- 30 3月, 2006 1 次提交
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由 Russ Anderson 提交于
Move __mca_table out of the __init section. Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 29 3月, 2006 3 次提交
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由 Satoru Takeuchi 提交于
Some condition checks on iosapic_check_gsi_range() can be omitted because always `base <= end' is assured. This patch simplifies those checks. Signed-off-by: NSatoru Takeuchi <takeuchi_satoru@jp.fujitsu.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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由 Satoru Takeuchi 提交于
This patch corrects some wrong comments and a printk message. It also fixes some minor things, and makes all lines fit in 80 columns. Signed-off-by: NSatoru Takeuchi <takeuchi_satoru@jp.fujitsu.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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由 Dean Roe 提交于
Fix a for-loop in sn_hwperf_geoid_to_cnode(). It needs to loop over num_cnodes to ensure it can still process TIO nodes in addition to compute nodes on systems with many nodes. Interim fix until better support for many (>265) nodes is complete. Signed-off-by: NDean Roe <roe@sgi.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 28 3月, 2006 3 次提交
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由 hawkes@sgi.com 提交于
Eliminate an unnecessary -- and flawed -- use of the expensive num_online_cpus(). Signed-off-by: NJohn Hawkes <hawkes@sgi.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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由 Chen, Kenneth W 提交于
It was reported from a field customer that global spin lock ptcg_lock is giving a lot of grief on munmap performance running on a large numa machine. What appears to be a problem coming from flush_tlb_range(), which currently unconditionally calls platform_global_tlb_purge(). For some of the numa machines in existence today, this function is mapped into ia64_global_tlb_purge(), which holds ptcg_lock spin lock while executing ptc.ga instruction. Here is a patch that attempt to avoid global tlb purge whenever possible. It will use local tlb purge as much as possible. Though the conditions to use local tlb purge is pretty restrictive. One of the side effect of having flush tlb range instruction on ia64 is that kernel don't get a chance to clear out cpu_vm_mask. On ia64, this mask is sticky and it will accumulate if process bounces around. Thus diminishing the possible use of ptc.l. Thoughts? Signed-off-by: NKen Chen <kenneth.w.chen@intel.com> Acked-by: NJack Steiner <steiner@sgi.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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由 Zhang, Yanmin 提交于
Function lazy_mmu_prot_update is also used on huge pages when it is called by set_huge_ptep_writable, but it isn't aware of huge pages. Signed-off-by: NZhang Yanmin <yanmin.zhang@intel.com> Acked-by: NKen Chen <kenneth.w.chen@intel.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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- 27 3月, 2006 33 次提交
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由 Manfred Spraul 提交于
Ingo's sem2mutex patch incorrectly replaced one reference to ipc/sem.c with ipc/mutex.c in a comment. Signed-off-by: NManfred Spraul <manfred@colorfullife.com> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: drivers/char/ftape/lowlevel/fdc-io.c: Correct a comment Kconfig help: MTD_JEDECPROBE already supports Intel Remove ugly debugging stuff do_mounts.c: Minor ROOT_DEV comment cleanup BUG_ON() Conversion in drivers/s390/block/dasd_devmap.c BUG_ON() Conversion in mm/mempool.c BUG_ON() Conversion in mm/memory.c BUG_ON() Conversion in kernel/fork.c BUG_ON() Conversion in ipc/sem.c BUG_ON() Conversion in fs/ext2/ BUG_ON() Conversion in fs/hfs/ BUG_ON() Conversion in fs/dcache.c BUG_ON() Conversion in fs/buffer.c BUG_ON() Conversion in input/serio/hp_sdc_mlc.c BUG_ON() Conversion in md/dm-table.c BUG_ON() Conversion in md/dm-path-selector.c BUG_ON() Conversion in drivers/isdn BUG_ON() Conversion in drivers/char BUG_ON() Conversion in drivers/mtd/
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由 Bastien Roucaries 提交于
This patch correct a comment about cli(). Signed-off-by: NBastien Roucaries <roucaries.bastien@gmail.com> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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由 Adrian Bunk 提交于
Intel chips are already supported. Signed-off-by: NAdrian Bunk <bunk@stusta.de> Acked-by: NDavid Woodhouse <dwmw2@infradead.org>
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由 Akinobu Mita 提交于
<linux@horizon.com> wrote: This is an extremely well-known technique. You can see a similar version that uses a multiply for the last few steps at http://graphics.stanford.edu/~seander/bithacks.html#CountBitsSetParallel whch refers to "Software Optimization Guide for AMD Athlon 64 and Opteron Processors" http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/25112.PDF It's section 8.6, "Efficient Implementation of Population-Count Function in 32-bit Mode", pages 179-180. It uses the name that I am more familiar with, "popcount" (population count), although "Hamming weight" also makes sense. Anyway, the proof of correctness proceeds as follows: b = a - ((a >> 1) & 0x55555555); c = (b & 0x33333333) + ((b >> 2) & 0x33333333); d = (c + (c >> 4)) & 0x0f0f0f0f; #if SLOW_MULTIPLY e = d + (d >> 8) f = e + (e >> 16); return f & 63; #else /* Useful if multiply takes at most 4 cycles */ return (d * 0x01010101) >> 24; #endif The input value a can be thought of as 32 1-bit fields each holding their own hamming weight. Now look at it as 16 2-bit fields. Each 2-bit field a1..a0 has the value 2*a1 + a0. This can be converted into the hamming weight of the 2-bit field a1+a0 by subtracting a1. That's what the (a >> 1) & mask subtraction does. Since there can be no borrows, you can just do it all at once. Enumerating the 4 possible cases: 0b00 = 0 -> 0 - 0 = 0 0b01 = 1 -> 1 - 0 = 1 0b10 = 2 -> 2 - 1 = 1 0b11 = 3 -> 3 - 1 = 2 The next step consists of breaking up b (made of 16 2-bir fields) into even and odd halves and adding them into 4-bit fields. Since the largest possible sum is 2+2 = 4, which will not fit into a 4-bit field, the 2-bit ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ "which will not fit into a 2-bit field" fields have to be masked before they are added. After this point, the masking can be delayed. Each 4-bit field holds a population count from 0..4, taking at most 3 bits. These numbers can be added without overflowing a 4-bit field, so we can compute c + (c >> 4), and only then mask off the unwanted bits. This produces d, a number of 4 8-bit fields, each in the range 0..8. From this point, we can shift and add d multiple times without overflowing an 8-bit field, and only do a final mask at the end. The number to mask with has to be at least 63 (so that 32 on't be truncated), but can also be 128 or 255. The x86 has a special encoding for signed immediate byte values -128..127, so the value of 255 is slower. On other processors, a special "sign extend byte" instruction might be faster. On a processor with fast integer multiplies (Athlon but not P4), you can reduce the final few serially dependent instructions to a single integer multiply. Consider d to be 3 8-bit values d3, d2, d1 and d0, each in the range 0..8. The multiply forms the partial products: d3 d2 d1 d0 d3 d2 d1 d0 d3 d2 d1 d0 + d3 d2 d1 d0 ---------------------- e3 e2 e1 e0 Where e3 = d3 + d2 + d1 + d0. e2, e1 and e0 obviously cannot generate any carries. Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Artem B. Bityuckiy 提交于
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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由 Akinobu Mita 提交于
By defining generic hweight*() routines - hweight64() will be defined on all architectures - hweight_long() will use architecture optimized hweight32() or hweight64() I found two possible cleanups by these reasons. Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
generic_{ffs,fls,fls64,hweight{64,32,16,8}}() were moved into include/asm-generic/bitops.h. So all architectures don't use them. Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
Now the only user who are using generic_ffs() is ntfs filesystem. This patch isolates generic_ffs() as ntfs_ffs() for ntfs. Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Anton Altaparmakov <aia21@cantab.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
The find_*_bit() routines are defined to work on a pointer to unsigned long. But partial_page.bitmap is unsigned int and it is passed to find_*_bit() in arch/ia64/ia32/sys_ia32.c. So the compiler will print warnings. This patch changes to unsigned long instead. Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
The test_bit() routines are defined to work on a pointer to unsigned long. But thread_info.flags is __u32 (unsigned int) on sh and it is passed to flag set/clear/test wrappers in include/linux/thread_info.h. So the compiler will print warnings. This patch changes to unsigned long instead. Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
Currently include/asm-generic/bitops.h is not referenced from anywhere. But it will be the benefit of those who are trying to port Linux to another architecture. So update it by same manner Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove {,test_and_}{set,clear,change}_bit() - remove __{,test_and_}{set,clear,change}_bit() and test_bit() - remove generic_fls64() - remove find_{next,first}{,_zero}_bit() - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() - remove generic_hweight{32,16,8}() - remove sched_find_first_bit() - remove minix_{test,set,test_and_clear,test,find_first_zero}_bit() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove sched_find_first_bit() - remove generic_hweight{64,32,16,8}() - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() - remove minix_{test,set,test_and_clear,test,find_first_zero}_bit() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove ffz() - remove find_{next,first}{,_zero}_bit() - remove generic_ffs() - remove generic_fls() - remove generic_fls64() - remove __ffs() - remove sched_find_first_bit() - remove generic_hweight{32,16,8}() - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() - remove minix_{test,set,test_and_clear,test,find_first_zero}_bit() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove __{,test_and_}{set,clear,change}_bit() and test_bit() - remove ffz() - remove __ffs() - remove generic_fls() - remove generic_fls64() - remove sched_find_first_bit() - remove ffs() - unless defined(ULTRA_HAS_POPULATION_COUNT) - remove generic_hweight{64,32,16,8}() - remove find_{next,first}{,_zero}_bit() - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() - remove minix_{test,set,test_and_clear,test,find_first_zero}_bit() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- 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: NAkinobu Mita <mita@miraclelinux.com> Cc: William Lee Irwin III <wli@holomorphy.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove __{,test_and_}{set,clear,change}_bit() and test_bit() - remove __ffs() - remove find_{next,first}{,_zero}_bit() - remove generic_hweight{32,16,8}() - remove sched_find_first_bit() - remove generic_ffs() - 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() - remove generic_fls() - remove generic_fls64() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Richard Curnow <rc@rc0.org.uk> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove __{,test_and_}{set,clear,change}_bit() and test_bit() - remove find_{next,first}{,_zero}_bit() - remove generic_ffs() - remove generic_hweight{32,16,8}() - remove sched_find_first_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() - remove generic_fls() - remove generic_fls64() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove generic_ffs() - remove generic_fls() - remove generic_fls64() - remove generic_hweight{64,32,16,8}() - remove minix_{test,set,test_and_clear,test,find_first_zero}_bit() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove __{,test_and_}{set,clear,change}_bit() and test_bit() - remove generic_fls64() - remove generic_hweight{64,32,16,8}() - remove sched_find_first_bit() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove __{,test_and_}{set,clear,change}_bit() and test_bit() - remove ffz() - remove generic_fls64() - remove generic_hweight{32,16,8}() - remove generic_hweight64() - remove sched_find_first_bit() - remove find_{next,first}{,_zero}_bit() - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove __{,test_and_}{set,clear,change}_bit() and test_bit() - unless defined(CONFIG_CPU_MIPS32) or defined(CONFIG_CPU_MIPS64) - remove __ffs() - remove ffs() - remove ffz() - remove fls() - remove fls64() - remove find_{next,first}{,_zero}_bit() - remove sched_find_first_bit() - remove generic_hweight64() - remove generic_hweight{32,16,8}() - 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: NAkinobu Mita <mita@miraclelinux.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove ffs() - remove __ffs() - remove sched_find_first_bit() - remove ffz() - remove find_{next,first}{,_zero}_bit() - remove generic_hweight() - remove minix_{test,set,test_and_clear,test,find_first_zero}_bit() - remove generic_fls() - remove generic_fls64() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Greg Ungerer <gerg@uclinux.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
Build fix for ppc Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
This patch reverts ext2 bitmap functions. Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove generic_fls64() - remove sched_find_first_bit() - remove generic_hweight() - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove __{,test_and_}{set,clear,change}_bit() and test_bit() - remove ffz() - remove find_{next,first}{,_zero}_bit() - remove __ffs() - remove generic_fls() - remove generic_fls64() - remove sched_find_first_bit() - remove generic_ffs() - remove generic_hweight{32,16,8}() - 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: NAkinobu Mita <mita@miraclelinux.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove generic_fls64() - remove find_{next,first}{,_zero}_bit() - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() - remove minix_{test,set,test_and_clear,test,find_first_zero}_bit() - remove sched_find_first_bit() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove generic_fls64() - remove sched_find_first_bit() - remove generic_hweight{32,16,8}() - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() - remove minix_{test,set,test_and_clear,test,find_first_zero}_bit() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove generic_ffs() - remove find_{next,first}{,_zero}_bit() - remove sched_find_first_bit() - remove generic_hweight{32,16,8}() - 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() - remove generic_fls() - remove generic_fls64() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove ffz() - remove find_{next,first}{,_zero}_bit() - remove generic_ffs() - remove __ffs() - remove generic_fls64() - remove sched_find_first_bit() - remove generic_hweight{32,16,8}() - remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit() - remove minix_{test,set,test_and_clear,test,find_first_zero}_bit() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Akinobu Mita 提交于
- remove __{,test_and_}{set,clear,change}_bit() and test_bit() - 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 minix_{test,set,test_and_clear,test,find_first_zero}_bit() - remove sched_find_first_bit() Signed-off-by: NAkinobu Mita <mita@miraclelinux.com> Acked-by: NMikael Starvik <starvik@axis.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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