oprofile: Adding switch counter to oprofile statistic variables
This patch moves the multiplexing switch counter from x86 code to
common oprofile statistic variables. Now the value will be available
and usable for all architectures. The initialization and
incrementation also moved to common code.
Signed-off-by: Robert Richter <robert.richter@amd.com>
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index da6d2ab..7b3362f 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -34,11 +34,6 @@
/* 0 == registered but off, 1 == registered and on */
static int nmi_enabled = 0;
-
-#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
-extern atomic_t multiplex_counter;
-#endif
-
struct op_counter_config counter_config[OP_MAX_COUNTER];
/* common functions */
@@ -253,8 +248,6 @@
on_each_cpu(nmi_cpu_switch, NULL, 1);
- atomic_inc(&multiplex_counter);
-
return 0;
}
diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c
index a48294a..dc8a042 100644
--- a/drivers/oprofile/oprof.c
+++ b/drivers/oprofile/oprof.c
@@ -107,8 +107,11 @@
static void switch_worker(struct work_struct *work)
{
- if (!oprofile_ops.switch_events())
- start_switch_worker();
+ if (oprofile_ops.switch_events())
+ return;
+
+ atomic_inc(&oprofile_stats.multiplex_counter);
+ start_switch_worker();
}
/* User inputs in ms, converts to jiffies */
diff --git a/drivers/oprofile/oprofile_stats.c b/drivers/oprofile/oprofile_stats.c
index 77a57a6..61689e8 100644
--- a/drivers/oprofile/oprofile_stats.c
+++ b/drivers/oprofile/oprofile_stats.c
@@ -16,9 +16,6 @@
#include "cpu_buffer.h"
struct oprofile_stat_struct oprofile_stats;
-#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
-atomic_t multiplex_counter;
-#endif
void oprofile_reset_stats(void)
{
@@ -37,9 +34,7 @@
atomic_set(&oprofile_stats.sample_lost_no_mapping, 0);
atomic_set(&oprofile_stats.event_lost_overflow, 0);
atomic_set(&oprofile_stats.bt_lost_no_mapping, 0);
-#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
- atomic_set(&multiplex_counter, 0);
-#endif
+ atomic_set(&oprofile_stats.multiplex_counter, 0);
}
@@ -84,6 +79,6 @@
&oprofile_stats.bt_lost_no_mapping);
#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
oprofilefs_create_ro_atomic(sb, dir, "multiplex_counter",
- &multiplex_counter);
+ &oprofile_stats.multiplex_counter);
#endif
}
diff --git a/drivers/oprofile/oprofile_stats.h b/drivers/oprofile/oprofile_stats.h
index 3da0d08..0b54e46 100644
--- a/drivers/oprofile/oprofile_stats.h
+++ b/drivers/oprofile/oprofile_stats.h
@@ -17,6 +17,7 @@
atomic_t sample_lost_no_mapping;
atomic_t bt_lost_no_mapping;
atomic_t event_lost_overflow;
+ atomic_t multiplex_counter;
};
extern struct oprofile_stat_struct oprofile_stats;