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Subject[PATCH] dmaengine: ti: k3-psil: optimize struct psil_endpoint_config for size
Date
Optimize struct psil_endpoint_config for size by
- reordering fields
- grouping bitfields
- change mapped_channel_id type to s16 (32K channel is enough)
- default_flow_id type to s16 as it's assigned to -1

before:
text data bss dec hex filename
12654100 5211472 666904 18532476 11ac87c vmlinux

after:
12654100 5208528 666904 18529532 11abcfc vmlinux

diff: 2944 bytes

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
include/linux/dma/k3-psil.h | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/include/linux/dma/k3-psil.h b/include/linux/dma/k3-psil.h
index 36e22c5a0f29..5f106d852f1c 100644
--- a/include/linux/dma/k3-psil.h
+++ b/include/linux/dma/k3-psil.h
@@ -42,14 +42,14 @@ enum psil_endpoint_type {
/**
* struct psil_endpoint_config - PSI-L Endpoint configuration
* @ep_type: PSI-L endpoint type
+ * @channel_tpl: Desired throughput level for the channel
* @pkt_mode: If set, the channel must be in Packet mode, otherwise in
* TR mode
* @notdpkt: TDCM must be suppressed on the TX channel
* @needs_epib: Endpoint needs EPIB
- * @psd_size: If set, PSdata is used by the endpoint
- * @channel_tpl: Desired throughput level for the channel
* @pdma_acc32: ACC32 must be enabled on the PDMA side
* @pdma_burst: BURST must be enabled on the PDMA side
+ * @psd_size: If set, PSdata is used by the endpoint
* @mapped_channel_id: PKTDMA thread to channel mapping for mapped channels.
* The thread must be serviced by the specified channel if
* mapped_channel_id is >= 0 in case of PKTDMA
@@ -62,23 +62,22 @@ enum psil_endpoint_type {
*/
struct psil_endpoint_config {
enum psil_endpoint_type ep_type;
+ enum udma_tp_level channel_tpl;

unsigned pkt_mode:1;
unsigned notdpkt:1;
unsigned needs_epib:1;
- u32 psd_size;
- enum udma_tp_level channel_tpl;
-
/* PDMA properties, valid for PSIL_EP_PDMA_* */
unsigned pdma_acc32:1;
unsigned pdma_burst:1;

+ u32 psd_size;
/* PKDMA mapped channel */
- int mapped_channel_id;
+ s16 mapped_channel_id;
/* PKTDMA tflow and rflow ranges for mapped channel */
u16 flow_start;
u16 flow_num;
- u16 default_flow_id;
+ s16 default_flow_id;
};

int psil_set_new_ep_config(struct device *dev, const char *name,
--
2.17.1
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