X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Flttng-context-perf-counters.c;h=372f05e0cc902c311611604875d6922372c1dc48;hb=6768203a5a4f1e8ef32629d3b25e83b91e3645fe;hp=0b466363235b2a91e307645dbd1b2cef107e9419;hpb=f7d06400be7d046205c20277a03f3f31bf5b1703;p=lttng-modules.git

diff --git a/src/lttng-context-perf-counters.c b/src/lttng-context-perf-counters.c
index 0b466363..372f05e0 100644
--- a/src/lttng-context-perf-counters.c
+++ b/src/lttng-context-perf-counters.c
@@ -16,6 +16,7 @@
 #include <lttng/events.h>
 #include <lttng/events-internal.h>
 #include <ringbuffer/frontend_types.h>
+#include <wrapper/cpu.h>
 #include <wrapper/vmalloc.h>
 #include <wrapper/perf.h>
 #include <lttng/tracer.h>
@@ -57,8 +58,7 @@ void perf_counter_record(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
 		 */
 		value = 0;
 	}
-	lib_ring_buffer_align_ctx(ctx, lttng_alignof(value));
-	chan->ops->event_write(ctx, &value, sizeof(value));
+	chan->ops->event_write(ctx, &value, sizeof(value), lttng_alignof(value));
 }
 
 #if defined(CONFIG_PERF_EVENTS) && (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,1,0))
@@ -98,10 +98,10 @@ void lttng_destroy_perf_counter_ctx_field(void *priv)
 	{
 		int cpu;
 
-		get_online_cpus();
+		lttng_cpus_read_lock();
 		for_each_online_cpu(cpu)
 			perf_event_release_kernel(events[cpu]);
-		put_online_cpus();
+		lttng_cpus_read_unlock();
 #ifdef CONFIG_HOTPLUG_CPU
 		unregister_cpu_notifier(&perf_field->nb);
 #endif
@@ -305,7 +305,7 @@ int lttng_add_perf_counter_to_ctx(uint32_t type,
 		perf_field->nb.priority = 0;
 		register_cpu_notifier(&perf_field->nb);
 #endif
-		get_online_cpus();
+		lttng_cpus_read_lock();
 		for_each_online_cpu(cpu) {
 			events[cpu] = wrapper_perf_event_create_kernel_counter(attr,
 						cpu, NULL, overflow_callback);
@@ -318,7 +318,7 @@ int lttng_add_perf_counter_to_ctx(uint32_t type,
 				goto counter_busy;
 			}
 		}
-		put_online_cpus();
+		lttng_cpus_read_unlock();
 		perf_field->hp_enable = 1;
 	}
 #endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
@@ -352,7 +352,7 @@ counter_error:
 			if (events[cpu] && !IS_ERR(events[cpu]))
 				perf_event_release_kernel(events[cpu]);
 		}
-		put_online_cpus();
+		lttng_cpus_read_unlock();
 #ifdef CONFIG_HOTPLUG_CPU
 		unregister_cpu_notifier(&perf_field->nb);
 #endif