22 Jul, 2015
1 commit
-
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
30 Jun, 2015
1 commit
-
commit 75e84ab906ef8935cff3df3d8929f1bafea81599 upstream.
Invoking Makefile.perf with prefix= breaks the build since Makefile.perf
hands that variable down to Makefile.build where it overridesprefix := $(subst ./,,$(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
06 Jun, 2015
1 commit
-
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
01 Jun, 2015
1 commit
-
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
30 May, 2015
1 commit
-
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
28 May, 2015
5 commits
-
Signed-off-by: Len Brown
-
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/msrThis 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 -
When EPB is 0xF, turbosat was incorrectly describing it as "custom"
instead of calling it "powersave":< cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x0000000f (custom)
> cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x0000000f (powersave)Signed-off-by: Len Brown
-
Changes mainly to account for minor differences in Knights Landing(KNL):
1. KNL supports C1 and C6 core states.
2. KNL supports PC2, PC3 and PC6 package states.
3. KNL has a different encoding of the TURBO_RATIO_LIMIT MSRSigned-off-by: Dasaratharaman Chandramouli
Signed-off-by: Len Brown -
Without this update, turbostat displays only 2 threads per core.
Some processors, such as Xeon Phi, have more.Signed-off-by: Dasaratharaman Chandramouli
Signed-off-by: Len Brown
27 May, 2015
1 commit
-
With recent debugging, I noticed that bpf_jit_disasm segfaults when
there's no debugging output from the JIT compiler to the kernel log.Reason is that when regexec(3) doesn't match on anything, start/end
offsets are not being filled out and contain some uninitialized garbage
from stack. Thus, we need zero out offsets first.Signed-off-by: Daniel Borkmann
Signed-off-by: David S. Miller
17 May, 2015
2 commits
-
Pull thermal fixes from Zhang Rui:
"Specifics:- fix an issue in intel_powerclamp driver that idle injection target
is not accurately maintained on newer Intel CPUs. Package C8 to
C10 states are introduced on these CPUs but they were not included
in the package c-state residency calculation. From Jacob Pan.- fix a problem that package c-state idle injection was missing on
Broadwell server, by adding its id to intel_powerclamp driver.
From Jacob Pan.- a couple of small fixes and cleanups from Joe Perches, Mathias
Krause, Dan Carpenter and Anand Moon"* 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
tools/thermal: tmon: fixed the 'make install' command
thermal: rockchip: fix an error code
thermal/powerclamp: fix missing newer package c-states
thermal/intel_powerclamp: add id for broadwell server
thermal/intel_powerclamp: add __init / __exit annotations
thermal: Use bool function return values of true/false not 1/0 -
…/git/shuah/linux-kselftest
Pull kselftest fixes from Shuah Khan:
"Urgent fix for Kselftest regression introduced in 4.1-rc1 by the new
x86 test due to its hard dependency on 32-bit build environment.A set of 5 patches fix the make kselftest run and kselftest install"
* tag 'linux-kselftest-4.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests, x86: Rework x86 target architecture detection
selftests, x86: Remove useless run_tests rule
selftests/x86: install tests
selftest/x86: have no dependency on all when cross building
selftest/x86: build both bitnesses
15 May, 2015
1 commit
-
…/sashal/linux into perf/urgent
Pull liblockdep fixes from Sasha Levin:
"two fixes that deal with compilation errors in liblockdep."
Signed-off-by: Ingo Molnar <mingo@kernel.org>
13 May, 2015
9 commits
-
Recent changes to kernel/locking/lockdep.c broke the liblockdep build. Fix
that.Signed-off-by: Eunbong Song
Signed-off-by: Sasha Levin -
If we try to cross compile liblockdep, even if we set the CROSS_COMPILE variable
the linker error can occur because LD is not set with CROSS_COMPILE.
This patch adds "LD" can be set automatically with CROSS_COMPILE variable so
fixes linker error problem.Signed-off-by: Eunbong Song
Signed-off-by: Sasha Levin -
We currently fail to build on a non-multilib x86_64 target. We
print a helpful error, but it's nicer to allow the build to succeed.
Fix it and improve cross-compilation support by detecting
architecture support directly and building only the relevant tests.Signed-off-by: Andy Lutomirski
Signed-off-by: Shuah Khan -
Now that selftests/x86 uses the kselftest infrastructure, the
run_x86_tests.sh mechanism is just in the way.Signed-off-by: Andy Lutomirski
Signed-off-by: Shuah Khan -
Include lib.mk and set TEST_PROGS where appropriate.
Cc: Andy Lutomirski
Signed-off-by: Tyler Baker
Signed-off-by: Shuah Khan -
If the CROSS_COMPILE is set remove all's dependency on all_32 and all_64.
Cc: Andy Lutomirski
Acked-by: Andy Lutomirski
Signed-off-by: Tyler Baker
Signed-off-by: Shuah Khan -
Using uname with the processor flag option in some cases can yield 'unknown'
so lets use the machine flag option as it is deterministic. Add a dependency
for all_32 when building on a x86 64 bit host so that both bitnesses are
built in this case.Cc: Andy Lutomirski
Acked-by: Andy Lutomirski
Signed-off-by: Tyler Baker
Signed-off-by: Shuah Khan -
Parsing /proc/cpuinfo is a fiddly, arch-dependent business and a recent
change to get it working for Sparc broke arm and arm64 platforms.Use sysconf to determine the number of online CPUs only parsing
/proc/cpuinfo when sysconf is not available.Signed-off-by: Will Deacon
Acked-by: Jiri Olsa
Tested-by: Arnaldo Carvalho de Melo
Cc: David Ahern
Cc: Mark Rutland
Cc: Namhyung Kim
Link: http://lkml.kernel.org/r/20150423140454.GJ1652@arm.com
[ Made it fall back to parsing /proc when getconf not found ]
Signed-off-by: Arnaldo Carvalho de Melo -
libabikfs.a doesn't exist anymore, so we now need to link with libapi.a.
Signed-off-by: Andi Kleen
Cc: Andrew Morton
Link: http://lkml.kernel.org/r/1426199953-15324-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo
09 May, 2015
1 commit
-
To install tmon we issue "make install" which produces bellow error.
root@odroidxu3:/usr/src/odroidxu3-4.y-testing/tools/thermal/tmon# make install
mkdir -p /usr/bin
install -m 755 -p "tmon" "/usr/bin/tmon"
mkdir -p /
install -m 644 -p "" "/"
install: cannot stat ‘’: No such file or directory
make: [install] Error 1 (ignored)Signed-off-by: Anand Moon
Acked-by: Jacob Pan
Signed-off-by: Zhang Rui
07 May, 2015
1 commit
-
Pull perf fixes from Ingo Molnar:
"Mostly tooling fixes, but also an uncore PMU driver fix and an uncore
PMU driver hardware-enablement addition"* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf probe: Fix segfault if passed with ''.
perf report: Fix -T/--threads option to work again
perf bench numa: Fix immediate meeting of convergence condition
perf bench numa: Fixes of --quiet argument
perf bench futex: Fix hung wakeup tasks after requeueing
perf probe: Fix bug with global variables handling
perf top: Fix a segfault when kernel map is restricted.
tools lib traceevent: Fix build failure on 32-bit arch
perf kmem: Fix compiles on RHEL6/OL6
tools lib api: Undefine _FORTIFY_SOURCE before setting it
perf kmem: Consistently use PRIu64 for printing u64 values
perf trace: Disable events and drain events when forked workload ends
perf trace: Enable events when doing system wide tracing and starting a workload
perf/x86/intel/uncore: Move PCI IDs for IMC to uncore driver
perf/x86/intel/uncore: Add support for Intel Haswell ULT (lower power Mobile Processor) IMC uncore PMUs
perf/x86/intel: Add cpu_(prepare|starting|dying) for core_pmu
05 May, 2015
1 commit
-
Since parse_perf_probe_point() deals with a user passed argument, we
should not assume it to be a valid string.Without this patch, if pass '' to perf probe, a segfault raises:
$ perf probe -a ''
Segmentation faultThis patch checks argument of parse_perf_probe_point() before
string processing.After this patch:
$ perf probe -a ''
usage: perf probe [] 'PROBEDEF' ['PROBEDEF' ...]
or: perf probe [] --add 'PROBEDEF' [--add 'PROBEDEF' ...]
...Signed-off-by: Wang Nan
Acked-by: Masami Hiramatsu
Tested-by: Arnaldo Carvalho de Melo
Cc: David Ahern
Cc: Jiri Olsa
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Zefan Li
Link: http://lkml.kernel.org/r/1430210769-94177-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo
01 May, 2015
2 commits
-
The commit 512ae1bd6acb ("perf tools: Consolidate management of default
sort orders") changed default value of the 'sort_order' variable to NULL
indicating that users don't set any sort keys on the command line.However it missed to update a check in perf_evlist__tty_browse_hists()
so that 'perf report -T' cannot show the per-thread values after the
normal output. This patch fixes it to work again.Note that the -T option only works on --stdio and neither --sort nor
--parent option was given.Signed-off-by: Namhyung Kim
Cc: Andi Kleen
Cc: David Ahern
Cc: Jiri Olsa
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1430309328-28317-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
My patch to add install support for the powerpc selftests had a typo,
leading to the three tests in the pmu directory itself not being
installed.Fixes: 6faeeea44b84 ("selftests: Add install support for the powerpc tests")
Signed-off-by: Michael Ellerman
30 Apr, 2015
1 commit
-
This reverts commit feba40362b11341bee6d8ed58d54b896abbd9f84.
Although the principle of this change is good, the implementation has a
few issues.Firstly we can sometimes fail to abort a syscall because r12 may have
been clobbered by C code if we went down the virtual CPU accounting
path, or if syscall tracing was enabled.Secondly we have decided that it is safer to abort the syscall even
earlier in the syscall entry path, so that we avoid the syscall tracing
path when we are transactional.So that we have time to thoroughly test those changes we have decided to
revert this for this merge window and will merge the fixed version in
the next window.NB. Rather than reverting the selftest we just drop tm-syscall from
TEST_PROGS so that it's not run by default.Fixes: feba40362b11 ("powerpc/tm: Abort syscalls in active transactions")
Signed-off-by: Michael Ellerman
28 Apr, 2015
5 commits
-
This patch fixes the race in the beginning of benchmark run when some
threads hasn't got assigned curr_cpu yet so they don't occur in
nodes-of-process stats and benchmark concludes that all remaining
threads are converged already.The race can be reproduced with small amount of threads and some bigger
amount of shared process memory, e.g. one process, two threads and 5GB
of process memory.Signed-off-by: Petr Holasek
Reviewed-by: Ingo Molnar
Cc: Jiri Olsa
Link: http://lkml.kernel.org/r/1429198699-25039-4-git-send-email-pholasek@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo -
Corrected description and fixed function of --quiet argument.
Signed-off-by: Petr Holasek
Reviewed-by: Ingo Molnar
Cc: Jiri Olsa
Link: http://lkml.kernel.org/r/1429198699-25039-2-git-send-email-pholasek@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo -
The futex-requeue benchmark can hang because of missing wakeups once the
benchmark is done, ie:[Run 1]: Requeued 1024 of 1024 threads in 0.3290 ms
perf: couldn't wakeup all tasks (135/1024)This bug, while perhaps suggesting missing wakeups in kernel futex code,
is merely a consequence of the crappy FUTEX_CMP_REQUEUE man page,
incorrectly mentioning that the number of requeued tasks is in fact
returned, not the wakeups.This patch acknowledges this and updates the corresponding futex_wake
code around it.Signed-off-by: Davidlohr Bueso
Cc: Mel Gorman
Link: http://lkml.kernel.org/r/1429894848.10273.44.camel@stgolabs.net
Signed-off-by: Arnaldo Carvalho de Melo -
There are missing curly braces which causes find_variable() return wrong
value when probing with global variables.This problem can be reproduced as following:
$ perf probe -v --add='generic_perform_write global_variable_for_test'
...
Try to find probe point from debuginfo.
Probe point found: generic_perform_write+0
Searching 'global_variable_for_test' variable in context.
An error occurred in debuginfo analysis (-2).
Error: Failed to add events. Reason: No such file or directory (Code: -2)After this patch:
$ perf probe -v --add='generic_perform_write global_variable_for_test'
...
Converting variable global_variable_for_test into trace event.
global_variable_for_test type is int.
Found 1 probe_trace_events.
Opening /sys/kernel/debug/tracing/kprobe_events write=1
Added new event:
Writing event: p:probe/generic_perform_write _stext+1237464
global_variable_for_test=@global_variable_for_test+0:s32
probe:generic_perform_write (on generic_perform_write with
global_variable_for_test)You can now use it in all perf tools, such as:
perf record -e probe:generic_perform_write -aR sleep 1
Signed-off-by: He Kuang
Acked-by: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Wang Nan
Link: http://lkml.kernel.org/r/1429949338-18678-1-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo -
Perf top raise a warning if a kernel sample is collected but kernel map
is restricted. The warning message needs to dereference al.map->dso...However, previous perf_event__preprocess_sample() doesn't always
guarantee al.map != NULL, for example, when kernel map is restricted.This patch validates al.map before dereferencing, avoid the segfault.
Before this patch:
$ cat /proc/sys/kernel/kptr_restrict
1
$ perf top -p 120183
perf: Segmentation fault
-------- backtrace --------
/path/to/perf[0x509868]
/lib64/libc.so.6(+0x3545f)[0x7f9a1540045f]
/path/to/perf[0x448820]
/path/to/perf(cmd_top+0xe3c)[0x44a5dc]
/path/to/perf[0x4766a2]
/path/to/perf(main+0x5f5)[0x42e545]
/lib64/libc.so.6(__libc_start_main+0xf4)[0x7f9a153ecbd4]
/path/to/perf[0x42e674]And gdb call trace:
Program received signal SIGSEGV, Segmentation fault.
perf_event__process_sample (machine=0xa44030, sample=0x7fffffffa4c0, evsel=0xa43b00, event=0x7ffff41c3000, tool=0x7fffffffa8a0)
at builtin-top.c:736
736 !RB_EMPTY_ROOT(&al.map->dso->symbols[MAP__FUNCTION]) ?
(gdb) bt
#0 perf_event__process_sample (machine=0xa44030, sample=0x7fffffffa4c0, evsel=0xa43b00, event=0x7ffff41c3000, tool=0x7fffffffa8a0)
at builtin-top.c:736
#1 perf_top__mmap_read_idx (top=top@entry=0x7fffffffa8a0, idx=idx@entry=0) at builtin-top.c:855
#2 0x000000000044a5dd in perf_top__mmap_read (top=0x7fffffffa8a0) at builtin-top.c:872
#3 __cmd_top (top=0x7fffffffa8a0) at builtin-top.c:997
#4 cmd_top (argc=, argv=, prefix=) at builtin-top.c:1267
#5 0x00000000004766a3 in run_builtin (p=p@entry=0x8a6ce8 , argc=argc@entry=3, argv=argv@entry=0x7fffffffdf70)
at perf.c:371
#6 0x000000000042e546 in handle_internal_command (argv=0x7fffffffdf70, argc=3) at perf.c:430
#7 run_argv (argv=0x7fffffffdcf0, argcp=0x7fffffffdcfc) at perf.c:474
#8 main (argc=3, argv=0x7fffffffdf70) at perf.c:589
(gdb)Signed-off-by: Wang Nan
Tested-by: Arnaldo Carvalho de Melo
Cc: David Ahern
Cc: Jiri Olsa
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Zefan Li
Link: http://lkml.kernel.org/r/1429946703-80807-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo
27 Apr, 2015
1 commit
-
Pull more power management and ACPI updates from Rafael Wysocki:
"These are fixes mostly (intel_pstate, ACPI core, ACPI EC driver,
cpupower tool), a new CPU ID for the Intel RAPL driver and one
intel_pstate driver improvement that didn't make it to my previous
pull requests due to timing.Specifics:
- Fix a build warning in the intel_pstate driver showing up in
non-SMP builds (Borislav Petkov)- Change one of the intel_pstate's P-state selection parameters for
Baytrail and Cherrytrail CPUs to significantly improve performance
at the cost of a small increase in energy consumption (Kristen
Carlson Accardi)- Fix a NULL pointer dereference in the ACPI EC driver due to an
unsafe list walk in the query handler removal routine (Chris
Bainbridge)- Get rid of a false-positive lockdep warning in the ACPI container
hot-remove code (Rafael J Wysocki)- Prevent the ACPI device enumeration code from creating device
objects of a wrong type in some cases (Rafael J Wysocki)- Add Skylake processors support to the Intel RAPL power capping
driver (Brian Bian)- Drop the stale MAINTAINERS entry for the ACPI dock driver that is
regarded as part of the ACPI core and maintained along with it now
(Chao Yu)- Fix cpupower tool breakage caused by a library API change in libpci
3.3.0 (Lucas Stach)"* tag 'pm+acpi-4.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / scan: Add a scan handler for PRP0001
ACPI / scan: Annotate physical_node_lock in acpi_scan_is_offline()
ACPI / EC: fix NULL pointer dereference in acpi_ec_remove_query_handler()
MAINTAINERS: remove maintainship entry of docking station driver
powercap / RAPL: Add support for Intel Skylake processors
cpufreq: intel_pstate: Fix an annoying !CONFIG_SMP warning
intel_pstate: Change the setpoint for Atom params
cpupower: fix breakage from libpci API change
24 Apr, 2015
5 commits
-
In my i386 build, it failed like this:
CC event-parse.o
event-parse.c: In function 'print_str_arg':
event-parse.c:3868:5: warning: format '%lu' expects argument of type 'long unsigned int',
but argument 3 has type 'uint64_t' [-Wformat]Signed-off-by: Namhyung Kim
Acked-by: Javi Merino
Link: http://lkml.kernel.org/r/20150424020218.GF1905@sejong
Signed-off-by: Arnaldo Carvalho de Melo -
0d68bc92c48 breaks compiles on RHEL6/OL6:
cc1: warnings being treated as errors
builtin-kmem.c: In function ‘search_page_alloc_stat’:
builtin-kmem.c:322: error: declaration of ‘stat’ shadows a global declaration
node = &parent->rb_left;
/usr/include/sys/stat.h:455: error: shadowed declaration is here
builtin-kmem.c: In function ‘perf_evsel__process_page_alloc_event’:
builtin-kmem.c:378: error: declaration of ‘stat’ shadows a global declaration
/usr/include/sys/stat.h:455: error: shadowed declaration is here
builtin-kmem.c: In function ‘perf_evsel__process_page_free_event’:
builtin-kmem.c:431: error: declaration of ‘stat’ shadows a global declaration
/usr/include/sys/stat.h:455: error: shadowed declaration is hereRename local variable to pstat to avoid the name conflict.
Signed-off-by: David Ahern
Link: http://lkml.kernel.org/r/1429033773-31383-1-git-send-email-david.ahern@oracle.com
Signed-off-by: Arnaldo Carvalho de Melo -
Some toolchains (like Hardened Gentoo) define _FORTIFY_SOURCE in the
built-in, default args. This causes perf builds to fail with::0:0: error: "_FORTIFY_SOURCE" redefined [-Werror]
: note: this is the location of the previous definition cc1:
all warnings being treated as errorsTo avoid this, undefine _FORTIFY_SOURCE before (possibly re-)defining it
in tools/lib/api.v2 applies cleanly on top of already pulled kbuild changes for 4.1-rc1.
Signed-off-by: Bobby Powers
Acked-by: Jiri Olsa
Cc: Dirk Gouders
Cc: Michal Marek
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: linux-kbuild@vger.kernel.org
Link: http://lkml.kernel.org/r/1429658381-3039-1-git-send-email-bobbypowers@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo -
Building the perf tool for 32-bit ARM results in the following build
error due to a combination of an incorrect conversion specifier and
compiling with -Werror:builtin-kmem.c: In function ‘print_page_summary’:
builtin-kmem.c:644:9: error: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 3 has type ‘u64’ [-Werror=format=]
nr_alloc_freed, (total_alloc_freed_bytes) / 1024);
^
builtin-kmem.c:647:9: error: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 3 has type ‘u64’ [-Werror=format=]
(total_page_alloc_bytes - total_alloc_freed_bytes) / 1024);
^
cc1: all warnings being treated as errorsThis patch fixes the problem by consistently using PRIu64 for printing
out u64 values.Signed-off-by: Will Deacon
Cc: David Ahern
Cc: Jiri Olsa
Cc: Joonsoo Kim
Cc: Minchan Kim
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1429796437-1790-1-git-send-email-will.deacon@arm.com
Signed-off-by: Arnaldo Carvalho de Melo -
We were not checking in the inner event processing loop if the forked workload
had finished, which, on a busy system, may make it take a long time trying to
drain events, entering a seemingly neverending loop, waiting for the system to
get idle enough to make it drain the buffers.Fix it by disabling the events when 'done' is true, in the inner loop, to start
draining what is in the buffers.Now:
[root@ssdandy ~]# time trace --filter-pids 14003 -a sleep 1 | tail
996.748 ( 0.002 ms): sh/30296 rt_sigprocmask(how: SETMASK, nset: 0x7ffc83418160, sigsetsize: 8) = 0
996.751 ( 0.002 ms): sh/30296 rt_sigprocmask(how: BLOCK, nset: 0x7ffc834181f0, oset: 0x7ffc83418270, sigsetsize: 8) = 0
996.755 ( 0.002 ms): sh/30296 rt_sigaction(sig: INT, act: 0x7ffc83417f50, oact: 0x7ffc83417ff0, sigsetsize: 8) = 0
1004.543 ( 0.362 ms): tail/30198 ... [continued]: read()) = 4096
1004.548 ( 7.791 ms): sh/30296 wait4(upid: -1, stat_addr: 0x7ffc834181a0) ...
1004.975 ( 0.427 ms): tail/30198 read(buf: 0x7633f0, count: 8192) = 4096
1005.390 ( 0.410 ms): tail/30198 read(buf: 0x765410, count: 8192) = 4096
1005.743 ( 0.348 ms): tail/30198 read(buf: 0x7633f0, count: 8192) = 4096
1006.197 ( 0.449 ms): tail/30198 read(buf: 0x765410, count: 8192) = 4096
1006.492 ( 0.290 ms): tail/30198 read(buf: 0x7633f0, count: 8192) = 4096real 0m1.219s
user 0m0.704s
sys 0m0.331s
[root@ssdandy ~]#Reported-by: Michael Petlan
Suggested-by: Jiri Olsa
Acked-by: Jiri Olsa
Cc: Adrian Hunter
Cc: Borislav Petkov
Cc: David Ahern
Cc: Don Zickus
Cc: Frederic Weisbecker
Cc: Namhyung Kim
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-p6kpn1b26qcbe47pufpw0tex@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
