summaryrefslogtreecommitdiffstats
path: root/block/accounting.c
Commit message (Collapse)AuthorAgeFilesLines
* block: add accounting for merged requestsPeter Lieven2015-02-061-0/+7
| | | | | | | Signed-off-by: Peter Lieven <pl@kamp.de> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: do not use get_clock()Paolo Bonzini2014-12-101-2/+4
| | | | | | | | | | | | | | | | | Use the external qemu-timer API instead. No one else should be calling cpu_get_clock(), get_clock() and get_clock_realtime() directly; they are internal functions and they should be confined to qemu-timer.c and cpus.c (where the icount implementation resides). All accesses should go through qemu_clock_get_ns. Cc: kwolf@redhat.com Cc: stefanha@redhat.com Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1417010463-3527-2-git-send-email-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: Make the block accounting functions operate on BlockAcctStatsBenoît Canet2014-09-101-13/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the next step for decoupling block accounting functions from BlockDriverState. In a future commit the BlockAcctStats structure will be moved from BlockDriverState to the device models structures. Note that bdrv_get_stats was introduced so device models can retrieve the BlockAcctStats structure of a BlockDriverState without being aware of it's layout. This function should go away when BlockAcctStats will be embedded in the device models structures. CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> CC: Keith Busch <keith.busch@intel.com> CC: Anthony Liguori <aliguori@amazon.com> CC: "Michael S. Tsirkin" <mst@redhat.com> CC: Paolo Bonzini <pbonzini@redhat.com> CC: Eric Blake <eblake@redhat.com> CC: Peter Maydell <peter.maydell@linaro.org> CC: Michael Tokarev <mjt@tls.msk.ru> CC: John Snow <jsnow@redhat.com> CC: Markus Armbruster <armbru@redhat.com> CC: Alexander Graf <agraf@suse.de> CC: Max Reitz <mreitz@redhat.com> Signed-off-by: Benoît Canet <benoit.canet@nodalink.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: rename BlockAcctType members to start with BLOCK_ instead of BDRV_Benoît Canet2014-09-101-2/+2
| | | | | | | | | | | | | | | | | | | | The middle term goal is to move the BlockAcctStats structure in the device models. (Capturing I/O accounting statistics in the device models is good for billing) This patch make a small step in this direction by removing a reference to BDRV. CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> CC: Keith Busch <keith.busch@intel.com> CC: Anthony Liguori <aliguori@amazon.com> CC: "Michael S. Tsirkin" <mst@redhat.com> CC: Paolo Bonzini <pbonzini@redhat.com> CC: John Snow <jsnow@redhat.com> CC: Richard Henderson <rth@twiddle.net> CC: Markus Armbruster <armbru@redhat.com> CC: Alexander Graf <agraf@suse.de>i Signed-off-by: Benoît Canet <benoit.canet@nodalink.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: Extract the block accounting codeBenoît Canet2014-09-101-0/+57
The plan is to add new accounting metrics (latency, invalid requests, failed requests, queue depth) and block.c is overpopulated so it will be better to work in a separate module. Moreover the long term plan is to have statistics in each of the BDS of the graph for metrology purpose; this means that the device model statistics must move from the topmost BDS to the device model. So we need to decouple the statistic code from BlockDriverState. This is another argument for the extraction of the code in a separate module. CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> CC: Max Reitz <mreitz@redhat.com> CC: Eric Blake <eblake@redhat.com> CC: Benoit Canet <benoit@irqsave.net> CC: Fam Zheng <famz@redhat.com> CC: Peter Crosthwaite <peter.crosthwaite@xilinx.com> CC: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Benoît Canet <benoit.canet@nodalink.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
OpenPOWER on IntegriCloud