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3.0.8 cache fixes #45

Merged
merged 8 commits into from
Jul 7, 2015
Merged

3.0.8 cache fixes #45

merged 8 commits into from
Jul 7, 2015

Commits on Jul 6, 2015

  1. timeconst.pl: Eliminate Perl warning 

    defined(@array) is deprecated in Perl and gives off a warning.
Restructure the code to remove that warning.

[ hpa: it would be interesting to revert to the timeconst.bc script.
  It appears that the failures reported by akpm during testing of
  that script was due to a known broken version of make, not a problem
  with bc.  The Makefile rules could probably be restructured to avoid
  the make bug, or it is probably old enough that it doesn't matter. ]

Reported-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@vger.kernel.org>
    H. Peter Anvin authored and Alex Smith committed Jul 6, 2015
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  2. commit chris.dearman@imgtec.com patch about cacheflush issue on SMP m… 

    …ulti-core. The strategy is to flush both dcache and icache on the local CPU by address if the range < cachesize or by index if the range >= cachesize, and to flush the cache by index on all other CPU's.

The other CPU maybe running in different process whit different address mapping,
protected_blast_icache_range_ipi() maybe failed, so flush icache all with
local_r4k_flush_icache_ipi(). But local_r4k_flush_icache_ipi() flush icache all by index,
both flush L1 icache and L2 cache, it slowdown the machine performance.
Ingenic should optimized the routine later.

Change-Id: Ie95e1fcbb0edf12fd18bdfb592bcaacaf1580d05
    lgwang authored and Alex Smith committed Jul 6, 2015
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  3. Add protected_blast_other_cpu_icache_range_ipi() for cacheflush. rjzc… 

    …ache.h blast_dcache32() remove K0_TO_K1_CHECK(). rjzcache.h fix blast_icache_jz() bug.

Change-Id: I3f23ca4204cb804ee2f986bf0301a4c3e794a845
    lgwang authored and Alex Smith committed Jul 6, 2015
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  4. replace local_r4k_flush_*cache_ipi with local_r4k_flush_*cache_jz_ipi… 

    …. and remove r4k_on_other_cpu(local_r4k_flush_dcache_jz_ipi,0).

Change-Id: I31252f426dba7326cfe1b13dd1aa587e61e411a2
    lgwang authored and Alex Smith committed Jul 6, 2015
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  5. blast_icache_jz() add INVALIDATE_BTB(). blast_dcache_jz() remove SYNC… 

    …_WB() for better performance. If user use __flush_cache_all() and then do a DMA transfer, must do SYNC_WB() after do __flush_cache_all().

Change-Id: I55cfbab24b706fab14a9af4f64d24430fbedeb5c
    lgwang authored and Alex Smith committed Jul 6, 2015
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  6. r4k_flush_icache_range() replace r4k_on_other_cpu(local_r4k_flush_dca… 

    …che_jz_ipi,0) with r4k_on_other_cpu(protected_blast_other_cpu_dcache_range_ipi, &range_addr) for a better performance.

Change-Id: Idbfeecfc3437162f22b62f62d3a28ab19377e42a
    lgwang authored and Alex Smith committed Jul 6, 2015
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  7. Update c-jz.c r4k_flush_icache_range(), Flush complete dcache and ica… 

    …che on other CPUs.

Test result by 2013-10-25:
Flush complete dcache and icache on other CPUs with local_r4k_flush_dcache_jz_ipi()
and local_r4k_flush_icache_jz_ipi(), running flushtest is stable 4days.

Flush dcache_range and icache_range by index on other CPUs,
with protected_blast_other_cpu_dcache_range_ipi() protected_blast_other_cpu_icache_range_ipi(),
fails running flushtest after hours. It should be update in the future.

Change-Id: I3446c92cbc67ab9aa0a1131384bf6f3ba52735b6
    lgwang authored and Alex Smith committed Jul 6, 2015
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  8. fix:flush icache range bug 

    Change-Id: Ibca3dbfa88110576823819c7c9200cc86d014dd6
    dsqiu authored and Alex Smith committed Jul 6, 2015
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