[RFC PATCH 27/39] blktrace: add a new formatting routine
STALE2049d
From: Chaitanya Kulkarni <hidden>
Date: 2021-02-25 07:09:42
Also in:
linux-fsdevel
Subsystem:
block layer, the rest, tracing · Maintainers:
Jens Axboe, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
Signed-off-by: Chaitanya Kulkarni <redacted> --- kernel/trace/blktrace.c | 57 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+)
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 84bee8677162..2241c7304749 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c@@ -1722,6 +1722,62 @@ static void fill_rwbs(char *rwbs, const struct blk_io_trace *t) rwbs[i] = '\0'; } +static void fill_rwbs_ext(char *rwbs, const struct blk_io_trace_ext *t) +{ + int i = 0; + int tc = t->action >> BLK_TC_SHIFT_EXT; + + if ((t->action & ~__BLK_TN_CGROUP) == BLK_TN_MESSAGE_EXT) { + rwbs[i++] = 'N'; + goto out; + } + + if (tc & BLK_TC_FLUSH) + rwbs[i++] = 'F'; + + if (tc & BLK_TC_DISCARD) + rwbs[i++] = 'D'; + else if ((tc & BLK_TC_WRITE_ZEROES)) { + rwbs[i++] = 'W'; + rwbs[i++] = 'Z'; + } else if ((tc & BLK_TC_ZONE_RESET)) { + rwbs[i++] = 'Z'; + rwbs[i++] = 'R'; + } else if ((tc & BLK_TC_ZONE_RESET_ALL)) { + rwbs[i++] = 'Z'; + rwbs[i++] = 'R'; + rwbs[i++] = 'A'; + } else if ((tc & BLK_TC_ZONE_APPEND)) { + rwbs[i++] = 'Z'; + rwbs[i++] = 'A'; + } else if ((tc & BLK_TC_ZONE_OPEN)) { + rwbs[i++] = 'Z'; + rwbs[i++] = 'O'; + } else if ((tc & BLK_TC_ZONE_CLOSE)) { + rwbs[i++] = 'Z'; + rwbs[i++] = 'C'; + } else if ((tc & BLK_TC_ZONE_FINISH)) { + rwbs[i++] = 'Z'; + rwbs[i++] = 'F'; + } else if (tc & BLK_TC_WRITE) + rwbs[i++] = 'W'; + else if (t->bytes) + rwbs[i++] = 'R'; + else + rwbs[i++] = 'N'; + + if (tc & BLK_TC_FUA) + rwbs[i++] = 'F'; + if (tc & BLK_TC_AHEAD) + rwbs[i++] = 'A'; + if (tc & BLK_TC_SYNC) + rwbs[i++] = 'S'; + if (tc & BLK_TC_META) + rwbs[i++] = 'M'; +out: + rwbs[i] = '\0'; +} + static inline const struct blk_io_trace *te_blk_io_trace(const struct trace_entry *ent) {
@@ -2514,5 +2570,6 @@ void blk_fill_rwbs(char *rwbs, unsigned int op) } EXPORT_SYMBOL_GPL(blk_fill_rwbs); + #endif /* CONFIG_EVENT_TRACING */
--
2.22.1