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soc: qcom: qcom_stats: Create debugfs files for subsystems

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Currently qcom_stats driver creates subsystem files in debugfs only if
qcom_smem_get() returns item pointer however this is true when subsystem
allocates particular smem item. If the qcom_stats driver gets probed
before all subsystems allocates smem then we will never see the same
subsystem stats entry in debugfs.

This change is to remove the dependency of other subsystems allocating
item in smem and instead create debugfs files for all present subsystems.

Change-Id: I199acbd7a6164c7c063e0f6ff0c880dcc9fd59e5
Signed-off-by: Tushar Nimkar <tnimkar@codeaurora.org>
Signed-off-by: Maulik Shah <quic_mkshah@quicinc.com>
This commit is contained in:
Tushar Nimkar 2021-03-26 16:08:03 +05:30 committed by Gerrit - the friendly Code Review server
parent ad372344c0
commit 6269abd251
1 changed files with 20 additions and 10 deletions
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30
drivers/soc/qcom/qcom_stats.c
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@ -11,6 +11,7 @@
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/seq_file.h>
#include <linux/string.h>
#include <linux/soc/qcom/smem.h>
#include <clocksource/arm_arch_timer.h>
@ -266,21 +267,30 @@ static void qcom_create_soc_sleep_stat_files(struct dentry *root, void __iomem *
}
static void qcom_create_subsystem_stat_files(struct dentry *root,
const struct stats_config *config)
const struct stats_config *config,
struct device_node *node)
{
const struct sleep_stats *stat;
int i;
int i, j, n_subsystems;
const char *name;
if (!config->subsystem_stats_in_smem)
return;
for (i = 0; i < ARRAY_SIZE(subsystems); i++) {
stat = qcom_smem_get(subsystems[i].pid, subsystems[i].smem_item, NULL);
if (IS_ERR(stat))
continue;
n_subsystems = of_property_count_strings(node, "ss-name");
if (n_subsystems < 0)
return;
debugfs_create_file(subsystems[i].name, 0400, root, (void *)&subsystems[i],
&qcom_subsystem_sleep_stats_fops);
for (i = 0; i < n_subsystems; i++) {
of_property_read_string_index(node, "ss-name", i, &name);
for (j = 0; j < ARRAY_SIZE(subsystems); j++) {
if (!strcmp(subsystems[j].name, name)) {
debugfs_create_file(subsystems[j].name, 0400, root,
(void *)&subsystems[j],
&qcom_subsystem_sleep_stats_fops);
break;
}
}
}
}
@ -310,7 +320,7 @@ static int qcom_stats_probe(struct platform_device *pdev)
root = debugfs_create_dir("qcom_stats", NULL);
qcom_create_subsystem_stat_files(root, config);
qcom_create_subsystem_stat_files(root, config, pdev->dev.of_node);
qcom_create_soc_sleep_stat_files(root, reg, d, config);
qcom_create_ddr_stat_files(root, reg, d, config);