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| author | Michael Ellerman <mpe@ellerman.id.au> | 2024-02-29 13:25:17 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2024-03-03 13:05:21 +0100 |
| commit | 8488cdcb00fd5f238754005a43a3a7445860d344 (patch) | |
| tree | 162e49f3dae81701e48520d340fc4f00e2f2a588 /tools/testing | |
| parent | powerpc/mm: Code cleanup for __hash_page_thp (diff) | |
| download | linux-8488cdcb00fd5f238754005a43a3a7445860d344.tar.xz linux-8488cdcb00fd5f238754005a43a3a7445860d344.zip | |
powerpc/64s: Move dcbt/dcbtst sequence into a macro
There's an almost identical code sequence to specify load/store access
hints in __copy_tofrom_user_power7(), copypage_power7() and
memcpy_power7().
Move the sequence into a common macro, which is passed the registers to
use as they differ slightly.
There also needs to be a copy in the selftests, it could be shared in
future if the headers are cleaned up / refactored.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240229122521.762431-1-mpe@ellerman.id.au
Diffstat (limited to 'tools/testing')
| -rw-r--r-- | tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h b/tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h index a89f1fbf86ec..1d293ab77185 100644 --- a/tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h +++ b/tools/testing/selftests/powerpc/copyloops/asm/ppc_asm.h @@ -47,4 +47,16 @@ /* Default to taking the first of any alternative feature sections */ test_feature = 1 +#define DCBT_SETUP_STREAMS(from, from_parms, to, to_parms, scratch) \ + lis scratch,0x8000; /* GO=1 */ \ + clrldi scratch,scratch,32; \ + /* setup read stream 0 */ \ + dcbt 0,from,0b01000; /* addr from */ \ + dcbt 0,from_parms,0b01010; /* length and depth from */ \ + /* setup write stream 1 */ \ + dcbtst 0,to,0b01000; /* addr to */ \ + dcbtst 0,to_parms,0b01010; /* length and depth to */ \ + eieio; \ + dcbt 0,scratch,0b01010; /* all streams GO */ + #endif /* __SELFTESTS_POWERPC_PPC_ASM_H */ |