From 15eaa3aed499941599c28e79dd40281a2de739c7 Mon Sep 17 00:00:00 2001 From: Lorenz Meier Date: Wed, 14 May 2014 14:00:51 +0200 Subject: [PATCH] eeprom driver: Use less excessive perf counters on EEPROM --- src/systemcmds/mtd/24xxxx_mtd.c | 36 ++++++++++++++------------------- 1 file changed, 15 insertions(+), 21 deletions(-) diff --git a/src/systemcmds/mtd/24xxxx_mtd.c b/src/systemcmds/mtd/24xxxx_mtd.c index e34be44e31..a3f9dfffff 100644 --- a/src/systemcmds/mtd/24xxxx_mtd.c +++ b/src/systemcmds/mtd/24xxxx_mtd.c @@ -142,12 +142,9 @@ struct at24c_dev_s { uint16_t pagesize; /* 32, 63 */ uint16_t npages; /* 128, 256, 512, 1024 */ - perf_counter_t perf_reads; - perf_counter_t perf_writes; - perf_counter_t perf_resets; - perf_counter_t perf_read_retries; - perf_counter_t perf_read_errors; - perf_counter_t perf_write_errors; + perf_counter_t perf_transfers; + perf_counter_t perf_resets_retries; + perf_counter_t perf_errors; }; /************************************************************************************ @@ -298,9 +295,9 @@ static ssize_t at24c_bread(FAR struct mtd_dev_s *dev, off_t startblock, for (;;) { - perf_begin(priv->perf_reads); + perf_begin(priv->perf_transfers); ret = I2C_TRANSFER(priv->dev, &msgv[0], 2); - perf_end(priv->perf_reads); + perf_end(priv->perf_transfers); if (ret >= 0) break; @@ -314,10 +311,10 @@ static ssize_t at24c_bread(FAR struct mtd_dev_s *dev, off_t startblock, * XXX maybe do special first-read handling with optional * bus reset as well? */ - perf_count(priv->perf_read_retries); + perf_count(priv->perf_resets_retries); if (--tries == 0) { - perf_count(priv->perf_read_errors); + perf_count(priv->perf_errors); return ERROR; } } @@ -383,9 +380,9 @@ static ssize_t at24c_bwrite(FAR struct mtd_dev_s *dev, off_t startblock, size_t for (;;) { - perf_begin(priv->perf_writes); + perf_begin(priv->perf_transfers); ret = I2C_TRANSFER(priv->dev, &msgv[0], 1); - perf_end(priv->perf_writes); + perf_end(priv->perf_transfers); if (ret >= 0) break; @@ -397,7 +394,7 @@ static ssize_t at24c_bwrite(FAR struct mtd_dev_s *dev, off_t startblock, size_t * poll for write completion. */ if (--tries == 0) { - perf_count(priv->perf_write_errors); + perf_count(priv->perf_errors); return ERROR; } } @@ -521,12 +518,9 @@ FAR struct mtd_dev_s *at24c_initialize(FAR struct i2c_dev_s *dev) { priv->mtd.ioctl = at24c_ioctl; priv->dev = dev; - priv->perf_reads = perf_alloc(PC_ELAPSED, "EEPROM read"); - priv->perf_writes = perf_alloc(PC_ELAPSED, "EEPROM write"); - priv->perf_resets = perf_alloc(PC_COUNT, "EEPROM reset"); - priv->perf_read_retries = perf_alloc(PC_COUNT, "EEPROM read retries"); - priv->perf_read_errors = perf_alloc(PC_COUNT, "EEPROM read errors"); - priv->perf_write_errors = perf_alloc(PC_COUNT, "EEPROM write errors"); + priv->perf_transfers = perf_alloc(PC_ELAPSED, "eeprom_trans"); + priv->perf_resets_retries = perf_alloc(PC_COUNT, "eeprom_rst"); + priv->perf_errors = perf_alloc(PC_COUNT, "eeprom_errs"); } /* attempt to read to validate device is present */ @@ -548,9 +542,9 @@ FAR struct mtd_dev_s *at24c_initialize(FAR struct i2c_dev_s *dev) { } }; - perf_begin(priv->perf_reads); + perf_begin(priv->perf_transfers); int ret = I2C_TRANSFER(priv->dev, &msgv[0], 2); - perf_end(priv->perf_reads); + perf_end(priv->perf_transfers); if (ret < 0) { return NULL;