* [PATCH v2 1/2] perf build: Properly guard libbpf includes
@ 2023-01-06 14:25 Ian Rogers
2023-01-06 14:25 ` [PATCH v2 2/2] perf build: Fix build error when NO_LIBBPF=1 Ian Rogers
2023-01-06 14:55 ` [PATCH v2 1/2] perf build: Properly guard libbpf includes Arnaldo Carvalho de Melo
0 siblings, 2 replies; 6+ messages in thread
From: Ian Rogers @ 2023-01-06 14:25 UTC (permalink / raw)
To: Mike Leach, linux-perf-users, linux-kernel, bpf, acme, irogers,
peterz, mingo, mark.rutland, alexander.shishkin, jolsa, namhyung
Including libbpf header files should be guarded by
HAVE_LIBBPF_SUPPORT. In bpf_counter.h, move the skeleton utilities
under HAVE_BPF_SKEL.
Fixes: d6a735ef3277 ("perf bpf_counter: Move common functions to bpf_counter.h")
Reported-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/builtin-trace.c | 2 +
tools/perf/util/bpf_counter.h | 85 ++++++++++++++++++-----------------
2 files changed, 46 insertions(+), 41 deletions(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 86e06f136f40..d21fe0f32a6d 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -16,7 +16,9 @@
#include "util/record.h"
#include <api/fs/tracing_path.h>
+#ifdef HAVE_LIBBPF_SUPPORT
#include <bpf/bpf.h>
+#endif
#include "util/bpf_map.h"
#include "util/rlimit.h"
#include "builtin.h"
diff --git a/tools/perf/util/bpf_counter.h b/tools/perf/util/bpf_counter.h
index 4dbf26408b69..9113c8bf5cb0 100644
--- a/tools/perf/util/bpf_counter.h
+++ b/tools/perf/util/bpf_counter.h
@@ -4,9 +4,12 @@
#include <linux/list.h>
#include <sys/resource.h>
+
+#ifdef HAVE_LIBBPF_SUPPORT
#include <bpf/bpf.h>
#include <bpf/btf.h>
#include <bpf/libbpf.h>
+#endif
struct evsel;
struct target;
@@ -42,6 +45,47 @@ int bpf_counter__read(struct evsel *evsel);
void bpf_counter__destroy(struct evsel *evsel);
int bpf_counter__install_pe(struct evsel *evsel, int cpu_map_idx, int fd);
+static inline __u32 bpf_link_get_id(int fd)
+{
+ struct bpf_link_info link_info = { .id = 0, };
+ __u32 link_info_len = sizeof(link_info);
+
+ bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
+ return link_info.id;
+}
+
+static inline __u32 bpf_link_get_prog_id(int fd)
+{
+ struct bpf_link_info link_info = { .id = 0, };
+ __u32 link_info_len = sizeof(link_info);
+
+ bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
+ return link_info.prog_id;
+}
+
+static inline __u32 bpf_map_get_id(int fd)
+{
+ struct bpf_map_info map_info = { .id = 0, };
+ __u32 map_info_len = sizeof(map_info);
+
+ bpf_obj_get_info_by_fd(fd, &map_info, &map_info_len);
+ return map_info.id;
+}
+
+/* trigger the leader program on a cpu */
+static inline int bperf_trigger_reading(int prog_fd, int cpu)
+{
+ DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
+ .ctx_in = NULL,
+ .ctx_size_in = 0,
+ .flags = BPF_F_TEST_RUN_ON_CPU,
+ .cpu = cpu,
+ .retval = 0,
+ );
+
+ return bpf_prog_test_run_opts(prog_fd, &opts);
+}
+
#else /* HAVE_BPF_SKEL */
#include <linux/err.h>
@@ -87,45 +131,4 @@ static inline void set_max_rlimit(void)
setrlimit(RLIMIT_MEMLOCK, &rinf);
}
-static inline __u32 bpf_link_get_id(int fd)
-{
- struct bpf_link_info link_info = { .id = 0, };
- __u32 link_info_len = sizeof(link_info);
-
- bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
- return link_info.id;
-}
-
-static inline __u32 bpf_link_get_prog_id(int fd)
-{
- struct bpf_link_info link_info = { .id = 0, };
- __u32 link_info_len = sizeof(link_info);
-
- bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
- return link_info.prog_id;
-}
-
-static inline __u32 bpf_map_get_id(int fd)
-{
- struct bpf_map_info map_info = { .id = 0, };
- __u32 map_info_len = sizeof(map_info);
-
- bpf_obj_get_info_by_fd(fd, &map_info, &map_info_len);
- return map_info.id;
-}
-
-/* trigger the leader program on a cpu */
-static inline int bperf_trigger_reading(int prog_fd, int cpu)
-{
- DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
- .ctx_in = NULL,
- .ctx_size_in = 0,
- .flags = BPF_F_TEST_RUN_ON_CPU,
- .cpu = cpu,
- .retval = 0,
- );
-
- return bpf_prog_test_run_opts(prog_fd, &opts);
-}
-
#endif /* __PERF_BPF_COUNTER_H */
--
2.39.0.314.g84b9a713c41-goog
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v2 2/2] perf build: Fix build error when NO_LIBBPF=1
2023-01-06 14:25 [PATCH v2 1/2] perf build: Properly guard libbpf includes Ian Rogers
@ 2023-01-06 14:25 ` Ian Rogers
2023-01-06 15:12 ` Mike Leach
2023-01-06 14:55 ` [PATCH v2 1/2] perf build: Properly guard libbpf includes Arnaldo Carvalho de Melo
1 sibling, 1 reply; 6+ messages in thread
From: Ian Rogers @ 2023-01-06 14:25 UTC (permalink / raw)
To: Mike Leach, linux-perf-users, linux-kernel, bpf, acme, irogers,
peterz, mingo, mark.rutland, alexander.shishkin, jolsa, namhyung
The $(LIBBPF) target should only be a dependency of prepare if the
static version of libbpf is needed. Add a new LIBBPF_STATIC variable
that is set by Makefile.config. Use LIBBPF_STATIC to determine whether
the CFLAGS, etc. need updating and for adding $(LIBBPF) as a prepare
dependency.
As Makefile.config isn't loaded for "clean" as a target, always set
LIBBPF_OUTPUT regardless of whether it is needed for $(LIBBPF). This
is done to minimize conditional logic for $(LIBBPF)-clean.
This issue and an original fix was reported by Mike Leach in:
https://lore.kernel.org/lkml/20230105172243.7238-1-mike.leach@linaro.org/
Fixes: 746bd29e348f ("perf build: Use tools/lib headers from install path")
Reported-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/Makefile.config | 2 ++
tools/perf/Makefile.perf | 21 ++++++++++++---------
2 files changed, 14 insertions(+), 9 deletions(-)
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index c2504c39bdcb..7c00ce0a7464 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -602,6 +602,8 @@ ifndef NO_LIBELF
dummy := $(error Error: No libbpf devel library found, please install libbpf-devel);
endif
else
+ # Libbpf will be built as a static library from tools/lib/bpf.
+ LIBBPF_STATIC := 1
CFLAGS += -DHAVE_LIBBPF_BTF__LOAD_FROM_KERNEL_BY_ID
CFLAGS += -DHAVE_LIBBPF_BPF_PROG_LOAD
CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_PROGRAM
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 13e7d26e77f0..4e370462e7e1 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -303,10 +303,12 @@ ifneq ($(OUTPUT),)
else
LIBBPF_OUTPUT = $(CURDIR)/libbpf
endif
-LIBBPF_DESTDIR = $(LIBBPF_OUTPUT)
-LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include
-LIBBPF = $(LIBBPF_OUTPUT)/libbpf.a
-CFLAGS += -I$(LIBBPF_OUTPUT)/include
+ifdef LIBBPF_STATIC
+ LIBBPF_DESTDIR = $(LIBBPF_OUTPUT)
+ LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include
+ LIBBPF = $(LIBBPF_OUTPUT)/libbpf.a
+ CFLAGS += -I$(LIBBPF_OUTPUT)/include
+endif
ifneq ($(OUTPUT),)
LIBSUBCMD_OUTPUT = $(abspath $(OUTPUT))/libsubcmd
@@ -393,10 +395,8 @@ endif
export PERL_PATH
PERFLIBS = $(LIBAPI) $(LIBPERF) $(LIBSUBCMD) $(LIBSYMBOL)
-ifndef NO_LIBBPF
- ifndef LIBBPF_DYNAMIC
- PERFLIBS += $(LIBBPF)
- endif
+ifdef LIBBPF_STATIC
+ PERFLIBS += $(LIBBPF)
endif
# We choose to avoid "if .. else if .. else .. endif endif"
@@ -756,12 +756,15 @@ prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h archheaders $(drm_ioc
$(arch_errno_name_array) \
$(sync_file_range_arrays) \
$(LIBAPI) \
- $(LIBBPF) \
$(LIBPERF) \
$(LIBSUBCMD) \
$(LIBSYMBOL) \
bpf-skel
+ifdef LIBBPF_STATIC
+prepare: $(LIBBPF)
+endif
+
$(OUTPUT)%.o: %.c prepare FORCE
$(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@
--
2.39.0.314.g84b9a713c41-goog
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v2 1/2] perf build: Properly guard libbpf includes
2023-01-06 14:25 [PATCH v2 1/2] perf build: Properly guard libbpf includes Ian Rogers
2023-01-06 14:25 ` [PATCH v2 2/2] perf build: Fix build error when NO_LIBBPF=1 Ian Rogers
@ 2023-01-06 14:55 ` Arnaldo Carvalho de Melo
2023-01-06 15:12 ` Mike Leach
1 sibling, 1 reply; 6+ messages in thread
From: Arnaldo Carvalho de Melo @ 2023-01-06 14:55 UTC (permalink / raw)
To: Ian Rogers
Cc: Mike Leach, linux-perf-users, linux-kernel, bpf, peterz, mingo,
mark.rutland, alexander.shishkin, jolsa, namhyung
Em Fri, Jan 06, 2023 at 06:25:36AM -0800, Ian Rogers escreveu:
> Including libbpf header files should be guarded by
> HAVE_LIBBPF_SUPPORT. In bpf_counter.h, move the skeleton utilities
> under HAVE_BPF_SKEL.
>
> Fixes: d6a735ef3277 ("perf bpf_counter: Move common functions to bpf_counter.h")
> Reported-by: Mike Leach <mike.leach@linaro.org>
> Signed-off-by: Ian Rogers <irogers@google.com>
Can this be done in a way that reduces patch size?
- Arnaldo
> ---
> tools/perf/builtin-trace.c | 2 +
> tools/perf/util/bpf_counter.h | 85 ++++++++++++++++++-----------------
> 2 files changed, 46 insertions(+), 41 deletions(-)
>
> diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
> index 86e06f136f40..d21fe0f32a6d 100644
> --- a/tools/perf/builtin-trace.c
> +++ b/tools/perf/builtin-trace.c
> @@ -16,7 +16,9 @@
>
> #include "util/record.h"
> #include <api/fs/tracing_path.h>
> +#ifdef HAVE_LIBBPF_SUPPORT
> #include <bpf/bpf.h>
> +#endif
> #include "util/bpf_map.h"
> #include "util/rlimit.h"
> #include "builtin.h"
> diff --git a/tools/perf/util/bpf_counter.h b/tools/perf/util/bpf_counter.h
> index 4dbf26408b69..9113c8bf5cb0 100644
> --- a/tools/perf/util/bpf_counter.h
> +++ b/tools/perf/util/bpf_counter.h
> @@ -4,9 +4,12 @@
>
> #include <linux/list.h>
> #include <sys/resource.h>
> +
> +#ifdef HAVE_LIBBPF_SUPPORT
> #include <bpf/bpf.h>
> #include <bpf/btf.h>
> #include <bpf/libbpf.h>
> +#endif
>
> struct evsel;
> struct target;
> @@ -42,6 +45,47 @@ int bpf_counter__read(struct evsel *evsel);
> void bpf_counter__destroy(struct evsel *evsel);
> int bpf_counter__install_pe(struct evsel *evsel, int cpu_map_idx, int fd);
>
> +static inline __u32 bpf_link_get_id(int fd)
> +{
> + struct bpf_link_info link_info = { .id = 0, };
> + __u32 link_info_len = sizeof(link_info);
> +
> + bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
> + return link_info.id;
> +}
> +
> +static inline __u32 bpf_link_get_prog_id(int fd)
> +{
> + struct bpf_link_info link_info = { .id = 0, };
> + __u32 link_info_len = sizeof(link_info);
> +
> + bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
> + return link_info.prog_id;
> +}
> +
> +static inline __u32 bpf_map_get_id(int fd)
> +{
> + struct bpf_map_info map_info = { .id = 0, };
> + __u32 map_info_len = sizeof(map_info);
> +
> + bpf_obj_get_info_by_fd(fd, &map_info, &map_info_len);
> + return map_info.id;
> +}
> +
> +/* trigger the leader program on a cpu */
> +static inline int bperf_trigger_reading(int prog_fd, int cpu)
> +{
> + DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
> + .ctx_in = NULL,
> + .ctx_size_in = 0,
> + .flags = BPF_F_TEST_RUN_ON_CPU,
> + .cpu = cpu,
> + .retval = 0,
> + );
> +
> + return bpf_prog_test_run_opts(prog_fd, &opts);
> +}
> +
> #else /* HAVE_BPF_SKEL */
>
> #include <linux/err.h>
> @@ -87,45 +131,4 @@ static inline void set_max_rlimit(void)
> setrlimit(RLIMIT_MEMLOCK, &rinf);
> }
>
> -static inline __u32 bpf_link_get_id(int fd)
> -{
> - struct bpf_link_info link_info = { .id = 0, };
> - __u32 link_info_len = sizeof(link_info);
> -
> - bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
> - return link_info.id;
> -}
> -
> -static inline __u32 bpf_link_get_prog_id(int fd)
> -{
> - struct bpf_link_info link_info = { .id = 0, };
> - __u32 link_info_len = sizeof(link_info);
> -
> - bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
> - return link_info.prog_id;
> -}
> -
> -static inline __u32 bpf_map_get_id(int fd)
> -{
> - struct bpf_map_info map_info = { .id = 0, };
> - __u32 map_info_len = sizeof(map_info);
> -
> - bpf_obj_get_info_by_fd(fd, &map_info, &map_info_len);
> - return map_info.id;
> -}
> -
> -/* trigger the leader program on a cpu */
> -static inline int bperf_trigger_reading(int prog_fd, int cpu)
> -{
> - DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
> - .ctx_in = NULL,
> - .ctx_size_in = 0,
> - .flags = BPF_F_TEST_RUN_ON_CPU,
> - .cpu = cpu,
> - .retval = 0,
> - );
> -
> - return bpf_prog_test_run_opts(prog_fd, &opts);
> -}
> -
> #endif /* __PERF_BPF_COUNTER_H */
> --
> 2.39.0.314.g84b9a713c41-goog
--
- Arnaldo
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2 1/2] perf build: Properly guard libbpf includes
2023-01-06 14:55 ` [PATCH v2 1/2] perf build: Properly guard libbpf includes Arnaldo Carvalho de Melo
@ 2023-01-06 15:12 ` Mike Leach
2023-01-06 15:14 ` Ian Rogers
0 siblings, 1 reply; 6+ messages in thread
From: Mike Leach @ 2023-01-06 15:12 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo
Cc: Ian Rogers, linux-perf-users, linux-kernel, bpf, peterz, mingo,
mark.rutland, alexander.shishkin, jolsa, namhyung
On Fri, 6 Jan 2023 at 14:55, Arnaldo Carvalho de Melo <acme@kernel.org> wrote:
>
> Em Fri, Jan 06, 2023 at 06:25:36AM -0800, Ian Rogers escreveu:
> > Including libbpf header files should be guarded by
> > HAVE_LIBBPF_SUPPORT. In bpf_counter.h, move the skeleton utilities
> > under HAVE_BPF_SKEL.
> >
> > Fixes: d6a735ef3277 ("perf bpf_counter: Move common functions to bpf_counter.h")
> > Reported-by: Mike Leach <mike.leach@linaro.org>
> > Signed-off-by: Ian Rogers <irogers@google.com>
>
> Can this be done in a way that reduces patch size?
>
> - Arnaldo
>
> > ---
> > tools/perf/builtin-trace.c | 2 +
> > tools/perf/util/bpf_counter.h | 85 ++++++++++++++++++-----------------
> > 2 files changed, 46 insertions(+), 41 deletions(-)
> >
> > diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
> > index 86e06f136f40..d21fe0f32a6d 100644
> > --- a/tools/perf/builtin-trace.c
> > +++ b/tools/perf/builtin-trace.c
> > @@ -16,7 +16,9 @@
> >
> > #include "util/record.h"
> > #include <api/fs/tracing_path.h>
> > +#ifdef HAVE_LIBBPF_SUPPORT
> > #include <bpf/bpf.h>
> > +#endif
> > #include "util/bpf_map.h"
> > #include "util/rlimit.h"
> > #include "builtin.h"
> > diff --git a/tools/perf/util/bpf_counter.h b/tools/perf/util/bpf_counter.h
> > index 4dbf26408b69..9113c8bf5cb0 100644
> > --- a/tools/perf/util/bpf_counter.h
> > +++ b/tools/perf/util/bpf_counter.h
> > @@ -4,9 +4,12 @@
> >
> > #include <linux/list.h>
> > #include <sys/resource.h>
> > +
> > +#ifdef HAVE_LIBBPF_SUPPORT
> > #include <bpf/bpf.h>
> > #include <bpf/btf.h>
> > #include <bpf/libbpf.h>
> > +#endif
> >
> > struct evsel;
> > struct target;
> > @@ -42,6 +45,47 @@ int bpf_counter__read(struct evsel *evsel);
> > void bpf_counter__destroy(struct evsel *evsel);
> > int bpf_counter__install_pe(struct evsel *evsel, int cpu_map_idx, int fd);
> >
> > +static inline __u32 bpf_link_get_id(int fd)
> > +{
> > + struct bpf_link_info link_info = { .id = 0, };
> > + __u32 link_info_len = sizeof(link_info);
> > +
> > + bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
> > + return link_info.id;
> > +}
> > +
> > +static inline __u32 bpf_link_get_prog_id(int fd)
> > +{
> > + struct bpf_link_info link_info = { .id = 0, };
> > + __u32 link_info_len = sizeof(link_info);
> > +
> > + bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
> > + return link_info.prog_id;
> > +}
> > +
> > +static inline __u32 bpf_map_get_id(int fd)
> > +{
> > + struct bpf_map_info map_info = { .id = 0, };
> > + __u32 map_info_len = sizeof(map_info);
> > +
> > + bpf_obj_get_info_by_fd(fd, &map_info, &map_info_len);
> > + return map_info.id;
> > +}
> > +
> > +/* trigger the leader program on a cpu */
> > +static inline int bperf_trigger_reading(int prog_fd, int cpu)
> > +{
> > + DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
> > + .ctx_in = NULL,
> > + .ctx_size_in = 0,
> > + .flags = BPF_F_TEST_RUN_ON_CPU,
> > + .cpu = cpu,
> > + .retval = 0,
> > + );
> > +
> > + return bpf_prog_test_run_opts(prog_fd, &opts);
> > +}
> > +
> > #else /* HAVE_BPF_SKEL */
> >
> > #include <linux/err.h>
> > @@ -87,45 +131,4 @@ static inline void set_max_rlimit(void)
> > setrlimit(RLIMIT_MEMLOCK, &rinf);
> > }
> >
> > -static inline __u32 bpf_link_get_id(int fd)
> > -{
> > - struct bpf_link_info link_info = { .id = 0, };
> > - __u32 link_info_len = sizeof(link_info);
> > -
> > - bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
> > - return link_info.id;
> > -}
> > -
> > -static inline __u32 bpf_link_get_prog_id(int fd)
> > -{
> > - struct bpf_link_info link_info = { .id = 0, };
> > - __u32 link_info_len = sizeof(link_info);
> > -
> > - bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
> > - return link_info.prog_id;
> > -}
> > -
> > -static inline __u32 bpf_map_get_id(int fd)
> > -{
> > - struct bpf_map_info map_info = { .id = 0, };
> > - __u32 map_info_len = sizeof(map_info);
> > -
> > - bpf_obj_get_info_by_fd(fd, &map_info, &map_info_len);
> > - return map_info.id;
> > -}
> > -
> > -/* trigger the leader program on a cpu */
> > -static inline int bperf_trigger_reading(int prog_fd, int cpu)
> > -{
> > - DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
> > - .ctx_in = NULL,
> > - .ctx_size_in = 0,
> > - .flags = BPF_F_TEST_RUN_ON_CPU,
> > - .cpu = cpu,
> > - .retval = 0,
> > - );
> > -
> > - return bpf_prog_test_run_opts(prog_fd, &opts);
> > -}
> > -
> > #endif /* __PERF_BPF_COUNTER_H */
> > --
> > 2.39.0.314.g84b9a713c41-goog
>
Tested-by: Mike Leach <mike.leach@linaro.org>
> --
>
> - Arnaldo
--
Mike Leach
Principal Engineer, ARM Ltd.
Manchester Design Centre. UK
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2 2/2] perf build: Fix build error when NO_LIBBPF=1
2023-01-06 14:25 ` [PATCH v2 2/2] perf build: Fix build error when NO_LIBBPF=1 Ian Rogers
@ 2023-01-06 15:12 ` Mike Leach
0 siblings, 0 replies; 6+ messages in thread
From: Mike Leach @ 2023-01-06 15:12 UTC (permalink / raw)
To: Ian Rogers
Cc: linux-perf-users, linux-kernel, bpf, acme, peterz, mingo,
mark.rutland, alexander.shishkin, jolsa, namhyung
On Fri, 6 Jan 2023 at 14:25, Ian Rogers <irogers@google.com> wrote:
>
> The $(LIBBPF) target should only be a dependency of prepare if the
> static version of libbpf is needed. Add a new LIBBPF_STATIC variable
> that is set by Makefile.config. Use LIBBPF_STATIC to determine whether
> the CFLAGS, etc. need updating and for adding $(LIBBPF) as a prepare
> dependency.
>
> As Makefile.config isn't loaded for "clean" as a target, always set
> LIBBPF_OUTPUT regardless of whether it is needed for $(LIBBPF). This
> is done to minimize conditional logic for $(LIBBPF)-clean.
>
> This issue and an original fix was reported by Mike Leach in:
> https://lore.kernel.org/lkml/20230105172243.7238-1-mike.leach@linaro.org/
>
> Fixes: 746bd29e348f ("perf build: Use tools/lib headers from install path")
> Reported-by: Mike Leach <mike.leach@linaro.org>
> Signed-off-by: Ian Rogers <irogers@google.com>
> ---
> tools/perf/Makefile.config | 2 ++
> tools/perf/Makefile.perf | 21 ++++++++++++---------
> 2 files changed, 14 insertions(+), 9 deletions(-)
>
> diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
> index c2504c39bdcb..7c00ce0a7464 100644
> --- a/tools/perf/Makefile.config
> +++ b/tools/perf/Makefile.config
> @@ -602,6 +602,8 @@ ifndef NO_LIBELF
> dummy := $(error Error: No libbpf devel library found, please install libbpf-devel);
> endif
> else
> + # Libbpf will be built as a static library from tools/lib/bpf.
> + LIBBPF_STATIC := 1
> CFLAGS += -DHAVE_LIBBPF_BTF__LOAD_FROM_KERNEL_BY_ID
> CFLAGS += -DHAVE_LIBBPF_BPF_PROG_LOAD
> CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_PROGRAM
> diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
> index 13e7d26e77f0..4e370462e7e1 100644
> --- a/tools/perf/Makefile.perf
> +++ b/tools/perf/Makefile.perf
> @@ -303,10 +303,12 @@ ifneq ($(OUTPUT),)
> else
> LIBBPF_OUTPUT = $(CURDIR)/libbpf
> endif
> -LIBBPF_DESTDIR = $(LIBBPF_OUTPUT)
> -LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include
> -LIBBPF = $(LIBBPF_OUTPUT)/libbpf.a
> -CFLAGS += -I$(LIBBPF_OUTPUT)/include
> +ifdef LIBBPF_STATIC
> + LIBBPF_DESTDIR = $(LIBBPF_OUTPUT)
> + LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include
> + LIBBPF = $(LIBBPF_OUTPUT)/libbpf.a
> + CFLAGS += -I$(LIBBPF_OUTPUT)/include
> +endif
>
> ifneq ($(OUTPUT),)
> LIBSUBCMD_OUTPUT = $(abspath $(OUTPUT))/libsubcmd
> @@ -393,10 +395,8 @@ endif
> export PERL_PATH
>
> PERFLIBS = $(LIBAPI) $(LIBPERF) $(LIBSUBCMD) $(LIBSYMBOL)
> -ifndef NO_LIBBPF
> - ifndef LIBBPF_DYNAMIC
> - PERFLIBS += $(LIBBPF)
> - endif
> +ifdef LIBBPF_STATIC
> + PERFLIBS += $(LIBBPF)
> endif
>
> # We choose to avoid "if .. else if .. else .. endif endif"
> @@ -756,12 +756,15 @@ prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h archheaders $(drm_ioc
> $(arch_errno_name_array) \
> $(sync_file_range_arrays) \
> $(LIBAPI) \
> - $(LIBBPF) \
> $(LIBPERF) \
> $(LIBSUBCMD) \
> $(LIBSYMBOL) \
> bpf-skel
>
> +ifdef LIBBPF_STATIC
> +prepare: $(LIBBPF)
> +endif
> +
> $(OUTPUT)%.o: %.c prepare FORCE
> $(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@
>
> --
> 2.39.0.314.g84b9a713c41-goog
>
Tested-by: Mike Leach <mike.leach@linaro.org>
--
Mike Leach
Principal Engineer, ARM Ltd.
Manchester Design Centre. UK
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2 1/2] perf build: Properly guard libbpf includes
2023-01-06 15:12 ` Mike Leach
@ 2023-01-06 15:14 ` Ian Rogers
0 siblings, 0 replies; 6+ messages in thread
From: Ian Rogers @ 2023-01-06 15:14 UTC (permalink / raw)
To: Mike Leach
Cc: Arnaldo Carvalho de Melo, linux-perf-users, linux-kernel, bpf,
peterz, mingo, mark.rutland, alexander.shishkin, jolsa, namhyung
On Fri, Jan 6, 2023 at 7:12 AM Mike Leach <mike.leach@linaro.org> wrote:
>
> On Fri, 6 Jan 2023 at 14:55, Arnaldo Carvalho de Melo <acme@kernel.org> wrote:
> >
> > Em Fri, Jan 06, 2023 at 06:25:36AM -0800, Ian Rogers escreveu:
> > > Including libbpf header files should be guarded by
> > > HAVE_LIBBPF_SUPPORT. In bpf_counter.h, move the skeleton utilities
> > > under HAVE_BPF_SKEL.
> > >
> > > Fixes: d6a735ef3277 ("perf bpf_counter: Move common functions to bpf_counter.h")
> > > Reported-by: Mike Leach <mike.leach@linaro.org>
> > > Signed-off-by: Ian Rogers <irogers@google.com>
> >
> > Can this be done in a way that reduces patch size?
> >
> > - Arnaldo
Done in v3. Thanks,
Ian
> >
> > > ---
> > > tools/perf/builtin-trace.c | 2 +
> > > tools/perf/util/bpf_counter.h | 85 ++++++++++++++++++-----------------
> > > 2 files changed, 46 insertions(+), 41 deletions(-)
> > >
> > > diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
> > > index 86e06f136f40..d21fe0f32a6d 100644
> > > --- a/tools/perf/builtin-trace.c
> > > +++ b/tools/perf/builtin-trace.c
> > > @@ -16,7 +16,9 @@
> > >
> > > #include "util/record.h"
> > > #include <api/fs/tracing_path.h>
> > > +#ifdef HAVE_LIBBPF_SUPPORT
> > > #include <bpf/bpf.h>
> > > +#endif
> > > #include "util/bpf_map.h"
> > > #include "util/rlimit.h"
> > > #include "builtin.h"
> > > diff --git a/tools/perf/util/bpf_counter.h b/tools/perf/util/bpf_counter.h
> > > index 4dbf26408b69..9113c8bf5cb0 100644
> > > --- a/tools/perf/util/bpf_counter.h
> > > +++ b/tools/perf/util/bpf_counter.h
> > > @@ -4,9 +4,12 @@
> > >
> > > #include <linux/list.h>
> > > #include <sys/resource.h>
> > > +
> > > +#ifdef HAVE_LIBBPF_SUPPORT
> > > #include <bpf/bpf.h>
> > > #include <bpf/btf.h>
> > > #include <bpf/libbpf.h>
> > > +#endif
> > >
> > > struct evsel;
> > > struct target;
> > > @@ -42,6 +45,47 @@ int bpf_counter__read(struct evsel *evsel);
> > > void bpf_counter__destroy(struct evsel *evsel);
> > > int bpf_counter__install_pe(struct evsel *evsel, int cpu_map_idx, int fd);
> > >
> > > +static inline __u32 bpf_link_get_id(int fd)
> > > +{
> > > + struct bpf_link_info link_info = { .id = 0, };
> > > + __u32 link_info_len = sizeof(link_info);
> > > +
> > > + bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
> > > + return link_info.id;
> > > +}
> > > +
> > > +static inline __u32 bpf_link_get_prog_id(int fd)
> > > +{
> > > + struct bpf_link_info link_info = { .id = 0, };
> > > + __u32 link_info_len = sizeof(link_info);
> > > +
> > > + bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
> > > + return link_info.prog_id;
> > > +}
> > > +
> > > +static inline __u32 bpf_map_get_id(int fd)
> > > +{
> > > + struct bpf_map_info map_info = { .id = 0, };
> > > + __u32 map_info_len = sizeof(map_info);
> > > +
> > > + bpf_obj_get_info_by_fd(fd, &map_info, &map_info_len);
> > > + return map_info.id;
> > > +}
> > > +
> > > +/* trigger the leader program on a cpu */
> > > +static inline int bperf_trigger_reading(int prog_fd, int cpu)
> > > +{
> > > + DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
> > > + .ctx_in = NULL,
> > > + .ctx_size_in = 0,
> > > + .flags = BPF_F_TEST_RUN_ON_CPU,
> > > + .cpu = cpu,
> > > + .retval = 0,
> > > + );
> > > +
> > > + return bpf_prog_test_run_opts(prog_fd, &opts);
> > > +}
> > > +
> > > #else /* HAVE_BPF_SKEL */
> > >
> > > #include <linux/err.h>
> > > @@ -87,45 +131,4 @@ static inline void set_max_rlimit(void)
> > > setrlimit(RLIMIT_MEMLOCK, &rinf);
> > > }
> > >
> > > -static inline __u32 bpf_link_get_id(int fd)
> > > -{
> > > - struct bpf_link_info link_info = { .id = 0, };
> > > - __u32 link_info_len = sizeof(link_info);
> > > -
> > > - bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
> > > - return link_info.id;
> > > -}
> > > -
> > > -static inline __u32 bpf_link_get_prog_id(int fd)
> > > -{
> > > - struct bpf_link_info link_info = { .id = 0, };
> > > - __u32 link_info_len = sizeof(link_info);
> > > -
> > > - bpf_obj_get_info_by_fd(fd, &link_info, &link_info_len);
> > > - return link_info.prog_id;
> > > -}
> > > -
> > > -static inline __u32 bpf_map_get_id(int fd)
> > > -{
> > > - struct bpf_map_info map_info = { .id = 0, };
> > > - __u32 map_info_len = sizeof(map_info);
> > > -
> > > - bpf_obj_get_info_by_fd(fd, &map_info, &map_info_len);
> > > - return map_info.id;
> > > -}
> > > -
> > > -/* trigger the leader program on a cpu */
> > > -static inline int bperf_trigger_reading(int prog_fd, int cpu)
> > > -{
> > > - DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
> > > - .ctx_in = NULL,
> > > - .ctx_size_in = 0,
> > > - .flags = BPF_F_TEST_RUN_ON_CPU,
> > > - .cpu = cpu,
> > > - .retval = 0,
> > > - );
> > > -
> > > - return bpf_prog_test_run_opts(prog_fd, &opts);
> > > -}
> > > -
> > > #endif /* __PERF_BPF_COUNTER_H */
> > > --
> > > 2.39.0.314.g84b9a713c41-goog
> >
>
> Tested-by: Mike Leach <mike.leach@linaro.org>
>
> > --
> >
> > - Arnaldo
>
>
> --
> Mike Leach
> Principal Engineer, ARM Ltd.
> Manchester Design Centre. UK
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2023-01-06 15:15 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-01-06 14:25 [PATCH v2 1/2] perf build: Properly guard libbpf includes Ian Rogers
2023-01-06 14:25 ` [PATCH v2 2/2] perf build: Fix build error when NO_LIBBPF=1 Ian Rogers
2023-01-06 15:12 ` Mike Leach
2023-01-06 14:55 ` [PATCH v2 1/2] perf build: Properly guard libbpf includes Arnaldo Carvalho de Melo
2023-01-06 15:12 ` Mike Leach
2023-01-06 15:14 ` Ian Rogers
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