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2014-03-24iommu/vt-d: Make dmar_insert_dev_info() take struct device instead of struct ↵David Woodhouse
pci_dev Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2014-03-24iommu/vt-d: Make iommu_dummy() take struct device instead of struct pci_devDavid Woodhouse
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2014-03-24iommu/vt-d: Add ACPI devices into dmaru->devices[] arrayDavid Woodhouse
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2014-03-24iommu/vt-d: Change scope lists to struct device, bus, devfnDavid Woodhouse
It's not only for PCI devices any more, and the scope information for an ACPI device provides the bus and devfn so that has to be stored here too. It is the device pointer itself which needs to be protected with RCU, so the __rcu annotation follows it into the definition of struct dmar_dev_scope, since we're no longer just passing arrays of device pointers around. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2014-03-24i2c: cpm: Fix build by adding of_address.h and of_irq.hScott Wood
Fixes a build break due to the undeclared use of irq_of_parse_and_map() and of_iomap(). This build break was apparently introduced while the driver was unbuildable due to the bug fixed by 62c19c9d29e65086e5ae76df371ed2e6b23f00cd ("i2c: Remove usage of orphaned symbol OF_I2C"). When 62c19c was added in v3.14-rc7, the driver was enabled again, breaking the powerpc mpc85xx_defconfig and mpc85xx_smp_defconfig. 62c19c is marked for stable, so this should go there as well. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org
2014-03-24cgroup: Use RCU_INIT_POINTER(x, NULL) in cgroup.cMonam Agarwal
This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL) The rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. And in the case of the NULL pointer, there is no structure to initialize. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL) Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2014-03-24Merge remote-tracking branch 'asoc/topic/rcar' into asoc-nextMark Brown
2014-03-24Merge tag 'asoc-v3.15-3' into asoc-nextMark Brown
ASoC: Updates for v3.15 A few more updates for the merge window: - Fixes for the simple-card DAI format DT mess. - A new driver for Cirrus cs42xx8 devices. - DT support for a couple more devices. - A revert of a previous buggy fix for soc-pcm, plus a few more fixes and cleanups. # gpg: Signature made Sun 23 Mar 2014 16:56:11 GMT using RSA key ID 7EA229BD # gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>" # gpg: aka "Mark Brown <broonie@debian.org>" # gpg: aka "Mark Brown <broonie@kernel.org>" # gpg: aka "Mark Brown <broonie@tardis.ed.ac.uk>" # gpg: aka "Mark Brown <broonie@linaro.org>" # gpg: aka "Mark Brown <Mark.Brown@linaro.org>"
2014-03-24Merge tag 'asoc-v3.15-2' into asoc-nextMark Brown
ASoC: Updates for v3.15 This is mostly a few additional fixes from Lars-Peter, a new driver and cleaning up a git failure with merging the Intel branch (combined with an xargs failure to pay attention to error codes). The history lists a bunch of additional commits for the branch but the content of those commits is actually present already but not recorded in history due to git failing. Unfortunately xargs is used in the merge script and it doesn't do a good job of noticing errors from the commands it invokes. # gpg: Signature made Thu 13 Mar 2014 14:25:44 GMT using RSA key ID 7EA229BD # gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>" # gpg: aka "Mark Brown <broonie@debian.org>" # gpg: aka "Mark Brown <broonie@kernel.org>" # gpg: aka "Mark Brown <broonie@tardis.ed.ac.uk>" # gpg: aka "Mark Brown <broonie@linaro.org>" # gpg: aka "Mark Brown <Mark.Brown@linaro.org>"
2014-03-24Merge tag 'asoc-v3.15' into asoc-nextMark Brown
ASoC: Updates for v3.15 Quite a busy release for ASoC this time, more on janitorial work than exciting new features but welcome nontheless: - Lots of cleanups from Takashi for enumerations; the original API for these was error prone so he's refactored lots of code to use more modern APIs which avoid issues. - Elimination of the ASoC level wrappers for I2C and SPI moving us closer to converting to regmap completely and avoiding some randconfig hassle. - Provide both manually and transparently locked DAPM APIs rather than a mix of the two fixing some concurrency issues. - Start converting CODEC drivers to use separate bus interface drivers rather than having them all in one file helping avoid dependency issues. - DPCM support for Intel Haswell and Bay Trail platforms. - Lots of work on improvements for simple-card, DaVinci and the Renesas rcar drivers. - New drivers for Analog Devices ADAU1977, TI PCM512x and parts of the CSR SiRF SoC. # gpg: Signature made Wed 12 Mar 2014 23:05:45 GMT using RSA key ID 7EA229BD # gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>" # gpg: aka "Mark Brown <broonie@debian.org>" # gpg: aka "Mark Brown <broonie@kernel.org>" # gpg: aka "Mark Brown <broonie@tardis.ed.ac.uk>" # gpg: aka "Mark Brown <broonie@linaro.org>" # gpg: aka "Mark Brown <Mark.Brown@linaro.org>"
2014-03-24Merge remote-tracking branches 'asoc/fix/cs42l51', 'asoc/fix/cs42l52', ↵Mark Brown
'asoc/fix/cs42l73', 'asoc/fix/rcar', 'asoc/fix/spear' and 'asoc/fix/tegra' into asoc-linus
2014-03-24spi: topcliff-pch: Properly unregister platform devices on probe() error pathsAxel Lin
Ensure all registered platform devices are unregistered on probe() error paths. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-24Merge branch 'kvms390-irqfd' of ↵Paolo Bonzini
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-next
2014-03-24regulator: st-pwm: Convert to get_voltage_selAxel Lin
Also remove test for selector in st_pwm_regulator_set_voltage_sel, the checking is already done in .list_voltage. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-24ASoC: rcar: bugfix: it cares about the non-src caseKuninori Morimoto
src might not exist. kernel will be hung-up without this patch in such case. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-24ARM: bockw: fixup SND_SOC_DAIFMT_CBx_CFx flagsKuninori Morimoto
SND_SOC_DAIFMT_CBx_CFx means "codec" side master/slave mode. Then, rcar will be master mode if it was SND_SOC_DAIFMT_CBS_CFS. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-24arm64: Remove pgprot_dmacoherent()Catalin Marinas
Since this macro is identical to pgprot_writecombine() and is only used in a single place, remove it completely to avoid confusion. On ARMv7+ processors, the coherent DMA mapping must be Normal NonCacheable (a.k.a. writecombine) to avoid mismatched hardware attribute aliases (with the kernel linear mapping as Normal Cacheable). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-03-24arm64: Support DMA_ATTR_WRITE_COMBINELaura Abbott
DMA_ATTR_WRITE_COMBINE is currently ignored. Set the pgprot appropriately for non coherent opperations. Signed-off-by: Laura Abbott <lauraa@codeaurora.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-03-24arm64: Implement custom mmap functions for dma mappingLaura Abbott
The current dma_ops do not specify an mmap function so maping falls back to the default implementation. There are at least two issues with using the default implementation: 1) The pgprot is always pgprot_noncached (strongly ordered) memory even with coherent operations 2) dma_common_mmap calls virt_to_page on the remapped non-coherent address which leads to invalid memory being mapped. Fix both these issue by implementing a custom mmap function which correctly accounts for remapped addresses and sets vm_pg_prot appropriately. Signed-off-by: Laura Abbott <lauraa@codeaurora.org> [catalin.marinas@arm.com: replaced "arm64_" with "__" prefix for consistency] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-03-24Merge tag 'asoc-v3.15-3' of ↵Takashi Iwai
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next ASoC: Updates for v3.15 A few more updates for the merge window: - Fixes for the simple-card DAI format DT mess. - A new driver for Cirrus cs42xx8 devices. - DT support for a couple more devices. - A revert of a previous buggy fix for soc-pcm, plus a few more fixes and cleanups.
2014-03-24Merge branch 'qlcnic-next'David S. Miller
Shahed Shaikh says: ==================== This patch series containes following changes - * TSO over IPv4 and IPv6, Tx checksum offload for VXLAN * Rx checksum offload for VXLAN and support for .ndo_{add|del}_vxlan_port netdev ops. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-24qlcnic: Update version to 5.3.57Shahed Shaikh
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-24qlcnic: Add VXLAN Rx offload supportShahed Shaikh
This patch adds Rx checksum offload support for VXLAN. Implements .ndo_{add|del}_vxlan_port netdev ops. Adapter supports only one VXLAN port, so program adapter with very first UDP port which VXLAN driver is listening to. Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-24qlcnic: Add VXLAN Tx offload supportShahed Shaikh
This patch adds LSO, LSO6 and Tx checksum offload support for VXLAN encapsulated packets on 83xx/84xx series adapters. Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-24gianfar: Fix P1010 config regression (SQ polling)Claudiu Manoil
The P1010 device tree restricts the number of supported interrupt groups to 1, although the eth controller can support 2 interrupt groups and the driver assumes the Multi-Group mode ("fsl,etsec2" model). So, in this case the assumption that the Multi-Group mode (MQ_MG_MODE) devices always support 2 interrupt groups is false. To fix this, a check for the actual number of interrupt groups enabled in the board's device tree has been added in gfar_probe for the "fsl,etsec2" devices. Without this fix, P1010 based boards claim support for 2 Tx queues to the net stack but only one is actually allocated, leading to NULL access in xmit. This issue was introduced by enabling Single-Queue polling for the P1010 devices. (71ff9e3 gianfar: Use Single-Queue polling for "fsl,etsec2") Fixes: 71ff9e3df7e1c5d3293af6b595309124e8c97412 Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-24net: micrel : ks8851-ml: add vdd-supply supportNishanth Menon
Few platforms use external regulator to keep the ethernet MAC supplied. So, request and enable the regulator for driver functionality. Fixes: 66fda75f47dc (regulator: core: Replace direct ops->disable usage) Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Suggested-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-24ipv4: remove ipv4_ifdown_dst from route.cLi RongQing
ipv4_ifdown_dst does nothing after IPv4 route caches removal, so we can remove it. Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-24net: optimize csum_replace2()Eric Dumazet
When changing one 16bit value by another in IP header, we can adjust the IP checksum by doing a simple operation described in RFC 1624, as reminded by David. csum_partial() is a complex function on x86_64, not really suited for small number of checksummed bytes. I spotted csum_partial() being in the top 20 most consuming functions (more than 1 %) in a GRO workload, which was rather unexpected. The caller was inet_gro_complete() doing a csum_replace2() when building the new IP header for the GRO packet. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-24VERIFY_OCTAL_PERMISSIONS: stricter checking for sysfs perms.Rusty Russell
Summary of http://lkml.org/lkml/2014/3/14/363 : Ted: module_param(queue_depth, int, 444) Joe: 0444! Rusty: User perms >= group perms >= other perms? Joe: CLASS_ATTR, DEVICE_ATTR, SENSOR_ATTR and SENSOR_ATTR_2? Side effect of stricter permissions means removing the unnecessary S_IFREG from several callers. Note that the BUILD_BUG_ON_ZERO((perm) & 2) test was removed: a fair number of drivers fail this test, so that will be the debate for a future patch. Suggested-by: Joe Perches <joe@perches.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> for drivers/pci/slot.c Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Miklos Szeredi <miklos@szeredi.hu> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-03-24virtio-blk: base queue-depth on virtqueue ringsize or module paramRusty Russell
Venkatash spake thus: virtio-blk set the default queue depth to 64 requests, which was insufficient for high-IOPS devices. Instead set the blk-queue depth to the device's virtqueue depth divided by two (each I/O requires at least two VQ entries). But behold, Ted added a module parameter: Also allow the queue depth to be something which can be set at module load time or via a kernel boot-time parameter, for testing/benchmarking purposes. And I rewrote it substantially, mainly to take VIRTIO_RING_F_INDIRECT_DESC into account. As QEMU sets the vq size for PCI to 128, Venkatash's patch wouldn't have made a change. This version does (since QEMU also offers VIRTIO_RING_F_INDIRECT_DESC. Inspired-by: "Theodore Ts'o" <tytso@mit.edu> Based-on-the-true-story-of: Venkatesh Srinivas <venkateshs@google.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: virtio-dev@lists.oasis-open.org Cc: virtualization@lists.linux-foundation.org Cc: Frank Swiderski <fes@google.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-03-24Revert a02bbb1ccfe8: MAINTAINERS: add virtio-dev ML for virtioRusty Russell
The OASIS virtio-dev mailing list is a good place for implementers to discuss details of the standard, but it requires subscription to avoid IP issues :( It makes more sense to stick with the virtualization@lists.linux-foundation.org mailing list for bug reports. We can refer to the OASIS list if it involves a question on the standard itself. Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2014-03-23Input: wistron_btns - simplify dependenciesJean Delvare
Kconfig symbol X86_32 was introduced in October 2005, it's about time to use it. This clears the last occurrence of the legacy "X86 && !X86_64" construct :-) Signed-off-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-23Input: olpc_apsp - fix dependencies of OLPC AP-SP driverJean Delvare
I don't think the OLPC AP-SP driver is generally useful without OLPC support. So make it depend on OLPC, unless build testing is enabled. Signed-off-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-23Input: hp_sdc - use del_timer_sync() in exit pathThomas Gleixner
Make sure that no callback is running before we teardown the module. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-24Merge remote-tracking branch 'scott/next' into nextBenjamin Herrenschmidt
Freescale updates from Scott. Mostly support for critical and machine check exceptions on 64-bit BookE, some new PCI suspend/resume work and misc bits.
2014-03-24powerpc/book3s: Fix CFAR clobbering issue in machine check handler.Mahesh Salgaonkar
While checking powersaving mode in machine check handler at 0x200, we clobber CFAR register. Fix it by saving and restoring it during beq/bgt. Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc/compat: 32-bit little endian machine name is ppcle, not ppcAnton Blanchard
I noticed this when testing setarch. No, we don't magically support a big endian userspace on a little endian kernel. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: stable@vger.kernel.org # v3.10+ Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc/le: Big endian arguments for ppc_rtas()Greg Kurz
The ppc_rtas() syscall allows userspace to interact directly with RTAS. For the moment, it assumes every thing is big endian and returns either EINVAL or EFAULT when called in a little endian environment. As suggested by Benjamin, to avoid bugs when userspace wants to pass a non 32 bit value to RTAS, it is far better to stick with a simple rationale: ppc_rtas() should be called with a big endian rtas_args structure. With this patch, it is now up to userspace to forge big endian arguments, as expected by RTAS. Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc: Use default set of netfilter modules (CONFIG_NETFILTER_ADVANCED=n)Anton Blanchard
Our netfilter options are stale and important things like masquerading are no longer enabled. Instead of trying to keep up with any updates, set CONFIG_NETFILTER_ADVANCED=n on ppc64* and pseries* defconfigs. This enables the most common netfilter modules for us. While here, enable the network bridge module which is heavily used in KVM setups. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc/defconfigs: Enable THP in pseries defconfigAneesh Kumar K.V
We also set it to be enabled always. This helps in wider testing Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc/mm: Make sure a local_irq_disable prevent a parallel THP splitAneesh Kumar K.V
We have generic code like the one in get_futex_key that assume that a local_irq_disable prevents a parallel THP split. Support that by adding a dummy smp call function after setting _PAGE_SPLITTING. Code paths like get_user_pages_fast still need to check for _PAGE_SPLITTING after disabling IRQ which indicate that a parallel THP splitting is ongoing. Now if they don't find _PAGE_SPLITTING set, then we can be sure that parallel split will now block in pmdp_splitting flush until we enables IRQ Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc: Rate-limit users spamming kernel log bufferMichael Neuling
The facility unavailable exception can be triggered from userspace by accessing PMU registers when EBB is not enabled. This causes the included pr_err() to run, hence spamming the kernel log buffer. This avoids this by rate limiting these messages. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc/perf: Fix handling of L3 events with bank == 1Michael Ellerman
Currently we reject events which have the L3 bank == 1, such as 0x000084918F, because the cache field is non-zero. However that is incorrect, because although the bank is non-zero, the value we would write into MMCRC is zero, and so we can count the event. So fix the check to ignore the bank selector when checking whether the cache selector is non-zero. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc/perf/hv_{gpci, 24x7}: Add documentation of device attributesCody P Schafer
gpci and 24x7 expose some device specific attributes. Add some documentation for them. Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc/perf: Add kconfig option for hypervisor provided countersCody P Schafer
The commit adds a Kconfig option which allows the hv_gpci and hv_24x7 PMUs, added in the preceeding commits, to be built. Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc/perf: Add support for the hv 24x7 interfaceCody P Schafer
This provides a basic interface between hv_24x7 and perf. Similar to the one provided for gpci, it lacks transaction support and does not list any events. Example usage via perf tool: perf stat -e 'hv_24x7/domain=2,offset=8,starting_index=0,lpar=0xffffffff/' -r 0 -C 0 -x ' ' sleep 0.1 Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc/perf: Add support for the hv gpci (get performance counter info) ↵Cody P Schafer
interface This provides a basic link between perf and hv_gpci. Notably, it does not yet support transactions and does not list any events (they can still be manually composed). Example usage via perf tool: perf stat -e 'hv_gpci/counter_info_version=3,offset=0,length=8,secondary_index=0,starting_index=0xffffffff,request=0x10/' -r 0 -C 0 -x ' ' sleep 0.1 Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc/perf: Add macros for defining event fields & formatsCody P Schafer
Add two macros which generate functions to extract the relevent bits from event->attr.config{,1,2}. EVENT_DEFINE_RANGE() defines an accessor for a range of bits in the event, as well as a "max" function that gives the maximum value of the field based on the bit width. EVENT_DEFINE_RANGE_FORMAT() defines the accessor & max routine and also a format attribute for use in the PMU's attr_groups. Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> [mpe: move to powerpc, ugly but descriptive macro names] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc/perf: Add a shared interface to get gpci version and capabilitiesCody P Schafer
This exposes a simple way to grab the firmware provided collect_priveliged, ga, expanded, and lab capability bits. All of these bits come in from the same gpci request, so we've exposed all of them. Only the collect_priveliged bit is really used by the hv-gpci/hv-24x7 code, the other bits are simply exposed in sysfs to inform the user. Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-03-24powerpc/perf: Add 24x7 interface headersCody P Schafer
24x7 (also called hv_24x7 or H_24X7) is an interface to obtain performance counters from the hypervisor. These counters do not have a fixed format/possition and are instead documented in a "24x7 Catalog", which is provided by the hypervisor (that interface is also documented paritialy in the included hv-24x7-catalog.h and fully in at https://raw.githubusercontent.com/jmesmon/catalog-24x7/master/hv-24x7-catalog.h ). The 24x7 data access is simply a copy operation into a 4 dimentional array of 64bit counters (from hypervisor to kernel memory). There is no interupt triggered on overflow, these are completely disjoint from the typical power pmu. This method of obtaining performance counters from the hypervisor is intended to paritialy replace the gpci interface. Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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