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drivers: qcom: subsystem_sleep_stats: Reuse apss stats if available

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rpmh_master_stats driver maintained apss master stats. If it does
apss_master_stats.version_id get updated to non-zero value.

This change adds support to reuse already calculated data. Also
while doing this converts duration(ticks) to msec.

Change-Id: I5a1db5cc9543deba68e3c047223f6e93c635b733
Signed-off-by: Tushar Nimkar <tnimkar@codeaurora.org>
This commit is contained in:
Tushar Nimkar 2021-09-16 15:13:57 +05:30 • committed by Gerrit - the friendly Code Review server
commit 11a0c92017
1 changed files with 23 additions and 1 deletions
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24
drivers/soc/qcom/subsystem_sleep_stats.c
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@ -13,6 +13,7 @@
#include <linux/slab.h>
#include <linux/soc/qcom/smem.h>
#include <linux/uaccess.h>
#include "rpmh_master_stat.h"
#define STATS_BASEMINOR 0
#define STATS_MAX_MINOR 1
@ -28,6 +29,8 @@
#define DDR_STATS_COUNT_ADDR 0x4
#define DDR_STATS_DURATION_ADDR 0x8
#define MSM_ARCH_TIMER_FREQ 19200000
#define APSS_IOCTL _IOR(SUBSYSTEM_STATS_MAGIC_NUM, 0, \
struct sleep_stats *)
#define MODEM_IOCTL _IOR(SUBSYSTEM_STATS_MAGIC_NUM, 1, \
@ -117,6 +120,13 @@ struct sleep_stats_data {
static DEFINE_MUTEX(sleep_stats_mutex);
static inline u64 get_time_in_msec(u64 counter)
{
do_div(counter, MSM_ARCH_TIMER_FREQ);
counter *= MSEC_PER_SEC;
return counter;
}
static int stats_data_open(struct inode *inode, struct file *file)
{
struct sleep_stats_data *drvdata = NULL;
@ -142,6 +152,7 @@ static void ddr_stats_sleep_stat(struct sleep_stats_data *stats_data, struct sle
(ddr_stats + i)->last_entered_at = 0xDEADDEAD;
(ddr_stats + i)->last_exited_at = 0xDEADDEAD;
(ddr_stats + i)->accumulated = readq_relaxed(reg + DDR_STATS_DURATION_ADDR);
(ddr_stats + i)->accumulated = get_time_in_msec((ddr_stats + i)->accumulated);
reg += sizeof(struct sleep_stats) - 2 * sizeof(u64);
}
}
@ -154,7 +165,18 @@ static int subsystem_sleep_stats(struct sleep_stats_data *stats_data, struct sle
if (pid == SUBSYSTEM_STATS_OTHERS_NUM)
memcpy_fromio(stats, stats_data->reg[idx], sizeof(*stats));
else {
subsystem_stats_data = qcom_smem_get(pid, idx, NULL);
/* Check if HLOS already maintained APSS stats */
if (pid == QCOM_SMEM_HOST_ANY) {
struct msm_rpmh_master_stats *apss_data = msm_rpmh_get_apss_data();
if (apss_data && apss_data->version_id == 0x1)
subsystem_stats_data = (struct sleep_stats *) apss_data;
else
subsystem_stats_data = qcom_smem_get(pid, idx, NULL);
} else {
subsystem_stats_data = qcom_smem_get(pid, idx, NULL);
}
if (IS_ERR(subsystem_stats_data))
return -ENODEV;