08 Apr, 2011
2 commits
-
…-linus', 'irq-fixes-for-linus' and 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86-32, fpu: Fix FPU exception handling on non-SSE systems
x86, hibernate: Initialize mmu_cr4_features during boot
x86-32, NUMA: Fix ACPI NUMA init broken by recent x86-64 change
x86: visws: Fixup irq overhaul fallout* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: Clean up rebalance_domains() load-balance interval calculation* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86/mrst/vrtc: Fix boot crash in mrst_rtc_init()
rtc, x86/mrst/vrtc: Fix boot crash in rtc_read_alarm()* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
genirq: Fix cpumask leak in __setup_irq()* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf probe: Fix listing incorrect line number with inline function
perf probe: Fix to find recursively inlined function
perf probe: Fix multiple --vars options behavior
perf probe: Fix to remove redundant close
perf probe: Fix to ensure function declared file -
* 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6:
Fix common misspellings
06 Apr, 2011
5 commits
-
Fix a bug showing incorrect line number when a probe is put on the head of an
inline function. This patch updates find_perf_probe_point() and introduces new
rules to get correct line number.- If debuginfo doesn't have a correct file name, we shouldn't return line
number too, because, without file name, line number is meaningless.- If the address is in a function, it stores the function name and the offset
from the function entry.- If the address is on a line, it tries to get the relative line number from
the function entry line, except for the address is same as the entry
address of the function (in this case, the relative line number should
be 0).- If the address is in an inline function entry (call-site), it uses the
inline function call line number as the line on which the address is.- If the address is in an inline function body, it stores the inline
function name and offset from the inline function call site instead of the
(non-inlined) function.Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Lin Ming
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Masami Hiramatsu
Signed-off-by: Arnaldo Carvalho de Melo -
Fix die_find_inlinefunc() to return correct innermost inlined function
at given address. Without this fix, it returns the outermost inlined
function.Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Lin Ming
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Masami Hiramatsu
Signed-off-by: Arnaldo Carvalho de Melo -
Fix a bug that perf-probe fails to initialize libdwfl and shows incorrect error
when user gives multiple --vars options.Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Lin Ming
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Masami Hiramatsu
Signed-off-by: Arnaldo Carvalho de Melo -
Since dwfl_end() closes given fd with dwfl, caller doesn't need to close its fd
when finishing process.Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Lin Ming
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Masami Hiramatsu
Signed-off-by: Arnaldo Carvalho de Melo -
Fix to ensure function declared file matches given file name. This fixes
a potential bug.As I've commented on Lin Ming's fastpath enhancement, decl_file should
be checked on each probe point if user gives a probe point as func@file.Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Lin Ming
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Masami Hiramatsu
Signed-off-by: Arnaldo Carvalho de Melo
31 Mar, 2011
2 commits
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi
-
The default setting of perf record is to mmap 128 pages if the user
did not override with -m.However the page size may vary accross different architecture
settings, giving different default size between each.Moreover the kernel side still has a default max number of mlocked
pages of 512 kiB + 1 page for unprivileged users. 128 + 1 pages
with page size > 4096 overlaps this threshold.Thus, better adapt to this limitation and set the default number of
pages to fit those 512 kiB + 1 page.Signed-off-by: Frederic Weisbecker
Signed-off-by: Peter Zijlstra
Cc: Arnaldo Carvalho de Melo
Cc: Paul Mackerras
Cc: Stephane Eranian
LKML-Reference:
Signed-off-by: Ingo Molnar
30 Mar, 2011
5 commits
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Pick up these two commits from Arnaldo's perf/core tree:
ca6a42586fae: perf tools: Emit clearer message for sys_perf_event_open ENOENT return
c286c419c784: perf tools: Fixup exit path when not able to open eventsAs they are really fixes we want to have sooner than laer.
Signed-off-by: Ingo Molnar
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Fix the following build error:
GEN python/perf.so
In file included from util/evsel.h:10,
from util/python.c:6:
util/hist.h:106:18: error: newt.h: No such file or directory
error: command 'x86_64-pc-linux-gnu-gcc' failed with exit status 1
make: *** [python/perf.so] Error 1by passing BASIC_CFLAGS to setup.py. BASIC_CFLAGS variable contains
the -DNO_NEWT_SUPPORT switch which prevents building python c
extension with newt.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Stephane Eranian
LKML-Reference:
Signed-off-by: Robert Richter
Signed-off-by: Arnaldo Carvalho de Melo -
If symbol_conf.priv_size is not a multiple of "sizeof(u64)" we'll bus
error on sparc64 in symbol__new because the "struct symbol *" pointer
is computed by adding symbol_conf.priv_size to the memory allocated.We cannot isolate the fix to symbol__new and symbol__delete since the
private area is computed by subtracting the priv_size value from a
"struct symbol" pointer, so then the private area can still be
potentially unaligned.So, simply align the symbol_conf.priv_size value in symbol__init()
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: David S. Miller
Signed-off-by: Arnaldo Carvalho de Melo -
Resend of patch sent back in January 2011 in light of recent confusion around
unsupported events for a given platform.Improve sys_perf_event_open ENOENT return handling in top and record, just
like 5a3446b does for stat.Retry of Arnaldo's patch using ui_warning instead of die which allows the
fallback from hardware cycles to software clock.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: linux-kernel@vger.kernel.org
LKML-Reference:
Signed-off-by: David Ahern
[ committer note: Some adjustments to make it apply to newer codebase ]
Signed-off-by: Arnaldo Carvalho de Melo -
We have to deal with the TUI mode in perf top, so that we don't end up
with a garbled screen when, say, a non root user on a machine with a
paranoid setting (the default) tries to use 'perf top'.Introduce a ui__warning_paranoid() routine shared by top and record that
tells the user the valid values for /proc/sys/kernel/perf_event_paranoid.Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo
29 Mar, 2011
1 commit
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Perf can't currently trace into the vsyscall page. It looks like it was
meant to work.Tested on 2.6.38 and today's -git.
The bug is easy to reproduce. Compile this:
int main()
{
int i;
struct timespec t;
for(i = 0; i < 10000000; i++)
clock_gettime(CLOCK_MONOTONIC, &t);
return 0;
}and run it through perf record; perf report. The top entry shows
"[unknown]" and you can't zoom in.It looks like there are two issues. The first is a that a test for user
mode executing in kernel space is backwards. (That's the first hunk
below). The second (I think) is that something's wrong with the code
that generates lots of little struct dso objects for different sections
-- when it runs on vmlinux it results in bogus long_name values which
cause objdump to fail.Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LPU-Reference:
Signed-off-by: Andy Lutomirski
Signed-off-by: Arnaldo Carvalho de Melo
26 Mar, 2011
1 commit
-
…/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf, x86: Complain louder about BIOSen corrupting CPU/PMU state and continue
perf, x86: P4 PMU - Read proper MSR register to catch unflagged overflows
perf symbols: Look at .dynsym again if .symtab not found
perf build-id: Add quirk to deal with perf.data file format breakage
perf session: Pass evsel in event_ops->sample()
perf: Better fit max unprivileged mlock pages for tools needs
perf_events: Fix stale ->cgrp pointer in update_cgrp_time_from_cpuctx()
perf top: Fix uninitialized 'counter' variable
tracing: Fix set_ftrace_filter probe function display
perf, x86: Fix Intel fixed counters base initialization
24 Mar, 2011
3 commits
-
The original intent of the code was to repeat the search with
want_symtab = 0. But as the code stands now, we never hit the "default"
case of the switch statement. Which means we never repeat the search.Tested-by: Srikar Dronamraju
Reported-by: Arun Sharma
Reported-by: Srikar Dronamraju
Cc: Dave Martin
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo -
The a1645ce1 changeset:
"perf: 'perf kvm' tool for monitoring guest performance from host"
Added a field to struct build_id_event that broke the file format.
Since the kernel build-id is the first entry, process the table using
the old format if the well known '[kernel.kallsyms]' string for the
kernel build-id has the first 4 characters chopped off (where the pid_t
sits).Reported-by: Han Pingtian
Cc: Avi Kivity
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
Cc: Zhang Yanmin
Cc: stable@kernel.org
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo -
Resolving the sample->id to an evsel since the most advanced tools,
report and annotate, and the others will too when they evolve to
properly support multi-event perf.data files.Good also because it does an extra validation, checking that the ID is
valid when present. When that is not the case, the overhead is just a
branch + function call (perf_evlist__id2evsel).Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo
23 Mar, 2011
1 commit
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builtin-top.c has an uninitialized variable.
gcc(version 4.5.1) warns about it and it results in build failure:builtin-top.c: In function 'display_thread':
builtin-top.c:518:9: error: 'counter' may be used uninitializedThis situation can indeed trigger, if the getline() call in
prompt_integer() fails.Signed-off-by: Akihiro Nagai
Cc: Arnaldo Carvalho de Melo
Cc: Masami Hiramatsu
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Ingo Molnar
22 Mar, 2011
1 commit
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-ktest:
ktest: Add STOP_TEST_AFTER to stop the test after a period of time
ktest: Monitor kernel while running of user tests
ktest: Fix bug where the test would not end after failure
ktest: Add BISECT_FILES to run git bisect on paths
ktest: Add BISECT_SKIP
ktest: Add manual bisect
ktest: Handle kernels before make oldnoconfig
ktest: Start failure timeout on panic too
ktest: Print logfile name on failure
19 Mar, 2011
1 commit
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…/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (30 commits)
trace, filters: Initialize the match variable in process_ops() properly
trace, documentation: Fix branch profiling location in debugfs
oprofile, s390: Cleanups
oprofile, s390: Remove hwsampler_files.c and merge it into init.c
perf: Fix tear-down of inherited group events
perf: Reorder & optimize perf_event_context to remove alignment padding on 64 bit builds
perf: Handle stopped state with tracepoints
perf: Fix the software events state check
perf, powerpc: Handle events that raise an exception without overflowing
perf, x86: Use INTEL_*_CONSTRAINT() for all PEBS event constraints
perf, x86: Clean up SandyBridge PEBS events
perf lock: Fix sorting by wait_min
perf tools: Version incorrect with some versions of grep
perf evlist: New command to list the names of events present in a perf.data file
perf script: Add support for H/W and S/W events
perf script: Add support for dumping symbols
perf script: Support custom field selection for output
perf script: Move printing of 'common' data from print_event and rename
perf tracing: Remove print_graph_cpu and print_graph_proc from trace-event-parse
perf script: Change process_event prototype
...
17 Mar, 2011
1 commit
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* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (172 commits)
USB: Add support for SuperSpeed isoc endpoints
xhci: Clean up cycle bit math used during stalls.
xhci: Fix cycle bit calculation during stall handling.
xhci: Update internal dequeue pointers after stalls.
USB: Disable auto-suspend for USB 3.0 hubs.
USB: Remove bogus USB_PORT_STAT_SUPER_SPEED symbol.
xhci: Return canceled URBs immediately when host is halted.
xhci: Fixes for suspend/resume of shared HCDs.
xhci: Fix re-init on power loss after resume.
xhci: Make roothub functions deal with device removal.
xhci: Limit roothub ports to 15 USB3 & 31 USB2 ports.
xhci: Return a USB 3.0 hub descriptor for USB3 roothub.
xhci: Register second xHCI roothub.
xhci: Change xhci_find_slot_id_by_port() API.
xhci: Refactor bus suspend state into a struct.
xhci: Index with a port array instead of PORTSC addresses.
USB: Set usb_hcd->state and flags for shared roothubs.
usb: Make core allocate resources per PCI-device.
usb: Store bus type in usb_hcd, not in driver flags.
usb: Change usb_hcd->bandwidth_mutex to a pointer.
...
16 Mar, 2011
5 commits
-
If lock was uncontended, wait_time_min == ULLONG_MAX, so we need to
handle this case differently to show high wait times firstAcked-by: Hitoshi Mitake
Cc: Hitoshi Mitake
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Marcin Slusarz
Signed-off-by: Arnaldo Carvalho de Melo -
Some versions of grep don't treat '\s' properly. When building perf on such
systems and using a kernel tarball the perf version is unable to be determined
from the main kernel Makefile and the user is left with a version of '..'.
Replacing the use of '\s' with '[[:space:]]', which should work in all grep
versions, gives a usable version number.Reported-by: Tapan Dhimant
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Tapan Dhimant
Cc: linux-kernel@vger.kernel.org
Cc: stable@kernel.org
LKML-Reference:
Signed-off-by: Josh Hunt
Signed-off-by: Arnaldo Carvalho de Melo -
…inux-2.6 into perf/urgent
-
…git/tip/linux-2.6-tip
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (184 commits)
perf probe: Clean up probe_point_lazy_walker() return value
tracing: Fix irqoff selftest expanding max buffer
tracing: Align 4 byte ints together in struct tracer
tracing: Export trace_set_clr_event()
tracing: Explain about unstable clock on resume with ring buffer warning
ftrace/graph: Trace function entry before updating index
ftrace: Add .ref.text as one of the safe areas to trace
tracing: Adjust conditional expression latency formatting.
tracing: Fix event alignment: skb:kfree_skb
tracing: Fix event alignment: mce:mce_record
tracing: Fix event alignment: kvm:kvm_hv_hypercall
tracing: Fix event alignment: module:module_request
tracing: Fix event alignment: ftrace:context_switch and ftrace:wakeup
tracing: Remove lock_depth from event entry
perf header: Stop using 'self'
perf session: Use evlist/evsel for managing perf.data attributes
perf top: Don't let events to eat up whole header line
perf top: Fix events overflow in top command
ring-buffer: Remove unused #include <linux/trace_irq.h>
tracing: Add an 'overwrite' trace_option.
... -
Newer compilers (gcc 4.6) complains about:
return ret < 0 ?: 0;
For the following reason:
util/probe-finder.c: In function ‘probe_point_lazy_walker’:
util/probe-finder.c:1331:18: error: the omitted middle operand in ?: will always be ‘true’, suggest explicit middle operand [-Werror=parentheses]And indeed the return value is a somewhat obscure (but correct) value
of 'true', so return 'ret' instead - this is cleaner and unconfuses
GCC as well.Cc: Arnaldo Carvalho de Melo
Cc: Masami Hiramatsu
Cc: Frederic Weisbecker
Cc: Masami Hiramatsu
Cc: Peter Zijlstra
LKML-Reference:
Signed-off-by: Ingo Molnar
15 Mar, 2011
8 commits
-
[root@emilia ~]# perf record -a -e sched:* -e timer:timer* sleep 5
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.172 MB perf.data (~7530 samples) ]
[root@emilia ~]# perf evlist
sched:sched_kthread_stop
sched:sched_kthread_stop_ret
sched:sched_wakeup
sched:sched_wakeup_new
sched:sched_switch
sched:sched_migrate_task
sched:sched_process_free
sched:sched_process_exit
sched:sched_wait_task
sched:sched_process_wait
sched:sched_process_fork
sched:sched_stat_wait
sched:sched_stat_sleep
sched:sched_stat_iowait
sched:sched_stat_runtime
sched:sched_pi_setprio
timer:timer_init
timer:timer_start
timer:timer_expire_entry
timer:timer_expire_exit
timer:timer_cancel
[root@emilia ~]#Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo -
Custom fields set for each type by prepending field argument with type.
For file with multiple event types (e.g., trace and S/W) display of an
event type suppressed by setting output fields to "".e.g.,
perf record -ga -e sched:sched_switch -e cpu-clock -c 10000000 -R -- sleep 1
perf scriptopenssl 11496 [000] 9711.807107: cpu-clock-msecs:
ffffffff810c22dc arch_local_irq_restore ([kernel.kallsyms])
ffffffff810c518c __alloc_pages_nodemask ([kernel.kallsyms])
ffffffff810297b2 pte_alloc_one ([kernel.kallsyms])
ffffffff810d8b98 __pte_alloc ([kernel.kallsyms])
ffffffff810daf07 handle_mm_fault ([kernel.kallsyms])
ffffffff8138763a do_page_fault ([kernel.kallsyms])
ffffffff81384a65 page_fault ([kernel.kallsyms])
7f6130507d70 asn1_check_tlen (/lib64/libcrypto.so.1.0.0c)
0 ()openssl 11496 [000] 9711.808042: sched_switch: prev_comm=openssl ...
kworker/0:0 4 [000] 9711.808067: sched_switch: prev_comm=kworker/...
swapper 0 [001] 9711.808090: sched_switch: prev_comm=kworker/...
sshd 11451 [001] 9711.808185: sched_switch: prev_comm=sshd pre...
swapper 0 [001] 9711.816155: cpu-clock-msecs:
ffffffff81023609 native_safe_halt ([kernel.kallsyms])
ffffffff8100132a cpu_idle ([kernel.kallsyms])
ffffffff8137cf9b start_secondary ([kernel.kallsyms])openssl 11496 [000] 9711.817104: cpu-clock-msecs:
7f61304ad723 AES_cbc_encrypt (/lib64/libcrypto.so.1.0.0c)
7fff3402f950 ()
12f0debc9a785634 ()swapper 0 [001] 9711.826155: cpu-clock-msecs:
ffffffff81023609 native_safe_halt ([kernel.kallsyms])
ffffffff8100132a cpu_idle ([kernel.kallsyms])
ffffffff8137cf9b start_secondary ([kernel.kallsyms])To suppress trace events within the file and use default output for S/W events:
perf script -f trace:or to suppress S/W events and do default display for trace events:
perf script -f sw:Custom field selections:
perf script -f sw:comm,tid,time -f trace:time,traceopenssl 11496 9711.797162:
swapper 0 9711.807071:
openssl 11496 9711.807107:
9711.808042: prev_comm=openssl prev_pid=11496 prev_prio=120 prev_state=R ...
9711.808067: prev_comm=kworker/0:0 prev_pid=4 prev_prio=120 prev_state=S ...
9711.808090: prev_comm=kworker/0:0 prev_pid=0 prev_prio=120 prev_state=R ...
9711.808185: prev_comm=sshd prev_pid=11451 prev_prio=120 prev_state=S ==>...
swapper 0 9711.816155:
openssl 11496 9711.817104:
swapper 0 9711.826155:Acked-by: Frederic Weisbecker
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
LKML-Reference:
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo -
Add option to dump symbols found in events.
e.g., perf script -f comm,pid,tid,time,trace,sym
swapper 0/0 537.037184: prev_comm=swapper prev_pid=0 prev_prio=120...
ffffffff81030350 perf_trace_sched_switch ([kernel.kallsyms])
ffffffff81382ac5 schedule ([kernel.kallsyms])
ffffffff8100134a cpu_idle ([kernel.kallsyms])
ffffffff81370b39 rest_init ([kernel.kallsyms])
ffffffff81696c23 start_kernel ([kernel.kallsyms].init.text)
ffffffff816962af x86_64_start_reservations ([kernel.kallsyms].init.text)
ffffffff816963b9 x86_64_start_kernel ([kernel.kallsyms].init.text)sshd 1675/1675 537.037309: prev_comm=sshd prev_pid=1675 prev_prio=120...
ffffffff81030350 perf_trace_sched_switch ([kernel.kallsyms])
ffffffff81382ac5 schedule ([kernel.kallsyms])
ffffffff813837aa schedule_hrtimeout_range_clock ([kernel.kallsyms])
ffffffff81383886 schedule_hrtimeout_range ([kernel.kallsyms])
ffffffff8110c4f9 poll_schedule_timeout ([kernel.kallsyms])
ffffffff8110cd20 do_select ([kernel.kallsyms])
ffffffff8110ced8 core_sys_select ([kernel.kallsyms])
ffffffff8110d00d sys_select ([kernel.kallsyms])
ffffffff81002bc2 system_call ([kernel.kallsyms])
7f1647e56e93 __GI_select (/lib64/libc-2.12.90.so)netstat 1692/1692 537.038664: prev_comm=netstat prev_pid=1692 prev_prio=...
ffffffff81030350 perf_trace_sched_switch ([kernel.kallsyms])
ffffffff81382ac5 schedule ([kernel.kallsyms])
ffffffff81002c3a sysret_careful ([kernel.kallsyms])
7f7a6cd1b210 __GI___libc_read (/lib64/libc-2.12.90.so)Acked-by: Frederic Weisbecker
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
LKML-Reference:
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo -
Allow a user to select which fields to print to stdout for event data.
Options include comm (command name), tid (thread id), pid (process id),
time (perf timestamp), cpu, event (for event name), and trace (for
trace data).Default is set to maintain compatibility with current output; this
feature does alter output format slightly -- no '-' between command
and pid/tid.Thanks to Frederic Weisbecker for detailed suggestions on this approach.
Examples (output compressed)
1. trace, default format
perf record -ga -e sched:sched_switch
perf scriptswapper 0 [000] 537.037184: sched_switch: prev_comm=swapper prev_pid=0...
sshd 1675 [000] 537.037309: sched_switch: prev_comm=sshd prev_pid=1675...
netstat 1692 [001] 537.038664: sched_switch: prev_comm=netstat prev_pid=1692...2. trace, custom format
perf record -ga -e sched:sched_switch
perf script -f comm,pid,time,trace
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
LKML-Reference:
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo -
This change does impact output: latency data is trace specific and is
now printed after the common data - comm, tid, cpu, time and event name.Acked-by: Frederic Weisbecker
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
LKML-Reference:
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo -
Next patch moves printing of 'common' data into perf-script which
removes the need for these functions.Acked-by: Frederic Weisbecker
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
LKML-Reference:
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo -
Prepare for handling of samples for any event type.
Acked-by: Frederic Weisbecker
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Thomas Gleixner
LKML-Reference:
Signed-off-by: David Ahern
Signed-off-by: Arnaldo Carvalho de Melo -
Now the --filter option is usable with perf stat too.
Cc: Ingo Molnar
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
LKML-Reference:
Signed-off-by: Frederic Weisbecker
Signed-off-by: Arnaldo Carvalho de Melo
12 Mar, 2011
4 commits
-
While going thru each of the sym_entry fields looking to reduce it to
the set of entries needed when in an active symbols list, 'skip' should
really be in symbol, as we set it when loading the symtab.And the space used by the basic symbol allocation remains the same as
we had 5 bytes of padding.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo -
And the DSO__ORIG_ enum to SYMTAB__, to clarify that this is about from
where the symtab was obtained.Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo -
We can get it from syme->map->dso->kernel (that should be renamed to
origin, but leave this for another patch).Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo -
We can get that counter index from perf_top->sym_evsel->idx instead.
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo