[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20231018061714.3553817-16-s.hauer@pengutronix.de>
Date: Wed, 18 Oct 2023 08:17:03 +0200
From: Sascha Hauer <s.hauer@...gutronix.de>
To: linux-rockchip@...ts.infradead.org
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-pm@...r.kernel.org, Heiko Stuebner <heiko@...ech.de>,
Chanwoo Choi <chanwoo@...nel.org>,
Kyungmin Park <kyungmin.park@...sung.com>,
MyungJoo Ham <myungjoo.ham@...sung.com>,
Will Deacon <will@...nel.org>,
Mark Rutland <mark.rutland@....com>, kernel@...gutronix.de,
Michael Riesch <michael.riesch@...fvision.net>,
Robin Murphy <robin.murphy@....com>,
Vincent Legoll <vincent.legoll@...il.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
Sebastian Reichel <sebastian.reichel@...labora.com>,
Sascha Hauer <s.hauer@...gutronix.de>,
Chanwoo Choi <cw00.choi@...sung.com>
Subject: [PATCH v8 15/26] PM / devfreq: rockchip-dfi: give variable a better name
struct dmc_count_channel::total counts the clock cycles of the DDR
controller. Rename it accordingly to give the reader a better idea
what this is about. While at it, at some documentation to struct
dmc_count_channel.
Reviewed-by: Sebastian Reichel <sebastian.reichel@...labora.com>
Acked-by: Chanwoo Choi <cw00.choi@...sung.com>
Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
---
drivers/devfreq/event/rockchip-dfi.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c
index 7a4f1901314d4..3d5c6d737ccd9 100644
--- a/drivers/devfreq/event/rockchip-dfi.c
+++ b/drivers/devfreq/event/rockchip-dfi.c
@@ -46,9 +46,14 @@
#define DDRMON_CH1_COUNT_NUM 0x3c
#define DDRMON_CH1_DFI_ACCESS_NUM 0x40
+/**
+ * struct dmc_count_channel - structure to hold counter values from the DDR controller
+ * @access: Number of read and write accesses
+ * @clock_cycles: DDR clock cycles
+ */
struct dmc_count_channel {
u32 access;
- u32 total;
+ u32 clock_cycles;
};
struct dmc_count {
@@ -151,7 +156,7 @@ static void rockchip_dfi_read_counters(struct rockchip_dfi *dfi, struct dmc_coun
continue;
count->c[i].access = readl_relaxed(dfi_regs +
DDRMON_CH0_DFI_ACCESS_NUM + i * 20);
- count->c[i].total = readl_relaxed(dfi_regs +
+ count->c[i].clock_cycles = readl_relaxed(dfi_regs +
DDRMON_CH0_COUNT_NUM + i * 20);
}
}
@@ -183,29 +188,29 @@ static int rockchip_dfi_get_event(struct devfreq_event_dev *edev,
struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev);
struct dmc_count count;
struct dmc_count *last = &dfi->last_event_count;
- u32 access = 0, total = 0;
+ u32 access = 0, clock_cycles = 0;
int i;
rockchip_dfi_read_counters(dfi, &count);
/* We can only report one channel, so find the busiest one */
for (i = 0; i < dfi->max_channels; i++) {
- u32 a, t;
+ u32 a, c;
if (!(dfi->channel_mask & BIT(i)))
continue;
a = count.c[i].access - last->c[i].access;
- t = count.c[i].total - last->c[i].total;
+ c = count.c[i].clock_cycles - last->c[i].clock_cycles;
if (a > access) {
access = a;
- total = t;
+ clock_cycles = c;
}
}
edata->load_count = access * 4;
- edata->total_count = total;
+ edata->total_count = clock_cycles;
dfi->last_event_count = count;
--
2.39.2
Powered by blists - more mailing lists