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powerpc/perf: Change type of the bhrb_users variable 

This patch just changes data type of bhrb_users variable from
int to unsigned int because it never contains a negative value.

Reported-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Anshuman Khandual 2015-06-30 13:50:28 +05:30 committed by Michael Ellerman
parent 465345ca38
commit f0322f7f1e
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/perf/core-book3s.c
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@ -53,7 +53,7 @@ struct cpu_hw_events {
/* BHRB bits */
u64 bhrb_filter; /* BHRB HW branch filter */
int bhrb_users;
unsigned int bhrb_users;
void *bhrb_context;
struct perf_branch_stack bhrb_stack;
struct perf_branch_entry bhrb_entries[BHRB_MAX_ENTRIES];
@ -369,8 +369,8 @@ static void power_pmu_bhrb_disable(struct perf_event *event)
if (!ppmu->bhrb_nr)
return;
WARN_ON_ONCE(!cpuhw->bhrb_users);
cpuhw->bhrb_users--;
WARN_ON_ONCE(cpuhw->bhrb_users < 0);
perf_sched_cb_dec(event->ctx->pmu);
if (!cpuhw->disabled && !cpuhw->bhrb_users) {