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mm/iob: Remove initialized static variable inside iob_initialize

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since it's impossible to call iob_initialize twice

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
This commit is contained in:
Xiang Xiao
2022-03-12 04:04:08 +08:00
committed by Gustavo Henrique Nihei
parent b0786606fc
commit d9a442a859
1 changed files with 26 additions and 40 deletions
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mm/iob/iob_initialize.c
+26 -40
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@@ -73,12 +73,19 @@ FAR struct iob_qentry_s *g_iob_qcommitted;
/* Counting semaphores that tracks the number of free IOBs/qentries */ /* Counting semaphores that tracks the number of free IOBs/qentries */
sem_t g_iob_sem; /* Counts free I/O buffers */ sem_t g_iob_sem = SEM_INITIALIZER(CONFIG_IOB_NBUFFERS);
#if CONFIG_IOB_THROTTLE > 0 #if CONFIG_IOB_THROTTLE > 0
sem_t g_throttle_sem; /* Counts available I/O buffers when throttled */ /* Counts available I/O buffers when throttled */
sem_t g_throttle_sem = SEM_INITIALIZER(CONFIG_IOB_NBUFFERS -
CONFIG_IOB_THROTTLE);
#endif #endif
#if CONFIG_IOB_NCHAINS > 0 #if CONFIG_IOB_NCHAINS > 0
sem_t g_qentry_sem; /* Counts free I/O buffer queue containers */ /* Counts free I/O buffer queue containers */
sem_t g_qentry_sem = SEM_INITIALIZER(CONFIG_IOB_NCHAINS);
#endif #endif
/**************************************************************************** /****************************************************************************
@@ -95,54 +102,33 @@ sem_t g_qentry_sem; /* Counts free I/O buffer queue containers */
void iob_initialize(void) void iob_initialize(void)
{ {
static bool initialized = false;
int i; int i;
/* Perform one-time initialization */ /* Add each I/O buffer to the free list */
if (!initialized) for (i = 0; i < CONFIG_IOB_NBUFFERS; i++)
{ {
/* Add each I/O buffer to the free list */ FAR struct iob_s *iob = &g_iob_pool[i];
for (i = 0; i < CONFIG_IOB_NBUFFERS; i++) /* Add the pre-allocate I/O buffer to the head of the free list */
{
FAR struct iob_s *iob = &g_iob_pool[i];
/* Add the pre-allocate I/O buffer to the head of the free list */ iob->io_flink = g_iob_freelist;
g_iob_freelist = iob;
iob->io_flink = g_iob_freelist; }
g_iob_freelist = iob;
}
g_iob_committed = NULL;
nxsem_init(&g_iob_sem, 0, CONFIG_IOB_NBUFFERS);
#if CONFIG_IOB_THROTTLE > 0
nxsem_init(&g_throttle_sem,
0,
CONFIG_IOB_NBUFFERS - CONFIG_IOB_THROTTLE);
#endif
#if CONFIG_IOB_NCHAINS > 0 #if CONFIG_IOB_NCHAINS > 0
/* Add each I/O buffer chain queue container to the free list */ /* Add each I/O buffer chain queue container to the free list */
for (i = 0; i < CONFIG_IOB_NCHAINS; i++) for (i = 0; i < CONFIG_IOB_NCHAINS; i++)
{ {
FAR struct iob_qentry_s *iobq = &g_iob_qpool[i]; FAR struct iob_qentry_s *iobq = &g_iob_qpool[i];
/* Add the pre-allocate buffer container to the head of the free /* Add the pre-allocate buffer container to the head of the free
* list * list
*/ */
iobq->qe_flink = g_iob_freeqlist; iobq->qe_flink = g_iob_freeqlist;
g_iob_freeqlist = iobq; g_iob_freeqlist = iobq;
}
g_iob_qcommitted = NULL;
nxsem_init(&g_qentry_sem, 0, CONFIG_IOB_NCHAINS);
#endif
initialized = true;
} }
#endif
} }