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2015-02-09Merge branch 'core-rcu-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull RCU updates from Ingo Molnar: "The main RCU changes in this cycle are: - Documentation updates. - Miscellaneous fixes. - Preemptible-RCU fixes, including fixing an old bug in the interaction of RCU priority boosting and CPU hotplug. - SRCU updates. - RCU CPU stall-warning updates. - RCU torture-test updates" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits) rcu: Initialize tiny RCU stall-warning timeouts at boot rcu: Fix RCU CPU stall detection in tiny implementation rcu: Add GP-kthread-starvation checks to CPU stall warnings rcu: Make cond_resched_rcu_qs() apply to normal RCU flavors rcu: Optionally run grace-period kthreads at real-time priority ksoftirqd: Use new cond_resched_rcu_qs() function ksoftirqd: Enable IRQs and call cond_resched() before poking RCU rcutorture: Add more diagnostics in rcu_barrier() test failure case torture: Flag console.log file to prevent holdovers from earlier runs torture: Add "-enable-kvm -soundhw pcspk" to qemu command line rcutorture: Handle different mpstat versions rcutorture: Check from beginning to end of grace period rcu: Remove redundant rcu_batches_completed() declaration rcutorture: Drop rcu_torture_completed() and friends rcu: Provide rcu_batches_completed_sched() for TINY_RCU rcutorture: Use unsigned for Reader Batch computations rcutorture: Make build-output parsing correctly flag RCU's warnings rcu: Make _batches_completed() functions return unsigned long rcutorture: Issue warnings on close calls due to Reader Batch blows documentation: Fix smp typo in memory-barriers.txt ...
2015-02-06Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core kernel fixes from Ingo Molnar: "Two liblockdep fixes and a CPU hotplug race fix" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tools/liblockdep: don't include host headers tools/liblockdep: ignore generated .so file smpboot: Add missing get_online_cpus() in smpboot_register_percpu_thread()
2015-01-29tools/liblockdep: don't include host headersBaruch Siach
Adding host headers to include path may cause unexpected surprises when cross compiling. Remove /usr/local/include from the default include path. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
2015-01-29tools/liblockdep: ignore generated .so fileBaruch Siach
Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
2015-01-21perf probe: Fix probing kretprobesNamhyung Kim
The commit dfef99cd0b2c ("perf probe: Use ref_reloc_sym based address instead of the symbol name") converts kprobes to use ref_reloc_sym (i.e. _stext) and offset instead of using symbol's name directly. So on my system, adding do_fork ends up with like below: $ sudo perf probe -v --add do_fork%return probe-definition(0): do_fork%return symbol:do_fork file:(null) line:0 offset:0 return:1 lazy:(null) 0 arguments Looking at the vmlinux_path (7 entries long) Using /lib/modules/3.17.6-1-ARCH/build/vmlinux for symbols Could not open debuginfo. Try to use symbols. Opening /sys/kernel/debug/tracing/kprobe_events write=1 Added new event: Writing event: r:probe/do_fork _stext+456136 Failed to write event: Invalid argument Error: Failed to add events. Reason: Operation not permitted (Code: -1) As you can see, the do_fork was translated to _stext+456136. This was because to support (local) symbols that have same name. But the problem is that kretprobe requires to be inserted at function start point so it simply checks whether it's called with offset 0. And if not, it'll return with -EINVAL. You can see it with dmesg. $ dmesg | tail -1 [125621.764103] Return probe must be used without offset. So we need to use the symbol name instead of ref_reloc_sym in case of return probes. Reported-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: David Ahern <dsahern@gmail.com> Link: http://lkml.kernel.org/r/1421234288-22758-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-21perf symbols: Introduce 'for' method to iterate over the symbols with a ↵Arnaldo Carvalho de Melo
given name Removing boilerplate from two places, where one would have to find the first entry, then iterate using symbol__next_by_name + strcmp to see if the next member had the same name. Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Link: http://lkml.kernel.org/n/tip-eh73z8gthv20yowirmx2yk38@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-21perf probe: Do not rely on map__load() filter to find symbolsNamhyung Kim
The find_probe_trace_events_from_map() searches matching symbol from a map (so from a backing dso). For uprobes, it'll create a new map (and dso) and loads it using a filter. It's a little bit inefficient in that it'll read out the symbol table everytime but works well anyway. For kprobes however, it'll reuse existing kernel map which might be loaded before. In this case map__load() just returns with no result. It makes kprobes always failed to find symbol even if it exists in the map (dso). To fix it, use map__find_symbol_by_name() instead. It'll load a map with full symbols and sorts them by name. It needs to search sibing nodes since there can be multiple (local) symbols with same name. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Link: http://lkml.kernel.org/r/1421234288-22758-3-git-send-email-namhyung@kernel.org [ Use symbol__next_by_name ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-21perf symbols: Introduce method to iterate symbols ordered by nameArnaldo Carvalho de Melo
Given a symbol, go to the next entry in a rbtree sorted by symbol name. Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Link: http://lkml.kernel.org/n/tip-aq210drxprnu2so4dye5xa3j@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-21perf symbols: Return the first entry with a given name in find_by_name methodNamhyung Kim
When a dso contains multiple symbols which have same name, current dso__find_symbol_by_name() only finds an one of them and there's no way to get the all symbols without going through the rbtree. So make symbols__find_by_name() return the first entry with the given name and the next patch in this series will provide a way to iterate from there, by the name ordered rb_tree, till a suitable symbol is found. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Link: http://lkml.kernel.org/r/1421234288-22758-2-git-send-email-namhyung@kernel.org [ Yanked this independent hunk, without changes, from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-21perf annotate: Fix memory leaks in LOCK handlingRabin Vincent
The lock prefix handling fails to free the strdup()'d name as well as the fields allocated by the instruction parsing. Signed-off-by: Rabin Vincent <rabin@rab.in> Cc: Paul Mackerras <paulus@samba.org> Link: http://lkml.kernel.org/r/1421607621-15005-2-git-send-email-rabin@rab.in Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-21perf annotate: Handle ins parsing failuresRabin Vincent
Don't use the ins's ->sncprintf() if the parsing failed. For example, this fixes the display of "imul %edx". Without this patch: | imul (null),(null) After this patch: | imul %edx Signed-off-by: Rabin Vincent <rabin@rab.in> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1421607621-15005-1-git-send-email-rabin@rab.in Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-21perf scripting perl: Force to use stdboolWang Nan
When building perf for arm64 I hit a warning (and be treated as an error) like below: aarch64-oe-linux-gcc -o .../scripts/perl/Perf-Trace-Util/Context.o -c -Wbad-function-cast \ ... scripts/perl/Perf-Trace-Util/Context.c In file included from .../usr/lib64/perl/5.14.3/CORE/perl.h:2464:0, from Context.xs:23: /.../usr/lib64/perl/5.14.3/CORE/handy.h:108:0: error: "bool" redefined [-Werror] # define bool char ^ In file included from /.../usr/src/kernel/tools/include/linux/types.h:4:0, from /.../usr/src/kernel/arch/arm64/include/uapi/asm/sigcontext.h:19, from /.../usr/include/bits/sigcontext.h:27, from /.../usr/include/signal.h:340, from /.../usr/include/sys/param.h:28, from /.../usr/lib64/perl/5.14.3/CORE/perl.h:678, from Context.xs:23: /.../usr/lib/aarch64-oe-linux/gcc/aarch64-oe-linux/4.9.2/include/stdbool.h:33:0: note: this is the location of the previous definition #define bool _Bool Looks like the failure is caused by arm64 uapi/asm/sigcontext.h, which includes linux/types.h while other archs not. Current perl consider this problem: http://perl5.git.perl.org/perl.git/commit/bd31be4baa3ee68abdb92c0db3200efe0fad903b However there are users which use old version of perl. This patch includes stdbool.h before Context.xs and define HAS_BOOL to prevent perl'e headers define its own 'bool'. Code is learn from perl's git tree. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Li Zefan <lizefan@huawei.com> Link: http://lkml.kernel.org/r/1421671397-4659-1-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-21perf evlist: Remove extraneous 'was' on error messageArnaldo Carvalho de Melo
[acme@mica ~]$ trace -p 3330 Error: Unable to find debugfs Hint: Was your kernel was compiled with debugfs support? ^^^ ^^^ Hint: Is the debugfs filesystem mounted? Hint: Try 'sudo mount -t debugfs nodev /sys/kernel/debug' Fix it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-kb9s0xy5z8i51abdu4bgm3rv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-21Merge branch 'for-mingo' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull RCU updates from Paul E. McKenney: - Documentation updates. - Miscellaneous fixes. - Preemptible-RCU fixes, including fixing an old bug in the interaction of RCU priority boosting and CPU hotplug. - SRCU updates. - RCU CPU stall-warning updates. - RCU torture-test updates. Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-01-16perf tools powerpc: Use dwfl_report_elf() instead of offline.Sukadev Bhattiprolu
dwfl_report_offline() works only when libraries are prelinked. Replace dwfl_report_offline() with dwfl_report_elf() so we correctly extract debug info even from libraries that are not prelinked. Reported-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Tested-by: Jiri Olsa <jolsa@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Link: http://lkml.kernel.org/r/20150114221045.GA17703@us.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-16perf tools: Fix segfault for symbol annotation on TUINamhyung Kim
Currently the symbol structure is allocated with symbol_conf.priv_size to carry sideband information like annotation, map browser on TUI and sort-by-name tree node. So retrieving these information from symbol needs to care about the details of such placement. However the annotation code just assumes that the symbol is placed after the struct annotation. But actually there's other info between them. So accessing those struct will lead to an undefined behavior (usually a crash) after they write their info to the same location. To reproduce the problem, please follow the steps below: 1. run perf report (TUI of course) with -v option 2. open map browser (by pressing right arrow key for any entry) 3. search any function (by pressing '/' key and input whatever..) 4. return to the hist browser (by pressing 'q' or left arrow key) 5. open annotation window for the same entry (by pressing 'a' key) Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1421234288-22758-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-16perf test: Fix dwarf unwind using libunwind.Wang Nan
Perf tool fails to unwind user stack if the event raises in a shared object. This patch improves tests/dwarf-unwind.c to demonstrate the problem by utilizing commonly used glibc function "bsearch". If perf is not statically linked, the testcase will try to unwind a mixed call trace. By debugging libunwind I found that there is a bug in unwind-libunwind: it always passes 0 as segbase to libunwind, cause libunwind unable to locate debug_frame entry fir first level ip address (I add some more debugging output into libunwind to make things clear): >_Uarm_dwarf_find_debug_frame: start_ip = 10be98, end_ip = 10c2a4 >_Uarm_dwarf_find_debug_frame: found debug_frame table `/lib/libc-2.18.so': segbase=0x0, len=7, gp=0x0, table_data=0x449388 >_Uarm_dwarf_search_unwind_table: call lookup:ip = b6cd3bcc, segbase = 0, rel_ip = b6cd3bcc >lookup: e->start_ip_offset = bcf18 (rel_ip = b6cd3bcc) >lookup: e->start_ip_offset = 6d314 (rel_ip = b6cd3bcc) >lookup: e->start_ip_offset = 33d0c (rel_ip = b6cd3bcc) ... >lookup: e->start_ip_offset = 15d0c (rel_ip = b6cd3bcc) >lookup: e->start_ip_offset = 15c40 (rel_ip = b6cd3bcc) >_Uarm_dwarf_search_unwind_table: IP b6cd3bcc inside range b6c12000-b6d4c000, but no explicit unwind info found >put_rs_cache: unmasking signals/interrupts and releasing lock >_Uarm_dwarf_step: returning -10 >_Uarm_step: dwarf_step()=-10 This patch passes map->start as segbase to dwarf_find_debug_frame(), so di will be initialized correctly. In addition, dso and executable are different when setting segbase. This patch first check whether the elf is executable, and pass segbase only for shared object. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Li Zefan <lizefan@huawei.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1421203007-75799-1-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-16perf tools: Avoid build splat for syscall numbers with uclibcVineet Gupta
This is due to duplicated unistd inclusion (via uClibc headers + kernel headers) Also seen on ARM uClibc based tools ------- ARC build ---------->8------------- CC util/evlist.o In file included from ~/arc/k.org/arch/arc/include/uapi/asm/unistd.h:25:0, from util/../perf-sys.h:10, from util/../perf.h:15, from util/event.h:7, from util/event.c:3: ~/arc/k.org/include/uapi/asm-generic/unistd.h:906:0: warning: "__NR_fcntl64" redefined [enabled by default] #define __NR_fcntl64 __NR3264_fcntl ^ In file included from ~/arc/gnu/INSTALL_1412-arc-2014.12-rc1/arc-snps-linux-uclibc/sysroot/usr/include/sys/syscall.h:24:0, from util/../perf-sys.h:6, ----------------->8------------------- ------- ARM build ---------->8------------- CC FPIC plugin_scsi.o In file included from util/../perf-sys.h:9:0, from util/../perf.h:15, from util/cache.h:7, from perf.c:12: ~/arc/k.org/arch/arm/include/uapi/asm/unistd.h:28:0: warning: "__NR_restart_syscall" redefined [enabled by default] In file included from ~/buildroot/host/usr/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/sys/syscall.h:25:0, from util/../perf-sys.h:6, from util/../perf.h:15, from util/cache.h:7, from perf.c:12: ~/buildroot/host/usr/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/bits/sysnum.h:17:0: note: this is the location of the previous definition ----------------->8------------------- Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Alexey Brodkin <Alexey.Brodkin@synopsys.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1421156604-30603-4-git-send-email-vgupta@synopsys.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-16perf tools: Elide strlcpy warning with uclibcVineet Gupta
----------------->8------------------ CC bench/sched-pipe.o In file included from builtin-annotate.c:13:0: util/cache.h:76:15: warning: redundant redeclaration of 'strlcpy' [-Wredundant-decls] extern size_t strlcpy(char *dest, const char *src, size_t size); ^ In file included from util/util.h:55:0, from builtin.h:4, from builtin-annotate.c:8: ~/vineetg/arc/gnu/INSTALL_1412-arc-2014.12-rc1/arc-snps-linux-uclibc/sysroot/usr/include/string.h:396:15: note: previous declaration of 'strlcpy' was here extern size_t strlcpy(char *__restrict dst, const char *__restrict src, ----------------->8------------------ Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Alexey Brodkin <Alexey.Brodkin@synopsys.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1421156604-30603-3-git-send-email-vgupta@synopsys.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-16perf tools: Fix statfs.f_type data type mismatch build error with uclibcAlexey Brodkin
ARC Linux uses the no legacy syscalls abi and corresponding uClibc headers statfs defines f_type to be U32 which causes perf build breakage http://git.uclibc.org/uClibc/tree/libc/sysdeps/linux/common-generic/bits/statfs.h ----------->8--------------- CC fs/fs.o fs/fs.c: In function 'fs__valid_mount': fs/fs.c:82:24: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare] else if (st_fs.f_type != magic) ^ cc1: all warnings being treated as errors ----------->8--------------- Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Borislav Petkov <bp@suse.de> Cc: Cody P Schafer <dev@codyps.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com> Link: http://lkml.kernel.org/r/1420888254-17504-2-git-send-email-vgupta@synopsys.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-16tools: Remove bitops/hweight usage of bits in tools/perfArnaldo Carvalho de Melo
We need to use lib/hweight.c for that, just like we do for lib/rbtree.c, so tools need to link hweight.o. For now do it directly, but we need to have a tools/lib/lk.a or .so that collects these goodies... Reported-by: Jan Beulich <JBeulich@suse.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-a1e91dx3apzqw5kbdt7ut21s@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-16perf machine: Fix __machine__findnew_thread() error pathNamhyung Kim
When thread__init_map_groups() fails, a new thread should be removed from the rbtree since it's gonna be freed. Also update last match cache only if the function succeeded. Reported-by: David Ahern <dsahern@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1420763892-15535-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-16perf tools: Fix building error in x86_64 when dwarf unwind is onNamhyung Kim
When build with 'make ARCH=x86' and dwarf unwind is on, there is a compiling error: CC /home/wn/perf/arch/x86/util/unwind-libdw.o CC /home/wn/perf/arch/x86/tests/regs_load.o arch/x86/tests/regs_load.S: Assembler messages: arch/x86/tests/regs_load.S:65: Error: operand type mismatch for `push' arch/x86/tests/regs_load.S:72: Error: operand type mismatch for `pop' make[1]: *** [/home/wn/perf/arch/x86/tests/regs_load.o] Error 1 make[1]: INTERNAL: Exiting with 25 jobserver tokens available; should be 24! make: *** [all] Error 2 ... Which is caused by incorrectly undefine macro HAVE_ARCH_X86_64_SUPPORT. 'config/Makefile.arch' tests __x86_64__ only when 'ARCH=x86_64'. However, when building x86_64 kernel, ARCH=x86 is valid and commonly used. Build systems, such as yocto, uses x86_64 compiler with 'ARCH=x86' to build x86_64 perf, which causes mismatching. As __LP64__ is defined for x86_64 as well, we can consolidate the __x86_64__ check to the __LP64__ check and get rid of the IS_X86_64 IMHO. (This patch is made by Namhyung Kim when replying my v1 patch: https://lkml.org/lkml/2015/1/7/17 I modified the code to remove dependency on RAW_ARCH: https://lkml.org/lkml/2015/1/7/865 Namhyung Kim didn't provide his SOB in his original email. I add mine only for my modification.) Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Li Zefan <lizefan@huawei.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1421029255-23039-1-git-send-email-wangnan0@huawei.com [ Namhyung provided his S-o-B on a followup to this patch thread on lkml ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-16perf probe: Propagate error code when write(2) failedNamhyung Kim
When it failed to write probe commands to the probe_event file in debugfs, it needs to propagate the error code properly. Current code blindly uses the return value of the write(2) so it always uses -1 (-EPERM) and it might confuse users. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1420886028-15135-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-15Merge branches 'doc.2015.01.07a', 'fixes.2015.01.15a', ↵Paul E. McKenney
'preempt.2015.01.06a', 'srcu.2015.01.06a', 'stall.2015.01.16a' and 'torture.2015.01.11a' into HEAD doc.2015.01.07a: Documentation updates. fixes.2015.01.15a: Miscellaneous fixes. preempt.2015.01.06a: Changes to handling of lists of preempted tasks. srcu.2015.01.06a: SRCU updates. stall.2015.01.16a: RCU CPU stall-warning updates and fixes. torture.2015.01.11a: RCU torture-test updates and fixes.
2015-01-14Merge tag 'linux-kselftest-3.19-rc-5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest fixes from Shuah Khan: "This update contains three patches to fix one compile error, and two run-time bugs. One of them fixes infinite loop on ARM" * tag 'linux-kselftest-3.19-rc-5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/vm: fix link error for transhuge-stress test tools: testing: selftests: mq_perf_tests: Fix infinite loop on ARM selftests/exec: allow shell return code of 126
2015-01-11Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "Mostly tooling fixes, but also some kernel side fixes: uncore PMU driver fix, user regs sampling fix and an instruction decoder fix that unbreaks PEBS precise sampling" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/uncore/hsw-ep: Handle systems with only two SBOXes perf/x86_64: Improve user regs sampling perf: Move task_pt_regs sampling into arch code x86: Fix off-by-one in instruction decoder perf hists browser: Fix segfault when showing callchain perf callchain: Free callchains when hist entries are deleted perf hists: Fix children sort key behavior perf diff: Fix to sort by baseline field by default perf list: Fix --raw-dump option perf probe: Fix crash in dwarf_getcfi_elf perf probe: Fix to fall back to find probe point in symbols perf callchain: Append callchains only when requested perf ui/tui: Print backtrace symbols when segfault occurs perf report: Show progress bar for output resorting
2015-01-11Merge branch 'core/urgent' into locking/urgent, to collect all pending ↵Ingo Molnar
locking fixes Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-01-10torture: Flag console.log file to prevent holdovers from earlier runsPaul E. McKenney
A system misconfiguration that prevents qemu from running at all (for example, a missing dynamically linked library) will keep the console.log file from the previous run. This can fool the developer into thinking that this failed run actually completed correctly. This commit therefore overwrites the console.log file just before launching qemu. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-01-10torture: Add "-enable-kvm -soundhw pcspk" to qemu command linePaul E. McKenney
More recent qemu implementations really want "-enable-kvm", and the "-soundhw pcspk" makes the script a bit less dependent on odd audio libraries being installed. This commit therefore adds both to the default qemu command line. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-01-10rcutorture: Handle different mpstat versionsPaul E. McKenney
The mpstat command recently added the %gnice column, which messes up the cpu2use.sh script's idle-CPU calculations. This commit therefore uses $NF instead of $12 to select the last (%idle) column. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-01-10rcutorture: Make build-output parsing correctly flag RCU's warningsPaul E. McKenney
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-01-10rcutorture: Issue warnings on close calls due to Reader Batch blowsPaul E. McKenney
Normal rcutorture checking overestimates grace periods somewhat due to the fact that there is a delay from a grace-period request until the start of the corresponding grace period and another delay from the end of that grace period to notification of the requestor. This means that rcutorture's detection of RCU bugs is less sensitive than it might be. It turns out that rcutorture also checks the underlying grace-period "completed" counter (displayed in Reader Batch output), which in theory allows rcutorture to do exact checks. In practice, memory misordering (by both compiler and CPU) can result in false positives. However, experience on x86 shows that these false positives are quite rare, occurring less than one time per 1,000 hours of testing. This commit therefore does the exact checking, giving a warning if any Reader Batch blows happen, and flagging an error if they happen more often than once every three hours in long tests. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-01-08selftests/vm: fix link error for transhuge-stress testAndrey Skvortsov
add -lrt to fix undefined reference to `clock_gettime' error seen when the test is compiled using gcc 4.6.4. Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-01-08perf hists browser: Fix segfault when showing callchainNamhyung Kim
When perf report on TUI shows callchain it checks first node has siblings to determine whether it needs to print percentage value. But it missed a case that first node is NULL. So sometimes it segfaults like below: $ perf top -g perf: Segmentation fault -------- backtrace -------- perf[0x4fcefb] /usr/lib/libc.so.6(+0x33b20)[0x7f2a35839b20] perf(rb_next+0x8)[0x47d3d8] perf[0x4f6058] perf[0x4f833b] perf[0x4f8610] perf[0x4f209e] perf(ui_browser__run+0x3a)[0x4f2e6a] perf[0x4f94ee] perf(perf_evlist__tui_browse_hists+0x94)[0x4fbbf4] perf[0x444d10] /usr/lib/libpthread.so.0(+0x7314)[0x7f2a37070314] /usr/lib/libc.so.6(clone+0x6d)[0x7f2a358ee5bd] $ addr2line -e `which perf` 0x4f6058 /home/namhyung/project/linux/tools/perf/ui/browsers/hists.c:553 I don't know why the backtrace didn't print some symbols.. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Fixes: 4087d11cd945 ("perf hists browser: Print overhead percent value for first-level callchain") Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1419401076-21700-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-08perf callchain: Free callchains when hist entries are deletedNamhyung Kim
Markus reported that "perf top -g" can leak ~300MB per second on his machine. This is partly because it missed to free callchains when hist entries are deleted. Fix it. Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20141230053813.GD6081@sejong Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-08perf hists: Fix children sort key behaviorNamhyung Kim
When perf report --children resorts output fields, it tries to put caller above the callee. But this was only meaningful for a same thread and doing this requires callchain enabled. So fix its check before comparing the callchain depth. This also changes the hist accumulation tests: In test 3, xmalloc in bash thread should be above than other perf threads due to alphabetical order of comm string. Also it's under page_fault in bash thread since alphabetical order of dso name. The sys_perf_event_open in perf thread is put on the last line since it's self overhead is 0. In test 4, the sys_perf_event_open is put above other perf entries that have same children overhead since its callchain depth is smaller. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1419309381-2593-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-06tools: testing: selftests: mq_perf_tests: Fix infinite loop on ARMdann frazier
We can't use a char type to check for a negative return value since char isn't guaranteed to be signed. Indeed, the char type tends to be unsigned on ARM. Signed-off-by: dann frazier <dann.frazier@canonical.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-01-06selftests/exec: allow shell return code of 126David Drysdale
When the shell fails to invoke a script because its path name is too long (ENAMETOOLONG), most shells return 127 to indicate command not found. However, some systems report 126 (which POSIX suggests should indicate a non-executable file) for this case, so allow that too. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David Drysdale <drysdale@google.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-01-06rcutorture: Add checks for stall ending before dump startPaul E. McKenney
The current rcutorture scripting checks for actual stalls (via the "Call Trace:" check), but fails to spot the case where a stall ends just as it is being detected. This commit therefore adds a check for this case. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-01-02perf diff: Fix to sort by baseline field by defaultNamhyung Kim
The currently perf diff didn't add the baseline and delta (or other compute) fields to the sort list so output will be sorted by other fields like alphabetical order of DSO or symbol as below example. Fix it by adding hpp formats for the fields and provides default compare functions. Before: $ perf diff # Event 'cycles' # # Baseline Delta Shared Object Symbol # ........ ....... .................. ............................... # [bridge] [k] ip_sabotage_in [btrfs] [k] __etree_search.constprop.47 0.01% [btrfs] [k] btrfs_file_mmap 0.01% -0.01% [btrfs] [k] btrfs_getattr [e1000e] [k] e1000_watchdog 0.00% [kernel.vmlinux] [k] PageHuge 0.00% [kernel.vmlinux] [k] __acct_update_integrals 0.00% [kernel.vmlinux] [k] __activate_page [kernel.vmlinux] [k] __alloc_fd 0.02% +0.02% [kernel.vmlinux] [k] __alloc_pages_nodemask ... After: # Baseline Delta Shared Object Symbol # ........ ....... .................. ................................ # 24.73% -4.62% perf [.] append_chain_children 7.96% -1.29% perf [.] dso__find_symbol 6.97% -2.07% libc-2.20.so [.] vfprintf 4.61% +0.88% libc-2.20.so [.] __fprintf_chk 4.41% +2.43% perf [.] sort__comm_cmp 4.10% -0.16% perf [.] comm__str 4.03% -0.93% perf [.] machine__findnew_thread_time 3.82% +3.09% perf [.] __hists__add_entry 2.95% -0.18% perf [.] sort__dso_cmp ... Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1419656793-32756-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-02perf list: Fix --raw-dump optionTaesoo Kim
Currently, 'perf list --raw-dump' requires extra arguments (e.g., hw) to invoke, which breaks bash/zsh completion (perf-completion.sh). $ perf list --raw-dump Error: unknown option `raw-dump' usage: perf list [hw|sw|cache|tracepoint|pmu|event_glob] After, $ perf list --raw-dump cpu-cycles instructions cache-references cache-misses ... Signed-off-by: Taesoo Kim <tsgatesv@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Taesoo kim <taesoo@gatech.edu> Link: http://lkml.kernel.org/r/1419997015-11071-1-git-send-email-tsgatesv@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-02perf probe: Fix crash in dwarf_getcfi_elfNamhyung Kim
David reported that perf can segfault when adding an uprobe event like this: $ perf probe -x /lib64/libc-2.14.90.so -a 'malloc size=%di' (gdb) bt #0 parse_eh_frame_hdr (hdr=0x0, hdr_size=2596, hdr_vaddr=71788, ehdr=0x7fffffffd390, eh_frame_vaddr= 0x7fffffffd378, table_entries=0x8808d8, table_encoding=0x8808e0 "") at dwarf_getcfi_elf.c:79 #1 0x000000385f81615a in getcfi_scn_eh_frame (hdr_vaddr=71788, hdr_scn=0x8839b0, shdr=0x7fffffffd2f0, scn=<optimized out>, ehdr=0x7fffffffd390, elf=0x882b30) at dwarf_getcfi_elf.c:231 #2 getcfi_shdr (ehdr=0x7fffffffd390, elf=0x882b30) at dwarf_getcfi_elf.c:283 #3 dwarf_getcfi_elf (elf=0x882b30) at dwarf_getcfi_elf.c:309 #4 0x00000000004d5bac in debuginfo__find_probes (pf=0x7fffffffd4f0, dbg=Unhandled dwarf expression opcode 0xfa) at util/probe-finder.c:993 #5 0x00000000004d634a in debuginfo__find_trace_events (dbg=0x880840, pev=<optimized out>, tevs=0x880f88, max_tevs=<optimized out>) at util/probe-finder.c:1200 #6 0x00000000004aed6b in try_to_find_probe_trace_events (target=0x881b20 "/lib64/libpthread-2.14.90.so", max_tevs=128, tevs=0x880f88, pev=0x859b30) at util/probe-event.c:482 #7 convert_to_probe_trace_events (target=0x881b20 "/lib64/libpthread-2.14.90.so", max_tevs=128, tevs=0x880f88, pev=0x859b30) at util/probe-event.c:2356 #8 add_perf_probe_events (pevs=<optimized out>, npevs=1, max_tevs=128, target=0x881b20 "/lib64/libpthread-2.14.90.so", force_add=false) at util/probe-event.c:2391 #9 0x000000000044014f in __cmd_probe (argc=<optimized out>, argv=0x7fffffffe2f0, prefix=Unhandled dwarf expression opcode 0xfa) at at builtin-probe.c:488 #10 0x0000000000440313 in cmd_probe (argc=5, argv=0x7fffffffe2f0, prefix=<optimized out>) at builtin-probe.c:506 #11 0x000000000041d133 in run_builtin (p=0x805680, argc=5, argv=0x7fffffffe2f0) at perf.c:341 #12 0x000000000041c8b2 in handle_internal_command (argv=<optimized out>, argc=<optimized out>) at perf.c:400 #13 run_argv (argv=<optimized out>, argcp=<optimized out>) at perf.c:444 #14 main (argc=5, argv=0x7fffffffe2f0) at perf.c:559 And I found a related commit (5704c8c4fa71 "getcfi_scn_eh_frame: Don't crash and burn when .eh_frame bits aren't there.") in elfutils that can lead to a unexpected crash like this. To safely use the function, it needs to check the .eh_frame section is a PROGBITS type. Reported-by: David Ahern <dsahern@gmail.com> Tested-by: David Ahern <dsahern@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: David Ahern <dsahern@gmail.com> Cc: Mark Wielaard <mjw@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Link: http://lkml.kernel.org/r/20141230090533.GH6081@sejong Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-02perf probe: Fix to fall back to find probe point in symbolsMasami Hiramatsu
Fix to fall back to find a probe point in symbols if perf fails to find it in debuginfo. This can happen when the target function is an alias of another function. Such alias doesn't have an entry in debuginfo but in symbols. David Ahern reported this problem in https://lkml.org/lkml/2014/12/29/355 I ensured the problem and deeper investigation discovers it. ----- eu-readelf --debug-dump=info /usr/lib/debug/lib/x86_64-linux-gnu/libc-2.19.so | grep \"malloc\" -A6 name (strp) "malloc" decl_file (data1) 25 decl_line (data2) 466 prototyped (flag_present) type (ref4) [ 81b5] declaration (flag_present) [ 8f58] formal_parameter -- name (strp) "malloc" decl_file (data1) 23 decl_line (data2) 466 prototyped (flag_present) type (ref4) [ 9f4a] declaration (flag_present) sibling (ref4) [ bb29] ... ----- All these entires have no instances (all of them are declarations) This is why the perf probe failed to find it in debuginfo. However, there are some malloc instances in symbols. ----- eu-readelf --symbols /usr/lib/debug/lib/x86_64-linux-gnu/libc-2.19.so | grep malloc$ 1181: 0000000000080700 5332 FUNC LOCAL DEFAULT 12 _int_malloc 4537: 00000000000831d0 339 FUNC LOCAL DEFAULT 12 __GI___libc_malloc 5545: 00000000000831d0 339 FUNC LOCAL DEFAULT 12 __malloc 6063: 00000000000831d0 339 FUNC GLOBAL DEFAULT 12 malloc 7302: 00000000000831d0 339 FUNC GLOBAL DEFAULT 12 __libc_malloc ----- As you an see, malloc and __libc_malloc have same address, and actually __libc_malloc has an entry in debuginfo. So you can set up a probe on __libc_malloc. To fix this problem shortly, perf probe simply falls back to find probe point(malloc) in symbols if it is not found in debuginfo. Reported-by: David Ahern <dsahern@gmail.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20141231062747.2087.80961.stgit@localhost.localdomain Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-01-01Merge tag 'perf-urgent-for-mingo' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes from Arnaldo Carvalho de Melo: User visible fixes: - Show progress bar in more places while doing histogram processing in the hists browser (Namhyung Kim) - Print backtrace symbols when segfault occurs in 'report' (Namhyung Kim) Infrastructure fixes: - Append callchains only when requested (Namhyung Kim) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-12-30Merge tag 'linux-kselftest-3.19-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest fix from Shuah Khan: "Fix exec test compile warnings" * tag 'linux-kselftest-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/exec: Use %zu to format size_t
2014-12-29Merge branches 'pm-domains', 'powercap' and 'pm-tools'Rafael J. Wysocki
* pm-domains: PM / Domains: Export of_genpd_get_from_provider function * powercap: powercap / RAPL: add IDs for future Xeon CPUs * pm-tools: tools / cpupower: Fix no idle state information return value tools / cpupower: Correctly detect if running as root
2014-12-23perf callchain: Append callchains only when requestedNamhyung Kim
The perf report --children can be called with callchain disabled so no need to append callchains. Actually the root of callchain tree is not initialized properly in this case. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1419223455-4362-7-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-23perf ui/tui: Print backtrace symbols when segfault occursNamhyung Kim
The output will look like below. (I added an error into ui__init() for the test). $ perf report perf: Segmentation fault -------- backtrace -------- perf[0x503781] /usr/lib/libc.so.6(+0x33b20)[0x7f1a14f04b20] perf(ui__init+0xd5)[0x503645] perf(setup_browser+0x97)[0x4ce4e7] perf(cmd_report+0xcea)[0x4392ba] perf[0x428493] perf(main+0x60a)[0x427c0a] /usr/lib/libc.so.6(__libc_start_main+0xf0)[0x7f1a14ef1040] perf[0x427d29] [0x0] Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1419223455-4362-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-12-23perf report: Show progress bar for output resortingNamhyung Kim
Sometimes it takes a long time to resort hist entries for output in case of a large data file. Show a progress bar window and inform user. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1419223455-4362-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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