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authorHans Holmberg <hans.holmberg@cnexlabs.com>2018-10-09 13:11:55 +0200
committerJens Axboe <axboe@kernel.dk>2018-10-09 08:25:07 -0600
commit4209c31c0c5cc0787e63b977dacc30e37378eb28 (patch)
tree895248ce79a9d2f4856eb3a56186306777e4d8f4 /drivers/lightnvm
parent1b0dd0bf3dc8e9fb974d61139c182be15e43caf9 (diff)
downloadblackbird-obmc-linux-4209c31c0c5cc0787e63b977dacc30e37378eb28.tar.gz
blackbird-obmc-linux-4209c31c0c5cc0787e63b977dacc30e37378eb28.zip
lightnvm: pblk: add tracing for chunk resets
Trace state of chunk resets. 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')
-rw-r--r--drivers/lightnvm/pblk-core.c12
-rw-r--r--drivers/lightnvm/pblk-trace.h31
-rw-r--r--drivers/lightnvm/pblk.h6
3 files changed, 49 insertions, 0 deletions
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index c482ef7dd4b5..84f3b4912b92 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -90,9 +90,15 @@ static void __pblk_end_io_erase(struct pblk *pblk, struct nvm_rq *rqd)
atomic_dec(&line->left_seblks);
if (rqd->error) {
+ trace_pblk_chunk_reset(pblk_disk_name(pblk),
+ &rqd->ppa_addr, PBLK_CHUNK_RESET_FAILED);
+
chunk->state = NVM_CHK_ST_OFFLINE;
pblk_mark_bb(pblk, line, rqd->ppa_addr);
} else {
+ trace_pblk_chunk_reset(pblk_disk_name(pblk),
+ &rqd->ppa_addr, PBLK_CHUNK_RESET_DONE);
+
chunk->state = NVM_CHK_ST_FREE;
}
@@ -923,6 +929,9 @@ static int pblk_blk_erase_sync(struct pblk *pblk, struct ppa_addr ppa)
struct nvm_rq rqd = {NULL};
int ret;
+ trace_pblk_chunk_reset(pblk_disk_name(pblk), &ppa,
+ PBLK_CHUNK_RESET_START);
+
pblk_setup_e_rq(pblk, &rqd, ppa);
/* The write thread schedules erases so that it minimizes disturbances
@@ -1736,6 +1745,9 @@ int pblk_blk_erase_async(struct pblk *pblk, struct ppa_addr ppa)
rqd->end_io = pblk_end_io_erase;
rqd->private = pblk;
+ trace_pblk_chunk_reset(pblk_disk_name(pblk),
+ &ppa, PBLK_CHUNK_RESET_START);
+
/* The write thread schedules erases so that it minimizes disturbances
* with writes. Thus, there is no need to take the LUN semaphore.
*/
diff --git a/drivers/lightnvm/pblk-trace.h b/drivers/lightnvm/pblk-trace.h
index c171d0450c07..679e5c458ca6 100644
--- a/drivers/lightnvm/pblk-trace.h
+++ b/drivers/lightnvm/pblk-trace.h
@@ -31,6 +31,37 @@ struct ppa_addr;
{ PBLK_STATE_RECOVERING, "RECOVERING", }, \
{ PBLK_STATE_STOPPED, "STOPPED" })
+#define show_chunk_erase_state(state) __print_symbolic(state, \
+ { PBLK_CHUNK_RESET_START, "START", }, \
+ { PBLK_CHUNK_RESET_DONE, "OK", }, \
+ { PBLK_CHUNK_RESET_FAILED, "FAILED" })
+
+
+TRACE_EVENT(pblk_chunk_reset,
+
+ 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_erase_state((int)__entry->state))
+
+);
TRACE_EVENT(pblk_chunk_state,
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index b2746099ca1d..7f4e46dfb0d7 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -79,6 +79,12 @@ enum {
PBLK_BLK_ST_CLOSED = 0x2,
};
+enum {
+ PBLK_CHUNK_RESET_START,
+ PBLK_CHUNK_RESET_DONE,
+ PBLK_CHUNK_RESET_FAILED,
+};
+
struct pblk_sec_meta {
u64 reserved;
__le64 lba;
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