diff options
Diffstat (limited to 'include/linux/spi/spi.h')
| -rw-r--r-- | include/linux/spi/spi.h | 52 |
1 files changed, 29 insertions, 23 deletions
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index eadfd3ba3cbc..eac8d3caf954 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -17,6 +17,7 @@ #include <uapi/linux/spi/spi.h> #include <linux/acpi.h> +#include <linux/u64_stats_sync.h> struct dma_chan; struct software_node; @@ -59,37 +60,42 @@ extern struct bus_type spi_bus_type; * maxsize limit */ struct spi_statistics { - spinlock_t lock; /* lock for the whole structure */ + struct u64_stats_sync syncp; - unsigned long messages; - unsigned long transfers; - unsigned long errors; - unsigned long timedout; + u64_stats_t messages; + u64_stats_t transfers; + u64_stats_t errors; + u64_stats_t timedout; - unsigned long spi_sync; - unsigned long spi_sync_immediate; - unsigned long spi_async; + u64_stats_t spi_sync; + u64_stats_t spi_sync_immediate; + u64_stats_t spi_async; - unsigned long long bytes; - unsigned long long bytes_rx; - unsigned long long bytes_tx; + u64_stats_t bytes; + u64_stats_t bytes_rx; + u64_stats_t bytes_tx; #define SPI_STATISTICS_HISTO_SIZE 17 - unsigned long transfer_bytes_histo[SPI_STATISTICS_HISTO_SIZE]; + u64_stats_t transfer_bytes_histo[SPI_STATISTICS_HISTO_SIZE]; - unsigned long transfers_split_maxsize; + u64_stats_t transfers_split_maxsize; }; -#define SPI_STATISTICS_ADD_TO_FIELD(stats, field, count) \ - do { \ - unsigned long flags; \ - spin_lock_irqsave(&(stats)->lock, flags); \ - (stats)->field += count; \ - spin_unlock_irqrestore(&(stats)->lock, flags); \ +#define SPI_STATISTICS_ADD_TO_FIELD(pcpu_stats, field, count) \ + do { \ + struct spi_statistics *__lstats = this_cpu_ptr(pcpu_stats); \ + u64_stats_update_begin(&__lstats->syncp); \ + u64_stats_add(&__lstats->field, count); \ + u64_stats_update_end(&__lstats->syncp); \ } while (0) -#define SPI_STATISTICS_INCREMENT_FIELD(stats, field) \ - SPI_STATISTICS_ADD_TO_FIELD(stats, field, 1) +#define SPI_STATISTICS_INCREMENT_FIELD(pcpu_stats, field) \ + do { \ + struct spi_statistics *__lstats = this_cpu_ptr(pcpu_stats); \ + u64_stats_update_begin(&__lstats->syncp); \ + u64_stats_inc(&__lstats->field); \ + u64_stats_update_end(&__lstats->syncp); \ + } while (0) /** * struct spi_delay - SPI delay information @@ -194,7 +200,7 @@ struct spi_device { struct spi_delay cs_inactive; /* the statistics */ - struct spi_statistics statistics; + struct spi_statistics __percpu *pcpu_statistics; /* * likely need more hooks for more protocol options affecting how @@ -647,7 +653,7 @@ struct spi_controller { s8 max_native_cs; /* statistics */ - struct spi_statistics statistics; + struct spi_statistics __percpu *pcpu_statistics; /* DMA channels for use with core dmaengine helpers */ struct dma_chan *dma_tx; |