16 Jan, 2012
1 commit
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* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits)
perf tools: Fix compile error on x86_64 Ubuntu
perf report: Fix --stdio output alignment when --showcpuutilization used
perf annotate: Get rid of field_sep check
perf annotate: Fix usage string
perf kmem: Fix a memory leak
perf kmem: Add missing closedir() calls
perf top: Add error message for EMFILE
perf test: Change type of '-v' option to INCR
perf script: Add missing closedir() calls
tracing: Fix compile error when static ftrace is enabled
recordmcount: Fix handling of elf64 big-endian objects.
perf tools: Add const.h to MANIFEST to make perf-tar-src-pkg work again
perf tools: Add support for guest/host-only profiling
perf kvm: Do guest-only counting by default
perf top: Don't update total_period on process_sample
perf hists: Stop using 'self' for struct hist_entry
perf hists: Rename total_session to total_period
x86: Add counter when debug stack is used with interrupts enabled
x86: Allow NMIs to hit breakpoints in i386
x86: Keep current stack in NMI breakpoints
...
11 Jan, 2012
1 commit
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We renamed the page-free mm tracepoints.
Signed-off-by: Konstantin Khlebnikov
Cc: Mel Gorman
Cc: KOSAKI Motohiro
Reviewed-by: Minchan Kim
Cc: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
08 Jan, 2012
9 commits
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The ctype.h include is not needed here and it breaks build on some systems (at
least 64bit Ubuntu 10.04) like below. Just get rid of it.CC util/trace-event-info.o
cc1: warnings being treated as errors
util/trace-event-info.c: In function ‘record_file’:
util/trace-event-info.c:192: error: implicit declaration of function ‘pwrite’
util/trace-event-info.c:192: error: nested extern declaration of ‘pwrite’
make: *** [util/trace-event-info.o] Error 1Cc: Ingo Molnar
Cc: Joerg Roedel
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1326035430-7621-1-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo -
Current perf report output is broken if --showcpuutilization is used.
Combination with -n and/or --show-total-period make things worse.
This patch fixes it as follows:before:
48.25% 48.25% 0.00% sleep [kernel.kallsyms] [k] trace_hardirqs_off
34.99% 34.99% 0.00% sleep [kernel.kallsyms] [k] __find_get_block_slow
15.99% 15.99% 0.00% sleep [kernel.kallsyms] [k] lock_release_holdtime
0.77% 0.77% 0.00% sleep [kernel.kallsyms] [k] native_write_msr_safeafter:
48.25% 48.25% 0.00% sleep [kernel.kallsyms] [k] trace_hardirqs_off
34.99% 34.99% 0.00% sleep [kernel.kallsyms] [k] __find_get_block_slow
15.99% 15.99% 0.00% sleep [kernel.kallsyms] [k] lock_release_holdtime
0.77% 0.77% 0.00% sleep [kernel.kallsyms] [k] native_write_msr_safeCc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1325957132-10600-8-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo -
The 'field_sep' variable is not set anywhere. Just remove the
conditional.Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1325957132-10600-7-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo -
The annotate command doesn't take non-option arguments.
In fact, it can take last argument as a symbol filter though, but that's
a special case and, IMHO, it should be discouraged in favor of the -s
option.Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1325957132-10600-6-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo -
The 'str' should be freed when sort_dimension__add() failed too.
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1325957132-10600-5-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo -
The setup_cpunode_map() calls opendir() but misses corresponding
closedir(). Add them.Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1325957132-10600-4-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo -
When a user tries to open so many events, perf_event_open syscall may
fail with EMFILE. Provide advise for that case.Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1325957132-10600-3-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo -
The '-v' option is usually defined via OPT_INCR not _INTEGER. Follow
the trend :).Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1325957132-10600-2-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo -
The get_script_path() calls opendir() but misses corresponding
closedir()'s. Add them.Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1325957132-10600-1-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo
07 Jan, 2012
7 commits
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* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (185 commits)
powerpc: fix compile error with 85xx/p1010rdb.c
powerpc: fix compile error with 85xx/p1023_rds.c
powerpc/fsl: add MSI support for the Freescale hypervisor
arch/powerpc/sysdev/fsl_rmu.c: introduce missing kfree
powerpc/fsl: Add support for Integrated Flash Controller
powerpc/fsl: update compatiable on fsl 16550 uart nodes
powerpc/85xx: fix PCI and localbus properties in p1022ds.dts
powerpc/85xx: re-enable ePAPR byte channel driver in corenet32_smp_defconfig
powerpc/fsl: Update defconfigs to enable some standard FSL HW features
powerpc: Add TBI PHY node to first MDIO bus
sbc834x: put full compat string in board match check
powerpc/fsl-pci: Allow 64-bit PCIe devices to DMA to any memory address
powerpc: Fix unpaired probe_hcall_entry and probe_hcall_exit
offb: Fix setting of the pseudo-palette for >8bpp
offb: Add palette hack for qemu "standard vga" framebuffer
offb: Fix bug in calculating requested vram size
powerpc/boot: Change the WARN to INFO for boot wrapper overlap message
powerpc/44x: Fix build error on currituck platform
powerpc/boot: Change the load address for the wrapper to fit the kernel
powerpc/44x: Enable CRASH_DUMP for 440x
...Fix up a trivial conflict in arch/powerpc/include/asm/cputime.h due to
the additional sparse-checking code for cputime_t. -
Fixes:
|make: *** No rule to make target `../../include/linux/const.h', needed by `builtin-annotate.o'. Stop.Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1324128938-17553-1-git-send-email-sebastian@breakpoint.cc
Signed-off-by: Sebastian Andrzej Siewior
Signed-off-by: Arnaldo Carvalho de Melo -
To restrict a counter to either host or guest mode this patch introduces
two new event modifiers: G and H.With G the counter is configured in guest-only mode and with H in
host-only mode.Cc: Gleb Natapov
Cc: Ingo Molnar
Cc: Joerg Roedel
Cc: Peter Zijlstra
Signed-off-by: Gleb Natapov
Signed-off-by: Joerg Roedel
Link: http://lkml.kernel.org/n/tip-or5aj3rghy9ngyg882z6kln9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Make use of exclude_guest and exlude_host in perf-kvm to do only
guest-only counting by default.Cc: Gleb Natapov
Cc: Ingo Molnar
Cc: Joerg Roedel
Cc: Peter Zijlstra
Signed-off-by: Gleb Natapov
Signed-off-by: Joerg Roedel
[ committer note: Moved perf_{guest,host} & event_attr_init to util.c ]
[ so as not to drag more stuff to the python binding]
Signed-off-by: Arnaldo Carvalho de Melo -
It will be recalculated at __hists__output_resort, to take into account
filters possibly applied by the TUI, etc.Since we do the percent math only for those entries that will appear on
the TUI instead of for _all_ the entries at decay time, updating it for
each sample makes the entries seem to decay faster when using the
navigation keys (since the screen will be refreshed), as we're not
coalescing the entries that are being batched to be merged at next
resort/decay time, but considering their periods.Bug introduced in 743eb86.
Reported-by: Ingo Molnar
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-k0d0rq9a8nqtkqohov8cir72@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Stop using this python/OOP convention, doesn't really helps. Will do
more from time to time till we get it cleaned up in all of /perf.Suggested-by: Thomas Gleixner
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-me4dyj6s5snh7jr8wb9gzt82@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Nowadays we do it per evsel, not per session (that may have multiple
evsels), so rename it to avoid confusion.Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-azsgomr5h4dmaudoogw48w49@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
04 Jan, 2012
5 commits
-
The --host option certainly enables host-data collection.
Cc: Avi Kivity
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Joerg Roedel
Cc: kvm@vger.kernel.org
Link: http://lkml.kernel.org/r/1317816084-18026-5-git-send-email-gleb@redhat.com
Signed-off-by: Gleb Natapov
Signed-off-by: Joerg Roedel
Signed-off-by: Arnaldo Carvalho de Melo -
As script_spec__delete() frees given struct script_spec it should not be
called if we failed to allocate the struct. Also it's the only caller of
the function, we can get rid of the function itself.Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1325000151-4463-4-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo -
The 'buf' should be freed when symbol wasn't found too.
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1325000151-4463-3-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo -
The get_ratio_color() returns appropriate color string based on @ratio.
It helps reducing code duplication.Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1325000151-4463-2-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo -
The 'size' cannot be 0 because it was set to 8 on the above line in case
it was 0 and never changed.Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1325000151-4463-1-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo
30 Dec, 2011
1 commit
-
Cc: Arnaldo Carvalho de Melo
Cc: Frederic Weisbecker
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Robert Richter
Link: http://lkml.kernel.org/n/tip-lfckuwbl8m1ykb7t9ydsxe4r@git.kernel.org
Signed-off-by: Ingo Molnar
24 Dec, 2011
14 commits
-
The current perf scripting facility only supports tracepoints. This
patch implements a generic perl handler to support other events than
tracepoints too.This patch introduces a function process_event() that is called by perf
for each sample. The function is called with byte streams as arguments
containing information about the event, its attributes, the sample and
raw data. Perl's unpack() function can easily be used for byte decoding.
The following is the default implementation for process_event() that can
also be generated with perf script:# Packed byte string args of process_event():
#
# $event: union perf_event util/event.h
# $attr: struct perf_event_attr linux/perf_event.h
# $sample: struct perf_sample util/event.h
# $raw_data: perf_sample->raw_data util/event.hsub process_event
{
my ($event, $attr, $sample, $raw_data) = @_;my @event = unpack("LSS", $event);
my @attr = unpack("LLQQQQQLLQQ", $attr);
my @sample = unpack("QLLQQQQQLL", $sample);
my @raw_data = unpack("C*", $raw_data);use Data::Dumper;
print Dumper \@event, \@attr, \@sample, \@raw_data;
}Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1323969824-9711-4-git-send-email-robert.richter@amd.com
Signed-off-by: Robert Richter
Signed-off-by: Arnaldo Carvalho de Melo -
This patch introduces the for_each_set_bit() macro and modifies feature
implementation to use it.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1323248577-11268-8-git-send-email-robert.richter@amd.com
Signed-off-by: Robert Richter
Signed-off-by: Arnaldo Carvalho de Melo -
The features HEADER_TRACE_INFO and HEADER_BUILD_ID are handled
different when writing the feature section. All other features are
simply disabled on failure and writing the section goes on without
returning an error. There is no reason for these special cases. This
patch unifies handling of the features.This should be ok since all features can be parsed independently.
Offset and size of a feature's block is stored in struct perf_file_
section right after the data block of perf.data (see perf_session__
write_header()). Thus, if a feature does not exist then other features
can be processed anyway.Also moving special code for HEADER_BUILD_ID out to write_build_id().
v2:
* perf record throws an error now if buildids may not be generated,
which can be disabled with the --no-buildid option.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1323248577-11268-6-git-send-email-robert.richter@amd.com
Signed-off-by: Robert Richter
Signed-off-by: Arnaldo Carvalho de Melo -
The default input file for perf report is not handled the same way as
perf record does it for its output file. This leads to unexpected
behavior of perf report, etc. E.g.:# perf record -a -e cpu-cycles sleep 2 | perf report | cat
failed to open perf.data: No such file or directory (try 'perf record' first)While perf record writes to a fifo, perf report expects perf.data to be
read. This patch changes this to accept fifos as input file.Applies to the following commands:
perf annotate
perf buildid-list
perf evlist
perf kmem
perf lock
perf report
perf sched
perf script
perf timechartAlso fixes char const* -> const char* type declaration for filename
strings.v2:
* Prevent potential null pointer access to input_name in
builtin-report.c. Needed due to removal of patch "perf report: Setup
browser if stdout is a pipe"Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1323248577-11268-5-git-send-email-robert.richter@amd.com
Signed-off-by: Robert Richter
Signed-off-by: Arnaldo Carvalho de Melo -
Needed for later changes. No modified functionality.
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1323248577-11268-4-git-send-email-robert.richter@amd.com
Signed-off-by: Robert Richter
Signed-off-by: Arnaldo Carvalho de Melo -
If filename is NULL there is an out-of-bound access to struct
perf_session if it would be used with perf_session__open(). Shouldn't
actually happen in current implementation as filename is always !NULL.
Fixing this by always null-terminating filename.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1323248577-11268-3-git-send-email-robert.richter@amd.com
Signed-off-by: Robert Richter
Signed-off-by: Arnaldo Carvalho de Melo -
A feature may be unknown if perf.data is created and parsed on different
perf tool versions. This should not stop the header to be processed,
instead continue processing it.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1323248577-11268-2-git-send-email-robert.richter@amd.com
Signed-off-by: Robert Richter
Signed-off-by: Arnaldo Carvalho de Melo -
Reducing duplication and line size by extending function names for
print and write from a single name.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1323248577-11268-7-git-send-email-robert.richter@amd.com
Signed-off-by: Robert Richter
Signed-off-by: Arnaldo Carvalho de Melo -
Now that we automatically point users at it, let's provide them some
guidance so that they hopefully don't just get mysterious EINVAL's
from the kernel.Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1324301972-22740-4-git-send-email-nelhage@nelhage.com
Signed-off-by: Nelson Elhage
[ committer note: Made it work after 50a682c ]
Signed-off-by: Arnaldo Carvalho de Melo -
This failure is most likely due to running up against the
kernel.perf_event_mlock_kb sysctl, so we can tell the user what to do to
fix the issue.Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1324301972-22740-3-git-send-email-nelhage@nelhage.com
Signed-off-by: Nelson Elhage
Signed-off-by: Arnaldo Carvalho de Melo -
I get such truncated annotation results in 'perf top':
: Disassembly of section .text: ▒
: ▒
: ffffffff810966a8 : ▒
4.94 : ffffffff810966a8: movslq %edi,%rdi ▒
3.70 : ffffffff810966ab: mov $0x13700,%rax ▒
0.00 : ffffffff810966b2: add -0x7e32cb00(,%rdi,8),%rax ▒
8.64 : ffffffff810966ba: mov 0x7e0(%rax),%eax ▒
82.72 : ffffffff810966c0: cltq ▒Note the missing 'retq' which is there in the original function:
ffffffff810966a8 :
ffffffff810966a8: 48 63 ff movslq %edi,%rdi
ffffffff810966ab: 48 c7 c0 00 37 01 00 mov $0x13700,%rax
ffffffff810966b2: 48 03 04 fd 00 35 cd add -0x7e32cb00(,%rdi,8),%rax
ffffffff810966b9: 81
ffffffff810966ba: 8b 80 e0 07 00 00 mov 0x7e0(%rax),%eax
ffffffff810966c0: 48 98 cltq
ffffffff810966c2: c3 retqffffffff810966c3 :
I'm using a fairly recent binutils:
GNU objdump version 2.21.51.0.6-2.fc16 20110118
AFAICS the bug is simply that sym->end points to the last byte
of the symbol in question - while objdump's --stop-address
expects the last byte plus 1 to disassemble the full range.Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/20111223130804.GA24305@elte.hu
Signed-off-by: Ingo Molnar
Signed-off-by: Arnaldo Carvalho de Melo -
This allows the thread name to be dispalyed when dumping
events:
myapp 25118 [000] 450385.538815: context-switches ...
myapp:worker 25119 [000] 450385.538894: context-switches ...Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1324578603-12762-4-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo -
This handles multithreaded processes with named threads when doing
system wide profiling: the comm for each thread is looked up allowing
them to be different from the thread group leader.v2:
- fixed sizeof arg to perf_event__get_comm_tgidCc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1324578603-12762-3-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo -
perf does not properly handle monitoring of processes with named threads.
For example:$ ps -C myapp -L
PID LWP TTY TIME CMD
25118 25118 ? 00:00:00 myapp
25118 25119 ? 00:00:00 myapp:workerperf record -e cs -c 1 -fo /tmp/perf.data -p 25118 -- sleep 10
perf report --stdio -i /tmp/perf.data
100.00% myapp:worker [kernel.kallsyms] [k] perf_event_task_sched_outThe process name is set to the name of the last thread it finds for the
process.The Problem:
perf-top and perf-record both create a thread_map of threads to be
monitored. That map is used in perf_event__synthesize_thread_map which
loops over the entries in thread_map and calls __event__synthesize_thread
to generate COMM and MMAP events.__event__synthesize_thread calls perf_event__synthesize_comm which opens
/proc/pid/status, reads the name of the task and its thread group id.
That's all fine. The problem is that it then reads /proc/pid/task and
generates COMM events for each task it finds - but using the name found
in /proc/pid/status where pid is the thread of interest.The end result (looping over thread_map + synthesizing comm events for
each thread each time) means the name of the last thread processed sets
the name for all threads in the process - which is not good for
multithreaded processes with named threads.The Fix:
perf_event__synthesize_comm has an input argument (full) that decides
whether to process task entries for each pid it is passed. It currently
never set to 0 (perf_event__synthesize_comm has a single caller and it
always passes the value 1). Let's fix that.Add the full input argument to __event__synthesize_thread which passes
it to perf_event__synthesize_comm. For thread/process monitoring set full
to 0 which means COMM and MMAP events are only generated for the pid
passed to it. For system wide monitoring set full to 1 so that COMM events
are generated for all threads in a process.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1324578603-12762-2-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo
22 Dec, 2011
1 commit
-
perf report does not take a command from command line.
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1323703017-6060-8-git-send-email-namhyung@gmail.com
Signed-off-by: Namhyung Kim
Signed-off-by: Arnaldo Carvalho de Melo
21 Dec, 2011
1 commit
-
Add new generic hw event: ref-cycles, which maps to
PERF_HW_COUNT_REF_CPUCYCLES:$ perf stat -e ref-cycles ls
Signed-off-by: Stephane Eranian
Signed-off-by: Peter Zijlstra
Link: http://lkml.kernel.org/r/1323559734-3488-5-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar
