diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2012-09-05 00:33:53 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2012-09-05 16:17:57 +0200 |
| commit | 45eab7ccacb2c2e63f7645fa92a7f742898044b4 (patch) | |
| tree | fa68a9b60a27cb6244c5093c1be4db3620c49512 /drivers/net/wireless/iwlwifi/pcie | |
| parent | 12bf6f45d17038589e0eaa8adeb7ee8169c0e4de (diff) | |
iwlwifi: reduce overhead if tracing disabled
Tracing commands builds an array of trace data
items even when the tracepoint is disabled.
Instead, loop in the tracepoint assignment.
This reduces overhead if tracing is compiled
into the driver but not enabled and slightly
reduces overall driver size as well:
text data bss dec hex filename
114514 6509 48 121071 1d8ef before/iwlwifi.ko
114189 6509 48 120746 1d7aa after/iwlwifi.ko
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Max Stepanov <Max.Stepanov@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/pcie')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/tx.c | 25 |
1 files changed, 2 insertions, 23 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index 392d2bc5e35..105e3af3c62 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -522,11 +522,6 @@ static int iwl_enqueue_hcmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd) bool had_nocopy = false; int i; u32 cmd_pos; -#ifdef CONFIG_IWLWIFI_DEVICE_TRACING - const void *trace_bufs[IWL_MAX_CMD_TFDS + 1] = {}; - int trace_lens[IWL_MAX_CMD_TFDS + 1] = {}; - int trace_idx; -#endif copy_size = sizeof(out_cmd->hdr); cmd_size = sizeof(out_cmd->hdr); @@ -628,11 +623,6 @@ static int iwl_enqueue_hcmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd) dma_unmap_len_set(out_meta, len, copy_size); iwlagn_txq_attach_buf_to_tfd(trans, txq, phys_addr, copy_size, 1); -#ifdef CONFIG_IWLWIFI_DEVICE_TRACING - trace_bufs[0] = &out_cmd->hdr; - trace_lens[0] = copy_size; - trace_idx = 1; -#endif for (i = 0; i < IWL_MAX_CMD_TFDS; i++) { if (!cmd->len[i]) @@ -651,25 +641,14 @@ static int iwl_enqueue_hcmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd) iwlagn_txq_attach_buf_to_tfd(trans, txq, phys_addr, cmd->len[i], 0); -#ifdef CONFIG_IWLWIFI_DEVICE_TRACING - trace_bufs[trace_idx] = cmd->data[i]; - trace_lens[trace_idx] = cmd->len[i]; - trace_idx++; -#endif } out_meta->flags = cmd->flags; txq->need_update = 1; - /* check that tracing gets all possible blocks */ - BUILD_BUG_ON(IWL_MAX_CMD_TFDS + 1 != 3); -#ifdef CONFIG_IWLWIFI_DEVICE_TRACING - trace_iwlwifi_dev_hcmd(trans->dev, cmd->flags, - trace_bufs[0], trace_lens[0], - trace_bufs[1], trace_lens[1], - trace_bufs[2], trace_lens[2]); -#endif + trace_iwlwifi_dev_hcmd(trans->dev, cmd, cmd_size, + &out_cmd->hdr, copy_size); /* start timer if queue currently empty */ if (q->read_ptr == q->write_ptr && trans_pcie->wd_timeout) |