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Groups > linux.kernel > #1261423 > unrolled thread

[PATCH] tools/lib/bpf: Fix compiler warning on CentOS 6

Started byNamhyung Kim <namhyung@kernel.org>
First post2015-11-03 12:30 +0100
Last post2015-11-08 08:30 +0100
Articles 3 — 3 participants

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  [PATCH] tools/lib/bpf: Fix compiler warning on CentOS 6 Namhyung Kim <namhyung@kernel.org> - 2015-11-03 12:30 +0100
    Re: [PATCH] tools/lib/bpf: Fix compiler warning on CentOS 6 Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-11-03 16:20 +0100
    [tip:perf/urgent] tools lib bpf: Fix compiler warning on CentOS 6 tip-bot for Namhyung Kim <tipbot@zytor.com> - 2015-11-08 08:30 +0100

#1261423 — [PATCH] tools/lib/bpf: Fix compiler warning on CentOS 6

FromNamhyung Kim <namhyung@kernel.org>
Date2015-11-03 12:30 +0100
Subject[PATCH] tools/lib/bpf: Fix compiler warning on CentOS 6
Message-ID<qqHWO-23s-9@gated-at.bofh.it>
    CC       libbpf.o
  cc1: warnings being treated as errors
  libbpf.c: In function 'bpf_program__title':
  libbpf.c:1037: error: declaration of 'dup' shadows a global declaration
  /usr/include/unistd.h:528: error: shadowed declaration is here
  mv: cannot stat `./.libbpf.o.tmp': No such file or directory
  make[3]: *** [libbpf.o] Error 1
  make[2]: *** [libbpf-in.o] Error 2
  make[1]: *** [/linux/tools/lib/bpf/libbpf.a] Error 2
  make[1]: *** Waiting for unfinished jobs....

Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/lib/bpf/libbpf.c | 4 ++--
 tools/lib/bpf/libbpf.h | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 4252fc22f78f..9f3c8cf9249b 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1034,12 +1034,12 @@ int bpf_program__get_private(struct bpf_program *prog, void **ppriv)
 	return 0;
 }
 
-const char *bpf_program__title(struct bpf_program *prog, bool dup)
+const char *bpf_program__title(struct bpf_program *prog, bool needs_copy)
 {
 	const char *title;
 
 	title = prog->section_name;
-	if (dup) {
+	if (needs_copy) {
 		title = strdup(title);
 		if (!title) {
 			pr_warning("failed to strdup program title\n");
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index f16170c95ffd..bc80af03c6f4 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -63,7 +63,7 @@ int bpf_program__set_private(struct bpf_program *prog, void *priv,
 int bpf_program__get_private(struct bpf_program *prog,
 			     void **ppriv);
 
-const char *bpf_program__title(struct bpf_program *prog, bool dup);
+const char *bpf_program__title(struct bpf_program *prog, bool needs_copy);
 
 int bpf_program__fd(struct bpf_program *prog);
 
-- 
2.6.2

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#1261575

FromArnaldo Carvalho de Melo <acme@kernel.org>
Date2015-11-03 16:20 +0100
Message-ID<qqLxo-4or-9@gated-at.bofh.it>
In reply to#1261423
Em Tue, Nov 03, 2015 at 08:21:05PM +0900, Namhyung Kim escreveu:
>     CC       libbpf.o
>   cc1: warnings being treated as errors
>   libbpf.c: In function 'bpf_program__title':
>   libbpf.c:1037: error: declaration of 'dup' shadows a global declaration
>   /usr/include/unistd.h:528: error: shadowed declaration is here
>   mv: cannot stat `./.libbpf.o.tmp': No such file or directory
>   make[3]: *** [libbpf.o] Error 1
>   make[2]: *** [libbpf-in.o] Error 2
>   make[1]: *** [/linux/tools/lib/bpf/libbpf.a] Error 2
>   make[1]: *** Waiting for unfinished jobs....

Thanks, applied.

- Arnaldo
 
> Cc: Wang Nan <wangnan0@huawei.com>
> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
> ---
>  tools/lib/bpf/libbpf.c | 4 ++--
>  tools/lib/bpf/libbpf.h | 2 +-
>  2 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
> index 4252fc22f78f..9f3c8cf9249b 100644
> --- a/tools/lib/bpf/libbpf.c
> +++ b/tools/lib/bpf/libbpf.c
> @@ -1034,12 +1034,12 @@ int bpf_program__get_private(struct bpf_program *prog, void **ppriv)
>  	return 0;
>  }
>  
> -const char *bpf_program__title(struct bpf_program *prog, bool dup)
> +const char *bpf_program__title(struct bpf_program *prog, bool needs_copy)
>  {
>  	const char *title;
>  
>  	title = prog->section_name;
> -	if (dup) {
> +	if (needs_copy) {
>  		title = strdup(title);
>  		if (!title) {
>  			pr_warning("failed to strdup program title\n");
> diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
> index f16170c95ffd..bc80af03c6f4 100644
> --- a/tools/lib/bpf/libbpf.h
> +++ b/tools/lib/bpf/libbpf.h
> @@ -63,7 +63,7 @@ int bpf_program__set_private(struct bpf_program *prog, void *priv,
>  int bpf_program__get_private(struct bpf_program *prog,
>  			     void **ppriv);
>  
> -const char *bpf_program__title(struct bpf_program *prog, bool dup);
> +const char *bpf_program__title(struct bpf_program *prog, bool needs_copy);
>  
>  int bpf_program__fd(struct bpf_program *prog);
>  
> -- 
> 2.6.2
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#1265008 — [tip:perf/urgent] tools lib bpf: Fix compiler warning on CentOS 6

Fromtip-bot for Namhyung Kim <tipbot@zytor.com>
Date2015-11-08 08:30 +0100
Subject[tip:perf/urgent] tools lib bpf: Fix compiler warning on CentOS 6
Message-ID<qssAi-5wU-11@gated-at.bofh.it>
In reply to#1261423
Commit-ID:  715f8db9102f1ab40ea4a87bedfe86399323698f
Gitweb:     http://git.kernel.org/tip/715f8db9102f1ab40ea4a87bedfe86399323698f
Author:     Namhyung Kim <namhyung@kernel.org>
AuthorDate: Tue, 3 Nov 2015 20:21:05 +0900
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 3 Nov 2015 12:13:31 -0300

tools lib bpf: Fix compiler warning on CentOS 6

    CC       libbpf.o
  cc1: warnings being treated as errors
  libbpf.c: In function 'bpf_program__title':
  libbpf.c:1037: error: declaration of 'dup' shadows a global declaration
  /usr/include/unistd.h:528: error: shadowed declaration is here
  mv: cannot stat `./.libbpf.o.tmp': No such file or directory
  make[3]: *** [libbpf.o] Error 1
  make[2]: *** [libbpf-in.o] Error 2
  make[1]: *** [/linux/tools/lib/bpf/libbpf.a] Error 2
  make[1]: *** Waiting for unfinished jobs....

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1446549665-2342-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/lib/bpf/libbpf.c | 4 ++--
 tools/lib/bpf/libbpf.h | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 4252fc2..9f3c8cf 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1034,12 +1034,12 @@ int bpf_program__get_private(struct bpf_program *prog, void **ppriv)
 	return 0;
 }
 
-const char *bpf_program__title(struct bpf_program *prog, bool dup)
+const char *bpf_program__title(struct bpf_program *prog, bool needs_copy)
 {
 	const char *title;
 
 	title = prog->section_name;
-	if (dup) {
+	if (needs_copy) {
 		title = strdup(title);
 		if (!title) {
 			pr_warning("failed to strdup program title\n");
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index f16170c..bc80af0 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -63,7 +63,7 @@ int bpf_program__set_private(struct bpf_program *prog, void *priv,
 int bpf_program__get_private(struct bpf_program *prog,
 			     void **ppriv);
 
-const char *bpf_program__title(struct bpf_program *prog, bool dup);
+const char *bpf_program__title(struct bpf_program *prog, bool needs_copy);
 
 int bpf_program__fd(struct bpf_program *prog);
 
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