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lib: Pack struct sbi_fifo

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This patch reduces memory consumed by struct sbi_fifo by droping
redundant "head" member and using u16 in-place of "unsigned long".

Signed-off-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Anup Patel
2019-04-03 12:27:27 +05:30
committed by Atish Patra
parent 9dc95021db
commit 3fbe233a15
2 changed files with 15 additions and 16 deletions
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13
include/sbi/sbi_fifo.h
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@@ -15,21 +15,18 @@
#include <sbi/sbi_types.h>
struct sbi_fifo {
/* Static members of struct */
void *queue;
unsigned long entry_size;
unsigned long num_entries;
/* Dynamic members of struct protected by lock */
spinlock_t qlock;
unsigned long avail;
unsigned long head;
unsigned long tail;
u16 entry_size;
u16 num_entries;
u16 avail;
u16 tail;
};
int sbi_fifo_dequeue(struct sbi_fifo *fifo, void *data);
int sbi_fifo_enqueue(struct sbi_fifo *fifo, void *data);
void sbi_fifo_init(struct sbi_fifo *fifo, void *queue_mem,
unsigned long entries, unsigned long entry_size);
u16 entries, u16 entry_size);
bool sbi_fifo_is_empty(struct sbi_fifo *fifo);
bool sbi_fifo_is_full(struct sbi_fifo *fifo);