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crypto: cavium/nitrox - add support for per device request statistics.

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Add per device statistics like number of requests posted,
dropped and completed etc.

Signed-off-by: Srikanth Jampala <Jampala.Srikanth@cavium.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Srikanth Jampala 2018-09-21 17:08:01 +05:30 committed by Herbert Xu
parent 48e10548f8
commit fec165c947
3 changed files with 20 additions and 1 deletions
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7
drivers/crypto/cavium/nitrox/nitrox_dev.h
View file

@ -75,6 +75,12 @@ struct nitrox_hw {
u8 zip_cores;
};
struct nitrox_stats {
atomic64_t posted;
atomic64_t completed;
atomic64_t dropped;
};
#define MAX_MSIX_VECTOR_NAME 20
/**
* vectors for queues (64 AE, 64 SE and 64 ZIP) and
@ -176,6 +182,7 @@ struct nitrox_device {
struct nitrox_msix msix;
struct nitrox_bh bh;
struct nitrox_stats stats;
struct nitrox_hw hw;
#if IS_ENABLED(CONFIG_DEBUG_FS)
struct dentry *debugfs_dir;

5
drivers/crypto/cavium/nitrox/nitrox_main.c
View file

@ -542,6 +542,11 @@ static int nitrox_probe(struct pci_dev *pdev,
if (err)
goto pf_hw_fail;
/* clear the statistics */
atomic64_set(&ndev->stats.posted, 0);
atomic64_set(&ndev->stats.completed, 0);
atomic64_set(&ndev->stats.dropped, 0);
atomic_set(&ndev->state, __NDEV_READY);
/* barrier to sync with other cpus */
smp_mb__after_atomic();

9
drivers/crypto/cavium/nitrox/nitrox_reqmgr.c
View file

@ -460,6 +460,9 @@ static void post_se_instr(struct nitrox_softreq *sr,
cmdq->write_idx = incr_index(idx, 1, ndev->qlen);
spin_unlock_bh(&cmdq->cmdq_lock);
/* increment the posted command count */
atomic64_inc(&ndev->stats.posted);
}
static int post_backlog_cmds(struct nitrox_cmdq *cmdq)
@ -508,8 +511,11 @@ static int nitrox_enqueue_request(struct nitrox_softreq *sr)
post_backlog_cmds(cmdq);
if (unlikely(cmdq_full(cmdq, ndev->qlen))) {
if (!(sr->flags & CRYPTO_TFM_REQ_MAY_BACKLOG))
if (!(sr->flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
/* increment drop count */
atomic64_inc(&ndev->stats.dropped);
return -ENOSPC;
}
/* add to backlog list */
backlog_list_add(sr, cmdq);
return -EBUSY;
@ -694,6 +700,7 @@ static void process_response_list(struct nitrox_cmdq *cmdq)
READ_ONCE(sr->resp.orh));
}
atomic_dec(&cmdq->pending_count);
atomic64_inc(&ndev->stats.completed);
/* sync with other cpus */
smp_mb__after_atomic();
/* remove from response list */