C++ (Cpp) fpsimd_save_partial_stateの例

コード例 #1

ファイル: fpsimd.c プロジェクト: 1paul1/dynamite

/*
 * Kernel-side NEON support functions
 */
void kernel_neon_begin_partial(u32 num_regs)
{
	if (in_interrupt()) {
		struct fpsimd_partial_state *s = this_cpu_ptr(
			in_irq() ? &hardirq_fpsimdstate : &softirq_fpsimdstate);
		BUG_ON(num_regs > 32);
		fpsimd_save_partial_state(s, roundup(num_regs, 2));
	} else {
	/*
	  * Save the userland FPSIMD state if we have one and if we
	  * haven't done so already. Clear fpsimd_last_state to indicate
	  * that there is no longer userland FPSIMD state in the
	  * registers.
	*/
	preempt_disable();

	if (current->mm)
		fpsimd_save_state(&current->thread.fpsimd_state);
	}
}

コード例 #2

ファイル: fpsimd.c プロジェクト: farrellpeng/MX283Linux

/*
 * Kernel-side NEON support functions
 */
void kernel_neon_begin_partial(u32 num_regs)
{
	if (WARN_ON(!system_supports_fpsimd()))
		return;
	if (in_interrupt()) {
		struct fpsimd_partial_state *s = this_cpu_ptr(
			in_irq() ? &hardirq_fpsimdstate : &softirq_fpsimdstate);

		BUG_ON(num_regs > 32);
		fpsimd_save_partial_state(s, roundup(num_regs, 2));
	} else {
		/*
		 * Save the userland FPSIMD state if we have one and if we
		 * haven't done so already. Clear fpsimd_last_state to indicate
		 * that there is no longer userland FPSIMD state in the
		 * registers.
		 */
		preempt_disable();
		if (current->mm &&
		    !test_and_set_thread_flag(TIF_FOREIGN_FPSTATE))
			fpsimd_save_state(&current->thread.fpsimd_state);
		this_cpu_write(fpsimd_last_state, NULL);
	}
}