Replace the two debugfs_create_file() loops by a call to the new debugfs_create_files() function. Add an empty element at the end of the two attribute arrays such that the array size does not have to be passed to debugfs_create_files().
Signed-off-by: Bart Van Assche <[email protected]> Cc: Omar Sandoval <[email protected]> --- block/blk-mq-debugfs.c | 34 +++++++++++++++++----------------- 1 file changed, 17 insertions(+), 17 deletions(-) diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index 846943728939..b3bc9f02a5f5 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -653,6 +653,7 @@ static const struct blk_mq_debugfs_attr blk_mq_debugfs_hctx_attrs[] = { {"queued", 0600, &hctx_queued_fops}, {"run", 0600, &hctx_run_fops}, {"active", 0400, &hctx_active_fops}, + {}, }; static const struct blk_mq_debugfs_attr blk_mq_debugfs_ctx_attrs[] = { @@ -660,6 +661,7 @@ static const struct blk_mq_debugfs_attr blk_mq_debugfs_ctx_attrs[] = { {"dispatched", 0600, &ctx_dispatched_fops}, {"merged", 0600, &ctx_merged_fops}, {"completed", 0600, &ctx_completed_fops}, + {}, }; int blk_mq_debugfs_register(struct request_queue *q, const char *name) @@ -688,27 +690,31 @@ void blk_mq_debugfs_unregister(struct request_queue *q) q->debugfs_dir = NULL; } +static bool debugfs_create_files(struct dentry *parent, void *data, + const struct blk_mq_debugfs_attr *attr) +{ + for (; attr->name; attr++) { + if (!debugfs_create_file(attr->name, attr->mode, parent, + data, attr->fops)) + return false; + } + return true; +} + static int blk_mq_debugfs_register_ctx(struct request_queue *q, struct blk_mq_ctx *ctx, struct dentry *hctx_dir) { struct dentry *ctx_dir; char name[20]; - int i; snprintf(name, sizeof(name), "cpu%u", ctx->cpu); ctx_dir = debugfs_create_dir(name, hctx_dir); if (!ctx_dir) return -ENOMEM; - for (i = 0; i < ARRAY_SIZE(blk_mq_debugfs_ctx_attrs); i++) { - const struct blk_mq_debugfs_attr *attr; - - attr = &blk_mq_debugfs_ctx_attrs[i]; - if (!debugfs_create_file(attr->name, attr->mode, ctx_dir, ctx, - attr->fops)) - return -ENOMEM; - } + if (!debugfs_create_files(ctx_dir, ctx, blk_mq_debugfs_ctx_attrs)) + return -ENOMEM; return 0; } @@ -726,14 +732,8 @@ static int blk_mq_debugfs_register_hctx(struct request_queue *q, if (!hctx_dir) return -ENOMEM; - for (i = 0; i < ARRAY_SIZE(blk_mq_debugfs_hctx_attrs); i++) { - const struct blk_mq_debugfs_attr *attr; - - attr = &blk_mq_debugfs_hctx_attrs[i]; - if (!debugfs_create_file(attr->name, attr->mode, hctx_dir, hctx, - attr->fops)) - return -ENOMEM; - } + if (!debugfs_create_files(hctx_dir, hctx, blk_mq_debugfs_hctx_attrs)) + return -ENOMEM; hctx_for_each_ctx(hctx, ctx, i) { if (blk_mq_debugfs_register_ctx(q, ctx, hctx_dir)) -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
