xor-neon.c 939 B

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. * linux/arch/arm/lib/xor-neon.c
  4. *
  5. * Copyright (C) 2013 Linaro Ltd <[email protected]>
  6. */
  7. #include <linux/raid/xor.h>
  8. #include <linux/module.h>
  9. MODULE_LICENSE("GPL");
  10. #ifndef __ARM_NEON__
  11. #error You should compile this file with '-march=armv7-a -mfloat-abi=softfp -mfpu=neon'
  12. #endif
  13. /*
  14. * Pull in the reference implementations while instructing GCC (through
  15. * -ftree-vectorize) to attempt to exploit implicit parallelism and emit
  16. * NEON instructions. Clang does this by default at O2 so no pragma is
  17. * needed.
  18. */
  19. #ifdef CONFIG_CC_IS_GCC
  20. #pragma GCC optimize "tree-vectorize"
  21. #endif
  22. #pragma GCC diagnostic ignored "-Wunused-variable"
  23. #include <asm-generic/xor.h>
  24. struct xor_block_template const xor_block_neon_inner = {
  25. .name = "__inner_neon__",
  26. .do_2 = xor_8regs_2,
  27. .do_3 = xor_8regs_3,
  28. .do_4 = xor_8regs_4,
  29. .do_5 = xor_8regs_5,
  30. };
  31. EXPORT_SYMBOL(xor_block_neon_inner);