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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>
This commit is contained in:
Hans Holmberg 2018-10-09 13:11:55 +02:00 committed by Jens Axboe
parent 1b0dd0bf3d
commit 4209c31c0c
3 changed files with 49 additions and 0 deletions
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12
drivers/lightnvm/pblk-core.c
View File

@ -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.
*/

31
drivers/lightnvm/pblk-trace.h
View File

@ -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,

6
drivers/lightnvm/pblk.h
View File

@ -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;