Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1365071
| From | "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 14/31] lib: bch: use parity32 |
| Date | 2016-03-27 09:10 +0200 |
| Message-ID | <rhcZH-4Ir-5@gated-at.bofh.it> (permalink) |
| References | <rg3ON-4FE-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>
Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>
---
lib/bch.c | 14 +-------------
1 file changed, 1 insertion(+), 13 deletions(-)
diff --git a/lib/bch.c b/lib/bch.c
index bc89dfe4..6c6e8d4 100644
--- a/lib/bch.c
+++ b/lib/bch.c
@@ -278,18 +278,6 @@ static inline int deg(unsigned int poly)
return fls(poly)-1;
}
-static inline int parity(unsigned int x)
-{
- /*
- * public domain code snippet, lifted from
- * http://www-graphics.stanford.edu/~seander/bithacks.html
- */
- x ^= x >> 1;
- x ^= x >> 2;
- x = (x & 0x11111111U) * 0x11111111U;
- return (x >> 28) & 1;
-}
-
/* Galois field basic operations: multiply, divide, inverse, etc. */
static inline unsigned int gf_mul(struct bch_control *bch, unsigned int a,
@@ -494,7 +482,7 @@ static int solve_linear_system(struct bch_control *bch, unsigned int *rows,
tmp = 0;
for (r = m-1; r >= 0; r--) {
mask = rows[r] & (tmp|1);
- tmp |= parity(mask) << (m-r);
+ tmp |= parity32(mask) << (m-r);
}
sol[p] = tmp >> 1;
}
--
2.5.5
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[PATCH 01/31] bitops: add parity functions Zhaoxiu Zeng <zhaoxiu.zeng@gmail.com> - 2016-03-24 04:10 +0100
Re: [PATCH 01/31] bitops: add parity functions Denys Vlasenko <dvlasenk@redhat.com> - 2016-03-24 09:40 +0100
Re: [PATCH 01/31] bitops: add parity functions Andrew Morton <akpm@linux-foundation.org> - 2016-03-24 23:30 +0100
Re: [PATCH 01/31] bitops: add parity functions Martin Kepplinger <martink@posteo.de> - 2016-03-26 23:10 +0100
Re: [PATCH 01/31] bitops: add parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 10:00 +0200
Re: [PATCH 01/31] bitops: add parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 05:40 +0200
Re: [PATCH 01/31] bitops: add parity functions Sam Ravnborg <sam@ravnborg.org> - 2016-03-27 14:50 +0200
Re: [PATCH 01/31] bitops: add parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 15:40 +0200
Re: [PATCH 01/31] bitops: add parity functions Sam Ravnborg <sam@ravnborg.org> - 2016-03-27 20:00 +0200
Re: [PATCH 01/31] bitops: add parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-03-28 04:50 +0200
Re: [PATCH 01/31] bitops: add parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-03-28 04:20 +0200
Re: [PATCH 01/31] bitops: add parity functions Sam Ravnborg <sam@ravnborg.org> - 2016-03-28 09:00 +0200
Re: [PATCH 01/31] bitops: add parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-03-29 04:30 +0200
Re: [PATCH 01/31] bitops: add parity functions Joe Perches <joe@perches.com> - 2016-03-29 05:00 +0200
[PATCH 02/31] Include generic parity.h in some architectures' bitops.h "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 06:10 +0200
[PATCH 03/31] Add alpha-specific parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 07:50 +0200
Re: [PATCH 03/31] Add alpha-specific parity functions Richard Henderson <rth@twiddle.net> - 2016-03-28 20:40 +0200
[PATCH 04/31] Add avr32-specific parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 07:50 +0200
Re: [PATCH 04/31] Add avr32-specific parity functions Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> - 2016-03-28 22:10 +0200
[PATCH 05/31] Add blackfin-specific parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 08:00 +0200
[PATCH 07/31] Add mips-specific parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 08:10 +0200
Re: [PATCH 07/31] Add mips-specific parity functions David Daney <ddaney.cavm@gmail.com> - 2016-03-28 19:30 +0200
Re: [PATCH 07/31] Add mips-specific parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-03-29 04:20 +0200
[PATCH 06/31] Add ia64-specific parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 08:10 +0200
[PATCH 08/31] Add tile-specific parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 08:20 +0200
[PATCH 09/31] Add powerpc-specific parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 08:40 +0200
[PATCH 11/31] Add x86-specific parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 08:50 +0200
Re: [PATCH 11/31] Add x86-specific parity functions One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> - 2016-03-29 14:20 +0200
[PATCH 10/31] Add sparc-specific parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 08:50 +0200
Re: [PATCH 10/31] Add sparc-specific parity functions David Miller <davem@davemloft.net> - 2016-03-28 04:50 +0200
Re: [PATCH 10/31] Add sparc-specific parity functions Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com> - 2016-03-28 07:50 +0200
Re: [PATCH 10/31] Add sparc-specific parity functions David Miller <davem@davemloft.net> - 2016-03-28 17:30 +0200
Re: [PATCH 10/31] Add sparc-specific parity functions Sam Ravnborg <sam@ravnborg.org> - 2016-03-28 17:40 +0200
Re: [PATCH 10/31] Add sparc-specific parity functions David Miller <davem@davemloft.net> - 2016-03-28 17:50 +0200
[PATCH 12/31] sunrpc: auth_gss: use parity8 "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:00 +0200
[PATCH 13/31] mips: use parity functions in cerr-sb1.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:00 +0200
[PATCH 15/31] media: use parity8 in vivid-vbi-gen.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:10 +0200
[PATCH 14/31] lib: bch: use parity32 "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:10 +0200
[PATCH 17/31] input: joystick: use parity32 in grip_mp.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:20 +0200
[PATCH 18/31] input: joystick: use parity64 in sidewinder.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:20 +0200
[PATCH 16/31] media: saa7115: use parity functions "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:20 +0200
[PATCH 19/31] input: serio: use parity16 in ams_delta_serio.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:20 +0200
[PATCH 22/31] mtd: use parity functions in inftlcore.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:30 +0200
[PATCH 21/31] mtd: use parity16 in ssfdc.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:30 +0200
Re: [PATCH 21/31] mtd: use parity16 in ssfdc.c Brian Norris <computersforpeace@gmail.com> - 2016-04-02 01:50 +0200
[PATCH 20/31] scsi: use parity32 in isci/phy.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:30 +0200
[PATCH 26/31] input: serio: use parity8 in pcips2.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:40 +0200
[PATCH 25/31] ethernet: use parity8 in sun/niu.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:40 +0200
Re: [PATCH 25/31] ethernet: use parity8 in sun/niu.c Michal Nazarewicz <mina86@mina86.com> - 2016-03-28 16:40 +0200
[PATCH 24/31] mtd: use parity16 in sm_ftl.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:40 +0200
[PATCH 23/31] crypto: qat: use parity functions in qat_hal.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:40 +0200
[PATCH 28/31] iio: gyro: use parity32 in adxrs450.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:50 +0200
Re: [PATCH 28/31] iio: gyro: use parity32 in adxrs450.c Jonathan Cameron <jic23@kernel.org> - 2016-03-28 10:40 +0200
Re: [PATCH 28/31] iio: gyro: use parity32 in adxrs450.c Lars-Peter Clausen <lars@metafoo.de> - 2016-03-28 11:30 +0200
[PATCH 29/31] serial: use parity32 in max3100.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:50 +0200
[PATCH 30/31] input: mouse: use parity8 in elantech "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:50 +0200
[PATCH 27/31] input: serio: use parity8 in sa1111ps2.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 09:50 +0200
[PATCH 31/31] ethernet: broadcom: use parity8 in tg3.c "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com> - 2016-03-27 10:00 +0200
csiph-web