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iwlwifi: mvm: add a non-trigger window to fw dbg triggers

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Allow the user to configure a non-trigger session - a window
between triggers in which the driver won't collect fw debug data.
This can be useful when the frequent collection of fw data
has an impact on the performance, such as debugging
tx flows.

Signed-off-by: Golan Ben-Ami <golan.ben.ami@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Golan Ben-Ami 2015-11-25 11:44:57 +02:00 committed by Emmanuel Grumbach
parent 976f15a8ef
commit a977a1507c
3 changed files with 31 additions and 1 deletions
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5
drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h
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@ -557,6 +557,8 @@ enum iwl_fw_dbg_trigger_vif_type {
* @start_conf_id: if mode is %IWL_FW_DBG_TRIGGER_START, this defines what * @start_conf_id: if mode is %IWL_FW_DBG_TRIGGER_START, this defines what
* configuration should be applied when the triggers kicks in. * configuration should be applied when the triggers kicks in.
* @occurrences: number of occurrences. 0 means the trigger will never fire. * @occurrences: number of occurrences. 0 means the trigger will never fire.
* @trig_dis_ms: the time, in milliseconds, after an occurrence of this
* trigger in which another occurrence should be ignored.
*/ */
struct iwl_fw_dbg_trigger_tlv { struct iwl_fw_dbg_trigger_tlv {
__le32 id; __le32 id;
@ -566,7 +568,8 @@ struct iwl_fw_dbg_trigger_tlv {
u8 mode; u8 mode;
u8 start_conf_id; u8 start_conf_id;
__le16 occurrences; __le16 occurrences;
__le32 reserved[2]; __le16 trig_dis_ms;
__le16 reserved[3];
u8 data[0]; u8 data[0];
} __packed; } __packed;

24
drivers/net/wireless/intel/iwlwifi/mvm/fw-dbg.h
View File

@ -117,6 +117,24 @@ iwl_fw_dbg_trigger_stop_conf_match(struct iwl_mvm *mvm,
(BIT(mvm->fw_dbg_conf) & le32_to_cpu(trig->stop_conf_ids)))); (BIT(mvm->fw_dbg_conf) & le32_to_cpu(trig->stop_conf_ids))));
} }
static inline bool
iwl_fw_dbg_no_trig_window(struct iwl_mvm *mvm,
struct iwl_fw_dbg_trigger_tlv *trig)
{
unsigned long wind_jiff =
msecs_to_jiffies(le16_to_cpu(trig->trig_dis_ms));
u32 id = le32_to_cpu(trig->id);
/* If this is the first event checked, jump to update start ts */
if (mvm->fw_dbg_non_collect_ts_start[id] &&
(time_after(mvm->fw_dbg_non_collect_ts_start[id] + wind_jiff,
jiffies)))
return true;
mvm->fw_dbg_non_collect_ts_start[id] = jiffies;
return false;
}
static inline bool static inline bool
iwl_fw_dbg_trigger_check_stop(struct iwl_mvm *mvm, iwl_fw_dbg_trigger_check_stop(struct iwl_mvm *mvm,
struct ieee80211_vif *vif, struct ieee80211_vif *vif,
@ -125,6 +143,12 @@ iwl_fw_dbg_trigger_check_stop(struct iwl_mvm *mvm,
if (vif && !iwl_fw_dbg_trigger_vif_match(trig, vif)) if (vif && !iwl_fw_dbg_trigger_vif_match(trig, vif))
return false; return false;
if (iwl_fw_dbg_no_trig_window(mvm, trig)) {
IWL_WARN(mvm, "Trigger %d occurred while no-collect window.\n",
trig->id);
return false;
}
return iwl_fw_dbg_trigger_stop_conf_match(mvm, trig); return iwl_fw_dbg_trigger_stop_conf_match(mvm, trig);
} }

3
drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
View File

@ -658,6 +658,9 @@ struct iwl_mvm {
/* max number of simultaneous scans the FW supports */ /* max number of simultaneous scans the FW supports */
unsigned int max_scans; unsigned int max_scans;
/* ts of the beginning of a non-collect fw dbg data period */
unsigned long fw_dbg_non_collect_ts_start[FW_DBG_TRIGGER_MAX - 1];
/* UMAC scan tracking */ /* UMAC scan tracking */
u32 scan_uid_status[IWL_MVM_MAX_UMAC_SCANS]; u32 scan_uid_status[IWL_MVM_MAX_UMAC_SCANS];