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[PATCH 3/8] perf test: Use a test program in perf record tests

Namhyung Kim posted 8 patches 3 years, 5 months ago
[PATCH 3/8] perf test: Use a test program in perf record tests
Posted by Namhyung Kim 3 years, 5 months ago 
If the system has cc it could build a test program with two threads
and then use it for more detailed testing.  Also it accepts an option
to run a thread forever to ensure multi-thread runs.

If cc is not found, it falls back to use the default value 'true'.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/tests/shell/record.sh | 64 ++++++++++++++++++++++++++++++--
 1 file changed, 60 insertions(+), 4 deletions(-)

diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
index 464071462809..952981481239 100755
--- a/tools/perf/tests/shell/record.sh
+++ b/tools/perf/tests/shell/record.sh
@@ -6,10 +6,17 @@ set -e
 
 err=0
 perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
+testprog=$(mktemp /tmp/__perf_test.prog.XXXXXX)
+testsym="test_loop"
 
 cleanup() {
   rm -f "${perfdata}"
   rm -f "${perfdata}".old
+
+  if [ "${testprog}" != "true" ]; then
+    rm -f "${testprog}"
+  fi
+
   trap - EXIT TERM INT
 }
 
@@ -19,9 +26,56 @@ trap_cleanup() {
 }
 trap trap_cleanup EXIT TERM INT
 
+build_test_program() {
+  if ! [ -x "$(command -v cc)" ]; then
+    # No CC found. Fall back to 'true'
+    testprog=true
+    testsym=true
+    return
+  fi
+
+  echo "Build a test program"
+  cat <<EOF | cc -o ${testprog} -xc - -pthread
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+void test_loop(void) {
+  volatile int count = 1000000;
+
+  while (count--)
+    continue;
+}
+
+void *thfunc(void *arg) {
+  int forever = *(int *)arg;
+
+  do {
+    test_loop();
+  } while (forever);
+
+  return NULL;
+}
+
+int main(int argc, char *argv[]) {
+  pthread_t th;
+  int forever = 0;
+
+  if (argc > 1)
+    forever = atoi(argv[1]);
+
+  pthread_create(&th, NULL, thfunc, &forever);
+  test_loop();
+  pthread_join(th, NULL);
+
+  return 0;
+}
+EOF
+}
+
 test_per_thread() {
   echo "Basic --per-thread mode test"
-  if ! perf record -o /dev/null --quiet true 2> /dev/null
+  if ! perf record -o /dev/null --quiet ${testprog} 2> /dev/null
   then
     echo "Per-thread record [Skipped event not supported]"
     if [ $err -ne 1 ]
@@ -30,13 +84,13 @@ test_per_thread() {
     fi
     return
   fi
-  if ! perf record --per-thread -o "${perfdata}" true 2> /dev/null
+  if ! perf record --per-thread -o "${perfdata}" ${testprog} 2> /dev/null
   then
     echo "Per-thread record [Failed record]"
     err=1
     return
   fi
-  if ! perf report -i "${perfdata}" -q | grep -q true
+  if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
   then
     echo "Per-thread record [Failed missing output]"
     err=1
@@ -62,7 +116,7 @@ test_register_capture() {
     return
   fi
   if ! perf record -o - --intr-regs=di,r8,dx,cx -e br_inst_retired.near_call:p \
-    -c 1000 --per-thread true 2> /dev/null \
+    -c 1000 --per-thread ${testprog} 2> /dev/null \
     | perf script -F ip,sym,iregs -i - 2> /dev/null \
     | grep -q "DI:"
   then
@@ -73,6 +127,8 @@ test_register_capture() {
   echo "Register capture test [Success]"
 }
 
+build_test_program
+
 test_per_thread
 test_register_capture
 
-- 
2.38.0.135.g90850a2211-goog
Re: [PATCH 3/8] perf test: Use a test program in perf record tests
Posted by Adrian Hunter 3 years, 5 months ago 
On 20/10/22 20:26, Namhyung Kim wrote:
> If the system has cc it could build a test program with two threads
> and then use it for more detailed testing.  Also it accepts an option
> to run a thread forever to ensure multi-thread runs.
> 
> If cc is not found, it falls back to use the default value 'true'.

Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>

> 
> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
> ---
>  tools/perf/tests/shell/record.sh | 64 ++++++++++++++++++++++++++++++--
>  1 file changed, 60 insertions(+), 4 deletions(-)
> 
> diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
> index 464071462809..952981481239 100755
> --- a/tools/perf/tests/shell/record.sh
> +++ b/tools/perf/tests/shell/record.sh
> @@ -6,10 +6,17 @@ set -e
>  
>  err=0
>  perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
> +testprog=$(mktemp /tmp/__perf_test.prog.XXXXXX)
> +testsym="test_loop"
>  
>  cleanup() {
>    rm -f "${perfdata}"
>    rm -f "${perfdata}".old
> +
> +  if [ "${testprog}" != "true" ]; then
> +    rm -f "${testprog}"
> +  fi
> +
>    trap - EXIT TERM INT
>  }
>  
> @@ -19,9 +26,56 @@ trap_cleanup() {
>  }
>  trap trap_cleanup EXIT TERM INT
>  
> +build_test_program() {
> +  if ! [ -x "$(command -v cc)" ]; then
> +    # No CC found. Fall back to 'true'
> +    testprog=true
> +    testsym=true
> +    return
> +  fi
> +
> +  echo "Build a test program"
> +  cat <<EOF | cc -o ${testprog} -xc - -pthread
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <pthread.h>
> +
> +void test_loop(void) {
> +  volatile int count = 1000000;
> +
> +  while (count--)
> +    continue;
> +}
> +
> +void *thfunc(void *arg) {
> +  int forever = *(int *)arg;
> +
> +  do {
> +    test_loop();
> +  } while (forever);
> +
> +  return NULL;
> +}
> +
> +int main(int argc, char *argv[]) {
> +  pthread_t th;
> +  int forever = 0;
> +
> +  if (argc > 1)
> +    forever = atoi(argv[1]);
> +
> +  pthread_create(&th, NULL, thfunc, &forever);
> +  test_loop();
> +  pthread_join(th, NULL);
> +
> +  return 0;
> +}
> +EOF
> +}
> +
>  test_per_thread() {
>    echo "Basic --per-thread mode test"
> -  if ! perf record -o /dev/null --quiet true 2> /dev/null
> +  if ! perf record -o /dev/null --quiet ${testprog} 2> /dev/null
>    then
>      echo "Per-thread record [Skipped event not supported]"
>      if [ $err -ne 1 ]
> @@ -30,13 +84,13 @@ test_per_thread() {
>      fi
>      return
>    fi
> -  if ! perf record --per-thread -o "${perfdata}" true 2> /dev/null
> +  if ! perf record --per-thread -o "${perfdata}" ${testprog} 2> /dev/null
>    then
>      echo "Per-thread record [Failed record]"
>      err=1
>      return
>    fi
> -  if ! perf report -i "${perfdata}" -q | grep -q true
> +  if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
>    then
>      echo "Per-thread record [Failed missing output]"
>      err=1
> @@ -62,7 +116,7 @@ test_register_capture() {
>      return
>    fi
>    if ! perf record -o - --intr-regs=di,r8,dx,cx -e br_inst_retired.near_call:p \
> -    -c 1000 --per-thread true 2> /dev/null \
> +    -c 1000 --per-thread ${testprog} 2> /dev/null \
>      | perf script -F ip,sym,iregs -i - 2> /dev/null \
>      | grep -q "DI:"
>    then
> @@ -73,6 +127,8 @@ test_register_capture() {
>    echo "Register capture test [Success]"
>  }
>  
> +build_test_program
> +
>  test_per_thread
>  test_register_capture
>
Re: [PATCH 3/8] perf test: Use a test program in perf record tests
Posted by Ian Rogers 3 years, 5 months ago 
On Thu, Oct 20, 2022 at 10:26 AM Namhyung Kim <namhyung@kernel.org> wrote:
>
> If the system has cc it could build a test program with two threads
> and then use it for more detailed testing.  Also it accepts an option
> to run a thread forever to ensure multi-thread runs.
>
> If cc is not found, it falls back to use the default value 'true'.
>
> Signed-off-by: Namhyung Kim <namhyung@kernel.org>

Acked-by: Ian Rogers <irogers@google.com>

I wonder if these utilities should just be built into perf to avoid
the cc dependency. Perhaps we can have a hidden option built into perf
test.

Thanks,
Ian

> ---
>  tools/perf/tests/shell/record.sh | 64 ++++++++++++++++++++++++++++++--
>  1 file changed, 60 insertions(+), 4 deletions(-)
>
> diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
> index 464071462809..952981481239 100755
> --- a/tools/perf/tests/shell/record.sh
> +++ b/tools/perf/tests/shell/record.sh
> @@ -6,10 +6,17 @@ set -e
>
>  err=0
>  perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
> +testprog=$(mktemp /tmp/__perf_test.prog.XXXXXX)
> +testsym="test_loop"
>
>  cleanup() {
>    rm -f "${perfdata}"
>    rm -f "${perfdata}".old
> +
> +  if [ "${testprog}" != "true" ]; then
> +    rm -f "${testprog}"
> +  fi
> +
>    trap - EXIT TERM INT
>  }
>
> @@ -19,9 +26,56 @@ trap_cleanup() {
>  }
>  trap trap_cleanup EXIT TERM INT
>
> +build_test_program() {
> +  if ! [ -x "$(command -v cc)" ]; then
> +    # No CC found. Fall back to 'true'
> +    testprog=true
> +    testsym=true
> +    return
> +  fi
> +
> +  echo "Build a test program"
> +  cat <<EOF | cc -o ${testprog} -xc - -pthread
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <pthread.h>
> +
> +void test_loop(void) {
> +  volatile int count = 1000000;
> +
> +  while (count--)
> +    continue;
> +}
> +
> +void *thfunc(void *arg) {
> +  int forever = *(int *)arg;
> +
> +  do {
> +    test_loop();
> +  } while (forever);
> +
> +  return NULL;
> +}
> +
> +int main(int argc, char *argv[]) {
> +  pthread_t th;
> +  int forever = 0;
> +
> +  if (argc > 1)
> +    forever = atoi(argv[1]);
> +
> +  pthread_create(&th, NULL, thfunc, &forever);
> +  test_loop();
> +  pthread_join(th, NULL);
> +
> +  return 0;
> +}
> +EOF
> +}
> +
>  test_per_thread() {
>    echo "Basic --per-thread mode test"
> -  if ! perf record -o /dev/null --quiet true 2> /dev/null
> +  if ! perf record -o /dev/null --quiet ${testprog} 2> /dev/null
>    then
>      echo "Per-thread record [Skipped event not supported]"
>      if [ $err -ne 1 ]
> @@ -30,13 +84,13 @@ test_per_thread() {
>      fi
>      return
>    fi
> -  if ! perf record --per-thread -o "${perfdata}" true 2> /dev/null
> +  if ! perf record --per-thread -o "${perfdata}" ${testprog} 2> /dev/null
>    then
>      echo "Per-thread record [Failed record]"
>      err=1
>      return
>    fi
> -  if ! perf report -i "${perfdata}" -q | grep -q true
> +  if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
>    then
>      echo "Per-thread record [Failed missing output]"
>      err=1
> @@ -62,7 +116,7 @@ test_register_capture() {
>      return
>    fi
>    if ! perf record -o - --intr-regs=di,r8,dx,cx -e br_inst_retired.near_call:p \
> -    -c 1000 --per-thread true 2> /dev/null \
> +    -c 1000 --per-thread ${testprog} 2> /dev/null \
>      | perf script -F ip,sym,iregs -i - 2> /dev/null \
>      | grep -q "DI:"
>    then
> @@ -73,6 +127,8 @@ test_register_capture() {
>    echo "Register capture test [Success]"
>  }
>
> +build_test_program
> +
>  test_per_thread
>  test_register_capture
>
> --
> 2.38.0.135.g90850a2211-goog
>
Re: [PATCH 3/8] perf test: Use a test program in perf record tests
Posted by Arnaldo Carvalho de Melo 3 years, 5 months ago 
Em Thu, Oct 20, 2022 at 04:52:14PM -0700, Ian Rogers escreveu:
> On Thu, Oct 20, 2022 at 10:26 AM Namhyung Kim <namhyung@kernel.org> wrote:

> > If the system has cc it could build a test program with two threads
> > and then use it for more detailed testing.  Also it accepts an option
> > to run a thread forever to ensure multi-thread runs.
> >
> > If cc is not found, it falls back to use the default value 'true'.
> >
> > Signed-off-by: Namhyung Kim <namhyung@kernel.org>
> 
> Acked-by: Ian Rogers <irogers@google.com>
> 
> I wonder if these utilities should just be built into perf to avoid
> the cc dependency. Perhaps we can have a hidden option built into perf
> test.

Agreed, not depending on a compiler makes 'perf test' usable in more
systems, particularly production ones where we may want to check if perf
is passing all tests applicable to that system.

- Arnaldo
 
> Thanks,
> Ian
> 
> > ---
> >  tools/perf/tests/shell/record.sh | 64 ++++++++++++++++++++++++++++++--
> >  1 file changed, 60 insertions(+), 4 deletions(-)
> >
> > diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
> > index 464071462809..952981481239 100755
> > --- a/tools/perf/tests/shell/record.sh
> > +++ b/tools/perf/tests/shell/record.sh
> > @@ -6,10 +6,17 @@ set -e
> >
> >  err=0
> >  perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
> > +testprog=$(mktemp /tmp/__perf_test.prog.XXXXXX)
> > +testsym="test_loop"
> >
> >  cleanup() {
> >    rm -f "${perfdata}"
> >    rm -f "${perfdata}".old
> > +
> > +  if [ "${testprog}" != "true" ]; then
> > +    rm -f "${testprog}"
> > +  fi
> > +
> >    trap - EXIT TERM INT
> >  }
> >
> > @@ -19,9 +26,56 @@ trap_cleanup() {
> >  }
> >  trap trap_cleanup EXIT TERM INT
> >
> > +build_test_program() {
> > +  if ! [ -x "$(command -v cc)" ]; then
> > +    # No CC found. Fall back to 'true'
> > +    testprog=true
> > +    testsym=true
> > +    return
> > +  fi
> > +
> > +  echo "Build a test program"
> > +  cat <<EOF | cc -o ${testprog} -xc - -pthread
> > +#include <stdio.h>
> > +#include <stdlib.h>
> > +#include <pthread.h>
> > +
> > +void test_loop(void) {
> > +  volatile int count = 1000000;
> > +
> > +  while (count--)
> > +    continue;
> > +}
> > +
> > +void *thfunc(void *arg) {
> > +  int forever = *(int *)arg;
> > +
> > +  do {
> > +    test_loop();
> > +  } while (forever);
> > +
> > +  return NULL;
> > +}
> > +
> > +int main(int argc, char *argv[]) {
> > +  pthread_t th;
> > +  int forever = 0;
> > +
> > +  if (argc > 1)
> > +    forever = atoi(argv[1]);
> > +
> > +  pthread_create(&th, NULL, thfunc, &forever);
> > +  test_loop();
> > +  pthread_join(th, NULL);
> > +
> > +  return 0;
> > +}
> > +EOF
> > +}
> > +
> >  test_per_thread() {
> >    echo "Basic --per-thread mode test"
> > -  if ! perf record -o /dev/null --quiet true 2> /dev/null
> > +  if ! perf record -o /dev/null --quiet ${testprog} 2> /dev/null
> >    then
> >      echo "Per-thread record [Skipped event not supported]"
> >      if [ $err -ne 1 ]
> > @@ -30,13 +84,13 @@ test_per_thread() {
> >      fi
> >      return
> >    fi
> > -  if ! perf record --per-thread -o "${perfdata}" true 2> /dev/null
> > +  if ! perf record --per-thread -o "${perfdata}" ${testprog} 2> /dev/null
> >    then
> >      echo "Per-thread record [Failed record]"
> >      err=1
> >      return
> >    fi
> > -  if ! perf report -i "${perfdata}" -q | grep -q true
> > +  if ! perf report -i "${perfdata}" -q | grep -q "${testsym}"
> >    then
> >      echo "Per-thread record [Failed missing output]"
> >      err=1
> > @@ -62,7 +116,7 @@ test_register_capture() {
> >      return
> >    fi
> >    if ! perf record -o - --intr-regs=di,r8,dx,cx -e br_inst_retired.near_call:p \
> > -    -c 1000 --per-thread true 2> /dev/null \
> > +    -c 1000 --per-thread ${testprog} 2> /dev/null \
> >      | perf script -F ip,sym,iregs -i - 2> /dev/null \
> >      | grep -q "DI:"
> >    then
> > @@ -73,6 +127,8 @@ test_register_capture() {
> >    echo "Register capture test [Success]"
> >  }
> >
> > +build_test_program
> > +
> >  test_per_thread
> >  test_register_capture
> >
> > --
> > 2.38.0.135.g90850a2211-goog
> >

-- 

- Arnaldo
Re: [PATCH 3/8] perf test: Use a test program in perf record tests
Posted by Namhyung Kim 3 years, 5 months ago 
On Mon, Oct 24, 2022 at 4:33 AM Arnaldo Carvalho de Melo
<acme@kernel.org> wrote:
>
> Em Thu, Oct 20, 2022 at 04:52:14PM -0700, Ian Rogers escreveu:
> > On Thu, Oct 20, 2022 at 10:26 AM Namhyung Kim <namhyung@kernel.org> wrote:
>
> > > If the system has cc it could build a test program with two threads
> > > and then use it for more detailed testing.  Also it accepts an option
> > > to run a thread forever to ensure multi-thread runs.
> > >
> > > If cc is not found, it falls back to use the default value 'true'.
> > >
> > > Signed-off-by: Namhyung Kim <namhyung@kernel.org>
> >
> > Acked-by: Ian Rogers <irogers@google.com>
> >
> > I wonder if these utilities should just be built into perf to avoid
> > the cc dependency. Perhaps we can have a hidden option built into perf
> > test.
>
> Agreed, not depending on a compiler makes 'perf test' usable in more
> systems, particularly production ones where we may want to check if perf
> is passing all tests applicable to that system.

Good idea.

I think we can add an option (like -w/--workload) to run the specified
workload rather than executing the tests.  Like below (assuming we
have a workload called 'noploop').  Thoughts?

  $ perf stat -- perf test -w noploop

Thanks,
Namhyung
Re: [PATCH 3/8] perf test: Use a test program in perf record tests
Posted by Adrian Hunter 3 years, 5 months ago 
On 24/10/22 14:33, Arnaldo Carvalho de Melo wrote:
> Em Thu, Oct 20, 2022 at 04:52:14PM -0700, Ian Rogers escreveu:
>> On Thu, Oct 20, 2022 at 10:26 AM Namhyung Kim <namhyung@kernel.org> wrote:
> 
>>> If the system has cc it could build a test program with two threads
>>> and then use it for more detailed testing.  Also it accepts an option
>>> to run a thread forever to ensure multi-thread runs.
>>>
>>> If cc is not found, it falls back to use the default value 'true'.
>>>
>>> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
>>
>> Acked-by: Ian Rogers <irogers@google.com>
>>
>> I wonder if these utilities should just be built into perf to avoid
>> the cc dependency. Perhaps we can have a hidden option built into perf
>> test.
> 
> Agreed, not depending on a compiler makes 'perf test' usable in more
> systems, particularly production ones where we may want to check if perf
> is passing all tests applicable to that system.

I haven't seen anyone package anything except the perf executable, so
I presume the only people running these tests install the source, and
so need a compiler anyway.
Re: [PATCH 3/8] perf test: Use a test program in perf record tests
Posted by Arnaldo Carvalho de Melo 3 years, 5 months ago 
Em Mon, Oct 24, 2022 at 05:00:14PM +0300, Adrian Hunter escreveu:
> On 24/10/22 14:33, Arnaldo Carvalho de Melo wrote:
> > Em Thu, Oct 20, 2022 at 04:52:14PM -0700, Ian Rogers escreveu:
> >> I wonder if these utilities should just be built into perf to avoid
> >> the cc dependency. Perhaps we can have a hidden option built into
> >> perf test.

> > Agreed, not depending on a compiler makes 'perf test' usable in more
> > systems, particularly production ones where we may want to check if perf
> > is passing all tests applicable to that system.
 
> I haven't seen anyone package anything except the perf executable, so
> I presume the only people running these tests install the source, and
> so need a compiler anyway.

Humm?

[root@quaco ~]# head -3 /etc/os-release
NAME="Fedora Linux"
VERSION="36 (Workstation Edition)"
ID=fedora
[root@quaco ~]#G

[root@quaco ~]# rpm -qi perf
Name        : perf
Version     : 5.19.4
Release     : 200.fc36
Architecture: x86_64
Install Date: Mon 24 Oct 2022 12:57:34 PM -03
Group       : Unspecified
Size        : 12663136
License     : GPLv2
Signature   : RSA/SHA256, Thu 25 Aug 2022 07:16:04 PM -03, Key ID 999f7cbf38ab71f4
Source RPM  : kernel-tools-5.19.4-200.fc36.src.rpm
Build Date  : Thu 25 Aug 2022 06:30:42 PM -03
Build Host  : bkernel02.iad2.fedoraproject.org
Packager    : Fedora Project
Vendor      : Fedora Project
URL         : http://www.kernel.org/
Bug URL     : https://bugz.fedoraproject.org/kernel-tools
Summary     : Performance monitoring for the Linux kernel
Description :
This package contains the perf tool, which enables performance monitoring
of the Linux kernel.
[root@quaco ~]#

[root@quaco ~]# rpm -ql perf
/etc/bash_completion.d/perf
/usr/bin/perf
/usr/lib/.build-id
/usr/lib/.build-id/0c
/usr/lib/.build-id/0c/54d587cab1b533b9ab777717ddd256ff84f241
/usr/lib/.build-id/15
/usr/lib/.build-id/15/6552556be0d4ca8cffb8e002d8a67add55aed5
/usr/lib/.build-id/15/c4dfaa3861f530ef60def5506385d4b0b8924f
/usr/lib/.build-id/1f
/usr/lib/.build-id/1f/799c084e326516a24a647cfd5f484cd054e0a2
/usr/lib/.build-id/23
/usr/lib/.build-id/23/311fe148dd3f3d487ca5ace54ff2faa72ea8da
/usr/lib/.build-id/37
/usr/lib/.build-id/37/c9ee70f321fae7fc1fc00fca91514c63f9f052
/usr/lib/.build-id/54
/usr/lib/.build-id/54/43b6bc332ad188b907fdde69ac02c9a69d158f
/usr/lib/.build-id/7e
/usr/lib/.build-id/7e/55e7a8e4df03137ec23b4135e205bc8eb77e05
/usr/lib/.build-id/84
/usr/lib/.build-id/84/3c3863a123d129c98fa7cb99a58d620c9e5edc
/usr/lib/.build-id/86
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/usr/libexec/perf-core/scripts/perl/Perf-Trace-Util/lib/Perf/Trace
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/usr/libexec/perf-core/scripts/python/Perf-Trace-Util/lib/Perf/Trace
/usr/libexec/perf-core/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Core.py
/usr/libexec/perf-core/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py
/usr/libexec/perf-core/scripts/python/Perf-Trace-Util/lib/Perf/Trace/SchedGui.py
/usr/libexec/perf-core/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py
/usr/libexec/perf-core/scripts/python/arm-cs-trace-disasm.py
/usr/libexec/perf-core/scripts/python/bin
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/usr/libexec/perf-core/scripts/python/bin/event_analyzing_sample-report
/usr/libexec/perf-core/scripts/python/bin/export-to-postgresql-record
/usr/libexec/perf-core/scripts/python/bin/export-to-postgresql-report
/usr/libexec/perf-core/scripts/python/bin/export-to-sqlite-record
/usr/libexec/perf-core/scripts/python/bin/export-to-sqlite-report
/usr/libexec/perf-core/scripts/python/bin/failed-syscalls-by-pid-record
/usr/libexec/perf-core/scripts/python/bin/failed-syscalls-by-pid-report
/usr/libexec/perf-core/scripts/python/bin/flamegraph-record
/usr/libexec/perf-core/scripts/python/bin/flamegraph-report
/usr/libexec/perf-core/scripts/python/bin/futex-contention-record
/usr/libexec/perf-core/scripts/python/bin/futex-contention-report
/usr/libexec/perf-core/scripts/python/bin/intel-pt-events-record
/usr/libexec/perf-core/scripts/python/bin/intel-pt-events-report
/usr/libexec/perf-core/scripts/python/bin/mem-phys-addr-record
/usr/libexec/perf-core/scripts/python/bin/mem-phys-addr-report
/usr/libexec/perf-core/scripts/python/bin/net_dropmonitor-record
/usr/libexec/perf-core/scripts/python/bin/net_dropmonitor-report
/usr/libexec/perf-core/scripts/python/bin/netdev-times-record
/usr/libexec/perf-core/scripts/python/bin/netdev-times-report
/usr/libexec/perf-core/scripts/python/bin/powerpc-hcalls-record
/usr/libexec/perf-core/scripts/python/bin/powerpc-hcalls-report
/usr/libexec/perf-core/scripts/python/bin/sched-migration-record
/usr/libexec/perf-core/scripts/python/bin/sched-migration-report
/usr/libexec/perf-core/scripts/python/bin/sctop-record
/usr/libexec/perf-core/scripts/python/bin/sctop-report
/usr/libexec/perf-core/scripts/python/bin/stackcollapse-record
/usr/libexec/perf-core/scripts/python/bin/stackcollapse-report
/usr/libexec/perf-core/scripts/python/bin/syscall-counts-by-pid-record
/usr/libexec/perf-core/scripts/python/bin/syscall-counts-by-pid-report
/usr/libexec/perf-core/scripts/python/bin/syscall-counts-record
/usr/libexec/perf-core/scripts/python/bin/syscall-counts-report
/usr/libexec/perf-core/scripts/python/check-perf-trace.py
/usr/libexec/perf-core/scripts/python/compaction-times.py
/usr/libexec/perf-core/scripts/python/event_analyzing_sample.py
/usr/libexec/perf-core/scripts/python/export-to-postgresql.py
/usr/libexec/perf-core/scripts/python/export-to-sqlite.py
/usr/libexec/perf-core/scripts/python/exported-sql-viewer.py
/usr/libexec/perf-core/scripts/python/failed-syscalls-by-pid.py
/usr/libexec/perf-core/scripts/python/flamegraph.py
/usr/libexec/perf-core/scripts/python/futex-contention.py
/usr/libexec/perf-core/scripts/python/intel-pt-events.py
/usr/libexec/perf-core/scripts/python/libxed.py
/usr/libexec/perf-core/scripts/python/mem-phys-addr.py
/usr/libexec/perf-core/scripts/python/net_dropmonitor.py
/usr/libexec/perf-core/scripts/python/netdev-times.py
/usr/libexec/perf-core/scripts/python/powerpc-hcalls.py
/usr/libexec/perf-core/scripts/python/sched-migration.py
/usr/libexec/perf-core/scripts/python/sctop.py
/usr/libexec/perf-core/scripts/python/stackcollapse.py
/usr/libexec/perf-core/scripts/python/stat-cpi.py
/usr/libexec/perf-core/scripts/python/syscall-counts-by-pid.py
/usr/libexec/perf-core/scripts/python/syscall-counts.py
/usr/libexec/perf-core/tests
/usr/libexec/perf-core/tests/attr
/usr/libexec/perf-core/tests/attr.py
/usr/libexec/perf-core/tests/attr/README
/usr/libexec/perf-core/tests/attr/base-record
/usr/libexec/perf-core/tests/attr/base-record-spe
/usr/libexec/perf-core/tests/attr/base-stat
/usr/libexec/perf-core/tests/attr/system-wide-dummy
/usr/libexec/perf-core/tests/attr/test-record-C0
/usr/libexec/perf-core/tests/attr/test-record-basic
/usr/libexec/perf-core/tests/attr/test-record-branch-any
/usr/libexec/perf-core/tests/attr/test-record-branch-filter-any
/usr/libexec/perf-core/tests/attr/test-record-branch-filter-any_call
/usr/libexec/perf-core/tests/attr/test-record-branch-filter-any_ret
/usr/libexec/perf-core/tests/attr/test-record-branch-filter-hv
/usr/libexec/perf-core/tests/attr/test-record-branch-filter-ind_call
/usr/libexec/perf-core/tests/attr/test-record-branch-filter-k
/usr/libexec/perf-core/tests/attr/test-record-branch-filter-u
/usr/libexec/perf-core/tests/attr/test-record-count
/usr/libexec/perf-core/tests/attr/test-record-data
/usr/libexec/perf-core/tests/attr/test-record-freq
/usr/libexec/perf-core/tests/attr/test-record-graph-default
/usr/libexec/perf-core/tests/attr/test-record-graph-default-aarch64
/usr/libexec/perf-core/tests/attr/test-record-graph-dwarf
/usr/libexec/perf-core/tests/attr/test-record-graph-fp
/usr/libexec/perf-core/tests/attr/test-record-graph-fp-aarch64
/usr/libexec/perf-core/tests/attr/test-record-group
/usr/libexec/perf-core/tests/attr/test-record-group-sampling
/usr/libexec/perf-core/tests/attr/test-record-group1
/usr/libexec/perf-core/tests/attr/test-record-group2
/usr/libexec/perf-core/tests/attr/test-record-no-buffering
/usr/libexec/perf-core/tests/attr/test-record-no-inherit
/usr/libexec/perf-core/tests/attr/test-record-no-samples
/usr/libexec/perf-core/tests/attr/test-record-period
/usr/libexec/perf-core/tests/attr/test-record-pfm-period
/usr/libexec/perf-core/tests/attr/test-record-raw
/usr/libexec/perf-core/tests/attr/test-record-spe-period
/usr/libexec/perf-core/tests/attr/test-record-spe-period-term
/usr/libexec/perf-core/tests/attr/test-record-spe-physical-address
/usr/libexec/perf-core/tests/attr/test-stat-C0
/usr/libexec/perf-core/tests/attr/test-stat-basic
/usr/libexec/perf-core/tests/attr/test-stat-default
/usr/libexec/perf-core/tests/attr/test-stat-detailed-1
/usr/libexec/perf-core/tests/attr/test-stat-detailed-2
/usr/libexec/perf-core/tests/attr/test-stat-detailed-3
/usr/libexec/perf-core/tests/attr/test-stat-group
/usr/libexec/perf-core/tests/attr/test-stat-group1
/usr/libexec/perf-core/tests/attr/test-stat-no-inherit
/usr/libexec/perf-core/tests/pe-file.exe
/usr/libexec/perf-core/tests/pe-file.exe.debug
/usr/libexec/perf-core/tests/shell
/usr/libexec/perf-core/tests/shell/buildid.sh
/usr/libexec/perf-core/tests/shell/daemon.sh
/usr/libexec/perf-core/tests/shell/lib
/usr/libexec/perf-core/tests/shell/lib/probe.sh
/usr/libexec/perf-core/tests/shell/lib/probe_vfs_getname.sh
/usr/libexec/perf-core/tests/shell/pipe_test.sh
/usr/libexec/perf-core/tests/shell/probe_vfs_getname.sh
/usr/libexec/perf-core/tests/shell/record+probe_libc_inet_pton.sh
/usr/libexec/perf-core/tests/shell/record+script_probe_vfs_getname.sh
/usr/libexec/perf-core/tests/shell/record+zstd_comp_decomp.sh
/usr/libexec/perf-core/tests/shell/record.sh
/usr/libexec/perf-core/tests/shell/record_offcpu.sh
/usr/libexec/perf-core/tests/shell/stat+csv_output.sh
/usr/libexec/perf-core/tests/shell/stat+csv_summary.sh
/usr/libexec/perf-core/tests/shell/stat+shadow_stat.sh
/usr/libexec/perf-core/tests/shell/stat.sh
/usr/libexec/perf-core/tests/shell/stat_all_metricgroups.sh
/usr/libexec/perf-core/tests/shell/stat_all_metrics.sh
/usr/libexec/perf-core/tests/shell/stat_all_pmu.sh
/usr/libexec/perf-core/tests/shell/stat_bpf_counters.sh
/usr/libexec/perf-core/tests/shell/test_arm_callgraph_fp.sh
/usr/libexec/perf-core/tests/shell/test_arm_coresight.sh
/usr/libexec/perf-core/tests/shell/test_arm_spe.sh
/usr/libexec/perf-core/tests/shell/test_arm_spe_fork.sh
/usr/libexec/perf-core/tests/shell/test_intel_pt.sh
/usr/libexec/perf-core/tests/shell/trace+probe_vfs_getname.sh
/usr/share/doc/perf
/usr/share/doc/perf-tip/tips.txt
/usr/share/doc/perf/examples.txt
/usr/share/licenses/perf
/usr/share/licenses/perf/COPYING
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Re: [PATCH 3/8] perf test: Use a test program in perf record tests
Posted by Adrian Hunter 3 years, 5 months ago 
On 24/10/22 19:00, Arnaldo Carvalho de Melo wrote:
> Em Mon, Oct 24, 2022 at 05:00:14PM +0300, Adrian Hunter escreveu:
>> On 24/10/22 14:33, Arnaldo Carvalho de Melo wrote:
>>> Em Thu, Oct 20, 2022 at 04:52:14PM -0700, Ian Rogers escreveu:
>>>> I wonder if these utilities should just be built into perf to avoid
>>>> the cc dependency. Perhaps we can have a hidden option built into
>>>> perf test.
> 
>>> Agreed, not depending on a compiler makes 'perf test' usable in more
>>> systems, particularly production ones where we may want to check if perf
>>> is passing all tests applicable to that system.
>  
>> I haven't seen anyone package anything except the perf executable, so
>> I presume the only people running these tests install the source, and
>> so need a compiler anyway.
> 
> Humm?
> 
> [root@quaco ~]# head -3 /etc/os-release
> NAME="Fedora Linux"
> VERSION="36 (Workstation Edition)"
> ID=fedora
> [root@quaco ~]#G

I guess I got confused - it seems it is only Ubuntu that does that.
Re: [PATCH 3/8] perf test: Use a test program in perf record tests
Posted by Namhyung Kim 3 years, 5 months ago 
On Mon, Oct 24, 2022 at 9:00 AM Arnaldo Carvalho de Melo
<acme@kernel.org> wrote:
>
> Em Mon, Oct 24, 2022 at 05:00:14PM +0300, Adrian Hunter escreveu:
> > On 24/10/22 14:33, Arnaldo Carvalho de Melo wrote:
> > > Em Thu, Oct 20, 2022 at 04:52:14PM -0700, Ian Rogers escreveu:
> > >> I wonder if these utilities should just be built into perf to avoid
> > >> the cc dependency. Perhaps we can have a hidden option built into
> > >> perf test.
>
> > > Agreed, not depending on a compiler makes 'perf test' usable in more
> > > systems, particularly production ones where we may want to check if perf
> > > is passing all tests applicable to that system.
>
> > I haven't seen anyone package anything except the perf executable, so
> > I presume the only people running these tests install the source, and
> > so need a compiler anyway.
>
> Humm?
>
> [root@quaco ~]# head -3 /etc/os-release
> NAME="Fedora Linux"
> VERSION="36 (Workstation Edition)"
> ID=fedora
> [root@quaco ~]#G
>
> [root@quaco ~]# rpm -qi perf
> Name        : perf
> Version     : 5.19.4
> Release     : 200.fc36
> Architecture: x86_64
> Install Date: Mon 24 Oct 2022 12:57:34 PM -03
> Group       : Unspecified
> Size        : 12663136
> License     : GPLv2
> Signature   : RSA/SHA256, Thu 25 Aug 2022 07:16:04 PM -03, Key ID 999f7cbf38ab71f4
> Source RPM  : kernel-tools-5.19.4-200.fc36.src.rpm
> Build Date  : Thu 25 Aug 2022 06:30:42 PM -03
> Build Host  : bkernel02.iad2.fedoraproject.org
> Packager    : Fedora Project
> Vendor      : Fedora Project
> URL         : http://www.kernel.org/
> Bug URL     : https://bugz.fedoraproject.org/kernel-tools
> Summary     : Performance monitoring for the Linux kernel
> Description :
> This package contains the perf tool, which enables performance monitoring
> of the Linux kernel.
> [root@quaco ~]#
>
> [root@quaco ~]# rpm -ql perf
> /etc/bash_completion.d/perf
> /usr/bin/perf
> /usr/lib/.build-id
> /usr/lib/.build-id/0c
> /usr/lib/.build-id/0c/54d587cab1b533b9ab777717ddd256ff84f241
> /usr/lib/.build-id/15
> /usr/lib/.build-id/15/6552556be0d4ca8cffb8e002d8a67add55aed5
> /usr/lib/.build-id/15/c4dfaa3861f530ef60def5506385d4b0b8924f
> /usr/lib/.build-id/1f
> /usr/lib/.build-id/1f/799c084e326516a24a647cfd5f484cd054e0a2
> /usr/lib/.build-id/23
> /usr/lib/.build-id/23/311fe148dd3f3d487ca5ace54ff2faa72ea8da
> /usr/lib/.build-id/37
> /usr/lib/.build-id/37/c9ee70f321fae7fc1fc00fca91514c63f9f052
> /usr/lib/.build-id/54
> /usr/lib/.build-id/54/43b6bc332ad188b907fdde69ac02c9a69d158f
> /usr/lib/.build-id/7e
> /usr/lib/.build-id/7e/55e7a8e4df03137ec23b4135e205bc8eb77e05
> /usr/lib/.build-id/84
> /usr/lib/.build-id/84/3c3863a123d129c98fa7cb99a58d620c9e5edc
> /usr/lib/.build-id/86
> /usr/lib/.build-id/86/d063d2f9833a447d96504e5f9e472048d12c49
> /usr/lib/.build-id/98
> /usr/lib/.build-id/98/a28589fde6ce95d9f3d305f7c9853333a9415b
> /usr/lib/.build-id/9e
> /usr/lib/.build-id/9e/567f55ca9c2b4867eb95d4182da07d4843976d
> /usr/lib/.build-id/b6
> /usr/lib/.build-id/b6/f8c9a6d6e1990f8577a9fbac875f812a316a20
> /usr/lib/.build-id/c0
> /usr/lib/.build-id/c0/8b255f02ce8f3e90df2b6156d2d38b1221995d
> /usr/lib/.build-id/d5/e964c3413f52492e6355852d25b2ab23b03e38
> /usr/lib/.build-id/e8
> /usr/lib/.build-id/e8/2de614bf77f501a4511cb70151b98392669c77

Interesting, it contains some build-ids for system libraries?

Thanks,
Namhyung
Re: [PATCH 3/8] perf test: Use a test program in perf record tests
Posted by Arnaldo Carvalho de Melo 3 years, 5 months ago 
Em Mon, Oct 24, 2022 at 09:12:21PM -0700, Namhyung Kim escreveu:
> On Mon, Oct 24, 2022 at 9:00 AM Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

> > Em Mon, Oct 24, 2022 at 05:00:14PM +0300, Adrian Hunter escreveu:
> > > On 24/10/22 14:33, Arnaldo Carvalho de Melo wrote:
> > > > Em Thu, Oct 20, 2022 at 04:52:14PM -0700, Ian Rogers escreveu:
> > > >> I wonder if these utilities should just be built into perf to avoid
> > > >> the cc dependency. Perhaps we can have a hidden option built into
> > > >> perf test.

> > > > Agreed, not depending on a compiler makes 'perf test' usable in more
> > > > systems, particularly production ones where we may want to check if perf
> > > > is passing all tests applicable to that system.

> > > I haven't seen anyone package anything except the perf executable, so
> > > I presume the only people running these tests install the source, and
> > > so need a compiler anyway.

> > Humm?

> > [root@quaco ~]# head -3 /etc/os-release
> > NAME="Fedora Linux"
> > VERSION="36 (Workstation Edition)"
> > ID=fedora
> > [root@quaco ~]#G

> > [root@quaco ~]# rpm -qi perf
> > Name        : perf
> > Version     : 5.19.4
> > Release     : 200.fc36
> > Architecture: x86_64
> > Install Date: Mon 24 Oct 2022 12:57:34 PM -03
> > Group       : Unspecified
> > Size        : 12663136
> > License     : GPLv2
> > Signature   : RSA/SHA256, Thu 25 Aug 2022 07:16:04 PM -03, Key ID 999f7cbf38ab71f4
> > Source RPM  : kernel-tools-5.19.4-200.fc36.src.rpm
> > Build Date  : Thu 25 Aug 2022 06:30:42 PM -03
> > Build Host  : bkernel02.iad2.fedoraproject.org
> > Packager    : Fedora Project
> > Vendor      : Fedora Project
> > URL         : http://www.kernel.org/
> > Bug URL     : https://bugz.fedoraproject.org/kernel-tools
> > Summary     : Performance monitoring for the Linux kernel
> > Description :
> > This package contains the perf tool, which enables performance monitoring
> > of the Linux kernel.
> > [root@quaco ~]#
> >
> > [root@quaco ~]# rpm -ql perf
> > /etc/bash_completion.d/perf
> > /usr/bin/perf
> > /usr/lib/.build-id
> > /usr/lib/.build-id/0c
> > /usr/lib/.build-id/0c/54d587cab1b533b9ab777717ddd256ff84f241
> > /usr/lib/.build-id/15
> > /usr/lib/.build-id/15/6552556be0d4ca8cffb8e002d8a67add55aed5
> > /usr/lib/.build-id/15/c4dfaa3861f530ef60def5506385d4b0b8924f
> > /usr/lib/.build-id/1f
> > /usr/lib/.build-id/1f/799c084e326516a24a647cfd5f484cd054e0a2
> > /usr/lib/.build-id/23
> > /usr/lib/.build-id/23/311fe148dd3f3d487ca5ace54ff2faa72ea8da
> > /usr/lib/.build-id/37
> > /usr/lib/.build-id/37/c9ee70f321fae7fc1fc00fca91514c63f9f052
> > /usr/lib/.build-id/54
> > /usr/lib/.build-id/54/43b6bc332ad188b907fdde69ac02c9a69d158f
> > /usr/lib/.build-id/7e
> > /usr/lib/.build-id/7e/55e7a8e4df03137ec23b4135e205bc8eb77e05
> > /usr/lib/.build-id/84
> > /usr/lib/.build-id/84/3c3863a123d129c98fa7cb99a58d620c9e5edc
> > /usr/lib/.build-id/86
> > /usr/lib/.build-id/86/d063d2f9833a447d96504e5f9e472048d12c49
> > /usr/lib/.build-id/98
> > /usr/lib/.build-id/98/a28589fde6ce95d9f3d305f7c9853333a9415b
> > /usr/lib/.build-id/9e
> > /usr/lib/.build-id/9e/567f55ca9c2b4867eb95d4182da07d4843976d
> > /usr/lib/.build-id/b6
> > /usr/lib/.build-id/b6/f8c9a6d6e1990f8577a9fbac875f812a316a20
> > /usr/lib/.build-id/c0
> > /usr/lib/.build-id/c0/8b255f02ce8f3e90df2b6156d2d38b1221995d
> > /usr/lib/.build-id/d5/e964c3413f52492e6355852d25b2ab23b03e38
> > /usr/lib/.build-id/e8
> > /usr/lib/.build-id/e8/2de614bf77f501a4511cb70151b98392669c77
> 
> Interesting, it contains some build-ids for system libraries?

[acme@quaco ~]$ ls -la /usr/lib/.build-id/e8/2de614bf77f501a4511cb70151b98392669c77
lrwxrwxrwx. 1 root root 67 Aug 25 18:33 /usr/lib/.build-id/e8/2de614bf77f501a4511cb70151b98392669c77 -> ../../../../usr/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so
[acme@quaco ~]$

Yeah, strange:

[acme@quaco ~]$ rpm -ql perf | grep build-id/../
/usr/lib/.build-id/0c/54d587cab1b533b9ab777717ddd256ff84f241
/usr/lib/.build-id/15/6552556be0d4ca8cffb8e002d8a67add55aed5
/usr/lib/.build-id/15/c4dfaa3861f530ef60def5506385d4b0b8924f
/usr/lib/.build-id/1f/799c084e326516a24a647cfd5f484cd054e0a2
/usr/lib/.build-id/23/311fe148dd3f3d487ca5ace54ff2faa72ea8da
/usr/lib/.build-id/37/c9ee70f321fae7fc1fc00fca91514c63f9f052
/usr/lib/.build-id/54/43b6bc332ad188b907fdde69ac02c9a69d158f
/usr/lib/.build-id/7e/55e7a8e4df03137ec23b4135e205bc8eb77e05
/usr/lib/.build-id/84/3c3863a123d129c98fa7cb99a58d620c9e5edc
/usr/lib/.build-id/86/d063d2f9833a447d96504e5f9e472048d12c49
/usr/lib/.build-id/98/a28589fde6ce95d9f3d305f7c9853333a9415b
/usr/lib/.build-id/9e/567f55ca9c2b4867eb95d4182da07d4843976d
/usr/lib/.build-id/b6/f8c9a6d6e1990f8577a9fbac875f812a316a20
/usr/lib/.build-id/c0/8b255f02ce8f3e90df2b6156d2d38b1221995d
/usr/lib/.build-id/d5/e964c3413f52492e6355852d25b2ab23b03e38
/usr/lib/.build-id/e8/2de614bf77f501a4511cb70151b98392669c77
[acme@quaco ~]$
[acme@quaco ~]$ rpm -ql perf | grep build-id/../ | xargs realpath
/usr/lib64/traceevent/plugins/plugin_sched_switch.so
/usr/lib64/traceevent/plugins/plugin_kmem.so
/usr/lib64/traceevent/plugins/plugin_tlb.so
/usr/lib64/traceevent/plugins/plugin_jbd2.so
/usr/lib64/traceevent/plugins/plugin_hrtimer.so
/usr/lib64/traceevent/plugins/plugin_mac80211.so
/usr/lib64/libperf-jvmti.so
/usr/lib64/traceevent/plugins/plugin_cfg80211.so
/usr/lib64/traceevent/plugins/plugin_xen.so
/usr/lib64/traceevent/plugins/plugin_kvm.so
/usr/libexec/perf-core/dlfilters/dlfilter-show-cycles.so
/usr/lib64/traceevent/plugins/plugin_scsi.so
/usr/lib64/traceevent/plugins/plugin_futex.so
/usr/bin/perf
/usr/lib64/traceevent/plugins/plugin_function.so
/usr/libexec/perf-core/dlfilters/dlfilter-test-api-v0.so
[acme@quaco ~]$ rpm -ql perf | grep build-id/../ | xargs realpath | xargs rpm -qf
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
perf-5.19.4-200.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
perf-5.19.4-200.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
perf-5.19.4-200.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
perf-5.19.4-200.fc36.x86_64
[acme@quaco ~]$

Humm, but then the build-ids are different...

[acme@quaco ~]$ rpm -ql libtraceevent | grep build-id/../
/usr/lib/.build-id/00/59bd37dc1c345eb2f98cf2bc1163bc1fd4b63e
/usr/lib/.build-id/00/b22aa8cc2b81e4cb383d8b4dc14cbeb958fda6
/usr/lib/.build-id/11/6a8d17c89795d2269d3d65906ea7c7c5bcb856
/usr/lib/.build-id/24/8bfb4534954eb71ab3e5f7887507cb8981f921
/usr/lib/.build-id/57/0768e8ea5155cf2759c4f5dca3736a73c3dfad
/usr/lib/.build-id/61/2744cd9cb2d1b0c569b0c86578d11be7227f27
/usr/lib/.build-id/9d/630834441f4e382ddcecef810b100737bb56e4
/usr/lib/.build-id/b0/57189b558351ace427ae0a650c248deca4badd
/usr/lib/.build-id/b1/a0003b83e307cf61d7c8a2751e5c78e6ccfc87
/usr/lib/.build-id/b4/b8a30ebf86cb849bcb0cabc4d452c1a44487cc
/usr/lib/.build-id/ce/5e0647f756ec2c30b2e6df9a5a98e552871cb6
/usr/lib/.build-id/e0/a6a6207f56674ffacd7b063fd2acd4cec3f661
/usr/lib/.build-id/f4/86fb5b3072945405d0590045715d18adc7aa18
[acme@quaco ~]$
[acme@quaco ~]$ rpm -ql libtraceevent | grep build-id/../ | xargs realpath
/usr/lib64/traceevent/plugins/plugin_function.so
/usr/lib64/traceevent/plugins/plugin_scsi.so
/usr/lib64/traceevent/plugins/plugin_futex.so
/usr/lib64/traceevent/plugins/plugin_cfg80211.so
/usr/lib64/traceevent/plugins/plugin_hrtimer.so
/usr/lib64/traceevent/plugins/plugin_mac80211.so
/usr/lib64/traceevent/plugins/plugin_sched_switch.so
/usr/lib64/traceevent/plugins/plugin_jbd2.so
/usr/lib64/traceevent/plugins/plugin_tlb.so
/usr/lib64/traceevent/plugins/plugin_xen.so
/usr/lib64/traceevent/plugins/plugin_kvm.so
/usr/lib64/traceevent/plugins/plugin_kmem.so
/usr/lib64/libtraceevent.so.1.5.3
[acme@quaco ~]$ rpm -ql libtraceevent | grep build-id/../ | xargs realpath  | xargs rpm -qf
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
libtraceevent-1.5.3-2.fc36.x86_64
[acme@quaco ~]$

I.e. libtraceevent has the plugins and the build-id symlinks, perf has
just the symlinks:

[acme@quaco ~]$ rpm -ql libtraceevent | grep plugin_.*so
/usr/lib64/traceevent/plugins/plugin_cfg80211.so
/usr/lib64/traceevent/plugins/plugin_function.so
/usr/lib64/traceevent/plugins/plugin_futex.so
/usr/lib64/traceevent/plugins/plugin_hrtimer.so
/usr/lib64/traceevent/plugins/plugin_jbd2.so
/usr/lib64/traceevent/plugins/plugin_kmem.so
/usr/lib64/traceevent/plugins/plugin_kvm.so
/usr/lib64/traceevent/plugins/plugin_mac80211.so
/usr/lib64/traceevent/plugins/plugin_sched_switch.so
/usr/lib64/traceevent/plugins/plugin_scsi.so
/usr/lib64/traceevent/plugins/plugin_tlb.so
/usr/lib64/traceevent/plugins/plugin_xen.so
[acme@quaco ~]$ rpm -ql perf | grep plugin_.*so
[acme@quaco ~]$ 

And perf is being built with the libtraceevent that is in fedora:

[acme@quaco ~]$ ldd `which perf` | grep traceevent
	libtraceevent.so.1 => /lib64/libtraceevent.so.1 (0x00007f43496dc000)
[acme@quaco ~]$ rpm -qf /lib64/libtraceevent.so.1
libtraceevent-1.5.3-2.fc36.x86_64
[acme@quaco ~]$ rpm -qf /usr/bin/perf
perf-5.19.4-200.fc36.x86_64
[acme@quaco ~]$
[acme@quaco ~]$ file /usr/bin/perf
/usr/bin/perf: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=c08b255f02ce8f3e90df2b6156d2d38b1221995d, for GNU/Linux 3.2.0, stripped
[acme@quaco ~]$

So it seems its just a matter of removing those /usr/lib/.build-id/
symlinks to the libtraceevent plugins from the fedora perf rpm.

Justin?

- Arnaldo

Patchew 2.1-devel-ea86937

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