* [PATCH] libperf: Fix perf_cpu_map__for_each_cpu macro
@ 2022-02-15 15:37 Jiri Olsa
2022-02-15 17:12 ` Ian Rogers
0 siblings, 1 reply; 3+ messages in thread
From: Jiri Olsa @ 2022-02-15 15:37 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo
Cc: Tzvetomir Stoyanov, lkml, Peter Zijlstra, Ingo Molnar,
Mark Rutland, Namhyung Kim, Alexander Shishkin, Ian Rogers,
linux-perf-users
Tzvetomir Stoyanov reported an issue with using macro
perf_cpu_map__for_each_cpu using private perf_cpu object.
The issue is caused by recent change that wrapped cpu in struct
perf_cpu to distinguish it from cpu indexes. We need to make
struct perf_cpu public.
Adding simple test for using perf_cpu_map__for_each_cpu
macro.
Fixes: 6d18804b963b ("perf cpumap: Give CPUs their own type")
Reported-by: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/lib/perf/include/internal/cpumap.h | 6 +-----
tools/lib/perf/include/perf/cpumap.h | 5 +++++
tools/lib/perf/libperf.map | 1 +
tools/lib/perf/tests/test-cpumap.c | 11 +++++++++++
4 files changed, 18 insertions(+), 5 deletions(-)
diff --git a/tools/lib/perf/include/internal/cpumap.h b/tools/lib/perf/include/internal/cpumap.h
index 581f9ffb4237..1973a18c096b 100644
--- a/tools/lib/perf/include/internal/cpumap.h
+++ b/tools/lib/perf/include/internal/cpumap.h
@@ -3,11 +3,7 @@
#define __LIBPERF_INTERNAL_CPUMAP_H
#include <linux/refcount.h>
-
-/** A wrapper around a CPU to avoid confusion with the perf_cpu_map's map's indices. */
-struct perf_cpu {
- int cpu;
-};
+#include <perf/cpumap.h>
/**
* A sized, reference counted, sorted array of integers representing CPU
diff --git a/tools/lib/perf/include/perf/cpumap.h b/tools/lib/perf/include/perf/cpumap.h
index 15b8faafd615..4a2edbdb5e2b 100644
--- a/tools/lib/perf/include/perf/cpumap.h
+++ b/tools/lib/perf/include/perf/cpumap.h
@@ -7,6 +7,11 @@
#include <stdio.h>
#include <stdbool.h>
+/** A wrapper around a CPU to avoid confusion with the perf_cpu_map's map's indices. */
+struct perf_cpu {
+ int cpu;
+};
+
LIBPERF_API struct perf_cpu_map *perf_cpu_map__dummy_new(void);
LIBPERF_API struct perf_cpu_map *perf_cpu_map__default_new(void);
LIBPERF_API struct perf_cpu_map *perf_cpu_map__new(const char *cpu_list);
diff --git a/tools/lib/perf/libperf.map b/tools/lib/perf/libperf.map
index 93696affda2e..6fa0d651576b 100644
--- a/tools/lib/perf/libperf.map
+++ b/tools/lib/perf/libperf.map
@@ -2,6 +2,7 @@ LIBPERF_0.0.1 {
global:
libperf_init;
perf_cpu_map__dummy_new;
+ perf_cpu_map__default_new;
perf_cpu_map__get;
perf_cpu_map__put;
perf_cpu_map__new;
diff --git a/tools/lib/perf/tests/test-cpumap.c b/tools/lib/perf/tests/test-cpumap.c
index d39378eaf897..87b0510a556f 100644
--- a/tools/lib/perf/tests/test-cpumap.c
+++ b/tools/lib/perf/tests/test-cpumap.c
@@ -14,6 +14,8 @@ static int libperf_print(enum libperf_print_level level,
int test_cpumap(int argc, char **argv)
{
struct perf_cpu_map *cpus;
+ struct perf_cpu cpu;
+ int idx;
__T_START;
@@ -27,6 +29,15 @@ int test_cpumap(int argc, char **argv)
perf_cpu_map__put(cpus);
perf_cpu_map__put(cpus);
+ cpus = perf_cpu_map__default_new();
+ if (!cpus)
+ return -1;
+
+ perf_cpu_map__for_each_cpu(cpu, idx, cpus)
+ __T("wrong cpu number", cpu.cpu != -1);
+
+ perf_cpu_map__put(cpus);
+
__T_END;
return tests_failed == 0 ? 0 : -1;
}
--
2.35.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] libperf: Fix perf_cpu_map__for_each_cpu macro
2022-02-15 15:37 [PATCH] libperf: Fix perf_cpu_map__for_each_cpu macro Jiri Olsa
@ 2022-02-15 17:12 ` Ian Rogers
2022-02-15 20:41 ` Arnaldo Carvalho de Melo
0 siblings, 1 reply; 3+ messages in thread
From: Ian Rogers @ 2022-02-15 17:12 UTC (permalink / raw)
To: Jiri Olsa
Cc: Arnaldo Carvalho de Melo, Tzvetomir Stoyanov, lkml,
Peter Zijlstra, Ingo Molnar, Mark Rutland, Namhyung Kim,
Alexander Shishkin, linux-perf-users
On Tue, Feb 15, 2022 at 7:37 AM Jiri Olsa <jolsa@kernel.org> wrote:
>
> Tzvetomir Stoyanov reported an issue with using macro
> perf_cpu_map__for_each_cpu using private perf_cpu object.
>
> The issue is caused by recent change that wrapped cpu in struct
> perf_cpu to distinguish it from cpu indexes. We need to make
> struct perf_cpu public.
>
> Adding simple test for using perf_cpu_map__for_each_cpu
> macro.
>
> Fixes: 6d18804b963b ("perf cpumap: Give CPUs their own type")
> Reported-by: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Ian Rogers <irogers@google.com>
Thanks,
Ian
> ---
> tools/lib/perf/include/internal/cpumap.h | 6 +-----
> tools/lib/perf/include/perf/cpumap.h | 5 +++++
> tools/lib/perf/libperf.map | 1 +
> tools/lib/perf/tests/test-cpumap.c | 11 +++++++++++
> 4 files changed, 18 insertions(+), 5 deletions(-)
>
> diff --git a/tools/lib/perf/include/internal/cpumap.h b/tools/lib/perf/include/internal/cpumap.h
> index 581f9ffb4237..1973a18c096b 100644
> --- a/tools/lib/perf/include/internal/cpumap.h
> +++ b/tools/lib/perf/include/internal/cpumap.h
> @@ -3,11 +3,7 @@
> #define __LIBPERF_INTERNAL_CPUMAP_H
>
> #include <linux/refcount.h>
> -
> -/** A wrapper around a CPU to avoid confusion with the perf_cpu_map's map's indices. */
> -struct perf_cpu {
> - int cpu;
> -};
> +#include <perf/cpumap.h>
>
> /**
> * A sized, reference counted, sorted array of integers representing CPU
> diff --git a/tools/lib/perf/include/perf/cpumap.h b/tools/lib/perf/include/perf/cpumap.h
> index 15b8faafd615..4a2edbdb5e2b 100644
> --- a/tools/lib/perf/include/perf/cpumap.h
> +++ b/tools/lib/perf/include/perf/cpumap.h
> @@ -7,6 +7,11 @@
> #include <stdio.h>
> #include <stdbool.h>
>
> +/** A wrapper around a CPU to avoid confusion with the perf_cpu_map's map's indices. */
> +struct perf_cpu {
> + int cpu;
> +};
> +
> LIBPERF_API struct perf_cpu_map *perf_cpu_map__dummy_new(void);
> LIBPERF_API struct perf_cpu_map *perf_cpu_map__default_new(void);
> LIBPERF_API struct perf_cpu_map *perf_cpu_map__new(const char *cpu_list);
> diff --git a/tools/lib/perf/libperf.map b/tools/lib/perf/libperf.map
> index 93696affda2e..6fa0d651576b 100644
> --- a/tools/lib/perf/libperf.map
> +++ b/tools/lib/perf/libperf.map
> @@ -2,6 +2,7 @@ LIBPERF_0.0.1 {
> global:
> libperf_init;
> perf_cpu_map__dummy_new;
> + perf_cpu_map__default_new;
> perf_cpu_map__get;
> perf_cpu_map__put;
> perf_cpu_map__new;
> diff --git a/tools/lib/perf/tests/test-cpumap.c b/tools/lib/perf/tests/test-cpumap.c
> index d39378eaf897..87b0510a556f 100644
> --- a/tools/lib/perf/tests/test-cpumap.c
> +++ b/tools/lib/perf/tests/test-cpumap.c
> @@ -14,6 +14,8 @@ static int libperf_print(enum libperf_print_level level,
> int test_cpumap(int argc, char **argv)
> {
> struct perf_cpu_map *cpus;
> + struct perf_cpu cpu;
> + int idx;
>
> __T_START;
>
> @@ -27,6 +29,15 @@ int test_cpumap(int argc, char **argv)
> perf_cpu_map__put(cpus);
> perf_cpu_map__put(cpus);
>
> + cpus = perf_cpu_map__default_new();
> + if (!cpus)
> + return -1;
> +
> + perf_cpu_map__for_each_cpu(cpu, idx, cpus)
> + __T("wrong cpu number", cpu.cpu != -1);
> +
> + perf_cpu_map__put(cpus);
> +
> __T_END;
> return tests_failed == 0 ? 0 : -1;
> }
> --
> 2.35.1
>
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] libperf: Fix perf_cpu_map__for_each_cpu macro
2022-02-15 17:12 ` Ian Rogers
@ 2022-02-15 20:41 ` Arnaldo Carvalho de Melo
0 siblings, 0 replies; 3+ messages in thread
From: Arnaldo Carvalho de Melo @ 2022-02-15 20:41 UTC (permalink / raw)
To: Ian Rogers
Cc: Jiri Olsa, Tzvetomir Stoyanov, lkml, Peter Zijlstra, Ingo Molnar,
Mark Rutland, Namhyung Kim, Alexander Shishkin, linux-perf-users
Em Tue, Feb 15, 2022 at 09:12:57AM -0800, Ian Rogers escreveu:
> On Tue, Feb 15, 2022 at 7:37 AM Jiri Olsa <jolsa@kernel.org> wrote:
> >
> > Tzvetomir Stoyanov reported an issue with using macro
> > perf_cpu_map__for_each_cpu using private perf_cpu object.
> >
> > The issue is caused by recent change that wrapped cpu in struct
> > perf_cpu to distinguish it from cpu indexes. We need to make
> > struct perf_cpu public.
> >
> > Adding simple test for using perf_cpu_map__for_each_cpu
> > macro.
> >
> > Fixes: 6d18804b963b ("perf cpumap: Give CPUs their own type")
> > Reported-by: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
> > Signed-off-by: Jiri Olsa <jolsa@kernel.org>
>
> Acked-by: Ian Rogers <irogers@google.com>
Thanks, applied.
- Arnaldo
> Thanks,
> Ian
>
> > ---
> > tools/lib/perf/include/internal/cpumap.h | 6 +-----
> > tools/lib/perf/include/perf/cpumap.h | 5 +++++
> > tools/lib/perf/libperf.map | 1 +
> > tools/lib/perf/tests/test-cpumap.c | 11 +++++++++++
> > 4 files changed, 18 insertions(+), 5 deletions(-)
> >
> > diff --git a/tools/lib/perf/include/internal/cpumap.h b/tools/lib/perf/include/internal/cpumap.h
> > index 581f9ffb4237..1973a18c096b 100644
> > --- a/tools/lib/perf/include/internal/cpumap.h
> > +++ b/tools/lib/perf/include/internal/cpumap.h
> > @@ -3,11 +3,7 @@
> > #define __LIBPERF_INTERNAL_CPUMAP_H
> >
> > #include <linux/refcount.h>
> > -
> > -/** A wrapper around a CPU to avoid confusion with the perf_cpu_map's map's indices. */
> > -struct perf_cpu {
> > - int cpu;
> > -};
> > +#include <perf/cpumap.h>
> >
> > /**
> > * A sized, reference counted, sorted array of integers representing CPU
> > diff --git a/tools/lib/perf/include/perf/cpumap.h b/tools/lib/perf/include/perf/cpumap.h
> > index 15b8faafd615..4a2edbdb5e2b 100644
> > --- a/tools/lib/perf/include/perf/cpumap.h
> > +++ b/tools/lib/perf/include/perf/cpumap.h
> > @@ -7,6 +7,11 @@
> > #include <stdio.h>
> > #include <stdbool.h>
> >
> > +/** A wrapper around a CPU to avoid confusion with the perf_cpu_map's map's indices. */
> > +struct perf_cpu {
> > + int cpu;
> > +};
> > +
> > LIBPERF_API struct perf_cpu_map *perf_cpu_map__dummy_new(void);
> > LIBPERF_API struct perf_cpu_map *perf_cpu_map__default_new(void);
> > LIBPERF_API struct perf_cpu_map *perf_cpu_map__new(const char *cpu_list);
> > diff --git a/tools/lib/perf/libperf.map b/tools/lib/perf/libperf.map
> > index 93696affda2e..6fa0d651576b 100644
> > --- a/tools/lib/perf/libperf.map
> > +++ b/tools/lib/perf/libperf.map
> > @@ -2,6 +2,7 @@ LIBPERF_0.0.1 {
> > global:
> > libperf_init;
> > perf_cpu_map__dummy_new;
> > + perf_cpu_map__default_new;
> > perf_cpu_map__get;
> > perf_cpu_map__put;
> > perf_cpu_map__new;
> > diff --git a/tools/lib/perf/tests/test-cpumap.c b/tools/lib/perf/tests/test-cpumap.c
> > index d39378eaf897..87b0510a556f 100644
> > --- a/tools/lib/perf/tests/test-cpumap.c
> > +++ b/tools/lib/perf/tests/test-cpumap.c
> > @@ -14,6 +14,8 @@ static int libperf_print(enum libperf_print_level level,
> > int test_cpumap(int argc, char **argv)
> > {
> > struct perf_cpu_map *cpus;
> > + struct perf_cpu cpu;
> > + int idx;
> >
> > __T_START;
> >
> > @@ -27,6 +29,15 @@ int test_cpumap(int argc, char **argv)
> > perf_cpu_map__put(cpus);
> > perf_cpu_map__put(cpus);
> >
> > + cpus = perf_cpu_map__default_new();
> > + if (!cpus)
> > + return -1;
> > +
> > + perf_cpu_map__for_each_cpu(cpu, idx, cpus)
> > + __T("wrong cpu number", cpu.cpu != -1);
> > +
> > + perf_cpu_map__put(cpus);
> > +
> > __T_END;
> > return tests_failed == 0 ? 0 : -1;
> > }
> > --
> > 2.35.1
> >
--
- Arnaldo
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-02-15 20:42 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-02-15 15:37 [PATCH] libperf: Fix perf_cpu_map__for_each_cpu macro Jiri Olsa
2022-02-15 17:12 ` Ian Rogers
2022-02-15 20:41 ` Arnaldo Carvalho de Melo
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.