Mike Marciniszyn bb77a07723 IB/qib: Optimize pio ack buffer allocation ... This patch optimizes pio buffer allocation in the kernel. For qib, kernel pio buffers are used for sending acks. The code to allocate the buffer would always start at 0 until it found a buffer. This means that an average of 64 comparisions were done on each allocate, since the busy bit won't be cleared until the bits are refreshed when buffers are exhausted. This patch adds two new fields in the devdata struct, last_pio and min_kernel_pio. last_pio is the last buffer that was allocated. min_kernel_pio is the lowest potential available buffer. min_kernel_pio is modifed as contexts are allocated and deallocted. Reviewed-by: Ramkrishna Vepa <ramkrishna.vepa@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>		2012-05-14 12:37:03 -07:00
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Kconfig	RDMA: Add netlink infrastructure	2011-05-20 11:46:11 -07:00
Makefile	IB/qib: Use request_firmware() to load SD7220 firmware	2010-07-08 13:27:05 -07:00
qib_6120_regs.h
qib_7220_regs.h
qib_7220.h	IB/qib: Eliminate 64-bit jiffies use	2012-01-03 20:52:12 -08:00
qib_7322_regs.h	IB/qib: Mask hardware error during link reset	2010-07-06 14:13:20 -07:00
qib_common.h	IB/qib: Allow PSM to select from multiple port assignment algorithms	2010-07-21 11:39:36 -07:00
qib_cq.c	IB/qib: Generate completion callback on errors	2011-01-10 17:42:19 -08:00
qib_diag.c	infiniband: add in export.h for files using EXPORT_SYMBOL/THIS_MODULE	2011-10-31 19:31:35 -04:00
qib_dma.c
qib_driver.c	IB/qib: Add prefetch for eager buffers	2012-05-14 12:36:18 -07:00
qib_eeprom.c
qib_file_ops.c	IB/qib: Correct sense on freectxts increment and decrement	2011-12-19 09:19:34 -08:00
qib_fs.c	infiniband: umode_t noise, including open-coded S_ISDIR()	2012-01-03 22:55:03 -05:00
qib_iba6120.c	IB/qib: Optimize pio ack buffer allocation	2012-05-14 12:37:03 -07:00
qib_iba7220.c	IB/qib: Optimize pio ack buffer allocation	2012-05-14 12:37:03 -07:00
qib_iba7322.c	IB/qib: Optimize pio ack buffer allocation	2012-05-14 12:37:03 -07:00
qib_init.c	IB/qib: Fix style issues	2012-01-03 20:51:42 -08:00
qib_intr.c	IB/qib: Ensure that LOS and DFE are being turned off	2011-06-17 11:56:59 -07:00
qib_keys.c	IB/qib: Fix refcount leak in lkey/rkey validation	2011-01-10 17:42:23 -08:00
qib_mad.c	IB/qib: Avoid filtering LID on SMA portinfo	2012-02-25 17:45:50 -08:00
qib_mad.h	IB/pma: Add include file for IBA performance counters definitions	2011-07-18 21:04:35 -07:00
qib_mmap.c
qib_mr.c	IB/qib: RDMA lkey/rkey validation is inefficient for large MRs	2011-01-10 17:42:22 -08:00
qib_pcie.c	IB/qib: Add logic for affinity hint	2012-02-25 17:45:49 -08:00
qib_pio_copy.c
qib_qp.c	IB/qib: Precompute timeout jiffies to optimize latency	2011-10-21 09:38:56 -07:00
qib_qsfp.c	IB/qib: Fix over-scheduling of QSFP work	2011-11-28 12:17:33 -08:00
qib_qsfp.h	IB/qib: Eliminate 64-bit jiffies use	2012-01-03 20:52:12 -08:00
qib_rc.c	IB: Change CQE "csum_ok" field to a bit flag	2012-03-08 12:34:27 -08:00
qib_ruc.c	IB/qib: Remove s_lock around header validation	2011-10-21 09:38:57 -07:00
qib_sd7220.c	IB/qib: Fix style issues	2012-01-03 20:51:42 -08:00
qib_sdma.c	infiniband: add moduleparam.h to drivers/infiniband as required	2011-10-31 19:31:36 -04:00
qib_srq.c	RDMA/core: Add SRQ type field	2011-10-13 09:13:26 -07:00
qib_sysfs.c	IB/qib: Fix style issues	2012-01-03 20:51:42 -08:00
qib_twsi.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
qib_tx.c	IB/qib: Optimize pio ack buffer allocation	2012-05-14 12:37:03 -07:00
qib_uc.c	IB: Change CQE "csum_ok" field to a bit flag	2012-03-08 12:34:27 -08:00
qib_ud.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
qib_user_pages.c	mm: distinguish between mlocked and pinned pages	2011-10-31 17:30:46 -07:00
qib_user_sdma.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
qib_user_sdma.h
qib_verbs_mcast.c
qib_verbs.c	IB/qib: Optimize locking for get_txreq()	2012-01-03 20:53:31 -08:00
qib_verbs.h	IB/qib: Precompute timeout jiffies to optimize latency	2011-10-21 09:38:56 -07:00
qib_wc_ppc64.c
qib_wc_x86_64.c
qib.h	IB/qib: Optimize pio ack buffer allocation	2012-05-14 12:37:03 -07:00