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2016-01-08perf unwind: Use find_map function in access_dso_memJiri Olsa1-6/+5
The find_map helper is already there, so let's use it. Also we're going to introduce wider search in following patch, so it'll be easier to make this change on single place. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Noel Grandin <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08perf evlist: Remove perf_evlist__(enable|disable)_event functionsJiri Olsa6-54/+8
Replacing them with perf_evsel__(enable|disable). Signed-off-by: Jiri Olsa <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Noel Grandin <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08perf evlist: Make perf_evlist__open() open evsels with their cpus and ↵Adrian Hunter1-1/+1
threads (like perf record does) 'perf record' uses perf_evsel__open() to open events and passes the evsel->cpus and evsel->threads. Many tests and some tools instead use perf_evlist__open() which passes instead evlist->cpus and evlist->threads. Make perf_evlist__open() follow the 'perf record' behaviour so that a consistent approach is taken. Signed-off-by: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Noel Grandin <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08libata: skip debounce delay on link resumeDanesh Petigara3-1/+4
The link resume logic uses a 200msec delay while debouncing the SControl register. The rationale behind that delay is to accommodate some PHYs that behave badly if their SStatus/ SControl registers are pounded immediately on resume. The Broadcom STB SATA PHY does not seem to have this issue. This patch introduces a new link flag that allows platforms to skip the debounce delay if it isn't needed. Signed-off-by: Danesh Petigara <[email protected]> Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: Tejun Heo <[email protected]>
2016-01-08Merge tag 'omap-for-v4.4/onenand-corruption' of ↵Arnd Bergmann1-5/+9
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes Pull "urgent onenand file system corruption fix for n900" from Tony Lindgren: Last minute urgent pull request to prevent file system corruption on Nokia N900. Looks like we have a GPMC bus timing bug that has gone unnoticed because of bootloader configured registers until few days ago. We are not detecting the onenand clock rate properly unless we have CONFIG_OMAP_GPMC_DEBUG set and this causes onenand corruption that can be easily be reproduced. There seems to be also an additional bug still lurking around for onenand corruption. But that is still being investigated and it does not seem to be GPMC timings related. Meanwhile, it would be good to get this fix into v4.4 to prevent wrong timings from corrupting onenand. * tag 'omap-for-v4.4/onenand-corruption' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP2+: Fix onenand rate detection to avoid filesystem corruption
2016-01-08locks: rename __posix_lock_file to posix_lock_inodeJeff Layton1-5/+6
...a more descriptive name and we can drop the double underscore prefix. Signed-off-by: Jeff Layton <[email protected]> Acked-by: "J. Bruce Fields" <[email protected]>
2016-01-08locks: prink more detail when there are leaked locksJeff Layton1-4/+29
Right now, we just get WARN_ON_ONCE, which is not particularly helpful. Have it dump some info about the locks and the inode to make it easier to track down leaked locks in the future. Signed-off-by: Jeff Layton <[email protected]> Acked-by: "J. Bruce Fields" <[email protected]>
2016-01-08locks: pass inode pointer to locks_free_lock_contextJeff Layton3-4/+6
...so we can print information about it if there are leaked locks. Signed-off-by: Jeff Layton <[email protected]> Acked-by: "J. Bruce Fields" <[email protected]>
2016-01-08locks: sprinkle some tracepoints around the file locking codeJeff Layton2-3/+86
Add some tracepoints around the POSIX locking code. These were useful when tracking down problems when handling the race between setlk and close. Signed-off-by: Jeff Layton <[email protected]> Acked-by: "J. Bruce Fields" <[email protected]>
2016-01-08locks: don't check for race with close when setting OFD lockJeff Layton1-6/+10
We don't clean out OFD locks on close(), so there's no need to check for a race with them here. They'll get cleaned out at the same time that flock locks are. Signed-off-by: Jeff Layton <[email protected]> Acked-by: "J. Bruce Fields" <[email protected]>
2016-01-08ata: ahci_brcmstb: disable DIPM supportDanesh Petigara1-1/+1
The Broadcom STB SATA host controller does not support device initiated power management. Disable support for this feature so the driver never sends SETFEATURES commands to the device to enable/disable DIPM. Signed-off-by: Danesh Petigara <[email protected]> Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: Tejun Heo <[email protected]>
2016-01-08ata: ahci_brcmstb: enable support for ALPMDanesh Petigara1-0/+35
Enable support for ALPM in the host controller's capabilities register. Also adjust the PLL timeout to give it enough time to lock when the port exits slumber mode. tj: minor style updates Signed-off-by: Danesh Petigara <[email protected]> Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: Tejun Heo <[email protected]>
2016-01-08perf report: Show random usage tip on the help lineNamhyung Kim8-1/+58
Currently perf report only shows a help message "For a higher level overview, try: perf report --sort comm,dso" unconditionally (even if the sort keys were used). Add more help tips and show randomly. Load tips from ${prefix}/share/doc/perf-tip/tips.txt file. $ perf report | tail 0.10% swapper [kernel.vmlinux] [k] irq_exit 0.09% swapper [kernel.vmlinux] [k] flush_smp_call_function_queue 0.08% swapper [kernel.vmlinux] [k] native_write_msr_safe 0.03% swapper [kernel.vmlinux] [k] group_sched_in 0.01% perf [kernel.vmlinux] [k] native_write_msr_safe # # (Tip: Search options using a keyword: perf report -h <keyword>) # Signed-off-by: Namhyung Kim <[email protected]> Acked-by: Ingo Molnar <[email protected]> Cc: Andi Kleen <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ Renamed it to perf_tip() and the parameter dirname to dirpath to fix the build on older distros ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08Revert "block: Split bios on chunk boundaries"Jens Axboe1-1/+1
This reverts commit d3805611130af9b911e908af9f67a3f64f4f0914. If we end up splitting on the first segment, we don't adjust the sector count. That results in hitting a BUG() with attempting to split 0 sectors. As this is just a performance issue and not a regression since 4.3 release, let's just rever this change. That gives us more time to test a real fix for 4.5, which would be marked for stable anyway.
2016-01-08perf hists: Export a couple of hist functionsNamhyung Kim2-7/+17
These are necessary for multi threaded sample processing: - hists__get__get_rotate_entries_in() - hists__collapse_insert_entry() - __hists__init() Signed-off-by: Namhyung Kim <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Noel Grandin <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08perf diff: Use perf_hpp__register_sort_field interfaceJiri Olsa1-1/+1
Using perf_hpp__register_sort_field interface instead of directly adding the entry. Signed-off-by: Jiri Olsa <[email protected]> Acked-by: Namhyung Kim <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Noel Grandin <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08perf tools: Add overhead/overhead_children keys defaults via stringJiri Olsa2-12/+39
We currently set 'overhead' and 'overhead_children' as default sort keys within perf_hpp__init function by directly adding into the sort list. This patch adds 'overhead' and 'overhead_children' in text form into sort_keys and let them be added by standard sort dimension interface. We need to eliminate dirrect sort_list additions to be able to add support for hists specific sort keys. Signed-off-by: Jiri Olsa <[email protected]> Acked-by: Namhyung Kim <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Noel Grandin <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08PCI: dra7xx: Mark driver as brokenRichard Cochran1-0/+1
Mark the dra7xx PCI host driver as broken. This driver was first merged in v3.17 and has never worked. Although the driver compiles just fine, it is missing an essential device reset. If the driver is included, the kernel locks up hard shortly after booting, before any console output appears. Signed-off-by: Richard Cochran <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]>
2016-01-08perf tools: Remove list entry from struct sort_entryJiri Olsa1-2/+0
It's no longer needed. Signed-off-by: Jiri Olsa <[email protected]> Acked-by: Namhyung Kim <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Noel Grandin <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08perf tools: Include all tools/lib directory for tags/cscope/TAGS targetsJiri Olsa1-1/+1
Besides lockdep we use all the 'tools/lib' code in perf, so include it completely in tags. Signed-off-by: Jiri Olsa <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Noel Grandin <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08perf script: Align event name properlyJiri Olsa1-2/+22
Adding code to align event names, so we get aligned output in case of multiple events with different names. Before: $ perf script :13757 13757 163918.230829: cpu/mem-snp-none/P: ffff88085f20d010 :13757 13757 163918.230832: cpu/mem-loads,ldlat=30/P: 7f5a5f719f00 :13757 13757 163918.230835: cpu/mem-loads,ldlat=30/P: 7f5a5f719f00 :13758 13758 163918.230838: cpu/mem-snp-none/P: ffff88085f4ad810 :13758 13758 163918.154093: cpu/mem-stores/P: ffff88085bb53f28 :13757 13757 163918.155264: cpu/mem-snp-hitm/P: 601080 ... After: $ perf script :13757 13757 163918.228831: cpu/mem-snp-none/P: ffffffff81a841c0 :13757 13757 163918.228834: cpu/mem-loads,ldlat=30/P: 7f5a5f719f08 :13757 13757 163918.228837: cpu/mem-loads,ldlat=30/P: 7f5a5f719f08 :13758 13758 163918.228837: cpu/mem-snp-none/P: ffff88085f4ad800 :13758 13758 163918.154093: cpu/mem-stores/P: ffff88085bb53f28 :13757 13757 163918.155264: cpu/mem-snp-hitm/P: 601080 ... Signed-off-by: Jiri Olsa <[email protected]> Acked-by: David Ahern <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Noel Grandin <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08perf tools: Add missing headers in perf's MANIFESTWang Nan1-0/+2
These lost headers are found in arm64 cross buildings, failing to build perf using tarballs generated using: $ make perf-targz-src-pkg Signed-off-by: Wang Nan <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Zefan Li <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08perf tools: Do not show trace command if it's not compiled inJiri Olsa2-1/+16
The trace command still appears in help message when you run simple 'perf' command. It's because the generate-cmdlist.sh does not care about the HAVE_LIBAUDIT_SUPPORT dependency of trace command and puts it into generated common_cmds array. Wrapping trace command under HAVE_LIBAUDIT_SUPPORT dependency, which will exclude it from common_cmds array if HAVE_LIBAUDIT_SUPPORT is not set. Signed-off-by: Jiri Olsa <[email protected]> Tested-by: Arnaldo Carvalho de Melo <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Noel Grandin <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08perf report: Change default to use event group viewNamhyung Kim1-0/+1
The event group view feature is to see related events together. To use the group view, events should be recorded as a group with a dedicated syntax of surrounding events by braces (-e '{ evt1, evt2, ... }'). Also 'perf report' also requires the --group option to enable it. However it's almost always beneficial to use the group view to see the group events as it's more expressive. And I think it's more natural to see events together if they are recorded as a group. Thus this patch changes the default value to enable it. If users don't want to see like it and keep the original behavior, they can set the report.group config variable to false and/or use --no-group option in the 'perf report' command line. Requested-by: Ingo Molnar <[email protected]> Signed-off-by: Namhyung Kim <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Taeung Song <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08perf top: Decay periods in callchainsNamhyung Kim3-0/+30
It missed to decay periods in callchains when decaying hist entries. This resulted in more than 100 percent overhead in callchains in the fractal style output. Reported-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Namhyung Kim <[email protected]> Cc: Andi Kleen <[email protected]> Cc: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08drivers: libata-core: Use usleep_range() instead of msleep() for short ↵Anil Veliyankara Madam1-1/+7
sleeps (<20 ms) Since msleep() may sleep longer than intended time for values less than 20ms, this patch allows the use of usleep_range for waits less that 20ms. usleep_range is a finer precision implementation of msleep and is designed to be a drop-in replacement for udelay where a precise sleep/busy-wait is unnecessary. More details can be found at http://lkml.org/lkml/2007/8/3/250 and in Documentation/timers/timers-howto.txt. This change has been done to improve the performace in PIO6 mode which is used by viking flash. Cc: [email protected] Signed-off-by: Anil Veliyankara Madam <[email protected]> Signed-off-by: Shikha Jain <[email protected]> Signed-off-by: Tejun Heo <[email protected]>
2016-01-08tools lib: Move bitmap.[ch] from tools/perf/ to tools/{lib,include}/Arnaldo Carvalho de Melo4-1/+6
So that lib/find_bit.c doesn't requires anything inside tools/perf/ Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: George Spelvin <[email protected] Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Rasmus Villemoes <[email protected]> Cc: Wang Nan <[email protected]> Cc: Yury Norov <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08tools lib: Sync tools/lib/find_bit.c with the kernelArnaldo Carvalho de Melo2-54/+51
Need to move the bitmap.[ch] things from tools/perf/ to tools/lib, will be done in the next patches. Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: George Spelvin <[email protected] Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Rasmus Villemoes <[email protected]> Cc: Wang Nan <[email protected]> Cc: Yury Norov <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08tools lib: Move find_next_bit.c to tools/lib/Arnaldo Carvalho de Melo4-6/+6
The commit that introduced it should've moved it to the same place, plus the 'tools/' prefix, but instead moved it to a bogus tools/lib/util/ directory, being the only file there. Move it to tools/lib/find_bit.c, picking the name for the file where these routines live since: 8f6f19dd5143 ("lib: move find_last_bit to lib/find_next_bit.c") Next step is to make tools/lib/find_bit.c to differ from lib/find_bit.c just in removing what is not used by tools/. Cc: Adrian Hunter <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: David Ahern <[email protected]> Cc: George Spelvin <[email protected] Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Rasmus Villemoes <[email protected]> Cc: Wang Nan <[email protected]> Cc: Yury Norov <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-08ld-version: Fix it on FedoraMichael S. Tsirkin1-0/+2
On Fedora 23, ld --version outputs: GNU ld version 2.25-15.fc23 But ld-version.sh fails to parse this, so e.g. mips build fails to enable VDSO, printing a warning that binutils >= 2.24 is required. To fix, teach ld-version to parse this format. Signed-off-by: Michael S. Tsirkin <[email protected]> Cc: [email protected] Cc: Michal Marek <[email protected]> Cc: [email protected] Cc: [email protected] Patchwork: https://patchwork.linux-mips.org/patch/12023/ Signed-off-by: Ralf Baechle <[email protected]>
2016-01-08firmware: dmi_scan: Fix UUID endianness for SMBIOS >= 2.6Andrea Arcangeli1-3/+3
The dmi_ver wasn't updated correctly before the dmi_decode method run to save the uuid. That resulted in "dmidecode -s system-uuid" and /sys/class/dmi/id/product_uuid disagreeing. The latter was buggy and this fixes it. Reported-by: Federico Simoncelli <[email protected]> Fixes: 9f9c9cbb6057 ("drivers/firmware/dmi_scan.c: fetch dmi version from SMBIOS if it exists") Fixes: 79bae42d51a5 ("dmi_scan: refactor dmi_scan_machine(), {smbios,dmi}_present()") Signed-off-by: Andrea Arcangeli <[email protected]> Signed-off-by: Jean Delvare <[email protected]>
2016-01-07locks: fix unlock when fcntl_setlk races with a closeJeff Layton1-21/+30
Dmitry reported that he was able to reproduce the WARN_ON_ONCE that fires in locks_free_lock_context when the flc_posix list isn't empty. The problem turns out to be that we're basically rebuilding the file_lock from scratch in fcntl_setlk when we discover that the setlk has raced with a close. If the l_whence field is SEEK_CUR or SEEK_END, then we may end up with fl_start and fl_end values that differ from when the lock was initially set, if the file position or length of the file has changed in the interim. Fix this by just reusing the same lock request structure, and simply override fl_type value with F_UNLCK as appropriate. That ensures that we really are unlocking the lock that was initially set. While we're there, make sure that we do pop a WARN_ON_ONCE if the removal ever fails. Also return -EBADF in this event, since that's what we would have returned if the close had happened earlier. Cc: Alexander Viro <[email protected]> Cc: <[email protected]> Fixes: c293621bbf67 (stale POSIX lock handling) Reported-by: Dmitry Vyukov <[email protected]> Signed-off-by: Jeff Layton <[email protected]> Acked-by: "J. Bruce Fields" <[email protected]>
2016-01-08ACPI / property: avoid leaking format string into kobject nameKees Cook1-1/+1
The dn->name is expected to be used as a literal, so add the missing "%s". Fixes: 263b4c1a64bc (ACPI / property: Expose data-only subnodes via sysfs) Signed-off-by: Kees Cook <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>
2016-01-07Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds1-0/+1
Pull drm nouveau fix from Dave Airlie: "Still not back to work, but I decided to forward this fix" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/nouveau/gr/nv40: fix oops in interrupt handler
2016-01-07Merge tag 'iommu-fixes-v4.4-rc8' of ↵Linus Torvalds2-4/+9
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU fixes from Joerg Roedel: - Two build issues, one in the ipmmu-vmsa driver and one for the new generic dma-api implemention used on arm64 - A performance fix for said dma-api implemention - An issue caused by a wrong offset in map_sg in the same code as above * tag 'iommu-fixes-v4.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/dma: Use correct offset in map_sg iommu/ipmmu-vmsa: Don't truncate ttbr if LPAE is not enabled iommu/dma: Avoid unlikely high-order allocations iommu/dma: Add some missing #includes
2016-01-07Merge tag 'trace-v4.4-rc4-4' of ↵Linus Torvalds2-0/+7
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull ftrace fix from Steven Rostedt: "PeiyangX Qiu reported that if a module fails to load between calling ftrace_module_init() and do_init_module() that the allocations made in ftrace_module_init() will not be freed, resulting in a memory leak. The solution is to call ftrace_release_mod() on the failing module in the fail path befor do_init_module() is called. This will remove any allocations made for that module, and nothing if ftrace_module_init() wasn't called yet for that module. Note, once do_init_module() is called, the MODULE_GOING notifiers are called for the failed module, which calls into the ftrace code to do the proper clean up (basically calling ftrace_release_mod())" * tag 'trace-v4.4-rc4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftrace/module: Call clean up function when module init fails early
2016-01-07perf tests: Give a bit more information on the CQM test failure pathArnaldo Carvalho de Melo1-1/+1
Before: $ perf test -v cqm 48: Test intel cqm nmi context read : --- start --- test child forked, pid 1681 parse_events failed test child finished with -2 ---- end ---- Test intel cqm nmi context read: Skip $ After: $ perf test -v cqm 48: Test intel cqm nmi context read : --- start --- test child forked, pid 1681 parse_events failed, is "intel_cqm/llc_occupancy/" available? test child finished with -2 ---- end ---- Test intel cqm nmi context read: Skip $ Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Matt Fleming <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-07perf tests: No need to set attr.sample_freq for tracking !PERF_RECORD_SAMPLEArnaldo Carvalho de Melo1-1/+0
We were asking for a 4kHz sample_freq, making the test fail needlessly when the system reduced /proc/sys/kernel/perf_event_max_sample_rate below that. Before: # perf test -vv dummy 23: Test using a dummy software event to keep tracking : --- start --- test child forked, pid 32421 ------------------------------------------------------------ perf_event_attr: type 1 size 112 config 0x9 { sample_period, sample_freq } 4000 sample_type IP|TID|ID|PERIOD <SNIP> sys_perf_event_open failed, error -22 Unable to open dummy and cycles event test child finished with -2 ---- end ---- Test using a dummy software event to keep tracking: Skip # [root@zoo ~]# cat /proc/sys/kernel/perf_event_max_sample_rate 1000 After: [root@zoo ~]# perf test dummy 23: Test using a dummy software event to keep tracking : Ok Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-07perf python: Add missing files to binding link listArnaldo Carvalho de Melo1-0/+2
Fixing this problem, introduced recently: $ perf test python 16: Try 'import perf' in python, checking link problems : FAILED! In verbose mode we find out what is missing: $ perf test -v python 16: Try 'import perf' in python, checking link problems : --- start --- test child forked, pid 24894 Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: /tmp/build/perf/python/perf.so: undefined symbol: find_next_bit test child finished with -1 ---- end ---- Try 'import perf' in python, checking link problems: FAILED! $ Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Fixes: f77b57ad4fc4 ("perf cpu_map: Add cpu_map__new_event function") Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-07ftrace/module: Call clean up function when module init fails earlySteven Rostedt (Red Hat)2-0/+7
If the module init code fails after calling ftrace_module_init() and before calling do_init_module(), we can suffer from a memory leak. This is because ftrace_module_init() allocates pages to store the locations that ftrace hooks are placed in the module text. If do_init_module() fails, it still calls the MODULE_GOING notifiers which will tell ftrace to do a clean up of the pages it allocated for the module. But if load_module() fails before then, the pages allocated by ftrace_module_init() will never be freed. Call ftrace_release_mod() on the module if load_module() fails before getting to do_init_module(). Link: http://lkml.kernel.org/r/[email protected] Reported-by: "Qiu, PeiyangX" <[email protected]> Fixes: a949ae560a511 "ftrace/module: Hardcode ftrace_module_init() call into load_module()" Cc: [email protected] # v2.6.38+ Acked-by: Rusty Russell <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>
2016-01-07perf test: No need for setting attr.sample_freq on the RECORD testArnaldo Carvalho de Melo1-1/+0
We're not looking at PERF_RECORD_SAMPLE entries and now by default we use PERF_COUNT_SW_DUMMY, so just remove that setting. Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-07perf test: Use "dummy" events in the PERF_RECORD_ testArnaldo Carvalho de Melo1-1/+4
As we're test just the !PERF_RECORD_SAMPLE records. Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-07perf evlist: Introduce perf_evlist__new_dummy constructorArnaldo Carvalho de Melo2-0/+31
For case where all we need is an evlist with just an "dummy" evsel, like in some 'perf test' entries. Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-07workqueue: simplify the apply_workqueue_attrs_locked()wanghaibin1-7/+4
If the apply_wqattrs_prepare() returns NULL, it has already cleaned up the related resources, so it can return directly and avoid calling the clean up function again. This doesn't introduce any functional changes. Signed-off-by: wanghaibin <[email protected]> Signed-off-by: Tejun Heo <[email protected]>
2016-01-07dts: vt8500: Add SDHC node to DTS file for WM8650Roman Volkov1-0/+9
Since WM8650 has the same 'WMT' SDHC controller as WM8505, and the driver is already in the kernel, this node enables the controller support for WM8650 Signed-off-by: Roman Volkov <[email protected]> Reviewed-by: Alexey Charkov <[email protected]> Cc: [email protected] Signed-off-by: Arnd Bergmann <[email protected]>
2016-01-07ARM: Fix broken USB support in multi_v7_defconfig for sunxi devicesTimo Sigurdsson1-0/+1
Commit 69fb4dcada77 ("power: Add an axp20x-usb-power driver") introduced a new driver for the USB power supply used on various Allwinner based SBCs. However, the driver was not added to multi_v7_defconfig which breaks USB support for some boards (e.g. LeMaker BananaPi) as the kernel will now turn off the USB power supply during boot by default if the driver isn't present. (This was not the case in linux 4.3 or lower where the USB power was always left on.) Hence, add the driver to multi_v7_defconfig in order to keep USB support working on those boards that require it. Signed-off-by: Timo Sigurdsson <[email protected]> Tested-by: Timo Sigurdsson <[email protected]> Acked-by: Maxime Ripard <[email protected]> Signed-off-by: Arnd Bergmann <[email protected]>
2016-01-07perf tests: No need to set attr.sample_freq in the perf time to TSC testArnaldo Carvalho de Melo1-1/+0
We were asking for a 4kHz sample_freq, making the test fail needlessly when the system reduced /proc/sys/kernel/perf_event_max_sample_rate below that. In this test we only look at the PERF_SAMPLE_TIME fields in PERF_RECORD_ meta events, no need to set sample_freq. Thanks to Namhyung for suggesting that max_sample_rate could be the reason for the test failure, seeing the 'perf test -vv' output I sent. Before: # echo 1000 > /proc/sys/kernel/perf_event_max_sample_rate # perf test TSC 45: Test converting perf time to TSC : FAILED! After: # perf test TSC 45: Test converting perf time to TSC : Ok # cat /proc/sys/kernel/perf_event_max_sample_rate 1000 Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2016-01-07kvm: x86: Check kvm_write_guest return value in kvm_write_wall_clockNicholas Krause1-1/+2
This makes sure the wall clock is updated only after an odd version value is successfully written to guest memory. Signed-off-by: Nicholas Krause <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2016-01-07KVM: s390: implement the RI support of guestFan Zhang4-1/+28
This patch adds runtime instrumentation support for KVM guest. We need to setup a save area for the runtime instrumentation-controls control block(RICCB) and implement the necessary interfaces to live migrate the guest settings. We setup the sie control block in a way, that the runtime instrumentation instructions of a guest are handled by hardware. We also add a capability KVM_CAP_S390_RI to make this feature opt-in as it needs migration support. Signed-off-by: Fan Zhang <[email protected]> Acked-by: Cornelia Huck <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]>
2016-01-07kvm/s390: drop unpaired smp_mbMichael S. Tsirkin1-1/+0
smp_mb on vcpu destroy isn't paired with anything, violating pairing rules, and seems to be useless. Drop it. Signed-off-by: Michael S. Tsirkin <[email protected]> Message-Id: <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]>
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