Merge branch 'tracing/ftrace' into tracing/urgent

[linux-2.6-omap-h63xx.git] / drivers / parisc / ccio-dma.c

diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index 07d2a8d4498f395f52e822b9ff493555e1f3d600..dcc1e9958d2f9bb0b0fd3625c43ed9eaf806bfd2 100644 (file)
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -66,15 +66,8 @@
 #undef DEBUG_CCIO_RUN_SG
 
 #ifdef CONFIG_PROC_FS
-/*
- * CCIO_SEARCH_TIME can help measure how fast the bitmap search is.
- * impacts performance though - ditch it if you don't use it.
- */
-#define CCIO_SEARCH_TIME
-#undef CCIO_MAP_STATS
-#else
-#undef CCIO_SEARCH_TIME
-#undef CCIO_MAP_STATS
+/* depends on proc fs support. But costs CPU performance. */
+#undef CCIO_COLLECT_STATS
 #endif
 
 #include <linux/proc_fs.h>
@@ -239,12 +232,10 @@ struct ioc {
        u32 res_size;                   /* size of resource map in bytes */
        spinlock_t res_lock;
 
-#ifdef CCIO_SEARCH_TIME
+#ifdef CCIO_COLLECT_STATS
 #define CCIO_SEARCH_SAMPLE 0x100
        unsigned long avg_search[CCIO_SEARCH_SAMPLE];
        unsigned long avg_idx;            /* current index into avg_search */
-#endif
-#ifdef CCIO_MAP_STATS
        unsigned long used_pages;
        unsigned long msingle_calls;
        unsigned long msingle_pages;
@@ -351,7 +342,7 @@ ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size)
        unsigned int pages_needed = size >> IOVP_SHIFT;
        unsigned int res_idx;
        unsigned long boundary_size;
-#ifdef CCIO_SEARCH_TIME
+#ifdef CCIO_COLLECT_STATS
        unsigned long cr_start = mfctl(16);
 #endif
        
@@ -359,7 +350,7 @@ ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size)
        BUG_ON((pages_needed * IOVP_SIZE) > DMA_CHUNK_SIZE);
      
        DBG_RES("%s() size: %d pages_needed %d\n", 
-               __FUNCTION__, size, pages_needed);
+               __func__, size, pages_needed);
 
        /*
        ** "seek and ye shall find"...praying never hurts either...
@@ -395,18 +386,18 @@ ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size)
 #endif
        } else {
                panic("%s: %s() Too many pages to map. pages_needed: %u\n",
-                      __FILE__,  __FUNCTION__, pages_needed);
+                      __FILE__,  __func__, pages_needed);
        }
 
        panic("%s: %s() I/O MMU is out of mapping resources.\n", __FILE__,
-             __FUNCTION__);
+             __func__);
        
 resource_found:
        
        DBG_RES("%s() res_idx %d res_hint: %d\n",
-               __FUNCTION__, res_idx, ioc->res_hint);
+               __func__, res_idx, ioc->res_hint);
 
-#ifdef CCIO_SEARCH_TIME
+#ifdef CCIO_COLLECT_STATS
        {
                unsigned long cr_end = mfctl(16);
                unsigned long tmp = cr_end - cr_start;
@@ -416,7 +407,7 @@ resource_found:
        ioc->avg_search[ioc->avg_idx++] = cr_start;
        ioc->avg_idx &= CCIO_SEARCH_SAMPLE - 1;
 #endif
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
        ioc->used_pages += pages_needed;
 #endif
        /* 
@@ -450,9 +441,9 @@ ccio_free_range(struct ioc *ioc, dma_addr_t iova, unsigned long pages_mapped)
        BUG_ON(pages_mapped > BITS_PER_LONG);
 
        DBG_RES("%s():  res_idx: %d pages_mapped %d\n", 
-               __FUNCTION__, res_idx, pages_mapped);
+               __func__, res_idx, pages_mapped);
 
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
        ioc->used_pages -= pages_mapped;
 #endif
 
@@ -474,7 +465,7 @@ ccio_free_range(struct ioc *ioc, dma_addr_t iova, unsigned long pages_mapped)
 #endif
        } else {
                panic("%s:%s() Too many pages to unmap.\n", __FILE__,
-                     __FUNCTION__);
+                     __func__);
        }
 }
 
@@ -764,7 +755,7 @@ ccio_map_single(struct device *dev, void *addr, size_t size,
        size = ALIGN(size + offset, IOVP_SIZE);
        spin_lock_irqsave(&ioc->res_lock, flags);
 
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
        ioc->msingle_calls++;
        ioc->msingle_pages += size >> IOVP_SHIFT;
 #endif
@@ -775,7 +766,7 @@ ccio_map_single(struct device *dev, void *addr, size_t size,
        pdir_start = &(ioc->pdir_base[idx]);
 
        DBG_RUN("%s() 0x%p -> 0x%lx size: %0x%x\n",
-               __FUNCTION__, addr, (long)iovp | offset, size);
+               __func__, addr, (long)iovp | offset, size);
 
        /* If not cacheline aligned, force SAFE_DMA on the whole mess */
        if((size % L1_CACHE_BYTES) || ((unsigned long)addr % L1_CACHE_BYTES))
@@ -820,7 +811,7 @@ ccio_unmap_single(struct device *dev, dma_addr_t iova, size_t size,
        ioc = GET_IOC(dev);
 
        DBG_RUN("%s() iovp 0x%lx/%x\n",
-               __FUNCTION__, (long)iova, size);
+               __func__, (long)iova, size);
 
        iova ^= offset;        /* clear offset bits */
        size += offset;
@@ -828,7 +819,7 @@ ccio_unmap_single(struct device *dev, dma_addr_t iova, size_t size,
 
        spin_lock_irqsave(&ioc->res_lock, flags);
 
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
        ioc->usingle_calls++;
        ioc->usingle_pages += size >> IOVP_SHIFT;
 #endif
@@ -894,7 +885,7 @@ ccio_free_consistent(struct device *dev, size_t size, void *cpu_addr,
 */
 #define PIDE_FLAG 0x80000000UL
 
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
 #define IOMMU_MAP_STATS
 #endif
 #include "iommu-helpers.h"
@@ -922,7 +913,7 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
        BUG_ON(!dev);
        ioc = GET_IOC(dev);
        
-       DBG_RUN_SG("%s() START %d entries\n", __FUNCTION__, nents);
+       DBG_RUN_SG("%s() START %d entries\n", __func__, nents);
 
        /* Fast path single entry scatterlists. */
        if (nents == 1) {
@@ -938,7 +929,7 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
        
        spin_lock_irqsave(&ioc->res_lock, flags);
 
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
        ioc->msg_calls++;
 #endif
 
@@ -966,7 +957,7 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
 
        BUG_ON(coalesced != filled);
 
-       DBG_RUN_SG("%s() DONE %d mappings\n", __FUNCTION__, filled);
+       DBG_RUN_SG("%s() DONE %d mappings\n", __func__, filled);
 
        for (i = 0; i < filled; i++)
                current_len += sg_dma_len(sglist + i);
@@ -995,15 +986,15 @@ ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
        ioc = GET_IOC(dev);
 
        DBG_RUN_SG("%s() START %d entries,  %08lx,%x\n",
-               __FUNCTION__, nents, sg_virt_addr(sglist), sglist->length);
+               __func__, nents, sg_virt_addr(sglist), sglist->length);
 
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
        ioc->usg_calls++;
 #endif
 
        while(sg_dma_len(sglist) && nents--) {
 
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
                ioc->usg_pages += sg_dma_len(sglist) >> PAGE_SHIFT;
 #endif
                ccio_unmap_single(dev, sg_dma_address(sglist),
@@ -1011,7 +1002,7 @@ ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
                ++sglist;
        }
 
-       DBG_RUN_SG("%s() DONE (nents %d)\n", __FUNCTION__, nents);
+       DBG_RUN_SG("%s() DONE (nents %d)\n", __func__, nents);
 }
 
 static struct hppa_dma_ops ccio_ops = {
@@ -1048,7 +1039,7 @@ static int ccio_proc_info(struct seq_file *m, void *p)
                len += seq_printf(m, "IO PDIR size    : %d bytes (%d entries)\n",
                               total_pages * 8, total_pages);
 
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
                len += seq_printf(m, "IO PDIR entries : %ld free  %ld used (%d%%)\n",
                                  total_pages - ioc->used_pages, ioc->used_pages,
                                  (int)(ioc->used_pages * 100 / total_pages));
@@ -1057,7 +1048,7 @@ static int ccio_proc_info(struct seq_file *m, void *p)
                len += seq_printf(m, "Resource bitmap : %d bytes (%d pages)\n", 
                                  ioc->res_size, total_pages);
 
-#ifdef CCIO_SEARCH_TIME
+#ifdef CCIO_COLLECT_STATS
                min = max = ioc->avg_search[0];
                for(j = 0; j < CCIO_SEARCH_SAMPLE; ++j) {
                        avg += ioc->avg_search[j];
@@ -1070,7 +1061,7 @@ static int ccio_proc_info(struct seq_file *m, void *p)
                len += seq_printf(m, "  Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n",
                                  min, avg, max);
 #endif
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
                len += seq_printf(m, "pci_map_single(): %8ld calls  %8ld pages (avg %d/1000)\n",
                                  ioc->msingle_calls, ioc->msingle_pages,
                                  (int)((ioc->msingle_pages * 1000)/ioc->msingle_calls));
@@ -1088,7 +1079,7 @@ static int ccio_proc_info(struct seq_file *m, void *p)
                len += seq_printf(m, "pci_unmap_sg()  : %8ld calls  %8ld pages (avg %d/1000)\n\n\n",
                                  ioc->usg_calls, ioc->usg_pages,
                                  (int)((ioc->usg_pages * 1000)/ioc->usg_calls));
-#endif /* CCIO_MAP_STATS */
+#endif /* CCIO_COLLECT_STATS */
 
                ioc = ioc->next;
        }
@@ -1225,7 +1216,7 @@ static int
 ccio_get_iotlb_size(struct parisc_device *dev)
 {
        if (dev->spa_shift == 0) {
-               panic("%s() : Can't determine I/O TLB size.\n", __FUNCTION__);
+               panic("%s() : Can't determine I/O TLB size.\n", __func__);
        }
        return (1 << dev->spa_shift);
 }
@@ -1315,7 +1306,7 @@ ccio_ioc_init(struct ioc *ioc)
        BUG_ON((1 << get_order(ioc->pdir_size)) != (ioc->pdir_size >> PAGE_SHIFT));
 
        DBG_INIT("%s() hpa 0x%p mem %luMB IOV %dMB (%d bits)\n",
-                       __FUNCTION__, ioc->ioc_regs,
+                       __func__, ioc->ioc_regs,
                        (unsigned long) num_physpages >> (20 - PAGE_SHIFT),
                        iova_space_size>>20,
                        iov_order + PAGE_SHIFT);
@@ -1323,7 +1314,7 @@ ccio_ioc_init(struct ioc *ioc)
        ioc->pdir_base = (u64 *)__get_free_pages(GFP_KERNEL, 
                                                 get_order(ioc->pdir_size));
        if(NULL == ioc->pdir_base) {
-               panic("%s() could not allocate I/O Page Table\n", __FUNCTION__);
+               panic("%s() could not allocate I/O Page Table\n", __func__);
        }
        memset(ioc->pdir_base, 0, ioc->pdir_size);
 
@@ -1332,12 +1323,12 @@ ccio_ioc_init(struct ioc *ioc)
 
        /* resource map size dictated by pdir_size */
        ioc->res_size = (ioc->pdir_size / sizeof(u64)) >> 3;
-       DBG_INIT("%s() res_size 0x%x\n", __FUNCTION__, ioc->res_size);
+       DBG_INIT("%s() res_size 0x%x\n", __func__, ioc->res_size);
        
        ioc->res_map = (u8 *)__get_free_pages(GFP_KERNEL, 
                                              get_order(ioc->res_size));
        if(NULL == ioc->res_map) {
-               panic("%s() could not allocate resource map\n", __FUNCTION__);
+               panic("%s() could not allocate resource map\n", __func__);
        }
        memset(ioc->res_map, 0, ioc->res_size);
 
@@ -1409,7 +1400,7 @@ ccio_init_resource(struct resource *res, char *name, void __iomem *ioaddr)
        result = insert_resource(&iomem_resource, res);
        if (result < 0) {
                printk(KERN_ERR "%s() failed to claim CCIO bus address space (%08lx,%08lx)\n", 
-                       __FUNCTION__, res->start, res->end);
+                       __func__, res->start, res->end);
        }
 }