[tip:perf/core] perf/x86/intel: Fix build warning in intel_pmu_drain_pebs_nhm()

[tip-bot for Peter Zijlstra]

Commit-ID:  92519bbc8af612975410def52bd462ca9af85cdb
Gitweb:     http://git.kernel.org/tip/92519bbc8af612975410def52bd462ca9af85cdb
Author:     Peter Zijlstra <peterz@xxxxxxxxxxxxx>
AuthorDate: Fri, 20 Sep 2013 13:08:50 +0200
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Fri, 20 Sep 2013 13:15:27 +0200

perf/x86/intel: Fix build warning in intel_pmu_drain_pebs_nhm()

Fengguang Wu reported this build warning:

    arch/x86/kernel/cpu/perf_event_intel_ds.c: In function 'intel_pmu_drain_pebs_nhm':
    arch/x86/kernel/cpu/perf_event_intel_ds.c:964:2: warning: format '%ld' expects argument of type 'long int', but argument 4 has type 'int'

Because pointer arithmetics result type is bitness dependent there's no natural
type to use here, cast it to long.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-jbpauwxJqtf24luewcsdFith@xxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 arch/x86/kernel/cpu/perf_event_intel_ds.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/perf_event_intel_ds.c b/arch/x86/kernel/cpu/perf_event_intel_ds.c
index 655d591..54ff6ce 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_ds.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_ds.c
@@ -963,7 +963,7 @@ static void intel_pmu_drain_pebs_nhm(struct pt_regs *iregs)
 	 */
 	WARN_ONCE(top - at > x86_pmu.max_pebs_events * x86_pmu.pebs_record_size,
 		  "Unexpected number of pebs records %ld\n",
-		  (top - at) / x86_pmu.pebs_record_size);
+		  (long)(top - at) / x86_pmu.pebs_record_size);
 
 	for (; at < top; at += x86_pmu.pebs_record_size) {
 		struct pebs_record_nhm *p = at;
--
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