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powerpc/xmon: Drop the valid variable completely in dump_segments()

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The value of 'valid' is always zero when 'esid' is zero, and if 'esid'
is non-zero then the value of 'valid' is irrelevant because we are using
logical or in the if expression.

In fact 'valid' can be dropped completely from dump_segments() by
simply doing the check with SLB_ESID_V directly in the if.

Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
[mpe: Rewrite change log]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Anshuman Khandual 2015-07-29 12:40:04 +05:30 committed by Michael Ellerman
parent 9c61f7a0ad
commit 8218a3031c
1 changed files with 3 additions and 4 deletions
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7
arch/powerpc/xmon/xmon.c
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@ -2730,7 +2730,7 @@ static void xmon_print_symbol(unsigned long address, const char *mid,
void dump_segments(void)
{
int i;
unsigned long esid,vsid,valid;
unsigned long esid,vsid;
unsigned long llp;
printf("SLB contents of cpu 0x%x\n", smp_processor_id());
@ -2738,10 +2738,9 @@ void dump_segments(void)
for (i = 0; i < mmu_slb_size; i++) {
asm volatile("slbmfee %0,%1" : "=r" (esid) : "r" (i));
asm volatile("slbmfev %0,%1" : "=r" (vsid) : "r" (i));
valid = (esid & SLB_ESID_V);
if (valid | esid | vsid) {
if (esid || vsid) {
printf("%02d %016lx %016lx", i, esid, vsid);
if (valid) {
if (esid & SLB_ESID_V) {
llp = vsid & SLB_VSID_LLP;
if (vsid & SLB_VSID_B_1T) {
printf(" 1T ESID=%9lx VSID=%13lx LLP:%3lx \n",