A mapping show as following: hctx cpus hctx0 0 1 hctx1 2 hctx2 3 hctx3 4 5
Signed-off-by: weiping zhang <[email protected]> --- block/blk-mq-debugfs.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index 9ebc294..a311d5a 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -175,6 +175,23 @@ static int queue_poll_stat_show(void *data, struct seq_file *m) return 0; } +static int queue_mapping_show(void *data, struct seq_file *m) +{ + struct request_queue *q = data; + struct blk_mq_hw_ctx *hctx; + struct blk_mq_ctx *ctx; + int i, j; + + seq_puts(m, "hctx\t\tcpus\n"); + queue_for_each_hw_ctx(q, hctx, i) { + seq_printf(m, "hctx%u\t\t", hctx->queue_num); + hctx_for_each_ctx(hctx, ctx, j) + seq_printf(m, "%3u ", ctx->cpu); + seq_puts(m, "\n"); + } + return 0; +} + #define HCTX_STATE_NAME(name) [BLK_MQ_S_##name] = #name static const char *const hctx_state_name[] = { HCTX_STATE_NAME(STOPPED), @@ -754,6 +771,7 @@ static const struct blk_mq_debugfs_attr blk_mq_debugfs_queue_attrs[] = { {"requeue_list", 0400, .seq_ops = &queue_requeue_list_seq_ops}, {"state", 0600, queue_state_show, queue_state_write}, {"write_hints", 0600, queue_write_hint_show, queue_write_hint_store}, + {"mapping", 0400, queue_mapping_show}, {}, }; -- 2.9.4
