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net: Switch from per-iface tx thread to a unique k_poll triggered one

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Now that k_poll landed in the kernel, it's worth using it to save
memory and reduce the number of threads at runtime.

Such switch has been first done in bluetooth (see hci_core.c and conn.c
in subsys/bluetooth/host). Since network interfaces kind of follows the
same design for sending data, it was then easy to copy the same change as
in bluetooth.

Change-Id: I7f9734b88ac818284bbabaedc946b4765b905ebb
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This commit is contained in:
Tomasz Bursztyka 2017-03-08 09:30:03 +01:00 • committed by Jukka Rissanen
commit e38a9e8b9c
6 changed files with 96 additions and 67 deletions
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10
include/linker/common-ram.ld
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@ -134,10 +134,18 @@
{
__net_if_start = .;
*(".net_if.*")
KEEP(*(SORT_BY_NAME(".net_if*")))
KEEP(*(SORT_BY_NAME(".net_if.*")))
__net_if_end = .;
} GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
SECTION_DATA_PROLOGUE(net_if_event, (OPTIONAL),)
{
__net_if_event_start = .;
*(".net_if_event.*")
KEEP(*(SORT_BY_NAME(".net_if_event.*")))
__net_if_event_end = .;
} GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
#if defined(CONFIG_NET_SHELL)
SECTION_DATA_PROLOGUE(net_stack, (OPTIONAL),)
{