Eric Dumazet 21371f768b [SOCK] Avoid divides in sk_stream_pages() and __sk_stream_mem_reclaim() ...

sk_forward_alloc being signed, we should take care of divides by
SK_STREAM_MEM_QUANTUM we do in sk_stream_pages() and
__sk_stream_mem_reclaim()

This patchs introduces SK_STREAM_MEM_QUANTUM_SHIFT, defined
as ilog2(SK_STREAM_MEM_QUANTUM), to be able to use right
shifts instead of plain divides.

This should help compiler to choose right shifts instead of
expensive divides (as seen with CONFIG_CC_OPTIMIZE_FOR_SIZE=y on x86)

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2008-01-28 15:00:05 -08:00

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acpi

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asm-alpha

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asm-arm

Merge branch 'pxa-plat' into devel

2008-01-28 13:21:38 +00:00

asm-avr32

[ARM] 4764/1: [AT91] AT91CAP9 core support

2008-01-26 15:01:13 +00:00

asm-blackfin

[Blackfin] arch: Add the semtimedop syscall. Upstream uClibc doesn't compile without it.

2008-01-27 19:56:43 +08:00

asm-cris

ide: remove stale ide.h "configuration options"

2008-01-25 22:17:08 +01:00

asm-frv

ide: remove stale ide.h "configuration options"

2008-01-25 22:17:08 +01:00

asm-generic

sched: SCHED_FIFO/SCHED_RR watchdog timer

2008-01-25 21:08:27 +01:00

asm-h8300

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asm-ia64

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asm-m32r

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asm-m68k

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asm-m68knommu

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asm-mips

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asm-parisc

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asm-powerpc

ide: remove stale ide.h "configuration options"

2008-01-25 22:17:08 +01:00

asm-ppc

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asm-s390

[S390] do local_irq_restore while spinning in spin_lock_irqsave.

2008-01-26 14:11:31 +01:00

asm-sh

sh: add spi header and r2d platform data V3

2008-01-28 16:24:46 +09:00

asm-sparc

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asm-sparc64

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asm-um

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asm-v850

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asm-x86

sched: high-res preemption tick

2008-01-25 21:08:29 +01:00

asm-xtensa

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crypto

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keys

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linux

cfg80211/nl80211: implement station attribute retrieval

2008-01-28 14:59:52 -08:00

math-emu

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media

i2c: Constify client address data

2008-01-27 18:14:46 +01:00

mtd

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net

[SOCK] Avoid divides in sk_stream_pages() and __sk_stream_mem_reclaim()

2008-01-28 15:00:05 -08:00

pcmcia

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rdma

RDMA/cma: add support for rdma_migrate_id()

2008-01-25 14:15:32 -08:00

rxrpc

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scsi

SG: Convert SCSI to use scatterlist helpers for sg chaining

2008-01-28 10:05:27 +01:00

sound

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video

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xen

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Kbuild

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