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perf/core has an earlier version of the x86/cpu tree merged, to avoid
conflicts, and due to this we want to pick up this ABI impacting
revert as well:
049331f277fe: ("x86/fsgsbase: Revert FSGSBASE support")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The FSGSBASE series turned out to have serious bugs and there is still an
open issue which is not fully understood yet.
The confidence in those changes has become close to zero especially as the
test cases which have been shipped with that series were obviously never
run before sending the final series out to LKML.
./fsgsbase_64 >/dev/null
Segmentation fault
As the merge window is close, the only sane decision is to revert FSGSBASE
support. The revert is necessary as this branch has been merged into
perf/core already and rebasing all of that a few days before the merge
window is not the most brilliant idea.
I could definitely slap myself for not noticing the test case fail when
merging that series, but TBH my expectations weren't that low back
then. Won't happen again.
Revert the following commits:
539bca535dec ("x86/entry/64: Fix and clean up paranoid_exit")
2c7b5ac5d5a9 ("Documentation/x86/64: Add documentation for GS/FS addressing mode")
f987c955c745 ("x86/elf: Enumerate kernel FSGSBASE capability in AT_HWCAP2")
2032f1f96ee0 ("x86/cpu: Enable FSGSBASE on 64bit by default and add a chicken bit")
5bf0cab60ee2 ("x86/entry/64: Document GSBASE handling in the paranoid path")
708078f65721 ("x86/entry/64: Handle FSGSBASE enabled paranoid entry/exit")
79e1932fa3ce ("x86/entry/64: Introduce the FIND_PERCPU_BASE macro")
1d07316b1363 ("x86/entry/64: Switch CR3 before SWAPGS in paranoid entry")
f60a83df4593 ("x86/process/64: Use FSGSBASE instructions on thread copy and ptrace")
1ab5f3f7fe3d ("x86/process/64: Use FSBSBASE in switch_to() if available")
a86b4625138d ("x86/fsgsbase/64: Enable FSGSBASE instructions in helper functions")
8b71340d702e ("x86/fsgsbase/64: Add intrinsics for FSGSBASE instructions")
b64ed19b93c3 ("x86/cpu: Add 'unsafe_fsgsbase' to enable CR4.FSGSBASE")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Chang S. Bae <chang.seok.bae@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ravi Shankar <ravi.v.shankar@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
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This refactors do_unexpected_base() to clean up some code. It also
fixes the following bugs in test_ptrace_write_gsbase():
- Incorrect printf() format string caused crashes.
- Hardcoded 0x7 for the gs selector was not reliably correct.
It also documents the fact that the test is expected to fail on old
kernels.
Fixes: a87730cc3acc ("selftests/x86/fsgsbase: Test ptracer-induced GSBASE write with FSGSBASE")
Fixes: 1b6858d5a2eb ("selftests/x86/fsgsbase: Test ptracer-induced GSBASE write")
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "BaeChang Seok" <chang.seok.bae@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: "BaeChang Seok" <chang.seok.bae@intel.com>
Link: https://lkml.kernel.org/r/bab29c84f2475e2c30ddb00f1b877fcd7f4f96a8.1562125333.git.luto@kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
perf metrics:
Andi Kleen:
- Fixes for SkylakeX and CascadeLakeX Intel vendor events.
- Avoid extra ':' for --raw metrics.
- Don't include duration_time in group.
perf script:
Arnaldo Carvalho de Melo/Jiri Olsa:
- Fix processing guest samples.
perf diff:
Jin Yao:
- Do diffs by basic blocks.
objtool:
Jiri Olsa:
- Fix build by linking against tools/lib/ctype.o sources.
perf pmu:
John Garry:
- Support more complex PMU event aliasing.
- Add support for Hisi hip08 DDRC, HHA and L3C PMU aliasing.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
perf annotate:
Mao Han:
- Add support for the csky processor architecture.
perf stat:
Andi Kleen:
- Fix metrics with --no-merge.
- Don't merge events in the same PMU.
- Fix group lookup for metric group.
Intel PT:
Adrian Hunter:
- Improve CBR (Core to Bus Ratio) packets support.
- Fix thread stack return from kernel for kernel only case.
- Export power and ptwrite events to sqlite and postgresql.
core libraries:
Arnaldo Carvalho de Melo:
- Find routines in tools/perf/util/ that have implementations in the kernel
libraries (lib/*.c), such as strreplace(), strim(), skip_spaces() and reuse
them after making a copy into tools/lib and tools/include/.
This continues the effort of having tools/ code looking as much as possible
like kernel source code, to help encourage people to work on both the kernel
and in tools hosted in the kernel sources.
That in turn will help moving stuff that uses those routines to
tools/lib/perf/ where they will be made available for use in other tools.
In the process ditch old cruft, remove unused variables and add missing
include directives for headers providing things used in places that were
building by sheer luck.
Kyle Meyer:
- Bump MAX_NR_CPUS and MAX_CACHES to get these tools to work on more machines.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The 'perf kvm' command set up things so that we can record, report, top,
etc, but not 'script', so make 'perf script' be able to process samples
by allowing to pass guest kallsyms, vmlinux, modules, etc, and if at
least one of those is provided, set perf_guest to true so that guest
samples get properly resolved.
Testing it:
# perf kvm --guest --guestkallsyms /wb/rhel6.kallsyms --guestmodules /wb/rhel6.modules record -e cycles:Gk
^C[ perf record: Woken up 7 times to write data ]
[ perf record: Captured and wrote 3.602 MB perf.data.guest (10492 samples) ]
#
# perf evlist -i perf.data.guest
cycles:Gk
# perf evlist -v -i perf.data.guest
cycles:Gk: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CPU|PERIOD, read_format: ID, disabled: 1, inherit: 1, exclude_user: 1, exclude_hv: 1, mmap: 1, comm: 1, freq: 1, task: 1, sample_id_all: 1, exclude_host: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1
#
# perf kvm --guestkallsyms /wb/rhel6.kallsyms --guestmodules /wb/rhel6.modules report --stdio -s sym | head -30
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 10K of event 'cycles:Gk'
# Event count (approx.): 2434201408
#
# Overhead Symbol
# ........ ..............................................
#
11.93% [g] avtab_search_node
3.95% [g] sidtab_context_to_sid
2.41% [g] n_tty_write
2.20% [g] _spin_unlock_irqrestore
1.37% [g] _aesni_dec4
1.33% [g] kmem_cache_alloc
1.07% [g] native_write_cr0
0.99% [g] kfree
0.95% [g] _spin_lock
0.91% [g] __memset
0.87% [g] schedule
0.83% [g] _spin_lock_irqsave
0.76% [g] __kmalloc
0.67% [g] avc_has_perm_noaudit
0.66% [g] kmem_cache_free
0.65% [g] glue_xts_crypt_128bit
0.59% [g] __d_lookup
0.59% [g] __audit_syscall_exit
0.56% [g] __memcpy
#
Then, when trying to use perf script to generate a python script and
then process the events after adding a python hook for non-tracepoint
events:
# perf script -i perf.data.guest -g python
generated Python script: perf-script.py
# vim perf-script.py
# tail -2 perf-script.py
def process_event(param_dict):
print(param_dict["symbol"])
#
# perf script -i perf.data.guest -s perf-script.py | head
in trace_begin
vmx_vmexit
vmx_vmexit
vmx_vmexit
vmx_vmexit
vmx_vmexit
vmx_vmexit
vmx_vmexit
vmx_vmexit
vmx_vmexit
231
#
We'd see just the vmx_vmexit, i.e. the samples from the guest don't show
up.
After this patch:
# perf script --guestkallsyms /wb/rhel6.kallsyms --guestmodules /wb/rhel6.modules -i perf.data.guest -s perf-script.py 2> /dev/null | head -30
in trace_begin
apic_timer_interrupt
apic_timer_interrupt
apic_timer_interrupt
apic_timer_interrupt
apic_timer_interrupt
save_args
do_timer
drain_array
inode_permission
avc_has_perm_noaudit
run_timer_softirq
apic_timer_interrupt
apic_timer_interrupt
apic_timer_interrupt
apic_timer_interrupt
apic_timer_interrupt
kvm_guest_apic_eoi_write
run_posix_cpu_timers
_spin_lock
handle_pte_fault
rcu_irq_enter
delay_tsc
delay_tsc
native_read_tsc
apic_timer_interrupt
sys_open
internal_add_timer
list_del
rcu_exit_nohz
#
Jiri Olsa noticed we need to set 'perf_guest' to true if we want to
process guest samples and I made it be set if one of the guest files
settings get set via the command line options added in this patch, that
match those present in the 'perf kvm' command.
We probably want to have 'perf record', 'perf report' etc to notice that
there are guest samples and do the right thing, which is to look for
files with some suffix that make it be associated with the guest used to
collect the samples, i.e. if a vmlinux file is passed, we can get the
build-id from it, if not some other identifier or simply looking for
"kallsyms.guest", for instance, in the current directory.
Reported-by: Mariano Pache <npache@redhat.com>
Tested-by: Mariano Pache <npache@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Cc: Ali Raza <alirazabhutta.10@gmail.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Joe Mario <jmario@redhat.com>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Orran Krieger <okrieger@redhat.com>
Cc: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: Yunlong Song <yunlong.song@huawei.com>
Link: https://lkml.kernel.org/n/tip-d54gj64rerlxcqsrod05biwn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The Memory_BW metric generates groups including duration_time, which
maps to a software event.
For some reason this makes the group always not count.
Always put duration_time outside a group when generating metrics. It's
always the same time, so no need to group it.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20190628220737.13259-3-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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When printing the metrics raw, don't print : after the metricgroups.
This helps the command line completion to complete those too.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20190628220737.13259-2-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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- Add a missing filter for the DRAM_Latency / DRAM_Parallel_Reads metrics
- Remove the useless PMM_* metrics from Skylake
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20190628220737.13259-1-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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- Fix a typo in the man page
- Fix a tip that doesn't make any sense.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20190628220900.13741-1-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Add support for Hisi hip08 L3C PMU aliasing.
The kernel driver is in drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c
Signed-off-by: John Garry <john.garry@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Hendrik Brueckner <brueckner@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxarm@huawei.com
Link: http://lkml.kernel.org/r/1561732552-143038-5-git-send-email-john.garry@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Add support for Hisi hip08 HHA PMU aliasing.
The kernel driver is in drivers/perf/hisilicon/hisi_uncore_hha_pmu.c
Signed-off-by: John Garry <john.garry@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Hendrik Brueckner <brueckner@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxarm@huawei.com
Link: http://lkml.kernel.org/r/1561732552-143038-4-git-send-email-john.garry@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Add support for Hisi hip08 DDRC PMU aliasing. We can now do something like
this:
$perf list
[snip]
uncore ddrc:
uncore_hisi_ddrc.act_cmd
[DDRC active commands. Unit: hisi_sccl,ddrc]
uncore_hisi_ddrc.flux_rcmd
[DDRC read commands. Unit: hisi_sccl,ddrc]
uncore_hisi_ddrc.flux_wcmd
[DDRC write commands. Unit: hisi_sccl,ddrc]
uncore_hisi_ddrc.flux_wr
[DDRC precharge commands. Unit: hisi_sccl,ddrc]
uncore_hisi_ddrc.rnk_chg
[DDRC rank commands. Unit: hisi_sccl,ddrc]
uncore_hisi_ddrc.rw_chg
[DDRC read and write changes. Unit: hisi_sccl,ddrc]
Performance counter stats for 'system wide':
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl1_ddrc0]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl3_ddrc1]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl5_ddrc2]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl7_ddrc3]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl5_ddrc0]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl7_ddrc1]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl1_ddrc3]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl1_ddrc1]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl3_ddrc2]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl5_ddrc3]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl3_ddrc0]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl5_ddrc1]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl7_ddrc2]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl7_ddrc0]
20,421 uncore_hisi_ddrc.flux_rcmd [hisi_sccl1_ddrc2]
0 uncore_hisi_ddrc.flux_rcmd [hisi_sccl3_ddrc3]
1.001559011 seconds time elapsed
The kernel driver is in drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c
Signed-off-by: John Garry <john.garry@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Hendrik Brueckner <brueckner@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxarm@huawei.com
Link: http://lkml.kernel.org/r/1561732552-143038-3-git-send-email-john.garry@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The jevent "Unit" field is used for uncore PMU alias definition.
The form uncore_pmu_example_X is supported, where "X" is a wildcard, to
support multiple instances of the same PMU in a system.
Unfortunately this format not suitable for all uncore PMUs; take the
Hisi DDRC uncore PMU for example, where the name is in the form
hisi_scclX_ddrcY.
For for current jevent parsing, we would be required to hardcode an
uncore alias translation for each possible value of X. This is not
scalable.
Instead, add support for "Unit" field in the form "hisi_sccl,ddrc",
where we can match by hisi_scclX and ddrcY. Tokens in Unit field are
delimited by ','.
Signed-off-by: John Garry <john.garry@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Hendrik Brueckner <brueckner@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxarm@huawei.com
Link: http://lkml.kernel.org/r/1561732552-143038-2-git-send-email-john.garry@huawei.com
[ Shut up older gcc complianing about the last arg to strtok_r() being uninitialized, set that tmp to NULL ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Documentation the new computation selection 'cycles'.
v4:
---
Change the column 'Block cycles diff [start:end]' to
'[Program Block Range] Cycles Diff'
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1561713784-30533-8-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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$ perf record -b ./div
$ perf record -b ./div
Following is the default perf diff output
$ perf diff
# Event 'cycles'
#
# Baseline Delta Abs Shared Object Symbol
# ........ ......... ................ ..................................
#
48.75% +0.33% div [.] main
8.21% -0.20% div [.] compute_flag
19.02% -0.12% libc-2.23.so [.] __random_r
16.17% -0.09% libc-2.23.so [.] __random
2.27% -0.03% div [.] rand@plt
+0.02% [i915] [k] gen8_irq_handler
5.52% +0.02% libc-2.23.so [.] rand
This patch creates a new computation selection 'cycles'.
$ perf diff -c cycles
# Event 'cycles'
#
# Baseline [Program Block Range] Cycles Diff Shared Object Symbol
# ........ ....................................... .........................................
#
48.75% [div.c:42 -> div.c:45] 147 div [.] main
48.75% [div.c:31 -> div.c:40] 4 div [.] main
48.75% [div.c:40 -> div.c:40] 0 div [.] main
48.75% [div.c:42 -> div.c:42] 0 div [.] main
48.75% [div.c:42 -> div.c:44] 0 div [.] main
19.02% [random_r.c:357 -> random_r.c:360] 0 libc-2.23.so [.] __random_r
19.02% [random_r.c:357 -> random_r.c:373] 0 libc-2.23.so [.] __random_r
19.02% [random_r.c:357 -> random_r.c:376] 0 libc-2.23.so [.] __random_r
19.02% [random_r.c:357 -> random_r.c:380] 0 libc-2.23.so [.] __random_r
19.02% [random_r.c:357 -> random_r.c:392] 0 libc-2.23.so [.] __random_r
16.17% [random.c:288 -> random.c:291] 0 libc-2.23.so [.] __random
16.17% [random.c:288 -> random.c:291] 0 libc-2.23.so [.] __random
16.17% [random.c:288 -> random.c:295] 0 libc-2.23.so [.] __random
16.17% [random.c:288 -> random.c:297] 0 libc-2.23.so [.] __random
16.17% [random.c:291 -> random.c:291] 0 libc-2.23.so [.] __random
16.17% [random.c:293 -> random.c:293] 0 libc-2.23.so [.] __random
8.21% [div.c:22 -> div.c:22] 148 div [.] compute_flag
8.21% [div.c:22 -> div.c:25] 0 div [.] compute_flag
8.21% [div.c:27 -> div.c:28] 0 div [.] compute_flag
5.52% [rand.c:26 -> rand.c:27] 0 libc-2.23.so [.] rand
5.52% [rand.c:26 -> rand.c:28] 0 libc-2.23.so [.] rand
2.27% [rand@plt+0 -> rand@plt+0] 0 div [.] rand@plt
0.01% [entry_64.S:694 -> entry_64.S:694] 16 [vmlinux] [k] native_irq_return_iret
0.00% [fair.c:7676 -> fair.c:7665] 162 [vmlinux] [k] update_blocked_averages
"[Program Block Range]" indicates the range of program basic block
(start -> end). If we can find the source line it prints the source line
otherwise it prints the symbol+offset instead.
v4:
---
Use source lines or symbol+offset to indicate the basic block. It should
be easier to understand.
v3:
---
Cast 'struct hist_entry' to 'struct block_hist' in hist_entry__block_fprintf.
Use symbol_conf.report_block to check if executing hist_entry__block_fprintf.
v2:
---
Keep standard perf diff format and display the 'Baseline' and
'Shared Object'.
The output is sorted by "Baseline" and the basic blocks in the same
function are sorted by cycles diff.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1561713784-30533-7-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
The target is to compare the performance difference (cycles diff) for
the same basic blocks in different data files.
The same basic block means same function, same start address and same
end address. This patch finds the same basic blocks from different data
files and link them together and resort by the cycles diff.
v3:
---
The block stuffs are maintained by new structure 'block_hist',
so this patch is update accordingly.
v2:
---
Since now the basic block hists is changed to per symbol,
the patch only links the basic block hists for the same
symbol in different data files.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1561713784-30533-6-git-send-email-yao.jin@linux.intel.com
[ sym->name is an array, not a pointer, so no need to check it for NULL, fixes de build in some distros ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
The hist__account_cycles() can account cycles per basic block. The basic
block information is saved in cycles_hist structure.
This patch processes each symbol, get basic blocks from cycles_hist and
add the basic block entries to a new hists (in 'struct block_hist').
Using a hists is because we need to compare, sort and print the basic
blocks later.
v6:
---
Since 'ops' argument is removed from hists__add_entry_block,
update the code accordingly. No functional change.
v5:
---
Since now we still carry block_info in 'struct hist_entry'
we don't need to use our own new/free ops for hist entries.
And the block_info is released in hist_entry__delete.
v3:
---
1. In v2, we put block stuffs in 'struct hist_entry', but
it's not a good design. In v3, we create a new
'struct block_hist' and cast the 'struct hist_entry' to
'struct block_hist' in some places, which can avoid adding
new stuffs in 'struct hist_entry'.
2. abs() -> labs(), in block_cycles_diff_cmp().
v2:
---
v1 adds the basic block entries to per data-file hists
but v2 adds the basic block entries to per symbol hists.
That is to keep current perf-diff format. Will show the
result in next patches.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1561713784-30533-5-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
We will expand perf diff to support diff cycles of individual programs
blocks, so it requires all data files having branch stacks.
This patch checks HEADER_BRANCH_STACK in header, and only set the flag
has_br_stack when HEADER_BRANCH_STACK are set in all data files.
v2:
---
Move check_file_brstack() from __cmd_diff() to cmd_diff().
Because later patch will check flag 'has_br_stack' before
ui_init().
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1561713784-30533-4-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
The block_info contains the program basic block information, i.e,
contains the start address and the end address of this basic block and
how much cycles it takes.
We need to compare, sort and even print out the basic block by some
orders, i.e. sort by cycles.
For this purpose, we add block_info field to hist_entry. In order not to
impact current interface, we creates a new function
hists__add_entry_block.
v6:
---
Remove the 'ops' argument in hists__add_entry_block
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1561713784-30533-3-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
'perf diff' currently can only diff symbols(functions).
We should expand it to diff cycles of individual programs blocks as
reported by timed LBR. This would allow to identify changes in specific
code accurately.
We need a new structure to maintain the basic block information, such as,
symbol(function), start/end address of this block, cycles. This patch
creates this structure and with some ops.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1561713784-30533-2-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Fix objtool build, because it adds _ctype dependency via isspace call patch.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: André Goddard Rosa <andre.goddard@gmail.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 7bd330de43fd ("tools lib: Adopt skip_spaces() from the kernel sources")
Link: http://lkml.kernel.org/r/20190702121240.GB12694@krava
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
paranoid_exit needs to restore CR3 before GSBASE. Doing it in the opposite
order crashes if the exception came from a context with user GSBASE and
user CR3 -- RESTORE_CR3 cannot resture user CR3 if run with user GSBASE.
This results in infinitely recursing exceptions if user code does SYSENTER
with TF set if both FSGSBASE and PTI are enabled.
The old code worked if user code just set TF without SYSENTER because #DB
from user mode is special cased in idtentry and paranoid_exit doesn't run.
Fix it by cleaning up the spaghetti code. All that paranoid_exit needs to
do is to disable IRQs, handle IRQ tracing, then restore CR3, and restore
GSBASE. Simply do those actions in that order.
Fixes: 708078f65721 ("x86/entry/64: Handle FSGSBASE enabled paranoid entry/exit")
Reported-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ravi Shankar <ravi.v.shankar@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Link: https://lkml.kernel.org/r/59725ceb08977359489fbed979716949ad45f616.1562035429.git.luto@kernel.org
|
|
It's only used if !CONFIG_IA32_EMULATION, so disable it in normal
configs. This will save a few bytes of text and reduce confusion.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "BaeChang Seok" <chang.seok.bae@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "Bae, Chang Seok" <chang.seok.bae@intel.com>
Link: https://lkml.kernel.org/r/0f7dafa72fe7194689de5ee8cfe5d83509fabcf5.1562035429.git.luto@kernel.org
|
|
Make sure that both variants of the nasty TF-in-compat-syscall are
exercised regardless of what vendor's CPU is running the tests.
Also change the intentional signal after SYSCALL to use ud2, which
is a lot more comprehensible.
This crashes the kernel due to an FSGSBASE bug right now.
This test *also* detects a bug in KVM when run on an Intel host. KVM
people, feel free to use it to help debug. There's a bunch of code in this
test to warn instead of going into an infinite looping when the bug gets
triggered.
Reported-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "BaeChang Seok" <chang.seok.bae@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org
Cc: "Bae, Chang Seok" <chang.seok.bae@intel.com>
Link: https://lkml.kernel.org/r/5f5de10441ab2e3005538b4c33be9b1965d1bb63.1562035429.git.luto@kernel.org
|
|
Change pmu-events.c to not use local include statements. The code that
creates the include statements for pmu-events.c is in jevents.c.
pmu-events.c is a generated file, and for build systems that put
generated files in a separate directory, include statements with local
pathing cannot find non-generated files.
Signed-off-by: Luke Mujica <lukemujica@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Numfor Mbiziwo-Tiapo <nums@google.com>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lkml.kernel.org/n/tip-prgnwmaoo1pv9zz4vnv1bjaj@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
This patch add basic arch initialization and instruction associate
support for the csky CPU architecture.
E.g.:
$ perf annotate --stdio2
Samples: 161 of event 'cpu-clock:pppH', 4000 Hz, Event count (approx.):
40250000, [percent: local period]
test_4() /usr/lib/perf-test/callchain_test
Percent
Disassembly of section .text:
00008420 <test_4>:
test_4():
subi sp, sp, 4
st.w r8, (sp, 0x0)
mov r8, sp
subi sp, sp, 8
subi r3, r8, 4
movi r2, 0
st.w r2, (r3, 0x0)
↓ br 2e
100.00 14: subi r3, r8, 4
ld.w r2, (r3, 0x0)
subi r3, r8, 8
st.w r2, (r3, 0x0)
subi r3, r8, 4
ld.w r3, (r3, 0x0)
addi r2, r3, 1
subi r3, r8, 4
st.w r2, (r3, 0x0)
2e: subi r3, r8, 4
ld.w r2, (r3, 0x0)
lrw r3, 0x98967f // 8598 <main+0x28>
cmplt r3, r2
↑ bf 14
mov r0, r0
mov r0, r0
mov sp, r8
ld.w r8, (sp, 0x0)
addi sp, sp, 4
← rts
Signed-off-by: Mao Han <han_mao@c-sky.com>
Acked-by: Guo Ren <guoren@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-csky@vger.kernel.org
Link: http://lkml.kernel.org/r/d874d7782d9acdad5d98f2f5c4a6fb26fbe41c5d.1561531557.git.han_mao@c-sky.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Since Fixes: 8c5421c016a4 ("perf pmu: Display pmu name when printing
unmerged events in stat") using --no-merge adds the PMU name to the
evsel name.
This breaks the metric value lookup because the parser doesn't know
about this.
Remove the extra postfixes for the metric evaluation.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Agustin Vega-Frias <agustinv@codeaurora.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Fixes: 8c5421c016a4 ("perf pmu: Display pmu name when printing unmerged events in stat")
Link: http://lkml.kernel.org/r/20190624193711.35241-5-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
The metric group code tries to find a group it added earlier in the
evlist. Fix the lookup to handle groups with partially overlaps
correctly. When a sub string match fails and we reset the match, we have
to compare the first element again.
I also renamed the find_evsel function to find_evsel_group to make its
purpose clearer.
With the earlier changes this fixes:
Before:
% perf stat -M UPI,IPC sleep 1
...
1,032,922 uops_retired.retire_slots # 1.1 UPI
1,896,096 inst_retired.any
1,896,096 inst_retired.any
1,177,254 cpu_clk_unhalted.thread
After:
% perf stat -M UPI,IPC sleep 1
...
1,013,193 uops_retired.retire_slots # 1.1 UPI
932,033 inst_retired.any
932,033 inst_retired.any # 0.9 IPC
1,091,245 cpu_clk_unhalted.thread
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Fixes: b18f3e365019 ("perf stat: Support JSON metrics in perf stat")
Link: http://lkml.kernel.org/r/20190624193711.35241-4-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Event merging is mainly to collapse similar events in lots of different
duplicated PMUs.
It can break metric displaying. It's possible for two metrics to have
the same event, and when the two events happen in a row the second
wouldn't be displayed. This would also not show the second metric.
To avoid this don't merge events in the same PMU. This makes sense, if
we have multiple events in the same PMU there is likely some reason for
it (e.g. using multiple groups) and we better not merge them.
While in theory it would be possible to construct metrics that have
events with the same name in different PMU no current metrics have this
problem.
This is the fix for perf stat -M UPI,IPC (needs also another bug fix to
completely work)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Fixes: 430daf2dc7af ("perf stat: Collapse identically named events")
Link: http://lkml.kernel.org/r/20190624193711.35241-3-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
After setting up metric groups through the event parser, the metricgroup
code looks them up again in the event list.
Make sure we only look up events that haven't been used by some other
metric. The data structures currently cannot handle more than one metric
per event. This avoids problems with multiple events partially
overlapping.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Link: http://lkml.kernel.org/r/20190624193711.35241-2-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
This came from the kernel lib/argv_split.c, so move it to
tools/lib/argv_split.c, to get it closer to the kernel structure.
We need to audit the usage of argv_split() to figure out if it is really
necessary to do have one allocation per argv[] entry, looking at one of
its users I guess that is not the case and we probably are even leaking
those allocations by not using argv_free() judiciously, for later.
With this we further remove stuff from tools/perf/util/, reducing the
perf specific codebase and encouraging other tools/ code to use these
routines so as to keep the style and constructs used with the kernel.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-j479s1ive9h75w5lfg16jroz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
No change in behaviour intended, just reducing the codebase and using
something available in tools/lib/.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-oyi6zif3810nwi4uu85odnhv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
We'll use it to further reduce the size of tools/perf/util/string.c,
replacing the strxfrchar() equivalent function we have there.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-x3r61ikjrso1buygxwke8id3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Cleaning up a bit more tools/perf/util/ by using things we got from the
kernel and have in tools/lib/
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-7hluuoveryoicvkclshzjf1k@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Programming MTRR registers in multi-processor systems is a rather lengthy
process. Furthermore, all processors must program these registers in lock
step and with interrupts disabled; the process also involves flushing
caches and TLBs twice. As a result, the process may take a considerable
amount of time.
On some platforms, this can lead to a large skew of the refined-jiffies
clock source. Early when booting, if no other clock is available (e.g.,
booting with hpet=disabled), the refined-jiffies clock source is used to
monitor the TSC clock source. If the skew of refined-jiffies is too large,
Linux wrongly assumes that the TSC is unstable:
clocksource: timekeeping watchdog on CPU1: Marking clocksource
'tsc-early' as unstable because the skew is too large:
clocksource: 'refined-jiffies' wd_now: fffedc10 wd_last:
fffedb90 mask: ffffffff
clocksource: 'tsc-early' cs_now: 5eccfddebc cs_last: 5e7e3303d4
mask: ffffffffffffffff
tsc: Marking TSC unstable due to clocksource watchdog
As per measurements, around 98% of the time needed by the procedure to
program MTRRs in multi-processor systems is spent flushing caches with
wbinvd(). As per the Section 11.11.8 of the Intel 64 and IA 32
Architectures Software Developer's Manual, it is not necessary to flush
caches if the CPU supports cache self-snooping. Thus, skipping the cache
flushes can reduce by several tens of milliseconds the time needed to
complete the programming of the MTRR registers:
Platform Before After
104-core (208 Threads) Skylake 1437ms 28ms
2-core ( 4 Threads) Haswell 114ms 2ms
Reported-by: Mohammad Etemadi <mohammad.etemadi@intel.com>
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Alan Cox <alan.cox@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Andi Kleen <andi.kleen@intel.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jordan Borgner <mail@jordan-borgner.de>
Cc: "Ravi V. Shankar" <ravi.v.shankar@intel.com>
Cc: Ricardo Neri <ricardo.neri@intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Feiner <pfeiner@google.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Link: https://lkml.kernel.org/r/1561689337-19390-3-git-send-email-ricardo.neri-calderon@linux.intel.com
|
|
Processors which have self-snooping capability can handle conflicting
memory type across CPUs by snooping its own cache. However, there exists
CPU models in which having conflicting memory types still leads to
unpredictable behavior, machine check errors, or hangs.
Clear this feature on affected CPUs to prevent its use.
Suggested-by: Alan Cox <alan.cox@intel.com>
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Andi Kleen <andi.kleen@intel.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jordan Borgner <mail@jordan-borgner.de>
Cc: "Ravi V. Shankar" <ravi.v.shankar@intel.com>
Cc: Mohammad Etemadi <mohammad.etemadi@intel.com>
Cc: Ricardo Neri <ricardo.neri@intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Feiner <pfeiner@google.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Link: https://lkml.kernel.org/r/1561689337-19390-2-git-send-email-ricardo.neri-calderon@linux.intel.com
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Moving more stuff out of tools/perf/util/ and using the kernel idiom.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-wpj8rktj62yse5dq6ckny6de@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Since we're working on moving stuff out of tools/perf/util/ to
tools/lib/, take the opportunity to adopt routines from the kernel that
are equivalent, so that tools/ code look more like the kernel.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: André Goddard Rosa <andre.goddard@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-zqy1zdu2ok17qvi0ytk8z13c@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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No change in behaviour, just using the same kernel idiom for such
operation.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: André Goddard Rosa <andre.goddard@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-a85lkptkt0ru40irpga8yf54@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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No change in behaviour intended.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-lcywlfqbi37nhegmhl1ar6wg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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No change in behaviour intended, trivial optimization done by avoiding
looking for spaces in 'g' right after setting it to "No_group".
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-f2siadtp3hb5o0l1w7bvd8bk@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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No change in behaviour.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-p9rtamq7lvre9zhti70azfwe@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The skip_sep() routine has the same implementation as skip_spaces(),
recently adopted from the kernel, sources, switch to it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-0ix211a81z2016dl5nmtdci4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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No change in behaviour intended.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-cpugv7qd5vzhbtvnlydo90jv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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No change in behaviour.
Cc: Stephane Eranian <eranian@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-0dbfpi70aa66s6mtd8z6p391@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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No change in behaviour.
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-ncpvp4eelf8fqhuy29uv56z9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Same implementation, will be used to replace ad-hoc equivalent code in
tools/.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: André Goddard Rosa <andre.goddard@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-dig691cg9ripvoiprpidthw7@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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There were a few places where we still were using the libc version of
ctype.h, switch to the one in tools/lib/ctype.c that the rest of perf
uses.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-wa4nz4kt61eze88eprk20tfd@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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We got the sane_ctype.h headers from git and kept using it so far, but
since that code originally came from the kernel sources to the git
sources, perhaps its better to just use the one in the kernel, so that
we can leverage tools/perf/check_headers.sh to be notified when our copy
gets out of sync, i.e. when fixes or goodies are added to the code we've
copied.
This will help with things like tools/lib/string.c where we want to have
more things in common with the kernel, such as strim(), skip_spaces(),
etc so as to go on removing the things that we have in tools/perf/util/
and instead using the code in the kernel, indirectly and removing things
like EXPORT_SYMBOL(), etc, getting notified when fixes and improvements
are made to the original code.
Hopefully this also should help with reducing the difference of code
hosted in tools/ to the one in the kernel proper.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-7k9868l713wqtgo01xxygn12@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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