MIPS: perf: Split the Kconfig option CONFIG_MIPS_MT_SMP
Split the Kconfig option CONFIG_MIPS_MT_SMP into CONFIG_MIPS_MT_SMP
and CONFIG_MIPS_PERF_SHARED_TC_COUNTERS so some of the code used
for performance counters that are shared between threads can be used
for MIPS cores that are not MT_SMP.
Signed-off-by: Al Cooper <alcooperx@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/4108/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/perf_event_mipsxx.c b/arch/mips/kernel/perf_event_mipsxx.c
index 19253d7..cb21308 100644
--- a/arch/mips/kernel/perf_event_mipsxx.c
+++ b/arch/mips/kernel/perf_event_mipsxx.c
@@ -130,7 +130,7 @@
#define M_PERFCTL_EVENT_MASK 0xfe0
-#ifdef CONFIG_MIPS_MT_SMP
+#ifdef CONFIG_MIPS_PERF_SHARED_TC_COUNTERS
static int cpu_has_mipsmt_pertccounters;
static DEFINE_RWLOCK(pmuint_rwlock);
@@ -156,10 +156,10 @@
return counters >> vpe_shift();
}
-#else /* !CONFIG_MIPS_MT_SMP */
+#else /* !CONFIG_MIPS_PERF_SHARED_TC_COUNTERS */
#define vpe_id() 0
-#endif /* CONFIG_MIPS_MT_SMP */
+#endif /* CONFIG_MIPS_PERF_SHARED_TC_COUNTERS */
static void resume_local_counters(void);
static void pause_local_counters(void);
@@ -503,7 +503,7 @@
static void mipspmu_enable(struct pmu *pmu)
{
-#ifdef CONFIG_MIPS_MT_SMP
+#ifdef CONFIG_MIPS_PERF_SHARED_TC_COUNTERS
write_unlock(&pmuint_rwlock);
#endif
resume_local_counters();
@@ -523,7 +523,7 @@
static void mipspmu_disable(struct pmu *pmu)
{
pause_local_counters();
-#ifdef CONFIG_MIPS_MT_SMP
+#ifdef CONFIG_MIPS_PERF_SHARED_TC_COUNTERS
write_lock(&pmuint_rwlock);
#endif
}
@@ -1163,7 +1163,7 @@
* See also mipsxx_pmu_start().
*/
pause_local_counters();
-#ifdef CONFIG_MIPS_MT_SMP
+#ifdef CONFIG_MIPS_PERF_SHARED_TC_COUNTERS
read_lock(&pmuint_rwlock);
#endif
@@ -1195,7 +1195,7 @@
if (handled == IRQ_HANDLED)
irq_work_run();
-#ifdef CONFIG_MIPS_MT_SMP
+#ifdef CONFIG_MIPS_PERF_SHARED_TC_COUNTERS
read_unlock(&pmuint_rwlock);
#endif
resume_local_counters();
@@ -1362,7 +1362,7 @@
return -ENODEV;
}
-#ifdef CONFIG_MIPS_MT_SMP
+#ifdef CONFIG_MIPS_PERF_SHARED_TC_COUNTERS
cpu_has_mipsmt_pertccounters = read_c0_config7() & (1<<19);
if (!cpu_has_mipsmt_pertccounters)
counters = counters_total_to_per_cpu(counters);