aboutsummaryrefslogtreecommitdiffstats
path: root/tools/perf/scripts/python/check-perf-trace.py (unfollow)
AgeCommit message (Collapse)AuthorFilesLines
2014-07-03xen/manage: fix potential deadlock when resuming the consoleDavid Vrabel1-1/+4
Calling xen_console_resume() in xen_suspend() causes a warning because it locks irq_mapping_update_lock (a mutex) and this may sleep. If a userspace process is using the evtchn device then this mutex may be locked at the point of the stop_machine() call and xen_console_resume() would then deadlock. Resuming the console after stop_machine() returns avoids this deadlock. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: <stable@vger.kernel.org>
2014-06-18xen/grant-table: fix suspend for non-PV guestsDavid Vrabel1-1/+2
Commit aa8532c32216ae07c3813b9aeb774517878a7573 (xen: refactor suspend pre/post hooks) broke resuming PVHVM (auto-translated physmap) guests. The gnttab_suspend() would clear the mapping for the grant table frames, but the ->unmap_frames() call is only applicable to PV guests. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2014-06-18x86/xen: no need to explicitly register an NMI callbackDavid Vrabel1-8/+1
Remove xen_enable_nmi() to fix a 64-bit guest crash when registering the NMI callback on Xen 3.1 and earlier. It's not needed since the NMI callback is set by a set_trap_table hypercall (in xen_load_idt() or xen_write_idt_entry()). It's also broken since it only set the current VCPU's callback. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reported-by: Vitaly Kuznetsov <vkuznets@redhat.com> Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
2014-06-05Revert "xen/pvh: Update E820 to work with PVH (v2)"David Vrabel1-20/+2
This reverts commit 9103bb0f8240b2a55aac3ff7ecba9c7dcf66b08b. Now than xen_memory_setup() is not called for auto-translated guests, we can remove this commit. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Acked-by: Roger Pau Monné <roger.pau@citrix.com> Tested-by: Roger Pau Monné <roger.pau@citrix.com>
2014-06-05x86/xen: fix memory setup for PVH dom0David Vrabel3-1/+34
Since af06d66ee32b (x86: fix setup of PVH Dom0 memory map) in Xen, PVH dom0 need only use the memory memory provided by Xen which has already setup all the correct holes. xen_memory_setup() then ends up being trivial for a PVH guest so introduce a new function (xen_auto_xlated_memory_setup()). Signed-off-by: David Vrabel <david.vrabel@citrix.com> Acked-by: Roger Pau Monné <roger.pau@citrix.com> Tested-by: Roger Pau Monné <roger.pau@citrix.com>
2014-05-27x86/xen: map foreign pfns for autotranslated guestsMukesh Rathor1-3/+118
When running as a dom0 in PVH mode, foreign pfns that are accessed must be added to our p2m which is managed by xen. This is done via XENMEM_add_to_physmap_range hypercall. This is needed for toolstack building guests and mapping guest memory, xentrace mapping xen pages, etc. Signed-off-by: Mukesh Rathor <mukesh.rathor@oracle.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2014-05-23xen-acpi-processor: Don't display errors when we get -ENOSYSKonrad Rzeszutek Wilk1-2/+2
which is a perfectly legal error. This can be triggered if the user has booted Xen with the no-cpuidle parameter. Reported-by-and-Tested-by: Don Slutz <dslutz@verizon.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2014-05-23xen/pciback: Document the entry points for 'pcistub_put_pci_dev'Konrad Rzeszutek Wilk1-0/+9
which are quite a few. It should be evident that dealing with that many options is a bit complex. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
2014-05-23xen/pciback: Document when the 'unbind' and 'bind' functions are called.Konrad Rzeszutek Wilk1-0/+4
And also mention that you cannot do any pci_reset_function, pci_reset_slot, or such calls. This is because they take the same lock as SysFS does - and we would end up with a dead-lock if we call those functions. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
2014-05-23xen-pciback: Document when we FLR an PCI device.Konrad Rzeszutek Wilk2-0/+6
When the toolstack wants us to drop or add an PCI device it changes the XenBus state to Configuring - and as result of that we find out which devices we should still be exporting out and which ones not. For the ones we don't need anymore we need to do an PCI reset so that it is ready for the next guest. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
2014-05-23xen-pciback: First reset, then free.Konrad Rzeszutek Wilk1-1/+1
We were doing the operations of freeing and reset in the wrong order. Granted nothing broke because the reset functions just set bar->which = 0. But nonethless this was incorrect. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
2014-05-23xen-pciback: Cleanup up pcistub_put_pci_devKonrad Rzeszutek Wilk1-5/+5
We are using 'psdev->dev','found_psdev->dev', and 'dev' at the same time - and they all point to the same structure. To keep it straight lets just use one - 'dev'. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
2014-05-15x86/xen: do not use _PAGE_IOMAP in xen_remap_domain_mfn_range()David Vrabel1-3/+1
_PAGE_IOMAP is used in xen_remap_domain_mfn_range() to prevent the pfn_pte() call in remap_area_mfn_pte_fn() from using the p2m to translate the MFN. If mfn_pte() is used instead, the p2m look up is avoided and the use of _PAGE_IOMAP is no longer needed. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2014-05-15x86/xen: set regions above the end of RAM as 1:1David Vrabel2-1/+10
PCI devices may have BARs located above the end of RAM so mark such frames as identity frames in the p2m (instead of the default of missing). PFNs outside the p2m (above MAX_P2M_PFN) are also considered to be identity frames for the same reason. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2014-05-15x86/xen: only warn once if bad MFNs are found during setupDavid Vrabel1-3/+3
In xen_add_extra_mem(), if the WARN() checks for bad MFNs trigger it is likely that they will trigger at lot, spamming the log. Use WARN_ONCE() instead. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2014-05-15x86/xen: compactly store large identity ranges in the p2mDavid Vrabel1-50/+105
Large (multi-GB) identity ranges currently require a unique middle page (filled with p2m_identity entries) per 1 GB region. Similar to the common p2m_mid_missing middle page for large missing regions, introduce a p2m_mid_identity page (filled with p2m_identity entries) which can be used instead. set_phys_range_identity() thus only needs to allocate new middle pages at the beginning and end of the range. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2014-05-15x86/xen: fix set_phys_range_identity() if pfn_e > MAX_P2M_PFNDavid Vrabel1-1/+4
Allow set_phys_range_identity() to work with a range that overlaps MAX_P2M_PFN by clamping pfn_e to MAX_P2M_PFN. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2014-05-15x86/xen: rename early_p2m_alloc() and early_p2m_alloc_middle()David Vrabel1-6/+6
early_p2m_alloc_middle() allocates a new leaf page and early_p2m_alloc() allocates a new middle page. This is confusing. Swap the names so they match what the functions actually do. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2014-05-15xen/x86: set panic notifier priority to minimumRadim Krčmář1-0/+1
Execution is not going to continue after telling Xen about the crash. Let other panic notifiers run by postponing the final hypercall as much as possible. Signed-off-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2014-05-12arm,arm64/xen: introduce HYPERVISOR_suspend()Stefano Stabellini2-0/+18
Introduce HYPERVISOR_suspend() and a few additional empty stubs for Xen arch specific functions called by drivers/xen/manage.c. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2014-05-12xen: refactor suspend pre/post hooksDavid Vrabel4-45/+29
New architectures currently have to provide implementations of 5 different functions: xen_arch_pre_suspend(), xen_arch_post_suspend(), xen_arch_hvm_post_suspend(), xen_mm_pin_all(), and xen_mm_unpin_all(). Refactor the suspend code to only require xen_arch_pre_suspend() and xen_arch_post_suspend(). Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2014-05-09arm: xen: export HYPERVISOR_multicall to modules.Ian Campbell1-0/+1
"arm: xen: implement multicall hypercall support." forgot to do this. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2014-05-08arm64: introduce virt_to_pfnStefano Stabellini1-0/+1
virt_to_pfn has been defined in arch/arm/include/asm/memory.h by commit e26a9e0 "ARM: Better virt_to_page() handling" and Xen has come to rely on it. Introduce virt_to_pfn on arm64 too. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
2014-04-24arm/xen: Remove definiition of virt_to_pfn in asm/xen/page.hJulien Grall1-1/+0
virt_to_pfn has been defined in asm/memory.h by the commit e26a9e0 "ARM: Better virt_to_page() handling" This will result of a compilation warning when CONFIG_XEN is enabled. arch/arm/include/asm/xen/page.h:80:0: warning: "virt_to_pfn" redefined [enabled by default] #define virt_to_pfn(v) (PFN_DOWN(__pa(v))) ^ In file included from arch/arm/include/asm/page.h:163:0, from arch/arm/include/asm/xen/page.h:4, from include/xen/page.h:4, from arch/arm/xen/grant-table.c:33: The definition in memory.h is nearly the same (it directly expand PFN_DOWN), so we can safely drop virt_to_pfn in xen include. Signed-off-by: Julien Grall <julien.grall@linaro.org> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2014-04-24arm: xen: implement multicall hypercall support.Ian Campbell7-9/+12
As part of this make the usual change to xen_ulong_t in place of unsigned long. This change has no impact on x86. The Linux definition of struct multicall_entry.result differs from the Xen definition, I think for good reasons, and used a long rather than an unsigned long. Therefore introduce a xen_long_t, which is a long on x86 architectures and a signed 64-bit integer on ARM. Use uint32_t nr_calls on x86 for consistency with the ARM definition. Build tested on amd64 and i386 builds. Runtime tested on ARM. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2014-04-22Input: elantech - add support for newer elantech touchpadsJordan Rife1-0/+1
Newer elantech touchpads are not recognized by the current driver, since it fails to detect their firmware version number. This prevents more advanced touchpad features from being usable such as two-finger scrolling. This patch allows newer touchpads to be detected and be fully functional. Tested on Sony Vaio SVF13N17PXB. Signed-off-by: Jordan Rife <jrife0@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-04-22Input: soc_button_array - fix a crash during rmmodLejun Zhu1-0/+1
When the system has zero or one button available, trying to rmmod soc_button_array will cause crash. Fix this by properly handling -ENODEV in probe(). Signed-off-by: Lejun Zhu <lejun.zhu@linux.intel.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-04-22mm: make fixup_user_fault() check the vma access rights tooLinus Torvalds1-0/+5
fixup_user_fault() is used by the futex code when the direct user access fails, and the futex code wants it to either map in the page in a usable form or return an error. It relied on handle_mm_fault() to map the page, and correctly checked the error return from that, but while that does map the page, it doesn't actually guarantee that the page will be mapped with sufficient permissions to be then accessed. So do the appropriate tests of the vma access rights by hand. [ Side note: arguably handle_mm_fault() could just do that itself, but we have traditionally done it in the caller, because some callers - notably get_user_pages() - have been able to access pages even when they are mapped with PROT_NONE. Maybe we should re-visit that design decision, but in the meantime this is the minimal patch. ] Found by Dave Jones running his trinity tool. Reported-by: Dave Jones <davej@redhat.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-22drm/radeon: don't allow runpm=1 on systems with out ATPXAlex Deucher1-5/+3
vgaswitcheroo and the ATPX ACPI methods are required to power down the dGPU. bug: https://bugzilla.kernel.org/show_bug.cgi?id=73901 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2014-04-22drm/radeon: fix ATPX detection on non-VGA GPUsAlex Deucher1-0/+7
Some newer PX laptops have the pci device class set to DISPLAY_OTHER rather than DISPLAY_VGA. This properly detects ATPX on those laptops. Based on a patch from: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Cc: airlied@gmail.com
2014-04-22drm/radeon/pm: don't walk the crtc list before it has been initialized (v2)Alex Deucher2-28/+35
Avoids a crash in certain cases when thermal irqs are generated before the display structures have been initialized. v2: fix the vblank and vrefresh helpers as well bug: https://bugzilla.kernel.org/show_bug.cgi?id=73931 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2014-04-22drm/radeon: properly unregister hwmon interface (v2)Alex Deucher1-6/+15
Need to properly unregister the hwmon device on driver unload. v2: minor clean up bug: https://bugzilla.kernel.org/show_bug.cgi?id=73931 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2014-04-22drm/radeon: fix count in cik_sdma_ring_test()Alex Deucher1-1/+1
Should be 5 rather than 4. Noticed-by: Mathias Fröhlich <Mathias.Froehlich@gmx.net> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Christian König <christian.koenig@amd.com>
2014-04-22drm/radeon/aux: fix hpd assignment for aux busAlex Deucher1-0/+1
The hpd (hot plug detect) pin assignment got lost in the conversion to to the common i2c over aux code. Without this information, aux transactions do not work properly. Fixes DP failures. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com>
2014-04-20um: Memory corruption on startupAnton Ivanov3-0/+8
The reverse case of this race (you must msync before read) is well known. This is the not so common one. It can be triggered only on systems which do a lot of task switching and only at UML startup. If you are starting 200+ UMLs ~ 0.5% will always die without this fix. Signed-off-by: Anton Ivanov <antivano@cisco.com> [rw: minor whitespace fixes] Signed-off-by: Richard Weinberger <richard@nod.at>
2014-04-20um: Missing pipe handlingAnton Ivanov1-0/+1
UML does not handle sigpipe. As a result when running it under expect or redirecting the IO from the console to an external program it will crash if the program stops or exits. Signed-off-by: Anton Ivanov <antivano@cisco.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2014-04-20uml: Simplify tempdir logic.Tristan Schmelcher1-297/+75
Inferring the mount hierarchy correctly from /proc/mounts is hard when MS_MOVE may have been used, and the previous code did it wrongly. This change simplifies the logic to only require that /dev/shm be _on_ tmpfs (which can be checked trivially with statfs) rather than that it be a _mountpoint_ of tmpfs, since there isn't a compelling reason to be that strict. We also now check for tmpfs on whatever directory we ultimately use so that the user is better informed. This change also moves the more standard TMPDIR environment variable check ahead of the others. Applies to 3.12. Signed-off-by: Tristan Schmelcher <tschmelcher@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2014-04-20Linux 3.15-rc2Linus Torvalds1-1/+1
2014-04-20drm/radeon: improve PLL limit handling in post div calculationChristian König1-26/+51
This improves the PLL parameters when we work at the limits of the allowed ranges. Signed-off-by: Christian König <christian.koenig@amd.com>
2014-04-19Input: synaptics - add min/max quirk for ThinkPad T431s, L440, L540, S1 Yoga and X1Hans de Goede1-0/+42
We expect that all the Haswell series will need such quirks, sigh. The T431s seems to be T430 hardware in a T440s case, using the T440s touchpad, with the same min/max issue. The X1 Carbon 3rd generation name says 2nd while it is a 3rd generation. The X1 and T431s share a PnPID with the T540p, but the reported ranges are closer to those of the T440s. HdG: Squashed 5 quirk patches into one. T431s + L440 + L540 are written by me, S1 Yoga and X1 are written by Benjamin Tissoires. Hdg: Standardized S1 Yoga and X1 values, Yoga uses the same touchpad as the X240, X1 uses the same touchpad as the T440. Cc: stable@vger.kernel.org Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-04-19Input: synaptics - report INPUT_PROP_TOPBUTTONPAD propertyHans de Goede1-2/+53
Check PNP ID of the PS/2 AUX port and report INPUT_PROP_TOPBUTTONPAD property for for touchpads with top button areas. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-04-19Input: Add INPUT_PROP_TOPBUTTONPAD device propertyHans de Goede1-0/+1
On some newer laptops with a trackpoint the physical buttons for the trackpoint have been removed to allow for a larger touchpad. On these laptops the buttonpad has clearly marked areas on the top which are to be used as trackpad buttons. Users of the event device-node need to know about this, so that they can properly interpret BTN_LEFT events as being a left / right / middle click depending on where on the button pad the clicking finger is. This commits adds a INPUT_PROP_TOPBUTTONPAD device property which drivers for such buttonpads will use to signal to the user that this buttonpad not only has the normal bottom button area, but also a top button area. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-04-19Input: i8042 - add firmware_id supportHans de Goede2-0/+21
Fill in the new serio firmware_id sysfs attribute for pnp instantiated 8042 serio ports. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-04-19Input: serio - add firmware_id sysfs attributeHans de Goede2-0/+15
serio devices exposed via platform firmware interfaces such as ACPI may provide additional identifying information of use to userspace. We don't associate the serio devices with the firmware device (we don't set it as parent), so there's no way for userspace to make use of this information. We cannot change the parent for serio devices instantiated though a firmware interface as that would break suspend / resume ordering. Therefore this patch adds a new firmware_id sysfs attribute so that userspace can get a string from there with any additional identifying information the firmware interface may provide. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-04-20perf tools: Improve error reportingAdrien BAK2-2/+9
In the current version, when using perf record, if something goes wrong in tools/perf/builtin-record.c:375 session = perf_session__new(file, false, NULL); The error message: "Not enough memory for reading per file header" is issued. This error message seems to be outdated and is not very helpful. This patch proposes to replace this error message by "Perf session creation failed" I believe this issue has been brought to lkml: https://lkml.org/lkml/2014/2/24/458 although this patch only tackles a (small) part of the issue. Additionnaly, this patch improves error reporting in tools/perf/util/data.c open_file_write. Currently, if the call to open fails, the user is unaware of it. This patch logs the error, before returning the error code to the caller. Reported-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Adrien BAK <adrien.bak@metascale.org> Link: http://lkml.kernel.org/r/1397786443.3093.4.camel@beast [ Reorganize the changelog into paragraphs ] [ Added empty line after fd declaration in open_file_write ] Signed-off-by: Jiri Olsa <jolsa@redhat.com>
2014-04-20perf tools: Adjust symbols in VDSOVladimir Nikulichev1-0/+2
pert-report doesn't resolve function names in VDSO: $ perf report --stdio -g flat,0.0,15,callee --sort pid ... 8.76% 0x7fff6b1fe861 __gettimeofday ACE_OS::gettimeofday() ... In this case symbol values should be adjusted the same way as for executables, relocatable objects and prelinked libraries. After fix: $ perf report --stdio -g flat,0.0,15,callee --sort pid ... 8.76% __vdso_gettimeofday __gettimeofday ACE_OS::gettimeofday() Signed-off-by: Vladimir Nikulichev <nvs@tbricks.com> Tested-by: Namhyung Kim <namhyung@kernel.org> Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/969812.163009436-sendEmail@nvs Signed-off-by: Jiri Olsa <jolsa@redhat.com>
2014-04-20perf kvm: Fix 'Min time' counting in report commandAlexander Yarygin1-0/+1
Every event in the perf-kvm has a 'stats' structure, which contains max/min/average/etc times of handling this event. The problem is that the 'perf-kvm stat report' command always shows that 'min time' is 0us for every event. Example: # perf kvm stat report Analyze events for all VCPUs: VM-EXIT Samples Samples% Time% Min Time Max Time Avg time [..] 0xB2 MSCH 12 0.07% 0.00% 0us 8us 7.31us ( +- 2.11% ) 0xB2 CHSC 12 0.07% 0.00% 0us 18us 9.39us ( +- 9.49% ) 0xB2 STPX 8 0.05% 0.00% 0us 2us 1.88us ( +- 7.18% ) 0xB2 STSI 7 0.04% 0.00% 0us 44us 16.49us ( +- 38.20% ) [..] This happens because the 'stats' structure is not initialized and stats->min equals to 0. Lets initialize the structure for every event after its allocation using init_stats() function. This initializes stats->min to -1 and makes 'Min time' statistics counting work: # perf kvm stat report Analyze events for all VCPUs: VM-EXIT Samples Samples% Time% Min Time Max Time Avg time [..] 0xB2 MSCH 12 0.07% 0.00% 6us 8us 7.31us ( +- 2.11% ) 0xB2 CHSC 12 0.07% 0.00% 7us 18us 9.39us ( +- 9.49% ) 0xB2 STPX 8 0.05% 0.00% 1us 2us 1.88us ( +- 7.18% ) 0xB2 STSI 7 0.04% 0.00% 1us 44us 16.49us ( +- 38.20% ) [..] Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Ahern <dsahern@gmail.com> Link: http://lkml.kernel.org/r/1397053319-2130-3-git-send-email-borntraeger@de.ibm.com [ Fixing the perf examples changelog output ] Signed-off-by: Jiri Olsa <jolsa@redhat.com>
2014-04-19Input: wacom - handle 1024 pressure levels in wacom_tpc_penJason Gerecke1-1/+1
Some tablet PC sensors (e.g. the 0xEC found in the Thinkpad Yoga) report more than 256 pressure levels and will experience wraparound unless the full range is read. Signed-off-by: Jason Gerecke <killertofu@gmail.com> Tested-by: Aaron Skomra <Aaron.Skomra@wacom.com> Reviewed-by: Carl Worth <cworth@cworth.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-04-19Input: wacom - references to 'wacom->data' should use 'unsigned char*'Jason Gerecke1-18/+9
'wacom->data' contains raw binary data and can lead to unexpected behavior if a byte under examination happens to have its MSB set. Signed-off-by: Jason Gerecke <killertofu@gmail.com> Tested-by: Aaron Skomra <Aaron.Skomra@wacom.com> Reviewed-by: Carl Worth <cworth@cworth.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-04-19Input: wacom - override 'pressure_max' with value from HID_USAGE_PRESSUREJason Gerecke1-0/+9
The 0xEC sensor is used in multiple tablet PCs and curiously has versions that report 256 levels of pressure (Samsung Slate 7) as well as versions that report 1024 levels (Lenovo Thinkpad Yoga). To allow both versions to work properly, we allow the value of HID_USAGE_PRESSURE reported to override pressure_max. Signed-off-by: Jason Gerecke <killertofu@gmail.com> Tested-by: Aaron Skomra <Aaron.Skomra@wacom.com> Reviewed-by: Carl Worth <cworth@cworth.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>