Hello.
On 7/14/2015 3:22 PM, Denys Vlasenko wrote:
With CONFIG_IWLWIFI_DEVICE_TRACING=y, these functions are rather large,
too big for inlining.
With this .config: http://busybox.net/~vda/kernel_config,
after uninlining these functions have sizes and callsite counts
as follows:
iwl_read32 475 bytes, 51 callsites
iwl_write32 477 bytes, 90 callsites
iwl_write8 493 bytes, 3 callsites
Reduction in size is about 74,000 bytes:
text data bss dec hex filename
90758147 17226024 36659200 144643371 89f152b vmlinux0
90687995 17221928 36659200 144569123 89df323 vmlinux.after
Signed-off-by: Denys Vlasenko <dvlasenk@xxxxxxxxxx>
CC: Johannes Berg <johannes.berg@xxxxxxxxx>
CC: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Cc: "John W. Linville" <linville@xxxxxxxxxxxxx>
Cc: Intel Linux Wireless <ilw@xxxxxxxxxxxxxxx>
Cc: linux-wireless@xxxxxxxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx
CC: linux-kernel@xxxxxxxxxxxxxxx
---
drivers/net/wireless/iwlwifi/iwl-io.c | 7 +++++++
drivers/net/wireless/iwlwifi/iwl-io.h | 39 +++++++++++++++++++++--------------
2 files changed, 30 insertions(+), 16 deletions(-)
[...]
diff --git a/drivers/net/wireless/iwlwifi/iwl-io.h b/drivers/net/wireless/iwlwifi/iwl-io.h
index 705d12c..3c9d2a8 100644
--- a/drivers/net/wireless/iwlwifi/iwl-io.h
+++ b/drivers/net/wireless/iwlwifi/iwl-io.h
@@ -32,24 +32,31 @@
#include "iwl-devtrace.h"
#include "iwl-trans.h"
[...]
+#define IWL_READ_WRITE(static_inline) \
+static_inline void iwl_write8(struct iwl_trans *trans, u32 ofs, u8 val) \
+{ \
+ trace_iwlwifi_dev_iowrite8(trans->dev, ofs, val); \
+ iwl_trans_write8(trans, ofs, val); \
+} \
+static_inline void iwl_write32(struct iwl_trans *trans, u32 ofs, u32 val) \
+{ \
+ trace_iwlwifi_dev_iowrite32(trans->dev, ofs, val); \
+ iwl_trans_write32(trans, ofs, val); \
+} \
+static_inline u32 iwl_read32(struct iwl_trans *trans, u32 ofs) \
+{ \
+ u32 val = iwl_trans_read32(trans, ofs); \
+ trace_iwlwifi_dev_ioread32(trans->dev, ofs, val); \
+ return val; \
}
[...]
+#if !defined(CONFIG_IWLWIFI_DEVICE_TRACING)
+IWL_READ_WRITE(static inline)
Not static_inline?
+#else
+void iwl_write8(struct iwl_trans *trans, u32 ofs, u8 val);
+void iwl_write32(struct iwl_trans *trans, u32 ofs, u32 val);
+u32 iwl_read32(struct iwl_trans *trans, u32 ofs);
+#endif
MBR, Sergei
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