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crypto: iaa - Add IAA Compression Accelerator stats

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Add support for optional debugfs statistics support for the IAA
Compression Accelerator.  This is enabled by the kernel config item:

  CRYPTO_DEV_IAA_CRYPTO_STATS

When enabled, the IAA crypto driver will generate statistics which can
be accessed at /sys/kernel/debug/iaa-crypto/.

See Documentation/driver-api/crypto/iax/iax-crypto.rst for details.

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tom Zanussi
2023-12-05 15:25:29 -06:00
committed by Herbert Xu
parent 09646c98d0
commit 93382a9163
6 changed files with 427 additions and 2 deletions
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39
drivers/crypto/intel/iaa/iaa_crypto_main.c
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@@ -14,6 +14,7 @@
#include "idxd.h"
#include "iaa_crypto.h"
#include "iaa_crypto_stats.h"
#ifdef pr_fmt
#undef pr_fmt
@@ -85,8 +86,8 @@ static void wq_table_clear_entry(int cpu)
memset(entry->wqs, 0, entry->max_wqs * sizeof(struct idxd_wq *));
}
static LIST_HEAD(iaa_devices);
static DEFINE_MUTEX(iaa_devices_lock);
LIST_HEAD(iaa_devices);
DEFINE_MUTEX(iaa_devices_lock);
/* If enabled, IAA hw crypto algos are registered, unavailable otherwise */
static bool iaa_crypto_enabled;
@@ -1052,6 +1053,7 @@ static inline int check_completion(struct device *dev,
ret = -ETIMEDOUT;
dev_dbg(dev, "%s timed out, size=0x%x\n",
op_str, comp->output_size);
update_completion_timeout_errs();
goto out;
}
@@ -1061,6 +1063,7 @@ static inline int check_completion(struct device *dev,
dev_dbg(dev, "compressed > uncompressed size,"
" not compressing, size=0x%x\n",
comp->output_size);
update_completion_comp_buf_overflow_errs();
goto out;
}
@@ -1073,6 +1076,7 @@ static inline int check_completion(struct device *dev,
dev_dbg(dev, "iaa %s status=0x%x, error=0x%x, size=0x%x\n",
op_str, comp->status, comp->error_code, comp->output_size);
print_hex_dump(KERN_INFO, "cmp-rec: ", DUMP_PREFIX_OFFSET, 8, 1, comp, 64, 0);
update_completion_einval_errs();
goto out;
}
@@ -1094,6 +1098,8 @@ static int deflate_generic_decompress(struct acomp_req *req)
kunmap_local(src);
kunmap_local(dst);
update_total_sw_decomp_calls();
return ret;
}
@@ -1161,6 +1167,15 @@ static void iaa_desc_complete(struct idxd_desc *idxd_desc,
ctx->req->dlen = idxd_desc->iax_completion->output_size;
}
/* Update stats */
if (ctx->compress) {
update_total_comp_bytes_out(ctx->req->dlen);
update_wq_comp_bytes(iaa_wq->wq, ctx->req->dlen);
} else {
update_total_decomp_bytes_in(ctx->req->dlen);
update_wq_decomp_bytes(iaa_wq->wq, ctx->req->dlen);
}
if (ctx->compress && compression_ctx->verify_compress) {
dma_addr_t src_addr, dst_addr;
u32 compression_crc;
@@ -1280,6 +1295,10 @@ static int iaa_compress(struct crypto_tfm *tfm, struct acomp_req *req,
goto err;
}
/* Update stats */
update_total_comp_calls();
update_wq_comp_calls(wq);
if (ctx->async_mode && !disable_async) {
ret = -EINPROGRESS;
dev_dbg(dev, "%s: returning -EINPROGRESS\n", __func__);
@@ -1294,6 +1313,10 @@ static int iaa_compress(struct crypto_tfm *tfm, struct acomp_req *req,
*dlen = idxd_desc->iax_completion->output_size;
/* Update stats */
update_total_comp_bytes_out(*dlen);
update_wq_comp_bytes(wq, *dlen);
*compression_crc = idxd_desc->iax_completion->crc;
if (!ctx->async_mode)
@@ -1510,6 +1533,10 @@ static int iaa_decompress(struct crypto_tfm *tfm, struct acomp_req *req,
goto err;
}
/* Update stats */
update_total_decomp_calls();
update_wq_decomp_calls(wq);
if (ctx->async_mode && !disable_async) {
ret = -EINPROGRESS;
dev_dbg(dev, "%s: returning -EINPROGRESS\n", __func__);
@@ -1540,6 +1567,10 @@ static int iaa_decompress(struct crypto_tfm *tfm, struct acomp_req *req,
if (!ctx->async_mode)
idxd_free_desc(wq, idxd_desc);
/* Update stats */
update_total_decomp_bytes_in(slen);
update_wq_decomp_bytes(wq, slen);
out:
return ret;
err:
@@ -2104,6 +2135,9 @@ static int __init iaa_crypto_init_module(void)
goto err_sync_attr_create;
}
if (iaa_crypto_debugfs_init())
pr_warn("debugfs init failed, stats not available\n");
pr_debug("initialized\n");
out:
return ret;
@@ -2126,6 +2160,7 @@ static void __exit iaa_crypto_cleanup_module(void)
if (iaa_unregister_compression_device())
pr_debug("IAA compression device unregister failed\n");
iaa_crypto_debugfs_cleanup();
driver_remove_file(&iaa_crypto_driver.drv,
&driver_attr_sync_mode);
driver_remove_file(&iaa_crypto_driver.drv,