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path: root/include/asm-mips/cacheflush.h
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2008-04-08[MIPS] Handle aliases in vmalloc correctly.Ralf Baechle1-2/+16
flush_cache_vmap / flush_cache_vunmap were calling flush_cache_all which - having been deprecated - turned into a nop ... Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12[MIPS] Fix loads of section missmatchesRalf Baechle1-1/+1
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-04-27[MIPS] Remove unused argument from kunmap_coherent().Ralf Baechle1-1/+1
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-03-24[MIPS] Implement flush_anon_page().Ralf Baechle1-0/+12
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-13[PATCH] Optimize D-cache alias handling on forkRalf Baechle1-0/+2
Virtually index, physically tagged cache architectures can get away without cache flushing when forking. This patch adds a new cache flushing function flush_cache_dup_mm(struct mm_struct *) which for the moment I've implemented to do the same thing on all architectures except on MIPS where it's a no-op. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-22[MIPS] Fix aliasing bug in copy_to_user_page / copy_from_user_pageRalf Baechle1-15/+4
The current implementation uses a sequence of a cacheflush and a copy. This is racy in case of a multithreaded debuggee and renders GDB virtually unusable. Aside this fixes a performance hog rendering access to /proc/cmdline very slow and resulting in a enough cache stalls for the 34K AP/SP programming model to make the bare metal code on the non-Linux VPE miss RT deadlines. The main part of this patch was originally written by Ralf Baechle; Atushi Nemoto did the the debugging. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-02[MIPS] Remove __flush_icache_pageAtsushi Nemoto1-2/+0
__flash_icache_page is unused, so kill it. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-09-27[MIPS] Retire flush_icache_page from mm use.Ralf Baechle1-4/+8
On the 34K the redundant cache operations were causing excessive stalls resulting in realtime code running on the second VPE missing its deadline. For all other platforms this patch is just a significant performance improvment as illustrated by below benchmark numbers. Processor, Processes - times in microseconds - smaller is better ------------------------------------------------------------------------------ Host OS Mhz null null open slct sig sig fork exec sh call I/O stat clos TCP inst hndl proc proc proc --------- ------------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 25Kf 2.6.18-rc4 533 0.49 1.16 7.57 33.4 30.5 1.34 12.4 5497 17.K 54.K 25Kf 2.6.18-rc4-p 533 0.49 1.16 6.68 23.0 30.7 1.36 8.55 5030 16.K 48.K 4Kc 2.6.18-rc4 80 4.21 15.0 131. 289. 261. 16.5 258. 18.K 70.K 227K 4Kc 2.6.18-rc4-p 80 4.34 13.1 128. 285. 262. 18.2 258. 12.K 52.K 176K 34Kc 2.6.18-rc4 40 5.01 14.0 61.6 90.0 477. 17.9 94.7 29.K 108K 342K 34Kc 2.6.18-rc4-p 40 4.98 13.9 61.2 89.7 475. 17.6 93.7 8758 44.K 158K BCM1480 2.6.18-rc4 700 0.28 0.60 3.68 5.92 16.0 0.78 5.08 931. 3163 15.K BCM1480 2.6.18-rc4-p 700 0.28 0.61 3.65 5.85 16.0 0.79 5.20 395. 1464 8385 TX49-16K 2.6.18-rc3 197 0.73 2.41 19.0 37.8 82.9 2.94 17.5 4438 14.K 56.K TX49-16K 2.6.18-rc3-p 197 0.73 2.40 19.9 36.3 82.9 2.94 23.4 2577 9103 38.K TX49-32K 2.6.18-rc3 396 0.36 1.19 6.80 11.8 41.0 1.46 8.17 2738 8465 32.K TX49-32K 2.6.18-rc3-p 396 0.36 1.19 6.82 10.2 41.0 1.46 8.18 1330 4638 18.K Original patch by me with enhancements by Atsushi Nemoto. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
2006-04-19[MIPS] Handle IDE PIO cache aliases on SMP.Ralf Baechle1-0/+1
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-02-07[MIPS] Remove wrong __user tags.Atsushi Nemoto1-2/+1
This fixes sparse warnings 'dereference of noderef expression'. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Better interface to run uncached cache setup code.Thiemo Seufer1-0/+3
Signed-off-by: Thiemo Seufer <ths@networkno.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Reformat; cosmetic cleanups.Ralf Baechle1-13/+18
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Sparseify MIPS.Ralf Baechle1-1/+2
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29Fix ptrace aliasing issue in copy_from_user_page / copy_to_user_page.Ralf Baechle1-1/+7
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-04-17Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+81
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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