user/sven/linux.git/tools, branch v4.1.6

perf symbols: Store if there is a filter in place

2015-08-10T19:22:00Z

commit 0bc2f2f7d080561cc484d2d0a162a9396bed3383 upstream. When setting yup the symbols library we setup several filter lists, for dsos, comms, symbols, etc, and there is code that, if there are filters, do certain operations, like recalculate the number of non filtered histogram entries in the top/report TUI. But they were considering just the "Zoom" filters, when they need to take into account as well the above mentioned filters (perf top --comms, --dsos, etc). So store in symbol_conf.has_filter true if any of those filters is in place. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-f5edfmhq69vfvs1kmikq1wep@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo Cc: Andre Tomt Signed-off-by: Greg Kroah-Hartman

perf hists browser: Take the --comm, --dsos, etc filters into account

2015-08-10T19:21:58Z

commit 9c0fa8dd3d58de8b688fda758eea1719949c7f0a upstream. At some point: commit 2c86c7ca7606 Author: Namhyung Kim Date: Mon Mar 17 18:18:54 2014 -0300 perf report: Merge al->filtered with hist_entry->filtered We stopped dropping samples for things filtered via the --comms, --dsos, --symbols, etc, i.e. things marked as filtered in the symbol resolution routines (thread__find_addr_map(), perf_event__preprocess_sample(), etc). But then, in: commit 268397cb2a47 Author: Namhyung Kim Date: Tue Apr 22 14:49:31 2014 +0900 perf top/tui: Update nr_entries properly after a filter is applied We don't take into account entries that were filtered in perf_event__preprocess_sample() and friends, which leads to inconsistency in the browser seek routines, that expects the number of hist_entry->filtered entries to match what it thinks is the number of unfiltered, browsable entries. So, for instance, when we do: perf top --symbols ___non_existent_symbol___ the hist_browser__nr_entries() routine thinks there are no filters in place, uses the hists->nr_entries but all entries are filtered, leading to a segfault. Tested with: perf top --symbols malloc,free --percentage=relative Freezing, by pressing 'f', at any time and doing the math on the percentages ends up with 100%, ditto for: perf top --dsos libpthread-2.20.so,libxul.so --percentage=relative Both were segfaulting, all fixed now. More work needed to do away with checking if filters are in place, we should just use the nr_non_filtered_samples counter, no need to conditionally use it or hists.nr_filter, as what the browser does is just show unfiltered stuff. An audit of how it is being accounted is needed, this is the minimal fix. Reported-by: Michael Petlan Fixes: 268397cb2a47 ("perf top/tui: Update nr_entries properly after a filter is applied") Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-6w01d5q97qk0d64kuojme5in@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman

perf bench numa: Fix to show proper convergence stats

2015-08-03T16:29:18Z

commit 2b42b09b88c831ba4da2d669581dde371c38c2af upstream. With commit: e1e455f4f4d3 (perf tools: Work around lack of sched_getcpu in glibc < 2.6), perf_bench numa mem with -c or -m option is not able to correctly calculate convergence. With the above commit, sched_getcpu always seems to return -1. The intention of commit e1e455f was to add a sched_getcpu in glibc < 2.6. Hence keep the sched_getcpu definition under an ifdef. This regression happened occurred between v4.0 and v4.1 Signed-off-by: Srikar Dronamraju Acked-by: Ingo Molnar Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Vinson Lee Fixes: e1e455f4f4d3 ("perf tools: Work around lack of sched_getcpu in glibc < 2.6") Link: http://lkml.kernel.org/r/20150624111004.GA5220@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman

tools selftests: Fix 'clean' target with make 3.81

2015-07-21T17:10:02Z

commit 60df4642a83546fa6ea8286f5094ce8c0906c3ec upstream. Make 3.81 doesn't have the 'undefine' command. Using undefine to clear LDFLAGS fails when make version 3.81 is used. Fix it to use override to clear LDFLAGS. Tested-by: Shuah Khan Cc: David Ahern Cc: Ingo Molnar Cc: Michael Ellerman Link: http://lkml.kernel.org/r/20150514151225.GH23588@kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Shuah Khan Cc: Sudip Mukherjee Signed-off-by: Greg Kroah-Hartman

perf tools: Fix build breakage if prefix= is specified

2015-06-29T19:35:28Z

commit 75e84ab906ef8935cff3df3d8929f1bafea81599 upstream. Invoking Makefile.perf with prefix= breaks the build since Makefile.perf hands that variable down to Makefile.build where it overrides prefix := $(subst ./,,$(OUTPUT)$(dir)/) leading to errors like this: No rule to make target '/usrabspath.o', needed by '/usrlibperf-in.o' Signed-off-by: Lukas Wunner Acked-by: Jiri Olsa Cc: David Ahern Fixes: c819e2cf2eb6f65d3208d195d7a0edef6108d5 Link: http://lkml.kernel.org/r/5582c48a.84a22b0a.a918.5285SMTPIN_ADDED_MISSING@mx.google.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman

Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-06-05T17:03:48Z

Pull x86 fixes from Ingo Molnar: "Misc fixes: - early_idt_handlers[] fix that fixes the build with bleeding edge tooling - build warning fix on GCC 5.1 - vm86 fix plus self-test to make it harder to break it again" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/asm/irq: Stop relying on magic JMP behavior for early_idt_handlers x86/asm/entry/32, selftests: Add a selftest for kernel entries from VM86 mode x86/boot: Add CONFIG_PARAVIRT_SPINLOCKS quirk to arch/x86/boot/compressed/misc.h x86/asm/entry/32: Really make user_mode() work correctly for VM86 mode

Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux

2015-05-31T18:39:25Z

Pull turbostat tool fixes from Len Brown: "Just one minor kernel dependency in this batch -- added a #define to msr-index.h" * 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: tools/power turbostat: update version number to 4.7 tools/power turbostat: allow running without cpu0 tools/power turbostat: correctly decode of ENERGY_PERFORMANCE_BIAS tools/power turbostat: enable turbostat to support Knights Landing (KNL) tools/power turbostat: correctly display more than 2 threads/core

x86/asm/entry/32, selftests: Add a selftest for kernel entries from VM86 mode

2015-05-30T08:21:32Z

Test a couple of special cases in 32-bit kernels for entries from vm86 mode. This will OOPS both old kernels due to a bug and and 4.1-rc5 due to a regression I introduced, and it should make sure that the SYSENTER-from-vm86-mode hack in the kernel keeps working. Signed-off-by: Andy Lutomirski Cc: Jan Beulich Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Shuah Khan Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/09a9916761e0a9e42d4922f147af45a0079cc1e8.1432936374.git.luto@kernel.org Tests: 394838c96013 x86/asm/entry/32: Fix user_mode() misuses Tests: 7ba554b5ac69 x86/asm/entry/32: Really make user_mode() work correctly for VM86 mode Signed-off-by: Ingo Molnar

tools/power turbostat: update version number to 4.7

2015-05-27T22:04:01Z

Signed-off-by: Len Brown

tools/power turbostat: allow running without cpu0

2015-05-27T22:04:01Z

Linux-3.7 added CONFIG_BOOTPARAM_HOTPLUG_CPU0, allowing systems to offline cpu0. But when cpu0 is offline, turbostat will not run: # turbostat ls turbostat: no /dev/cpu/0/msr This patch replaces the hard-coded use of cpu0 in turbostat with the current cpu, allowing it to run without a cpu0. Fewer cross-calls may also be needed due to use of current cpu, though this hard-coding was used only for the --debug preamble. Signed-off-by: Prarit Bhargava Signed-off-by: Len Brown