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2015-05-05perf tools: Add AUX area tracing Snapshot ModeAdrian Hunter
Add support for making snapshots of AUX area tracing data. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1430404667-10593-9-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-05perf tools: Add support for PERF_RECORD_ITRACE_STARTAdrian Hunter
Add support for the PERF_RECORD_ITRACE_START event type. This event can be used to determine the pid and tid that are running when Instruction Tracing starts. Generally that information would come from a sched_switch event but, at the start, no sched_switch events may yet have been recorded. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1430404667-10593-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-05perf tools: Add support for PERF_RECORD_AUXAdrian Hunter
Add support for the PERF_RECORD_AUX event type. PERF_RECORD_AUX is a new kernel event that records when new data lands in the AUX buffer. Currently it is assumed that AUX data follows the same ring buffer conventions used by the perf events buffer, and consequently the AUX event is not processed during recording. It is processed during session processing so that the information in the 'flags' member is made available. The format of PERF_RECORD_AUX is outlined in the linux/perf_events.h header file. The 'flags' are also enumerated. Intel PT and Intel BTS use the flag named PERF_AUX_FLAG_TRUNCATED to determine if data has been lost because the buffer became full as perf was not able to empty it fast enough. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1430404667-10593-7-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-05perf auxtrace: Add option to synthesize events for transactionsAdrian Hunter
Add AUX area tracing option 'x' to synthesize events for transactions. This will be used by Intel PT to synthesize an event record for each TSX start, commit or abort. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1430404667-10593-6-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-05perf tools: Add build option NO_AUXTRACE to exclude AUX area tracingAdrian Hunter
Add build option NO_AUXTRACE to exclude compiling support for AUX area tracing. Support for both recording and processing is excluded and by implication any future additions such as Intel PT and Intel BTS will also not be compiled in with this option. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1430404667-10593-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-05thinkpad_acpi: Fix warning for static not at beginningJean Delvare
Fix the following warning: warning: "static" is not at beginning of declaration void static hotkey_mask_warn_incomplete_mask(void) ^ Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Henrique de Moraes Holschuh <ibm-acpi@hmh.eng.br> Cc: Darren Hart <dvhart@infradead.org> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2015-05-05ipmi: Don't report err in the SI driver for SSIF devicesCorey Minyard
Really ignore them by returning -ENODEV from the probe, but not doing anything. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2015-05-05ipmi: Remove incorrect use of seq_has_overflowedJoe Perches
commit d6c5dc18d863 ("ipmi: Remove uses of return value of seq_printf") incorrectly changed the return value of various proc_show functions to use seq_has_overflowed(). These functions should return 0 on completion rather than 1/true on overflow. 1 is the same as #define SEQ_SKIP which would cause the output to not be emitted (skipped) instead. This is a logical defect only as the length of these outputs are all smaller than the initial allocation done by the seq filesystem. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2015-05-05ipmi:ssif: Ignore spaces when comparing I2C adapter namesCorey Minyard
Some of the adapters have spaces in their names, but that's really hard to pass in as a module or kernel parameters. So ignore the spaces. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2015-05-05ipmi_ssif: Fix the logic on user-supplied addressesCorey Minyard
Returning zero is success. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2015-05-05x86: Make cpu_tss available to external modulesMarc Dionne
Commit 75182b1632 ("x86/asm/entry: Switch all C consumers of kernel_stack to this_cpu_sp0()") changed current_thread_info to use this_cpu_sp0, and indirectly made it rely on init_tss which was exported with EXPORT_PER_CPU_SYMBOL_GPL. As a result some macros and inline functions such as set/get_fs, test_thread_flag and variants have been made unusable for external modules. Make cpu_tss exported with EXPORT_PER_CPU_SYMBOL so that these functions are accessible again, as they were previously. Signed-off-by: Marc Dionne <marc.dionne@your-file-system.com> Acked-by: Andy Lutomirski <luto@amacapital.net> Link: http://lkml.kernel.org/r/1430763404-21221-1-git-send-email-marc.dionne@your-file-system.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-05-05hypervisor/x86/xen: Unset X86_BUG_SYSRET_SS_ATTRS on Xen PV guestsBoris Ostrovsky
Commit 61f01dd941ba ("x86_64, asm: Work around AMD SYSRET SS descriptor attribute issue") makes AMD processors set SS to __KERNEL_DS in __switch_to() to deal with cases when SS is NULL. This breaks Xen PV guests who do not want to load SS with__KERNEL_DS. Since the problem that the commit is trying to address would have to be fixed in the hypervisor (if it in fact exists under Xen) there is no reason to set X86_BUG_SYSRET_SS_ATTRS flag for PV VPCUs here. This can be easily achieved by adding x86_hyper_xen_hvm.set_cpu_features op which will clear this flag. (And since this structure is no longer HVM-specific we should do some renaming). Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Reported-by: Sander Eikelenboom <linux@eikelenboom.it> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-05-05xen/events: Set irq_info->evtchn before binding the channel to CPU in ↵Boris Ostrovsky
__startup_pirq() .. because bind_evtchn_to_cpu(evtchn, cpu) will map evtchn to 'info' and pass 'info' down to xen_evtchn_port_bind_to_cpu(). Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Tested-by: Annie Li <annie.li@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-05-05xen/console: Update console event channel on resumeBoris Ostrovsky
After a resume the hypervisor/tools may change console event channel number. We should re-query it. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-05-05xen/xenbus: Update xenbus event channel on resumeBoris Ostrovsky
After a resume the hypervisor/tools may change xenbus event channel number. We should re-query it. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-05-05xen/events: Clear cpu_evtchn_mask before resumingBoris Ostrovsky
When a guest is resumed, the hypervisor may change event channel assignments. If this happens and the guest uses 2-level events it is possible for the interrupt to be claimed by wrong VCPU since cpu_evtchn_mask bits may be stale. This can happen even though evtchn_2l_bind_to_cpu() attempts to clear old bits: irq_info that is passed in is not necessarily the original one (from pre-migration times) but instead is freshly allocated during resume and so any information about which CPU the channel was bound to is lost. Thus we should clear the mask during resume. We also need to make sure that bits for xenstore and console channels are set when these two subsystems are resumed. While rebind_evtchn_irq() (which is invoked for both of them on a resume) calls irq_set_affinity(), the latter will in fact postpone setting affinity until handling the interrupt. But because cpu_evtchn_mask will have bits for these two cleared we won't be able to take the interrupt. With that in mind, we need to bind those two channels explicitly in rebind_evtchn_irq(). We will keep irq_set_affinity() so that we have a pass through generic irq affinity code later, in case something needs to be updated there as well. (Also replace cpumask_of(0) with cpumask_of(info->cpu) in rebind_evtchn_irq(): it should be set to zero in preceding xen_irq_info_evtchn_setup().) Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Reported-by: Annie Li <annie.li@oracle.com> Cc: <stable@vger.kernel.org> # 3.14+ Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-05-05MAINTAINERS: Update InfiniBand subsystem maintainerDoug Ledford
Since Roland stepped down, the community asked me to take his place, and the nomination was followed by sufficient votes and no dissensions that we can move forward with the change. Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05MAINTAINERS: add include/rdma/ to InfiniBand subsystemYann Droneaud
Most headers for InfiniBand/RDMA are located under include/rdma/ and include/uapi/rdma. Signed-off-by: Yann Droneaud <ydroneaud@opteya.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05IPoIB/CM: Fix indentation levelBart Van Assche
See also patch "IPoIB/cm: Add connected mode support for devices without SRQs" (commit ID 68e995a29572). Detected by smatch. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Pradeep Satyanarayana <pradeeps@linux.vnet.ibm.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05iw_cxgb4: Remove negative advice dmesg warningsHariprasad S
Remove these log messages in favor of per-endpoint counters as well as device-global counters that can be inspected via debugfs. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05IB/core: Fix unaligned accessesDavid Ahern
Addresses the following kernel logs seen during boot of sparc systems: Kernel unaligned access at TPC[103bce50] cm_find_listen+0x34/0xf8 [ib_cm] Kernel unaligned access at TPC[103bce50] cm_find_listen+0x34/0xf8 [ib_cm] Kernel unaligned access at TPC[103bce50] cm_find_listen+0x34/0xf8 [ib_cm] Kernel unaligned access at TPC[103bce50] cm_find_listen+0x34/0xf8 [ib_cm] Kernel unaligned access at TPC[103bce50] cm_find_listen+0x34/0xf8 [ib_cm] Signed-off-by: David Ahern <david.ahern@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05IB/core: change rdma_gid2ip into void function as it always return zeroHonggang LI
Signed-off-by: Honggang Li <honli@redhat.com> Acked-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds
Pull crypto fixes from Herbert Xu: "This fixes a build problem with bcm63xx and yet another fix to the memzero_explicit function to ensure that the memset is not elided" * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: hwrng: bcm63xx - Fix driver compilation lib: make memzero_explicit more robust against dead store elimination
2015-05-05Merge tag 'media/v4.1-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media fixes from Mauro Carvalho Chehab: "Three driver fixes: - fix for omap4, fixing a regression due to a subsystem API that got removed for 4.1 (commit efde234674d9); - fix for one of the formats supported by Marvel ccic driver; - fix rcar_vin driver that, when stopping abnormally, the driver can't return from wait_for_completion" * tag 'media/v4.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: [media] v4l: omap4iss: Replace outdated OMAP4 control pad API with syscon [media] media: soc_camera: rcar_vin: Fix wait_for_completion [media] marvell-ccic: fix Y'CbCr ordering
2015-05-05perf probe: Fix segfault if passed with ''.Wang Nan
Since parse_perf_probe_point() deals with a user passed argument, we should not assume it to be a valid string. Without this patch, if pass '' to perf probe, a segfault raises: $ perf probe -a '' Segmentation fault This patch checks argument of parse_perf_probe_point() before string processing. After this patch: $ perf probe -a '' usage: perf probe [<options>] 'PROBEDEF' ['PROBEDEF' ...] or: perf probe [<options>] --add 'PROBEDEF' [--add 'PROBEDEF' ...] ... Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Zefan Li <lizefan@huawei.com> Link: http://lkml.kernel.org/r/1430210769-94177-1-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-05efi: Fix error handling in add_sysfs_runtime_map_entry()Dan Carpenter
I spotted two (difficult to hit) bugs while reviewing this. 1) There is a double free bug because we unregister "map_kset" in add_sysfs_runtime_map_entry() and also efi_runtime_map_init(). 2) If we fail to allocate "entry" then we should return ERR_PTR(-ENOMEM) instead of NULL. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Dave Young <dyoung@redhat.com> Cc: Guangyu Sun <guangyu.sun@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-05-05IB/qib: use arch_phys_wc_add()Luis R. Rodriguez
This driver already makes use of ioremap_wc() on PIO buffers, so convert it to use arch_phys_wc_add(). The qib driver uses a mmap() special case for when PAT is not used, this behaviour used to be determined with a module parameter but since we have been asked to just remove that module parameter this checks for the WC cookie, if not set we can assume PAT was used. If its set we do what we used to do for the mmap for when MTRR was enabled. The removal of the module parameter is OK given that Andy notes that even if users of module parameter are still around it will not prevent loading of the module on recent kernels. Cc: Doug Ledford <dledford@redhat.com> Cc: Toshi Kani <toshi.kani@hp.com> Cc: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Cc: Mike Marciniszyn <mike.marciniszyn@intel.com> Cc: Roland Dreier <roland@purestorage.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Cc: Dennis Dalessandro <dennis.dalessandro@intel.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Suresh Siddha <sbsiddha@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Juergen Gross <jgross@suse.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Dave Airlie <airlied@redhat.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Antonino Daplas <adaplas@gmail.com> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Stefan Bader <stefan.bader@canonical.com> Cc: konrad.wilk@oracle.com Cc: ville.syrjala@linux.intel.com Cc: david.vrabel@citrix.com Cc: jbeulich@suse.com Cc: Roger Pau Monné <roger.pau@citrix.com> Cc: infinipath@intel.com Cc: linux-rdma@vger.kernel.org Cc: linux-fbdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: xen-devel@lists.xensource.com Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05IB/qib: add acounting for MTRRLuis R. Rodriguez
There is no good reason not to, we eventually delete it as well. Cc: Toshi Kani <toshi.kani@hp.com> Cc: Suresh Siddha <sbsiddha@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Juergen Gross <jgross@suse.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dave Airlie <airlied@redhat.com> Cc: Antonino Daplas <adaplas@gmail.com> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Mike Marciniszyn <infinipath@intel.com> Cc: Roland Dreier <roland@kernel.org> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Cc: linux-rdma@vger.kernel.org Cc: linux-fbdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05IB/core: dma unmap optimizationsGuy Shapiro
While unmapping an ODP writable page, the dirty bit of the page is set. In order to do so, the head of the compound page is found. Currently, the compound head is found even on non-writable pages, where it is never used, leading to unnecessary cpu barrier that impacts performance. This patch moves the search for the compound head to be done only when needed. Signed-off-by: Guy Shapiro <guysh@mellanox.com> Acked-by: Shachar Raindel <raindel@mellanox.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05IB/core: dma map/unmap locking optimizationsGuy Shapiro
Currently, while mapping or unmapping pages for ODP, the umem mutex is locked and unlocked once for each page. Such lock/unlock operation take few tens to hundreds of nsecs. This makes a significant impact when mapping or unmapping few MBs of memory. To avoid this, the mutex should be locked only once per operation, and not per page. Signed-off-by: Guy Shapiro <guysh@mellanox.com> Acked-by: Shachar Raindel <raindel@mellanox.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05RDMA/cxgb4: Report the actual address of the remote connecting peerSteve Wise
Get the actual (non-mapped) ip/tcp address of the connecting peer from the port mapper Also setup the passive side endpoint to correctly display the actual and mapped addresses for the new connection. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05RDMA/nes: Report the actual address of the remote connecting peerTatyana Nikolova
Get the actual (non-mapped) ip/tcp address of the connecting peer from the port mapper and report the address info to the user space application at the time of connection establishment Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05RDMA/core: Enable the iWarp Port Mapper to provide the actual address of the ↵Tatyana Nikolova
connecting peer to its clients Add functionality to enable the port mapper on the passive side to provide to its clients the actual (non-mapped) ip/tcp address information of the connecting peer 1) Adding remote_info_cb() to process the address info of the connecting peer The address info is provided by the user space port mapper service when the connection is initiated by the peer 2) Adding a hash list to store the remote address info 3) Adding functionality to add/remove the remote address info After the info has been provided to the port mapper client, it is removed from the hash list Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05iw_cxgb4: enforce qp/cq id requirementsHariprasad S
Currently the iw_cxgb4 implementation requires the qp and cq qid densities to match as well as the qp and cq id ranges. So fail a device open if the device configuration doesn't meet the requirements. The reason for these restictions has to do with the fact that IQ qid X has a UGTS register in the same bar2 page as EQ qid X. Thus both qids need to be allocated to the same user process for security reasons. The logic that does this (the qpid allocator in iw_cxgb4/resource.c) handles this but requires the above restrictions. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05iw_cxgb4: use BAR2 GTS register for T5 kernel mode CQsHariprasad S
For T5, we must not use the kdb/kgts registers, in order avoid db drops under extreme loads. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05iw_cxgb4: 32b platform fixesHariprasad S
- get_dma_mr() was using ~0UL which is should be ~0ULL. This causes the DMA MR to get setup incorrectly in hardware. - wr_log_show() needed a 64b divide function div64_u64() instead of doing division directly. - fixed warnings about recasting a pointer to a u64 Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05iw_cxgb4: Cleanup register defines/MACROSHariprasad S
Cleanup macros and register defines for consistency Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05RDMA/CMA: Canonize IPv4 on IPV6 sockets properlyJason Gunthorpe
When accepting a new IPv4 connect to an IPv6 socket, the CMA tries to canonize the address family to IPv4, but does not properly process the listening sockaddr to get the listening port, and does not properly set the address family of the canonized sockaddr. Fixes: e51060f08a61 ("IB: IP address based RDMA connection manager") Cc: <stable@vger.kernel.org> Reported-By: Yotam Kenneth <yotamke@mellanox.com> Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Tested-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05x86/spinlocks: Fix regression in spinlock contention detectionTahsin Erdogan
A spinlock is regarded as contended when there is at least one waiter. Currently, the code that checks whether there are any waiters rely on tail value being greater than head. However, this is not true if tail reaches the max value and wraps back to zero, so arch_spin_is_contended() incorrectly returns 0 (not contended) when tail is smaller than head. The original code (before regression) handled this case by casting the (tail - head) to an unsigned value. This change simply restores that behavior. Fixes: d6abfdb20223 ("x86/spinlocks/paravirt: Fix memory corruption on unlock") Signed-off-by: Tahsin Erdogan <tahsin@google.com> Cc: peterz@infradead.org Cc: Waiman.Long@hp.com Cc: borntraeger@de.ibm.com Cc: oleg@redhat.com Cc: raghavendra.kt@linux.vnet.ibm.com Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1430799331-20445-1-git-send-email-tahsin@google.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-05-04perf tools: Hit all build ids when AUX area tracingAdrian Hunter
We need to include all buildids when a perf.data file contains AUX area tracing data because we do not decode the trace for that purpose because it would take too long. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1430404667-10593-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-04perf tools: Add AUX area tracing indexAdrian Hunter
Add an index of AUX area tracing events within a perf.data file. perf record uses a special user event PERF_RECORD_FINISHED_ROUND to enable sorting of events in chunks instead of having to sort all events altogether. AUX area tracing events contain data that can span back to the very beginning of the recording period. i.e. they do not obey the rules of PERF_RECORD_FINISHED_ROUND. By adding an index, AUX area tracing events can be found in advance and the PERF_RECORD_FINISHED_ROUND approach works as usual. The index is recorded with the auxtrace feature in the perf.data file. A session reads the index but does not process it. An AUX area decoder can queue all the AUX area data in advance using auxtrace_queues__process_index() or otherwise process the index in some custom manner. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1430404667-10593-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-04perf report: Fix placement of itrace option in documentationAdrian Hunter
Unwittingly the itrace options for perf report ended up below the Overhead Calculation section. Move it back with the other options. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1430404667-10593-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-04f2fs: fix wrong error hanlder in f2fs_follow_linkJaegeuk Kim
The page_follow_link_light returns NULL and its error pointer was remained in nd->path. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-05-04Revert "f2fs: enhance multi-threads performance"Jaegeuk Kim
This reports performance regression by Yuanhan Liu. The basic idea was to reduce one-point mutex, but it turns out this causes another contention like context swithes. https://lkml.org/lkml/2015/4/21/11 Until finishing the analysis on this issue, I'd like to revert this for a while. This reverts commit 78373b7319abdf15050af5b1632c4c8b8b398f33.
2015-05-04perf kmem: Add kmem.default config optionNamhyung Kim
Currently perf kmem command will select --slab if neither --slab nor --page is given for backward compatibility. Add kmem.default config option to select the default value ('page' or 'slab'). # cat ~/.perfconfig [kmem] default = page # perf kmem stat SUMMARY (page allocator) ======================== Total allocation requests : 1,518 [ 6,096 KB ] Total free requests : 1,431 [ 5,748 KB ] Total alloc+freed requests : 1,330 [ 5,344 KB ] Total alloc-only requests : 188 [ 752 KB ] Total free-only requests : 101 [ 404 KB ] Total allocation failures : 0 [ 0 KB ] ... Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Pekka Enberg <penberg@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/1429592107-1807-6-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-04perf kmem: Print gfp flags in human readable stringNamhyung Kim
Save libtraceevent output and print it in the header. # perf kmem stat --page --caller # # GFP flags # --------- # 00000010: NI: GFP_NOIO # 000000d0: K: GFP_KERNEL # 00000200: NWR: GFP_NOWARN # 000084d0: K|R|Z: GFP_KERNEL|GFP_REPEAT|GFP_ZERO # 000200d2: HU: GFP_HIGHUSER # 000200da: HUM: GFP_HIGHUSER_MOVABLE # 000280da: HUM|Z: GFP_HIGHUSER_MOVABLE|GFP_ZERO # 002084d0: K|R|Z|NT: GFP_KERNEL|GFP_REPEAT|GFP_ZERO|GFP_NOTRACK # 0102005a: NF|HW|M: GFP_NOFS|GFP_HARDWALL|GFP_MOVABLE --------------------------------------------------------------------------------------------------------- Total alloc (KB) | Hits | Order | Mig.type | GFP flags | Callsite --------------------------------------------------------------------------------------------------------- 60 | 15 | 0 | UNMOVABL | K|R|Z|NT | pte_alloc_one 40 | 10 | 0 | MOVABLE | HUM|Z | handle_mm_fault 24 | 6 | 0 | MOVABLE | HUM | do_wp_page 24 | 6 | 0 | UNMOVABL | K | __pollwait ... Requested-by: Joonsoo Kim <js1304@gmail.com> Suggested-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Pekka Enberg <penberg@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/1429592107-1807-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-04perf kmem: Add --live option for current allocation statNamhyung Kim
Currently 'perf kmem stat --page' shows total (page) allocation stat by default, but sometimes one might want to see live (total alloc-only) requests/pages only. The new --live option does this by subtracting freed allocation from the stat. E.g.: # perf kmem stat --page SUMMARY (page allocator) ======================== Total allocation requests : 988,858 [ 4,045,368 KB ] Total free requests : 886,484 [ 3,624,996 KB ] Total alloc+freed requests : 885,969 [ 3,622,628 KB ] Total alloc-only requests : 102,889 [ 422,740 KB ] Total free-only requests : 515 [ 2,368 KB ] Total allocation failures : 0 [ 0 KB ] Order Unmovable Reclaimable Movable Reserved CMA/Isolated ----- ------------ ------------ ------------ ------------ ------------ 0 172,173 3,083 806,686 . . 1 284 . . . . 2 6,124 58 . . . 3 114 335 . . . 4 . . . . . 5 . . . . . 6 . . . . . 7 . . . . . 8 . . . . . 9 . . 1 . . 10 . . . . . # perf kmem stat --page --live SUMMARY (page allocator) ======================== Total allocation requests : 988,858 [ 4,045,368 KB ] Total free requests : 886,484 [ 3,624,996 KB ] Total alloc+freed requests : 885,969 [ 3,622,628 KB ] Total alloc-only requests : 102,889 [ 422,740 KB ] Total free-only requests : 515 [ 2,368 KB ] Total allocation failures : 0 [ 0 KB ] Order Unmovable Reclaimable Movable Reserved CMA/Isolated ----- ------------ ------------ ------------ ------------ ------------ 0 2,214 3,025 97,156 . . 1 59 . . . . 2 19 58 . . . 3 23 335 . . . 4 . . . . . 5 . . . . . 6 . . . . . 7 . . . . . 8 . . . . . 9 . . . . . 10 . . . . . # Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Pekka Enberg <penberg@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/1429592107-1807-4-git-send-email-namhyung@kernel.org [ Added examples to the changeset log ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-04perf kmem: Support sort keys on page analysisNamhyung Kim
Add new sort keys for page: page, order, migtype, gfp - existing 'bytes', 'hit' and 'callsite' sort keys also work for page. Note that -s/--sort option should be preceded by either of --slab or --page option to determine where the sort keys applies. Now it properly groups and sorts allocation stats - so same page/caller with different order/migtype/gfp will be printed on a different line. # perf kmem stat --page --caller -l 10 -s order,hit ----------------------------------------------------------------------------- Total alloc (KB) | Hits | Order | Mig.type | GFP flags | Callsite ----------------------------------------------------------------------------- 64 | 4 | 2 | RECLAIM | 00285250 | new_slab 50,144 | 12,536 | 0 | MOVABLE | 0102005a | __page_cache_alloc 52 | 13 | 0 | UNMOVABL | 002084d0 | pte_alloc_one 40 | 10 | 0 | MOVABLE | 000280da | handle_mm_fault 28 | 7 | 0 | UNMOVABL | 000000d0 | __pollwait 20 | 5 | 0 | MOVABLE | 000200da | do_wp_page 20 | 5 | 0 | MOVABLE | 000200da | do_cow_fault 16 | 4 | 0 | UNMOVABL | 00000200 | __tlb_remove_page 16 | 4 | 0 | UNMOVABL | 000084d0 | __pmd_alloc 8 | 2 | 0 | UNMOVABL | 000084d0 | __pud_alloc ... | ... | ... | ... | ... | ... ----------------------------------------------------------------------------- Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Pekka Enberg <penberg@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/1429592107-1807-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-04perf kmem: Implement stat --page --callerNamhyung Kim
It is 'perf kmem' support caller statistics for page. Unlike slab case, the tracepoints in page allocator don't provide callsite info. So it records with callchain and extracts callsite info. Note that the callchain contains several memory allocation functions which has no meaning for users. So skip those functions to get proper callsites. I used following regex pattern to skip the allocator functions: ^_?_?(alloc|get_free|get_zeroed)_pages? This gave me a following list of functions: # perf kmem record --page sleep 3 # perf kmem stat --page -v ... alloc func: __get_free_pages alloc func: get_zeroed_page alloc func: alloc_pages_exact alloc func: __alloc_pages_direct_compact alloc func: __alloc_pages_nodemask alloc func: alloc_page_interleave alloc func: alloc_pages_current alloc func: alloc_pages_vma alloc func: alloc_page_buffers alloc func: alloc_pages_exact_nid ... The output looks mostly same as --alloc (I also added callsite column to that) but groups entries by callsite. Currently, the order, migrate type and GFP flag info is for the last allocation and not guaranteed to be same for all allocations from the callsite. --------------------------------------------------------------------------------------------- Total_alloc (KB) | Hits | Order | Mig.type | GFP flags | Callsite --------------------------------------------------------------------------------------------- 1,064 | 266 | 0 | UNMOVABL | 000000d0 | __pollwait 52 | 13 | 0 | UNMOVABL | 002084d0 | pte_alloc_one 44 | 11 | 0 | MOVABLE | 000280da | handle_mm_fault 20 | 5 | 0 | MOVABLE | 000200da | do_cow_fault 20 | 5 | 0 | MOVABLE | 000200da | do_wp_page 16 | 4 | 0 | UNMOVABL | 000084d0 | __pmd_alloc 16 | 4 | 0 | UNMOVABL | 00000200 | __tlb_remove_page 12 | 3 | 0 | UNMOVABL | 000084d0 | __pud_alloc 8 | 2 | 0 | UNMOVABL | 00000010 | bio_copy_user_iov 4 | 1 | 0 | UNMOVABL | 000200d2 | pipe_write 4 | 1 | 0 | MOVABLE | 000280da | do_wp_page 4 | 1 | 0 | UNMOVABL | 002084d0 | pgd_alloc --------------------------------------------------------------------------------------------- Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Pekka Enberg <penberg@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/1429592107-1807-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-04perf probe: Accept filter argument for --listMasami Hiramatsu
Currently, perf-probe --list option ignores given event filter. ---- # ./perf probe -l vfs\* probe:vfs_read (on vfs_read@ksrc/linux-3/fs/read_write.c) probe_libc:malloc (on __libc_malloc@malloc/malloc.c in /usr/lib64/libc-2.17.so) ---- This changes --list option to accept the event filter argument as below. ---- # ./perf probe -l vfs\* probe:vfs_read (on vfs_read@ksrc/linux-3/fs/read_write.c) # ./perf probe -l \*libc:\* probe_libc:malloc (on __libc_malloc@malloc/malloc.c in /usr/lib64/libc-2.17.so) ---- Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20150424094750.23967.53868.stgit@localhost.localdomain Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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