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blktrace: log dropped REQ_OP_ZONE_XXX events ver1 #554

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blktrace: log dropped REQ_OP_ZONE_XXX events ver1 #554

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6 changes: 6 additions & 0 deletions kernel/trace/blktrace.c
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Original file line number Diff line number Diff line change
Expand Up @@ -741,6 +741,12 @@ static void blk_trace_setup_finalize(struct request_queue *q,
* to underscores for this to work as expected
*/
strreplace(buts->name, '/', '_');
if (version == 1 && IS_ENABLED(CONFIG_BLK_DEV_ZONED)) {
pr_info("%s: blktrace events for zone operations will be dropped\n",
name);
pr_info("use blktrace tools version >= 2 to track zone operations\n");

}

bt->version = version;
bt->act_mask = buts->act_mask;
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