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MIPS: dump_tlb: Only dump PageGrain if interesting 

The PageGrain register may not exist if certain architectural features
aren't present, therefore only print out its value when dumping the TLB
registers if it is expected to contain fields relevant to the TLB.

Fixes: d1e9a4f547 ("MIPS: Add SysRq operation to dump TLBs on all CPUs")
Reported-by: Joshua Kinard <kumba@gentoo.org>
Reported-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10723/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
James Hogan 2015-07-15 16:17:45 +01:00 committed by Ralf Baechle
parent aaa7be48fd
commit 5d3c3c7d29
1 changed files with 2 additions and 1 deletions
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3
arch/mips/lib/dump_tlb.c
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@ -23,7 +23,8 @@ void dump_tlb_regs(void)
pr_info("EntryLo0 : %0*lx\n", field, read_c0_entrylo0());
pr_info("EntryLo1 : %0*lx\n", field, read_c0_entrylo1());
pr_info("Wired : %0x\n", read_c0_wired());
pr_info("PageGrain: %0x\n", read_c0_pagegrain());
if (cpu_has_small_pages || cpu_has_rixi || cpu_has_xpa)
pr_info("PageGrain: %0x\n", read_c0_pagegrain());
if (cpu_has_htw) {
pr_info("PWField : %0*lx\n", field, read_c0_pwfield());
pr_info("PWSize : %0*lx\n", field, read_c0_pwsize());