Subject: [PATCH v8 bpf-next 4/9] net/wireless/iwlwifi: fix iwlwifi_dev_ucode_error tracepoint

From: Alexei Starovoitov <[email-masked]>
Date: Wed, 28 Mar 2018 12:05:35 -0700

fix iwlwifi_dev_ucode_error tracepoint to pass pointer to a table
instead of all 17 arguments by value.
dvm/main.c and mvm/utils.c have 'struct iwl_error_event_table'
defined with very similar yet subtly different fields and offsets.
tracepoint is still common and using definition of 'struct iwl_error_event_table'
from dvm/commands.h while copying fields.
Long term this tracepoint probably should be split into two.

Signed-off-by: Alexei Starovoitov <[email-masked]>
---
 drivers/net/wireless/intel/iwlwifi/dvm/main.c      |  7 +---
 .../wireless/intel/iwlwifi/iwl-devtrace-iwlwifi.h  | 39 ++++++++++------------
 drivers/net/wireless/intel/iwlwifi/iwl-devtrace.c  |  1 +
 drivers/net/wireless/intel/iwlwifi/mvm/utils.c     |  7 +---
 4 files changed, 21 insertions(+), 33 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/dvm/main.c b/drivers/net/wireless/intel/iwlwifi/dvm/main.c
index d11d72615de2..e68254e12764 100644
--- a/drivers/net/wireless/intel/iwlwifi/dvm/main.c
+++ b/drivers/net/wireless/intel/iwlwifi/dvm/main.c
@@ -1651,12 +1651,7 @@ static void iwl_dump_nic_error_log(struct iwl_priv *priv)
 			priv->status, table.valid);
 	}
 
-	trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
-				      table.data1, table.data2, table.line,
-				      table.blink2, table.ilink1, table.ilink2,
-				      table.bcon_time, table.gp1, table.gp2,
-				      table.gp3, table.ucode_ver, table.hw_ver,
-				      0, table.brd_ver);
+	trace_iwlwifi_dev_ucode_error(trans->dev, &table, 0, table.brd_ver);
 	IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
 		desc_lookup(table.error_id));
 	IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace-iwlwifi.h b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace-iwlwifi.h
index 9518a82f44c2..27e3e4e96aa2 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace-iwlwifi.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace-iwlwifi.h
@@ -126,14 +126,11 @@ TRACE_EVENT(iwlwifi_dev_tx,
 		  __entry->framelen, __entry->skbaddr)
 );
 
+struct iwl_error_event_table;
 TRACE_EVENT(iwlwifi_dev_ucode_error,
-	TP_PROTO(const struct device *dev, u32 desc, u32 tsf_low,
-		 u32 data1, u32 data2, u32 line, u32 blink2, u32 ilink1,
-		 u32 ilink2, u32 bcon_time, u32 gp1, u32 gp2, u32 rev_type,
-		 u32 major, u32 minor, u32 hw_ver, u32 brd_ver),
-	TP_ARGS(dev, desc, tsf_low, data1, data2, line,
-		 blink2, ilink1, ilink2, bcon_time, gp1, gp2,
-		 rev_type, major, minor, hw_ver, brd_ver),
+	TP_PROTO(const struct device *dev, const struct iwl_error_event_table *table,
+		 u32 hw_ver, u32 brd_ver),
+	TP_ARGS(dev, table, hw_ver, brd_ver),
 	TP_STRUCT__entry(
 		DEV_ENTRY
 		__field(u32, desc)
@@ -155,20 +152,20 @@ TRACE_EVENT(iwlwifi_dev_ucode_error,
 	),
 	TP_fast_assign(
 		DEV_ASSIGN;
-		__entry->desc = desc;
-		__entry->tsf_low = tsf_low;
-		__entry->data1 = data1;
-		__entry->data2 = data2;
-		__entry->line = line;
-		__entry->blink2 = blink2;
-		__entry->ilink1 = ilink1;
-		__entry->ilink2 = ilink2;
-		__entry->bcon_time = bcon_time;
-		__entry->gp1 = gp1;
-		__entry->gp2 = gp2;
-		__entry->rev_type = rev_type;
-		__entry->major = major;
-		__entry->minor = minor;
+		__entry->desc = table->error_id;
+		__entry->tsf_low = table->tsf_low;
+		__entry->data1 = table->data1;
+		__entry->data2 = table->data2;
+		__entry->line = table->line;
+		__entry->blink2 = table->blink2;
+		__entry->ilink1 = table->ilink1;
+		__entry->ilink2 = table->ilink2;
+		__entry->bcon_time = table->bcon_time;
+		__entry->gp1 = table->gp1;
+		__entry->gp2 = table->gp2;
+		__entry->rev_type = table->gp3;
+		__entry->major = table->ucode_ver;
+		__entry->minor = table->hw_ver;
 		__entry->hw_ver = hw_ver;
 		__entry->brd_ver = brd_ver;
 	),
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.c b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.c
index 50510fb6ab8c..6aa719865a58 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-devtrace.c
@@ -30,6 +30,7 @@
 #ifndef __CHECKER__
 #include "iwl-trans.h"
 
+#include "dvm/commands.h"
 #define CREATE_TRACE_POINTS
 #include "iwl-devtrace.h"
 
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
index d65e1db7c097..5442ead876eb 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
@@ -549,12 +549,7 @@ static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u32 base)
 
 	IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
 
-	trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
-				      table.data1, table.data2, table.data3,
-				      table.blink2, table.ilink1,
-				      table.ilink2, table.bcon_time, table.gp1,
-				      table.gp2, table.fw_rev_type, table.major,
-				      table.minor, table.hw_ver, table.brd_ver);
+	trace_iwlwifi_dev_ucode_error(trans->dev, &table, table.hw_ver, table.brd_ver);
 	IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
 		desc_lookup(table.error_id));
 	IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0);
-- 
2.9.5