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parisc: convert /proc/gsc/pcxl_dma to seq_file
As side effect, remove one more ->get_info user and a novel approach of content generation: sprintf(buf, "%sfoo", buf, ...); sprintf(buf, "%sbar", buf, ...); ... Compile-tested. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
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fd3eef10f5
commit
27f282b9c6
1 changed files with 53 additions and 41 deletions
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@ -21,6 +21,7 @@
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#include <linux/mm.h>
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#include <linux/pci.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/types.h>
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@ -34,7 +35,6 @@
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#include <asm/tlbflush.h> /* for purge_tlb_*() macros */
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static struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
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static int pcxl_proc_info(char *buffer, char **start, off_t offset, int length);
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static unsigned long pcxl_used_bytes __read_mostly = 0;
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static unsigned long pcxl_used_pages __read_mostly = 0;
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@ -330,6 +330,54 @@ pcxl_free_range(unsigned long vaddr, size_t size)
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dump_resmap();
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}
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static int proc_pcxl_dma_show(struct seq_file *m, void *v)
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{
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#if 0
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u_long i = 0;
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unsigned long *res_ptr = (u_long *)pcxl_res_map;
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#endif
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unsigned long total_pages = pcxl_res_size << 3; /* 8 bits per byte */
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seq_printf(m, "\nDMA Mapping Area size : %d bytes (%ld pages)\n",
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PCXL_DMA_MAP_SIZE, total_pages);
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seq_printf(m, "Resource bitmap : %d bytes\n", pcxl_res_size);
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seq_puts(m, " total: free: used: % used:\n");
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seq_printf(m, "blocks %8d %8ld %8ld %8ld%%\n", pcxl_res_size,
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pcxl_res_size - pcxl_used_bytes, pcxl_used_bytes,
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(pcxl_used_bytes * 100) / pcxl_res_size);
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seq_printf(m, "pages %8ld %8ld %8ld %8ld%%\n", total_pages,
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total_pages - pcxl_used_pages, pcxl_used_pages,
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(pcxl_used_pages * 100 / total_pages));
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#if 0
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seq_puts(m, "\nResource bitmap:");
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for(; i < (pcxl_res_size / sizeof(u_long)); ++i, ++res_ptr) {
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if ((i & 7) == 0)
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seq_puts(m,"\n ");
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seq_printf(m, "%s %08lx", buf, *res_ptr);
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}
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#endif
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seq_putc(m, '\n');
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return 0;
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}
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static int proc_pcxl_dma_open(struct inode *inode, struct file *file)
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{
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return single_open(file, proc_pcxl_dma_show, NULL);
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}
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static const struct file_operations proc_pcxl_dma_ops = {
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.owner = THIS_MODULE,
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.open = proc_pcxl_dma_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static int __init
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pcxl_dma_init(void)
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{
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@ -348,9 +396,10 @@ pcxl_dma_init(void)
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"pcxl_dma_init: Unable to create gsc /proc dir entry\n");
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else {
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struct proc_dir_entry* ent;
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ent = create_proc_info_entry("pcxl_dma", 0,
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proc_gsc_root, pcxl_proc_info);
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if (!ent)
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ent = create_proc_entry("pcxl_dma", 0, proc_gsc_root);
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if (ent)
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ent->proc_fops = &proc_pcxl_dma_ops;
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else
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printk(KERN_WARNING
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"pci-dma.c: Unable to create pcxl_dma /proc entry.\n");
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}
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@ -551,40 +600,3 @@ struct hppa_dma_ops pcx_dma_ops = {
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.dma_sync_sg_for_cpu = pa11_dma_sync_sg_for_cpu,
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.dma_sync_sg_for_device = pa11_dma_sync_sg_for_device,
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};
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static int pcxl_proc_info(char *buf, char **start, off_t offset, int len)
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{
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#if 0
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u_long i = 0;
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unsigned long *res_ptr = (u_long *)pcxl_res_map;
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#endif
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unsigned long total_pages = pcxl_res_size << 3; /* 8 bits per byte */
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sprintf(buf, "\nDMA Mapping Area size : %d bytes (%ld pages)\n",
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PCXL_DMA_MAP_SIZE, total_pages);
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sprintf(buf, "%sResource bitmap : %d bytes\n", buf, pcxl_res_size);
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strcat(buf, " total: free: used: % used:\n");
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sprintf(buf, "%sblocks %8d %8ld %8ld %8ld%%\n", buf, pcxl_res_size,
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pcxl_res_size - pcxl_used_bytes, pcxl_used_bytes,
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(pcxl_used_bytes * 100) / pcxl_res_size);
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sprintf(buf, "%spages %8ld %8ld %8ld %8ld%%\n", buf, total_pages,
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total_pages - pcxl_used_pages, pcxl_used_pages,
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(pcxl_used_pages * 100 / total_pages));
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#if 0
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strcat(buf, "\nResource bitmap:");
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for(; i < (pcxl_res_size / sizeof(u_long)); ++i, ++res_ptr) {
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if ((i & 7) == 0)
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strcat(buf,"\n ");
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sprintf(buf, "%s %08lx", buf, *res_ptr);
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}
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#endif
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strcat(buf, "\n");
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return strlen(buf);
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}
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