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* RDS: IB: add few useful cache stastsSantosh Shilimkar2017-01-021-0/+2
| | | | | | Tracks the ib receive cache total, incoming and frag allocations. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
* RDS: IB: add mr reused statssantosh.shilimkar@oracle.com2016-03-021-0/+2
| | | | | | | | Add MR reuse statistics to RDS IB transport. Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* RDS: IB: split mr pool to improve 8K messages performanceSantosh Shilimkar2015-10-051-6/+12
| | | | | | | | | | | | | | | | 8K message sizes are pretty important usecase for RDS current workloads so we make provison to have 8K mrs available from the pool. Based on number of SG's in the RDS message, we pick a pool to use. Also to make sure that we don't under utlise mrs when say 8k messages are dominating which could lead to 8k pull being exhausted, we fall-back to 1m pool till 8k pool recovers for use. This helps to at least push ~55 kB/s bidirectional data which is a nice improvement. Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
* RDS: IB: split send completion handling and do batch ackSantosh Shilimkar2015-10-051-1/+0
| | | | | | | | | | | | Similar to what we did with receive CQ completion handling, we split the transmit completion handler so that it lets us implement batched work completion handling. We re-use the cq_poll routine and makes use of RDS_IB_SEND_OP to identify the send vs receive completion event handler invocation. Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
* RDS: IB: ack more receive completions to improve performanceSantosh Shilimkar2015-10-051-1/+2
| | | | | | | | | | | | | | For better performance, we split the receive completion IRQ handler. That lets us acknowledge several WCE events in one call. We also limit the WC to max 32 to avoid latency. Acknowledging several completions in one call instead of several calls each time will provide better performance since less mutual exclusion locks are being performed. In next patch, send completion is also split which re-uses the poll_cq() and hence the code is moved to ib_cm.c Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
* RDS: Move atomic stats from general to ib-specific areaAndy Grover2010-09-081-0/+2
| | | | Signed-off-by: Andy Grover <andy.grover@oracle.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2009-09-151-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (46 commits) powerpc64: convert to dynamic percpu allocator sparc64: use embedding percpu first chunk allocator percpu: kill lpage first chunk allocator x86,percpu: use embedding for 64bit NUMA and page for 32bit NUMA percpu: update embedding first chunk allocator to handle sparse units percpu: use group information to allocate vmap areas sparsely vmalloc: implement pcpu_get_vm_areas() vmalloc: separate out insert_vmalloc_vm() percpu: add chunk->base_addr percpu: add pcpu_unit_offsets[] percpu: introduce pcpu_alloc_info and pcpu_group_info percpu: move pcpu_lpage_build_unit_map() and pcpul_lpage_dump_cfg() upward percpu: add @align to pcpu_fc_alloc_fn_t percpu: make @dyn_size mandatory for pcpu_setup_first_chunk() percpu: drop @static_size from first chunk allocators percpu: generalize first chunk allocator selection percpu: build first chunk allocators selectively percpu: rename 4k first chunk allocator to page percpu: improve boot messages percpu: fix pcpu_reclaim() locking ... Fix trivial conflict as by Tejun Heo in kernel/sched.c
| * percpu: use DEFINE_PER_CPU_SHARED_ALIGNED()Tejun Heo2009-06-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are a few places where ___cacheline_aligned* is used with DEFINE_PER_CPU(). Use DEFINE_PER_CPU_SHARED_ALIGNED() instead. DEFINE_PER_CPU_SHARED_ALIGNED() applies alignment only on SMPs. While all other converted places used _in_smp variant or only get compiled for SMP, net/rds used unconditional ____cacheline_aligned. I don't see any reason these data structures should be aligned on UP and thus converted together. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Andy Grover <andy.grover@oracle.com>
* | net: mark read-only arrays as constJan Engelhardt2009-08-051-1/+1
|/ | | | | | | | String literals are constant, and usually, we can also tag the array of pointers const too, moving it to the .rodata section. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* RDS/IB: Stats and sysctlsAndy Grover2009-02-261-0/+95
IB-specific stats and sysctls. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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