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DEVICE_POLLING is an alternative to network interrupts and also

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needs to enter epoch.  Assert that in the netisr_poll() and do
the work for the idle poll routine.
This commit is contained in:
Gleb Smirnoff 2020-01-23 01:30:50 +00:00
parent 0b8df657a4
commit ad3980121b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=357007
1 changed files with 6 additions and 0 deletions
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6
sys/kern/kern_poll.c
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@ -37,6 +37,7 @@ __FBSDID("$FreeBSD$");
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/proc.h>
#include <sys/epoch.h>
#include <sys/eventhandler.h>
#include <sys/resourcevar.h>
#include <sys/socket.h> /* needed by net/if.h */
@ -332,6 +333,7 @@ hardclock_device_poll(void)
static void
ether_poll(int count)
{
struct epoch_tracker et;
int i;
mtx_lock(&poll_mtx);
@ -339,8 +341,10 @@ ether_poll(int count)
if (count > poll_each_burst)
count = poll_each_burst;
NET_EPOCH_ENTER(et);
for (i = 0 ; i < poll_handlers ; i++)
pr[i].handler(pr[i].ifp, POLL_ONLY, count);
NET_EPOCH_EXIT(et);
mtx_unlock(&poll_mtx);
}
@ -429,6 +433,8 @@ netisr_poll(void)
int i, cycles;
enum poll_cmd arg = POLL_ONLY;
NET_EPOCH_ASSERT();
if (poll_handlers == 0)
return;