static mm_context_t get_new_context()

in mm/mmu_context.c [58:78]

• 11 lines of code
• 3 McCabe index (conditional complexity)

static mm_context_t get_new_context(void)
{
	/* Return the next pid */
	next_mmu_context += (1UL << PID_SHIFT);

	/* If the pid field wraps around we increase the version and
	 * flush the tlb */
	if (unlikely(CTX_PID(next_mmu_context) == 0)) {
		/* Version is incremented since the pid increment above
		 * overflows info version */
		flush_cache_all();
		flush_tlb_all();
	}

	/* If the version wraps we start over with the first generation, we do
	 * not need to flush the tlb here since it's always done above */
	if (unlikely(CTX_VERSION(next_mmu_context) == 0))
		next_mmu_context = FIRST_CTX;

	return next_mmu_context;
}