page alloc wrapper: Fix get_pfnblock_flags_mask prototype

[lttng-modules.git] / lttng-context-perf-counters.c

diff --git a/lttng-context-perf-counters.c b/lttng-context-perf-counters.c
index 260e5d0d9a5873cef635b93bbc93548d70104a46..58fbbe6159a7e77be2d45d9ba8ed4173c2ff8543 100644 (file)
--- a/lttng-context-perf-counters.c
+++ b/lttng-context-perf-counters.c
@@ -1,23 +1,10 @@
-/*
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
  * lttng-context-perf-counters.c
  *
  * LTTng performance monitoring counters (perf-counters) integration module.
  *
  * Copyright (C) 2009-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include <linux/module.h>
@@ -28,6 +15,7 @@
 #include <linux/cpu.h>
 #include <lttng-events.h>
 #include <wrapper/ringbuffer/frontend_types.h>
+#include <wrapper/cpu.h>
 #include <wrapper/vmalloc.h>
 #include <wrapper/perf.h>
 #include <lttng-tracer.h>
@@ -72,7 +60,7 @@ void perf_counter_record(struct lttng_ctx_field *field,
        chan->ops->event_write(ctx, &value, sizeof(value));
 }
 
-#if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3,0,99))
+#if defined(CONFIG_PERF_EVENTS) && (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,1,0))
 static
 void overflow_callback(struct perf_event *event,
                       struct perf_sample_data *data,
@@ -93,7 +81,7 @@ void lttng_destroy_perf_counter_field(struct lttng_ctx_field *field)
 {
        struct perf_event **events = field->u.perf_counter->e;
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
        {
                int ret;
 
@@ -104,26 +92,26 @@ void lttng_destroy_perf_counter_field(struct lttng_ctx_field *field)
                        &field->u.perf_counter->cpuhp_prepare.node);
                WARN_ON(ret);
        }
-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
        {
                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(&field->u.perf_counter->nb);
 #endif
        }
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
        kfree(field->event_field.name);
        kfree(field->u.perf_counter->attr);
        lttng_kvfree(events);
        kfree(field->u.perf_counter);
 }
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
 
 int lttng_cpuhp_perf_counter_online(unsigned int cpu,
                struct lttng_cpuhp_node *node)
@@ -164,7 +152,7 @@ int lttng_cpuhp_perf_counter_dead(unsigned int cpu,
        return 0;
 }
 
-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 
 #ifdef CONFIG_HOTPLUG_CPU
 
@@ -223,7 +211,7 @@ int lttng_perf_counter_cpu_hp_callback(struct notifier_block *nb,
 
 #endif
 
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 
 int lttng_add_perf_counter_to_ctx(uint32_t type,
                                  uint64_t config,
@@ -277,7 +265,7 @@ int lttng_add_perf_counter_to_ctx(uint32_t type,
                goto find_error;
        }
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
 
        perf_field->cpuhp_prepare.component = LTTNG_CONTEXT_PERF_COUNTERS;
        ret = cpuhp_state_add_instance(lttng_hp_prepare,
@@ -291,7 +279,7 @@ int lttng_add_perf_counter_to_ctx(uint32_t type,
        if (ret)
                goto cpuhp_online_error;
 
-#else  /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#else  /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
        {
                int cpu;
 
@@ -301,7 +289,7 @@ 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);
@@ -314,10 +302,10 @@ 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 (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 
        field->destroy = lttng_destroy_perf_counter_field;
 
@@ -334,10 +322,10 @@ int lttng_add_perf_counter_to_ctx(uint32_t type,
        field->u.perf_counter = perf_field;
        lttng_context_update(*ctx);
 
-       wrapper_vmalloc_sync_all();
+       wrapper_vmalloc_sync_mappings();
        return 0;
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
 cpuhp_online_error:
        {
                int remove_ret;
@@ -347,7 +335,7 @@ cpuhp_online_error:
                WARN_ON(remove_ret);
        }
 cpuhp_prepare_error:
-#else  /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#else  /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 counter_busy:
 counter_error:
        {
@@ -357,12 +345,12 @@ 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
        }
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 find_error:
        lttng_remove_context_field(ctx, field);
 append_context_error: