Commit Graph

12 Commits

Author SHA1 Message Date
Atsushi Nemoto c59a0f15be [MIPS] Remove __flush_icache_page
__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>
2006-10-01 23:16:58 +01:00
Ralf Baechle 585fa72493 [MIPS] Retire flush_icache_page from mm use.
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>
2006-09-27 13:37:34 +01:00
Jörn Engel 6ab3d5624e Remove obsolete #include <linux/config.h>
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30 19:25:36 +02:00
Ralf Baechle 7e3bfc7cfc [MIPS] Handle IDE PIO cache aliases on SMP.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-04-19 04:14:29 +02:00
Atsushi Nemoto d4264f1839 [MIPS] Remove wrong __user tags.
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>
2006-02-07 13:30:25 +00:00
Atsushi Nemoto 750ccf687f Fix zero length sys_cacheflush
Cacheflush(0, 0, 0) was crashing the system.  This is because
flush_icache_range(start, end) tries to flushing whole address space
(0 - ~0UL) if both start and end are zero.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:32:44 +01:00
Ralf Baechle 02cf211968 Cleanup the mess in cpu_cache_init.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:32:32 +01:00
Ralf Baechle 6e760c8dae Rename CONFIG_CPU_MIPS{32,64} to CONFIG_CPU_MIPS{32|64}_R1.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:31:37 +01:00
Ralf Baechle 53de0d471f Reformat; cosmetic cleanups.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:30:57 +01:00
Ralf Baechle 9ff77c469e Export shm_align_mask and flush_data_cache_page.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:30:54 +01:00
Ralf Baechle fe00f943e0 Sparseify MIPS.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:30:50 +01:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
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!
2005-04-16 15:20:36 -07:00