is valid then annotate the
> > > > variable with or __refdata (see linux/init.h) or name the variable:
> > > >
> > > > --
> > > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xf58): Section mismatch
> > > > >> in reference from the variable clump_test_data to the variable
> > > > >> .init.rodata:clump_exp4
> > > > The variable clump_test_data references
> > > > the variable __initconst clump_exp4
> > > > If the reference is valid then annotate the
> > > > variable with or __refdata (see linux/init.h) or name the variable:
> >
> > > I am unable to reproduce the compilation warning.
> >
> > You have to enable section mismatch checker.
> >
> > > I ran the command:
> > > make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' lib/
> > >
> > > But the compilation warning didn't show up. Can anyone please point to me
> > > what I am doing wrong here? How shall I reproduce the warning? Thanks !
> >
> > You put some data into init section of the object, while you are trying to
> > access it from non-init one. It's easy-to-fix issue.
> >
> > --
> > With Best Regards,
> > Andy Shevchenko
>
> Thanks! I have made code changes for the above warning. Actually I am
> still unable to reproduce the compilation warning. But I believe the
> following code fix will fix the compilation warning:
>
> In file lib/test_bitmap.c
>
> @@ -692,7 +692,7 @@ struct clump_test_data_params {
> unsigned long const *exp;
> };
>
> -struct clump_test_data_params clump_test_data[] =
> +static struct clump_test_data_params clump_test_data[] __initdata =
> { {{0}, 2, 0, 64, 8, clump_exp1},
> {{0}, 8, 2, 240, 24, clump_exp2},
> {{0}, 8, 10, 240, 30, clump_exp3},
>
>
>
> Let me know if I should submit a new patchset (v8) for
> 'for_each_set_clump' including above code fix.
>
> Just to share how I attempted to reproduce the warning (but unsuccessful):
>
> Step 1: Use the config file in attachment. Download, extract, rename
> file to .config at the root of the tree.
> Step 2: '$ make lib/'
> No warning reproduced after above step 2.
> Step 3: '$ make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix
> -D__CHECK_ENDIAN__' lib/'
> After step 3 I got error in build:
> scripts/kconfig/conf --syncconfig Kconfig
> CHECK scripts/mod/empty.c
> No such file: asan-globals=1
> scripts/Makefile.build:266: recipe for target 'scripts/mod/empty.o' failed
> make[1]: *** [scripts/mod/empty.o] Error 1
> Makefile:1147: recipe for target 'prepare0' failed
> make: *** [prepare0] Error 2
>
> The command in above step 3 was mentioned in the bot mail.
You need to take their configuration as well.
--
With Best Regards,
Andy Shevchenko
Re: [PATCH v7 2/4] lib/test_bitmap.c: Add for_each_set_clump test cases
On Fri, Jun 5, 2020 at 5:54 PM Andy Shevchenko
wrote:
>
> On Fri, Jun 05, 2020 at 02:12:54AM +0530, Syed Nayyar Waris wrote:
> > On Sun, May 31, 2020 at 12:50 AM kbuild test robot wrote:
>
> > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xe80): Section mismatch in
> > > >> reference from the variable clump_test_data to the variable
> > > >> .init.rodata:clump_exp1
> > > The variable clump_test_data references
> > > the variable __initconst clump_exp1
> > > If the reference is valid then annotate the
> > > variable with or __refdata (see linux/init.h) or name the variable:
> > >
> > > --
> > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xec8): Section mismatch in
> > > >> reference from the variable clump_test_data to the variable
> > > >> .init.rodata:clump_exp2
> > > The variable clump_test_data references
> > > the variable __initconst clump_exp2
> > > If the reference is valid then annotate the
> > > variable with or __refdata (see linux/init.h) or name the variable:
> > >
> > > --
> > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xf10): Section mismatch in
> > > >> reference from the variable clump_test_data to the variable
> > > >> .init.rodata:clump_exp3
> > > The variable clump_test_data references
> > > the variable __initconst clump_exp3
> > > If the reference is valid then annotate the
> > > variable with or __refdata (see linux/init.h) or name the variable:
> > >
> > > --
> > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xf58): Section mismatch in
> > > >> reference from the variable clump_test_data to the variable
> > > >> .init.rodata:clump_exp4
> > > The variable clump_test_data references
> > > the variable __initconst clump_exp4
> > > If the reference is valid then annotate the
> > > variable with or __refdata (see linux/init.h) or name the variable:
>
> > I am unable to reproduce the compilation warning.
>
> You have to enable section mismatch checker.
>
> > I ran the command:
> > make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' lib/
> >
> > But the compilation warning didn't show up. Can anyone please point to me
> > what I am doing wrong here? How shall I reproduce the warning? Thanks !
>
> You put some data into init section of the object, while you are trying to
> access it from non-init one. It's easy-to-fix issue.
>
> --
> With Best Regards,
> Andy Shevchenko
Thanks! I have made code changes for the above warning. Actually I am
still unable to reproduce the compilation warning. But I believe the
following code fix will fix the compilation warning:
In file lib/test_bitmap.c
@@ -692,7 +692,7 @@ struct clump_test_data_params {
unsigned long const *exp;
};
-struct clump_test_data_params clump_test_data[] =
+static struct clump_test_data_params clump_test_data[] __initdata =
{ {{0}, 2, 0, 64, 8, clump_exp1},
{{0}, 8, 2, 240, 24, clump_exp2},
{{0}, 8, 10, 240, 30, clump_exp3},
Let me know if I should submit a new patchset (v8) for
'for_each_set_clump' including above code fix.
Just to share how I attempted to reproduce the warning (but unsuccessful):
Step 1: Use the config file in attachment. Download, extract, rename
file to .config at the root of the tree.
Step 2: '$ make lib/'
No warning reproduced after above step 2.
Step 3: '$ make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix
-D__CHECK_ENDIAN__' lib/'
After step 3 I got error in build:
scripts/kconfig/conf --syncconfig Kconfig
CHECK scripts/mod/empty.c
No such file: asan-globals=1
scripts/Makefile.build:266: recipe for target 'scripts/mod/empty.o' failed
make[1]: *** [scripts/mod/empty.o] Error 1
Makefile:1147: recipe for target 'prepare0' failed
make: *** [prepare0] Error 2
The command in above step 3 was mentioned in the bot mail.
Regards
Syed Nayyar Waris
Re: [PATCH v7 2/4] lib/test_bitmap.c: Add for_each_set_clump test cases
On Fri, Jun 05, 2020 at 02:12:54AM +0530, Syed Nayyar Waris wrote: > On Sun, May 31, 2020 at 12:50 AM kbuild test robot wrote: > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xe80): Section mismatch in > > >> reference from the variable clump_test_data to the variable > > >> .init.rodata:clump_exp1 > > The variable clump_test_data references > > the variable __initconst clump_exp1 > > If the reference is valid then annotate the > > variable with or __refdata (see linux/init.h) or name the variable: > > > > -- > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xec8): Section mismatch in > > >> reference from the variable clump_test_data to the variable > > >> .init.rodata:clump_exp2 > > The variable clump_test_data references > > the variable __initconst clump_exp2 > > If the reference is valid then annotate the > > variable with or __refdata (see linux/init.h) or name the variable: > > > > -- > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xf10): Section mismatch in > > >> reference from the variable clump_test_data to the variable > > >> .init.rodata:clump_exp3 > > The variable clump_test_data references > > the variable __initconst clump_exp3 > > If the reference is valid then annotate the > > variable with or __refdata (see linux/init.h) or name the variable: > > > > -- > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xf58): Section mismatch in > > >> reference from the variable clump_test_data to the variable > > >> .init.rodata:clump_exp4 > > The variable clump_test_data references > > the variable __initconst clump_exp4 > > If the reference is valid then annotate the > > variable with or __refdata (see linux/init.h) or name the variable: > I am unable to reproduce the compilation warning. You have to enable section mismatch checker. > I ran the command: > make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' lib/ > > But the compilation warning didn't show up. Can anyone please point to me > what I am doing wrong here? How shall I reproduce the warning? Thanks ! You put some data into init section of the object, while you are trying to access it from non-init one. It's easy-to-fix issue. -- With Best Regards, Andy Shevchenko
Re: [PATCH v7 2/4] lib/test_bitmap.c: Add for_each_set_clump test cases
On Sun, May 31, 2020 at 12:50 AM kbuild test robot wrote: > > Hi Syed, > > Thank you for the patch! Perhaps something to improve: > > [auto build test WARNING on b9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce] > > url: > https://github.com/0day-ci/linux/commits/Syed-Nayyar-Waris/Introduce-the-for_each_set_clump-macro/20200524-130931 > base:b9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce > config: x86_64-randconfig-s021-20200529 (attached as .config) > compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 > reproduce: > # apt-get install sparse > # sparse version: v0.6.1-243-gc100a7ab-dirty > # save the attached .config to linux build tree > make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kbuild test robot > > All warnings (new ones prefixed by >>, old ones prefixed by <<): > > >> WARNING: modpost: lib/test_bitmap.o(.data+0xe80): Section mismatch in > >> reference from the variable clump_test_data to the variable > >> .init.rodata:clump_exp1 > The variable clump_test_data references > the variable __initconst clump_exp1 > If the reference is valid then annotate the > variable with or __refdata (see linux/init.h) or name the variable: > > -- > >> WARNING: modpost: lib/test_bitmap.o(.data+0xec8): Section mismatch in > >> reference from the variable clump_test_data to the variable > >> .init.rodata:clump_exp2 > The variable clump_test_data references > the variable __initconst clump_exp2 > If the reference is valid then annotate the > variable with or __refdata (see linux/init.h) or name the variable: > > -- > >> WARNING: modpost: lib/test_bitmap.o(.data+0xf10): Section mismatch in > >> reference from the variable clump_test_data to the variable > >> .init.rodata:clump_exp3 > The variable clump_test_data references > the variable __initconst clump_exp3 > If the reference is valid then annotate the > variable with or __refdata (see linux/init.h) or name the variable: > > -- > >> WARNING: modpost: lib/test_bitmap.o(.data+0xf58): Section mismatch in > >> reference from the variable clump_test_data to the variable > >> .init.rodata:clump_exp4 > The variable clump_test_data references > the variable __initconst clump_exp4 > If the reference is valid then annotate the > variable with or __refdata (see linux/init.h) or name the variable: > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org HI All, Regarding the above compilation warning reported by bot. I think this is different than GENMASK. I am unable to reproduce the compilation warning. I ran the command: make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' lib/ But the compilation warning didn't show up. Can anyone please point to me what I am doing wrong here? How shall I reproduce the warning? Thanks ! Regards Syed Nayyar Waris
Re: [PATCH v7 2/4] lib/test_bitmap.c: Add for_each_set_clump test cases
Hi Syed, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on b9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce] url: https://github.com/0day-ci/linux/commits/Syed-Nayyar-Waris/Introduce-the-for_each_set_clump-macro/20200524-130931 base:b9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce config: x86_64-randconfig-s021-20200529 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-243-gc100a7ab-dirty # save the attached .config to linux build tree make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot All warnings (new ones prefixed by >>, old ones prefixed by <<): >> WARNING: modpost: lib/test_bitmap.o(.data+0xe80): Section mismatch in >> reference from the variable clump_test_data to the variable >> .init.rodata:clump_exp1 The variable clump_test_data references the variable __initconst clump_exp1 If the reference is valid then annotate the variable with or __refdata (see linux/init.h) or name the variable: -- >> WARNING: modpost: lib/test_bitmap.o(.data+0xec8): Section mismatch in >> reference from the variable clump_test_data to the variable >> .init.rodata:clump_exp2 The variable clump_test_data references the variable __initconst clump_exp2 If the reference is valid then annotate the variable with or __refdata (see linux/init.h) or name the variable: -- >> WARNING: modpost: lib/test_bitmap.o(.data+0xf10): Section mismatch in >> reference from the variable clump_test_data to the variable >> .init.rodata:clump_exp3 The variable clump_test_data references the variable __initconst clump_exp3 If the reference is valid then annotate the variable with or __refdata (see linux/init.h) or name the variable: -- >> WARNING: modpost: lib/test_bitmap.o(.data+0xf58): Section mismatch in >> reference from the variable clump_test_data to the variable >> .init.rodata:clump_exp4 The variable clump_test_data references the variable __initconst clump_exp4 If the reference is valid then annotate the variable with or __refdata (see linux/init.h) or name the variable: --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org .config.gz Description: application/gzip
[PATCH v7 2/4] lib/test_bitmap.c: Add for_each_set_clump test cases
The introduction of the generic for_each_set_clump macro need test
cases to verify the implementation. This patch adds test cases for
scenarios in which clump sizes are 8 bits, 24 bits, 30 bits and 6 bits.
The cases contain situations where clump is getting split at the word
boundary and also when zeroes are present in the start and middle of
bitmap.
Signed-off-by: Syed Nayyar Waris
Reviewed-by: Andy Shevchenko
Signed-off-by: William Breathitt Gray
---
Changes in v7:
- Minor changes: Use macro 'DECLARE_BITMAP()' and split 'struct'
definition and test data.
Changes in v6:
- Make 'for loop' inside 'test_for_each_set_clump' more succinct.
Changes in v5:
- No change.
Changes in v4:
- Use 'for' loop in test function of 'for_each_set_clump'.
Changes in v3:
- No Change.
Changes in v2:
- Unify different tests for 'for_each_set_clump'. Pass test data as
function parameters.
- Remove unnecessary bitmap_zero calls.
lib/test_bitmap.c | 144 ++
1 file changed, 144 insertions(+)
diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index 6b13150667f5..31b3cd920c93 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -155,6 +155,38 @@ static bool __init __check_eq_clump8(const char *srcfile,
unsigned int line,
return true;
}
+static bool __init __check_eq_clump(const char *srcfile, unsigned int line,
+ const unsigned int offset,
+ const unsigned int size,
+ const unsigned long *const clump_exp,
+ const unsigned long *const clump,
+ const unsigned long clump_size)
+{
+ unsigned long exp;
+
+ if (offset >= size) {
+ pr_warn("[%s:%u] bit offset for clump out-of-bounds: expected
less than %u, got %u\n",
+ srcfile, line, size, offset);
+ return false;
+ }
+
+ exp = clump_exp[offset / clump_size];
+ if (!exp) {
+ pr_warn("[%s:%u] bit offset for zero clump: expected nonzero
clump, got bit offset %u with clump value 0",
+ srcfile, line, offset);
+ return false;
+ }
+
+ if (*clump != exp) {
+ pr_warn("[%s:%u] expected clump value of 0x%lX, got clump value
of 0x%lX",
+ srcfile, line, exp, *clump);
+ return false;
+ }
+
+ return true;
+}
+
+
#define __expect_eq(suffix, ...) \
({ \
int result = 0; \
@@ -172,6 +204,7 @@ static bool __init __check_eq_clump8(const char *srcfile,
unsigned int line,
#define expect_eq_pbl(...) __expect_eq(pbl, ##__VA_ARGS__)
#define expect_eq_u32_array(...) __expect_eq(u32_array, ##__VA_ARGS__)
#define expect_eq_clump8(...) __expect_eq(clump8, ##__VA_ARGS__)
+#define expect_eq_clump(...) __expect_eq(clump, ##__VA_ARGS__)
static void __init test_zero_clear(void)
{
@@ -577,6 +610,28 @@ static void noinline __init test_mem_optimisations(void)
}
}
+static const unsigned long clump_bitmap_data[] __initconst = {
+ 0x38000201,
+ 0x05ff0f38,
+ 0xeffedcba,
+ 0xabcd,
+ 0x00aa,
+ 0x00aa,
+ 0x00ff,
+ 0xaa00,
+ 0xff00,
+ 0x00aa,
+ 0x,
+ 0x,
+ 0x,
+ 0x0f00,
+ 0x00ff,
+ 0xaa00,
+ 0xff00,
+ 0x00aa,
+ 0x0ac0,
+};
+
static const unsigned char clump_exp[] __initconst = {
0x01, /* 1 bit set */
0x02, /* non-edge 1 bit set */
@@ -588,6 +643,94 @@ static const unsigned char clump_exp[] __initconst = {
0x05, /* non-adjacent 2 bits set */
};
+static const unsigned long clump_exp1[] __initconst = {
+ 0x01, /* 1 bit set */
+ 0x02, /* non-edge 1 bit set */
+ 0x00, /* zero bits set */
+ 0x38, /* 3 bits set across 4-bit boundary */
+ 0x38, /* Repeated clump */
+ 0x0F, /* 4 bits set */
+ 0xFF, /* all bits set */
+ 0x05, /* non-adjacent 2 bits set */
+};
+
+static const unsigned long clump_exp2[] __initconst = {
+ 0xfedcba, /* 24 bits */
+ 0xabcdef,
+ 0xaa, /* Clump split between 2 words */
+ 0x00, /* zeroes in between */
+ 0xaa,
+ 0x00,
+ 0xff,
+ 0xaa,
+ 0x00,
+ 0xff,
+};
+
+static const unsigned long clump_exp3[] __initconst = {
+ 0x, /* starting with 0s*/
+ 0x, /* All 0s */
+ 0x,
+ 0x,
+ 0x3f0f, /* Non zero set */
+ 0x2aa80003,
+ 0x0aaa,
+ 0x3fc0,
+};
+
+static const
