include/asm-generic/simd.h

   1
   2 #include <linux/hardirq.h>
   3
   4 /*
   5  * may_use_simd - whether it is allowable at this time to issue SIMD
   6  *                instructions or access the SIMD register file
   7  *
   8  * As architectures typically don't preserve the SIMD register file when
   9  * taking an interrupt, !in_interrupt() should be a reasonable default.
  10  */
  11 static __must_check inline bool may_use_simd(void)
  12 {
  13         return !in_interrupt();
  14 }