void flush_tlb_pid()

in mm/tlb.c [216:249]

• 26 lines of code
• 4 McCabe index (conditional complexity)

void flush_tlb_pid(unsigned long mmu_pid)
{
	unsigned long addr = 0;
	unsigned int line;
	unsigned int way;
	unsigned long org_misc, pid_misc;

	/* remember pid/way until we return */
	get_misc_and_pid(&org_misc, &pid_misc);

	for (line = 0; line < cpuinfo.tlb_num_lines; line++) {
		WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));

		for (way = 0; way < cpuinfo.tlb_num_ways; way++) {
			unsigned long tlbmisc;
			unsigned long pid;

			tlbmisc = TLBMISC_RD | (way << TLBMISC_WAY_SHIFT);
			WRCTL(CTL_TLBMISC, tlbmisc);
			tlbmisc = RDCTL(CTL_TLBMISC);
			pid = (tlbmisc >> TLBMISC_PID_SHIFT) & TLBMISC_PID_MASK;
			if (pid != mmu_pid)
				continue;

			tlbmisc = TLBMISC_WE | (way << TLBMISC_WAY_SHIFT);
			WRCTL(CTL_TLBMISC, tlbmisc);
			WRCTL(CTL_TLBACC, 0);
		}

		addr += PAGE_SIZE;
	}

	WRCTL(CTL_TLBMISC, org_misc);
}