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Commit 3e3aed0b authored by Ralph Campbell's avatar Ralph Campbell Committed by Roland Dreier
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IB/qib: Limit the number of packets processed per interrupt 



Don't processes too many packets without allowing other IRQ functions
a chance to run. Otherwise, there is a chance of getting a "soft
lockup" messages and poor application response times.

Signed-off-by: default avatarRalph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 4c6931f5

drivers/infiniband/hw/qib/qib_driver.c

+1 −1
Original line number Diff line number Diff line
@@ -335,7 +335,7 @@ u32 qib_kreceive(struct qib_ctxtdata *rcd, u32 *llic, u32 *npkts) 
		smp_rmb();  /* prevent speculative reads of dma'ed hdrq */

	}



	for (last = 0, i = 1; !last; i += !last) {

	for (last = 0, i = 1; !last && i <= 64; i += !last) {

		hdr = dd->f_get_msgheader(dd, rhf_addr);

		eflags = qib_hdrget_err_flags(rhf_addr);

		etype = qib_hdrget_rcv_type(rhf_addr);