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| author | Babu Moger <babu.moger@oracle.com> | 2017-08-07 17:52:51 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-10 14:57:00 -0700 |
| commit | b3a04ed507bf5b85e9eae521f5c6ca1d1bc6a4f2 (patch) | |
| tree | e952ade8ca842529ed89f37061b7b4601f86ff72 /arch/sparc/kernel | |
| parent | 1ab326934fa1a16f776b014ba482c1be08a205a1 (diff) | |
| download | linux-b3a04ed507bf5b85e9eae521f5c6ca1d1bc6a4f2.tar.bz2 | |
arch/sparc: Optimized memcpy, memset, copy_to_user, copy_from_user for M7/M8
New algorithm that takes advantage of the M7/M8 block init store
ASI, ie, overlapping pipelines and miss buffer filling.
Full details in code comments.
Signed-off-by: Babu Moger <babu.moger@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel')
| -rw-r--r-- | arch/sparc/kernel/head_64.S | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/sparc/kernel/head_64.S b/arch/sparc/kernel/head_64.S index 78e0211753d2..bf9a5acc8432 100644 --- a/arch/sparc/kernel/head_64.S +++ b/arch/sparc/kernel/head_64.S @@ -603,10 +603,10 @@ niagara_tlb_fixup: be,pt %xcc, niagara4_patch nop cmp %g1, SUN4V_CHIP_SPARC_M7 - be,pt %xcc, niagara4_patch + be,pt %xcc, sparc_m7_patch nop cmp %g1, SUN4V_CHIP_SPARC_M8 - be,pt %xcc, niagara4_patch + be,pt %xcc, sparc_m7_patch nop cmp %g1, SUN4V_CHIP_SPARC_SN be,pt %xcc, niagara4_patch @@ -621,6 +621,18 @@ niagara_tlb_fixup: ba,a,pt %xcc, 80f nop + +sparc_m7_patch: + call m7_patch_copyops + nop + call m7_patch_bzero + nop + call m7_patch_pageops + nop + + ba,a,pt %xcc, 80f + nop + niagara4_patch: call niagara4_patch_copyops nop |