mirror of
https://github.com/varun-r-mallya/sysprof.git
synced 2025-12-31 20:36:25 +00:00
governor: add source to toggle CPU governer while running
This commit is contained in:
Christian Hergert
@ -9,6 +9,7 @@ libsysprof_public_sources = [
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'sysprof-capture-symbol-resolver.c',
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'sysprof-elf-symbol-resolver.c',
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'sysprof-gjs-source.c',
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'sysprof-governor-source.c',
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'sysprof-hostinfo-source.c',
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'sysprof-jitmap-symbol-resolver.c',
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'sysprof-kernel-symbol.c',
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@ -35,6 +36,7 @@ libsysprof_public_headers = [
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'sysprof-capture-symbol-resolver.h',
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'sysprof-elf-symbol-resolver.h',
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'sysprof-gjs-source.h',
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'sysprof-governor-source.h',
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'sysprof-hostinfo-source.h',
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'sysprof-jitmap-symbol-resolver.h',
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'sysprof-kernel-symbol.h',
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266
src/libsysprof/sysprof-governor-source.c
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266
src/libsysprof/sysprof-governor-source.c
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@ -0,0 +1,266 @@
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/* sysprof-governor-source.c
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*
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* Copyright 2019 Christian Hergert <chergert@redhat.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#define G_LOG_DOMAIN "sysprof-governor-source"
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#include "config.h"
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#include "sysprof-governor-source.h"
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#include "sysprof-helpers.h"
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struct _SysprofGovernorSource
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{
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GObject parent_instance;
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gchar *old_governor;
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guint disable_governor : 1;
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};
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enum {
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PROP_0,
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PROP_DISABLE_GOVERNOR,
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N_PROPS
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};
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static void source_iface_init (SysprofSourceInterface *iface);
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G_DEFINE_TYPE_WITH_CODE (SysprofGovernorSource, sysprof_governor_source, G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (SYSPROF_TYPE_SOURCE, source_iface_init))
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static GParamSpec *properties [N_PROPS];
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static void
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sysprof_governor_source_finalize (GObject *object)
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{
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SysprofGovernorSource *self = (SysprofGovernorSource *)object;
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g_clear_pointer (&self->old_governor, g_free);
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G_OBJECT_CLASS (sysprof_governor_source_parent_class)->finalize (object);
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}
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static void
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sysprof_governor_source_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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SysprofGovernorSource *self = SYSPROF_GOVERNOR_SOURCE (object);
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switch (prop_id)
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{
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case PROP_DISABLE_GOVERNOR:
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g_value_set_boolean (value, sysprof_governor_source_get_disable_governor (self));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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sysprof_governor_source_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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SysprofGovernorSource *self = SYSPROF_GOVERNOR_SOURCE (object);
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switch (prop_id)
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{
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case PROP_DISABLE_GOVERNOR:
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sysprof_governor_source_set_disable_governor (self, g_value_get_boolean (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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sysprof_governor_source_class_init (SysprofGovernorSourceClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = sysprof_governor_source_finalize;
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object_class->get_property = sysprof_governor_source_get_property;
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object_class->set_property = sysprof_governor_source_set_property;
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properties [PROP_DISABLE_GOVERNOR] =
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g_param_spec_boolean ("disable-governor",
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"Disable Governor",
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"Disable Governor",
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TRUE,
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(G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
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g_object_class_install_properties (object_class, N_PROPS, properties);
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}
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static void
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sysprof_governor_source_init (SysprofGovernorSource *self)
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{
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self->disable_governor = TRUE;
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}
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SysprofSource *
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sysprof_governor_source_new (void)
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{
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return g_object_new (SYSPROF_TYPE_GOVERNOR_SOURCE, NULL);
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}
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gboolean
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sysprof_governor_source_get_disable_governor (SysprofGovernorSource *self)
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{
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g_return_val_if_fail (SYSPROF_IS_GOVERNOR_SOURCE (self), FALSE);
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return self->disable_governor;
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}
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void
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sysprof_governor_source_set_disable_governor (SysprofGovernorSource *self,
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gboolean disable_governor)
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{
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g_return_if_fail (SYSPROF_IS_GOVERNOR_SOURCE (self));
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disable_governor = !!disable_governor;
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if (disable_governor != self->disable_governor)
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{
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self->disable_governor = disable_governor;
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g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_DISABLE_GOVERNOR]);
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}
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}
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static void
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sysprof_governor_source_serialize (SysprofSource *source,
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GKeyFile *keyfile,
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const gchar *group)
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{
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SysprofGovernorSource *self = (SysprofGovernorSource *)source;
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g_assert (SYSPROF_IS_GOVERNOR_SOURCE (self));
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g_assert (keyfile != NULL);
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g_assert (group != NULL);
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g_key_file_set_boolean (keyfile, group, "disable-governor", self->disable_governor);
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}
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static void
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sysprof_governor_source_deserialize (SysprofSource *source,
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GKeyFile *keyfile,
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const gchar *group)
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{
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SysprofGovernorSource *self = (SysprofGovernorSource *)source;
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g_assert (SYSPROF_IS_GOVERNOR_SOURCE (self));
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g_assert (keyfile != NULL);
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g_assert (group != NULL);
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sysprof_governor_source_set_disable_governor (self,
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g_key_file_get_boolean (keyfile, group, "disable-governor", NULL));
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}
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static void
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disable_governor_cb (GObject *object,
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GAsyncResult *result,
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gpointer user_data)
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{
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SysprofHelpers *helpers = (SysprofHelpers *)object;
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g_autoptr(SysprofGovernorSource) self = user_data;
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g_autoptr(GError) error = NULL;
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g_autofree gchar *old_governor = NULL;
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g_assert (SYSPROF_IS_HELPERS (helpers));
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g_assert (G_IS_ASYNC_RESULT (result));
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g_assert (SYSPROF_IS_GOVERNOR_SOURCE (self));
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if (!sysprof_helpers_set_governor_finish (helpers, result, &old_governor, &error))
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g_warning ("Failed to change governor: %s", error->message);
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else
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self->old_governor = g_steal_pointer (&old_governor);
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sysprof_source_emit_ready (SYSPROF_SOURCE (self));
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}
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static void
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enable_governor_cb (GObject *object,
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GAsyncResult *result,
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gpointer user_data)
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{
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SysprofHelpers *helpers = (SysprofHelpers *)object;
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g_autoptr(SysprofGovernorSource) self = user_data;
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g_autoptr(GError) error = NULL;
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g_autofree gchar *old_governor = NULL;
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g_assert (SYSPROF_IS_HELPERS (helpers));
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g_assert (G_IS_ASYNC_RESULT (result));
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g_assert (SYSPROF_IS_GOVERNOR_SOURCE (self));
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if (!sysprof_helpers_set_governor_finish (helpers, result, &old_governor, &error))
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g_warning ("Failed to change governor: %s", error->message);
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g_clear_pointer (&self->old_governor, g_free);
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sysprof_source_emit_finished (SYSPROF_SOURCE (self));
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}
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static void
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sysprof_governor_source_prepare (SysprofSource *source)
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{
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SysprofGovernorSource *self = (SysprofGovernorSource *)source;
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SysprofHelpers *helpers = sysprof_helpers_get_default ();
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g_assert (SYSPROF_IS_GOVERNOR_SOURCE (self));
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if (!self->disable_governor)
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sysprof_source_emit_ready (source);
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else
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sysprof_helpers_set_governor_async (helpers,
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"performance",
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NULL,
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disable_governor_cb,
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g_object_ref (self));
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}
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static void
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sysprof_governor_source_stop (SysprofSource *source)
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{
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SysprofGovernorSource *self = (SysprofGovernorSource *)source;
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SysprofHelpers *helpers = sysprof_helpers_get_default ();
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g_assert (SYSPROF_IS_GOVERNOR_SOURCE (self));
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if (self->old_governor == NULL)
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sysprof_source_emit_finished (source);
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else
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sysprof_helpers_set_governor_async (helpers,
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self->old_governor,
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NULL,
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enable_governor_cb,
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g_object_ref (self));
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}
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static void
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source_iface_init (SysprofSourceInterface *iface)
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{
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iface->deserialize = sysprof_governor_source_deserialize;
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iface->prepare = sysprof_governor_source_prepare;
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iface->serialize = sysprof_governor_source_serialize;
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iface->stop = sysprof_governor_source_stop;
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}
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40
src/libsysprof/sysprof-governor-source.h
Normal file
40
src/libsysprof/sysprof-governor-source.h
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@ -0,0 +1,40 @@
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/* sysprof-governor-source.h
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*
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* Copyright 2019 Christian Hergert <chergert@redhat.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#pragma once
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#include "sysprof-source.h"
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G_BEGIN_DECLS
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#define SYSPROF_TYPE_GOVERNOR_SOURCE (sysprof_governor_source_get_type())
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SYSPROF_AVAILABLE_IN_ALL
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G_DECLARE_FINAL_TYPE (SysprofGovernorSource, sysprof_governor_source, SYSPROF, GOVERNOR_SOURCE, GObject)
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SYSPROF_AVAILABLE_IN_ALL
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SysprofSource *sysprof_governor_source_new (void);
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SYSPROF_AVAILABLE_IN_ALL
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gboolean sysprof_governor_source_get_disable_governor (SysprofGovernorSource *self);
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SYSPROF_AVAILABLE_IN_ALL
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void sysprof_governor_source_set_disable_governor (SysprofGovernorSource *self,
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gboolean disable_governor);
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G_END_DECLS
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@ -30,6 +30,7 @@ G_BEGIN_DECLS
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# include "sysprof-capture-symbol-resolver.h"
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# include "sysprof-elf-symbol-resolver.h"
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# include "sysprof-gjs-source.h"
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# include "sysprof-governor-source.h"
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# include "sysprof-jitmap-symbol-resolver.h"
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# include "sysprof-kernel-symbol-resolver.h"
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# include "sysprof-kernel-symbol.h"
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