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authorHans Holmberg <hans.holmberg@cnexlabs.com>2018-10-09 14:11:52 +0300
committerJens Axboe <axboe@kernel.dk>2018-10-09 17:25:07 +0300
commit4c44abf43d00d81f5c648f376c436a9405980efc (patch)
tree667edc9d1354b56dd4b71755c298f5911fbac871 /drivers/lightnvm/pblk-trace.h
parent43241cfe470850a590913a86e590fd4ad9939d59 (diff)
downloadlinux-4c44abf43d00d81f5c648f376c436a9405980efc.tar.xz
lightnvm: pblk: add trace events for chunk states
Introduce trace points for tracking chunk states in pblk - this is useful for inspection of the entire state of the drive, and real handy for both fw and pblk debugging. Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com> Signed-off-by: Matias Bjørling <mb@lightnvm.io> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/lightnvm/pblk-trace.h')
-rw-r--r--drivers/lightnvm/pblk-trace.h53
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/lightnvm/pblk-trace.h b/drivers/lightnvm/pblk-trace.h
new file mode 100644
index 000000000000..d985b729428f
--- /dev/null
+++ b/drivers/lightnvm/pblk-trace.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM pblk
+
+#if !defined(_TRACE_PBLK_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_PBLK_H
+
+#include <linux/tracepoint.h>
+
+struct ppa_addr;
+
+#define show_chunk_flags(state) __print_flags(state, "", \
+ { NVM_CHK_ST_FREE, "FREE", }, \
+ { NVM_CHK_ST_CLOSED, "CLOSED", }, \
+ { NVM_CHK_ST_OPEN, "OPEN", }, \
+ { NVM_CHK_ST_OFFLINE, "OFFLINE", })
+
+TRACE_EVENT(pblk_chunk_state,
+
+ TP_PROTO(const char *name, struct ppa_addr *ppa, int state),
+
+ TP_ARGS(name, ppa, state),
+
+ TP_STRUCT__entry(
+ __string(name, name)
+ __field(u64, ppa)
+ __field(int, state);
+ ),
+
+ TP_fast_assign(
+ __assign_str(name, name);
+ __entry->ppa = ppa->ppa;
+ __entry->state = state;
+ ),
+
+ TP_printk("dev=%s grp=%llu pu=%llu chk=%llu state=%s", __get_str(name),
+ (u64)(((struct ppa_addr *)(&__entry->ppa))->m.grp),
+ (u64)(((struct ppa_addr *)(&__entry->ppa))->m.pu),
+ (u64)(((struct ppa_addr *)(&__entry->ppa))->m.chk),
+ show_chunk_flags((int)__entry->state))
+
+);
+
+
+#endif /* !defined(_TRACE_PBLK_H) || defined(TRACE_HEADER_MULTI_READ) */
+
+/* This part must be outside protection */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH ../../../drivers/lightnvm
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE pblk-trace
+#include <trace/define_trace.h>