linux-kernel - [PATCH fixes] MIPS: perf: Fix build with CONFIG_CPU

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Message-Id: <20190326170335.8031-1-f.fainelli@gmail.com>
Date:   Tue, 26 Mar 2019 10:03:34 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-mips@...ux-mips.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>,
        linux-kernel@...r.kernel.org (open list:PERFORMANCE EVENTS SUBSYSTEM),
        linux-mips@...r.kernel.org (open list:MIPS)
Subject: [PATCH fixes] MIPS: perf: Fix build with CONFIG_CPU_BMIPS5000 enabled

The 'event' variable may be unused in case only CONFIG_CPU_BMIPS5000
being enabled:

arch/mips/kernel/perf_event_mipsxx.c: In function 'mipsxx_pmu_enable_event':
arch/mips/kernel/perf_event_mipsxx.c:326:21: error: unused variable 'event' [-Werror=unused-variable]
  struct perf_event *event = container_of(evt, struct perf_event, hw);
                     ^~~~~

Fixes: 84002c88599d ("MIPS: perf: Fix perf with MT counting other threads")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 arch/mips/kernel/perf_event_mipsxx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/mips/kernel/perf_event_mipsxx.c b/arch/mips/kernel/perf_event_mipsxx.c
index 413863508f6f..739b7ff9fdab 100644
--- a/arch/mips/kernel/perf_event_mipsxx.c
+++ b/arch/mips/kernel/perf_event_mipsxx.c
@@ -323,7 +323,9 @@ static int mipsxx_pmu_alloc_counter(struct cpu_hw_events *cpuc,
 
 static void mipsxx_pmu_enable_event(struct hw_perf_event *evt, int idx)
 {
+#ifndef CONFIG_CPU_BMIPS5000
 	struct perf_event *event = container_of(evt, struct perf_event, hw);
+#endif
 	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
 #ifdef CONFIG_MIPS_MT_SMP
 	unsigned int range = evt->event_base >> 24;
-- 
2.17.1