void dump_tlb_line()

in mm/tlb.c [167:206]

• 32 lines of code
• 8 McCabe index (conditional complexity)

void dump_tlb_line(unsigned long line)
{
	unsigned int way;
	unsigned long org_misc;

	pr_debug("dump tlb-entries for line=%#lx (addr %08lx)\n", line,
		line << (PAGE_SHIFT + cpuinfo.tlb_num_ways_log2));

	/* remember pid/way until we return */
	org_misc = (RDCTL(CTL_TLBMISC) & (TLBMISC_PID | TLBMISC_WAY));

	WRCTL(CTL_PTEADDR, line << 2);

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

		WRCTL(CTL_TLBMISC, TLBMISC_RD | (way << TLBMISC_WAY_SHIFT));
		pteaddr = RDCTL(CTL_PTEADDR);
		tlbmisc = RDCTL(CTL_TLBMISC);
		tlbacc = RDCTL(CTL_TLBACC);

		if ((tlbacc << PAGE_SHIFT) != 0) {
			pr_debug("-- way:%02x vpn:0x%08lx phys:0x%08lx pid:0x%02lx flags:%c%c%c%c%c\n",
				way,
				(pteaddr << (PAGE_SHIFT-2)),
				(tlbacc << PAGE_SHIFT),
				((tlbmisc >> TLBMISC_PID_SHIFT) &
				TLBMISC_PID_MASK),
				(tlbacc & _PAGE_READ ? 'r' : '-'),
				(tlbacc & _PAGE_WRITE ? 'w' : '-'),
				(tlbacc & _PAGE_EXEC ? 'x' : '-'),
				(tlbacc & _PAGE_GLOBAL ? 'g' : '-'),
				(tlbacc & _PAGE_CACHED ? 'c' : '-'));
		}
	}

	WRCTL(CTL_TLBMISC, org_misc);
}