diff options
Diffstat (limited to 'meta-eas/recipes-kernel/linux/linux-renesas/0075-sched-debug-Add-energy-procfs-interface.patch')
| -rw-r--r-- | meta-eas/recipes-kernel/linux/linux-renesas/0075-sched-debug-Add-energy-procfs-interface.patch | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/meta-eas/recipes-kernel/linux/linux-renesas/0075-sched-debug-Add-energy-procfs-interface.patch b/meta-eas/recipes-kernel/linux/linux-renesas/0075-sched-debug-Add-energy-procfs-interface.patch new file mode 100644 index 0000000..7073d2b --- /dev/null +++ b/meta-eas/recipes-kernel/linux/linux-renesas/0075-sched-debug-Add-energy-procfs-interface.patch @@ -0,0 +1,161 @@ +From 066fa940b25dc58b6618b785d82c90cbaa9b54d5 Mon Sep 17 00:00:00 2001 +From: Dietmar Eggemann <dietmar.eggemann@arm.com> +Date: Fri, 14 Nov 2014 16:25:50 +0000 +Subject: [PATCH 75/92] sched/debug: Add energy procfs interface +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This patch makes the energy data available via procfs. The related files +are placed as sub-directory named 'energy' inside the +/proc/sys/kernel/sched_domain/cpuX/domainY/groupZ directory for those +cpu/domain/group tuples which have energy information. + +The following example depicts the contents of +/proc/sys/kernel/sched_domain/cpu0/domain0/group[01] for a system which +has energy information attached to domain level 0. + +├── cpu0 +│ ├── domain0 +│ │ ├── busy_factor +│ │ ├── busy_idx +│ │ ├── cache_nice_tries +│ │ ├── flags +│ │ ├── forkexec_idx +│ │ ├── group0 +│ │ │ └── energy +│ │ │ ├── cap_states +│ │ │ ├── idle_states +│ │ │ ├── nr_cap_states +│ │ │ └── nr_idle_states +│ │ ├── group1 +│ │ │ └── energy +│ │ │ ├── cap_states +│ │ │ ├── idle_states +│ │ │ ├── nr_cap_states +│ │ │ └── nr_idle_states +│ │ ├── idle_idx +│ │ ├── imbalance_pct +│ │ ├── max_interval +│ │ ├── max_newidle_lb_cost +│ │ ├── min_interval +│ │ ├── name +│ │ ├── newidle_idx +│ │ └── wake_idx +│ └── domain1 +│ ├── busy_factor +│ ├── busy_idx +│ ├── cache_nice_tries +│ ├── flags +│ ├── forkexec_idx +│ ├── idle_idx +│ ├── imbalance_pct +│ ├── max_interval +│ ├── max_newidle_lb_cost +│ ├── min_interval +│ ├── name +│ ├── newidle_idx +│ └── wake_idx + +The files 'nr_idle_states' and 'nr_cap_states' contain a scalar value +whereas 'idle_states' and 'cap_states' contain a vector of power +consumption at this idle state respectively (compute capacity, power +consumption) at this capacity state. + +Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> +(cherry picked from commit 6bc112e3c581d16e3ebb7eb7abd396b7a2048169) +Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com> +--- + kernel/sched/debug.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++-- + 1 file changed, 65 insertions(+), 2 deletions(-) + +diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c +index fa178b6..48a621c 100644 +--- a/kernel/sched/debug.c ++++ b/kernel/sched/debug.c +@@ -261,9 +261,60 @@ static void sd_free_ctl_entry(struct ctl_table **tablep) + } + + static struct ctl_table * ++sd_alloc_ctl_energy_table(struct sched_group_energy *sge) ++{ ++ struct ctl_table *table = sd_alloc_ctl_entry(5); ++ ++ if (table == NULL) ++ return NULL; ++ ++ set_table_entry(&table[0], "nr_idle_states", &sge->nr_idle_states, ++ sizeof(int), 0644, proc_dointvec_minmax, false); ++ set_table_entry(&table[1], "idle_states", &sge->idle_states[0].power, ++ sge->nr_idle_states*sizeof(struct idle_state), 0644, ++ proc_doulongvec_minmax, false); ++ set_table_entry(&table[2], "nr_cap_states", &sge->nr_cap_states, ++ sizeof(int), 0644, proc_dointvec_minmax, false); ++ set_table_entry(&table[3], "cap_states", &sge->cap_states[0].cap, ++ sge->nr_cap_states*sizeof(struct capacity_state), 0644, ++ proc_doulongvec_minmax, false); ++ ++ return table; ++} ++ ++static struct ctl_table * ++sd_alloc_ctl_group_table(struct sched_group *sg) ++{ ++ struct ctl_table *table = sd_alloc_ctl_entry(2); ++ ++ if (table == NULL) ++ return NULL; ++ ++ table->procname = kstrdup("energy", GFP_KERNEL); ++ table->mode = 0555; ++ table->child = sd_alloc_ctl_energy_table((struct sched_group_energy *)sg->sge); ++ ++ return table; ++} ++ ++static struct ctl_table * + sd_alloc_ctl_domain_table(struct sched_domain *sd) + { +- struct ctl_table *table = sd_alloc_ctl_entry(14); ++ struct ctl_table *table; ++ unsigned int nr_entries = 14; ++ ++ int i = 0; ++ struct sched_group *sg = sd->groups; ++ ++ if (sg->sge) { ++ int nr_sgs = 0; ++ ++ do {} while (nr_sgs++, sg = sg->next, sg != sd->groups); ++ ++ nr_entries += nr_sgs; ++ } ++ ++ table = sd_alloc_ctl_entry(nr_entries); + + if (table == NULL) + return NULL; +@@ -296,7 +347,19 @@ static void sd_free_ctl_entry(struct ctl_table **tablep) + sizeof(long), 0644, proc_doulongvec_minmax, false); + set_table_entry(&table[12], "name", sd->name, + CORENAME_MAX_SIZE, 0444, proc_dostring, false); +- /* &table[13] is terminator */ ++ sg = sd->groups; ++ if (sg->sge) { ++ char buf[32]; ++ struct ctl_table *entry = &table[13]; ++ ++ do { ++ snprintf(buf, 32, "group%d", i); ++ entry->procname = kstrdup(buf, GFP_KERNEL); ++ entry->mode = 0555; ++ entry->child = sd_alloc_ctl_group_table(sg); ++ } while (entry++, i++, sg = sg->next, sg != sd->groups); ++ } ++ /* &table[nr_entries-1] is terminator */ + + return table; + } +-- +1.9.1 + |