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tools build: Add test for sched_getcpu()

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Instead of trying to go on adding more ifdef conditions, do a feature
test and define HAVE_SCHED_GETCPU_SUPPORT instead, then use it to
provide the prototype. No need to change the stub, as it is already a
__weak symbol.

Cc: Adrian Hunter <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Wang Nan <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Arnaldo Carvalho de Melo 2017-03-02 12:55:49 -03:00
commit 120010cb1e
7 changed files with 24 additions and 9 deletions
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4
tools/perf/Makefile.config
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@ -317,6 +317,10 @@ ifdef NO_DWARF
NO_LIBDW_DWARF_UNWIND := 1
endif
ifeq ($(feature-sched_getcpu), 1)
CFLAGS += -DHAVE_SCHED_GETCPU_SUPPORT
endif
ifndef NO_LIBELF
CFLAGS += -DHAVE_LIBELF_SUPPORT
EXTLIBS += -lelf

6
tools/perf/util/cloexec.h
View file

@ -3,10 +3,4 @@
unsigned long perf_event_open_cloexec_flag(void);
#ifdef __GLIBC_PREREQ
#if !__GLIBC_PREREQ(2, 6) && !defined(__UCLIBC__)
int sched_getcpu(void) __THROW;
#endif
#endif
#endif /* __PERF_CLOEXEC_H */

4
tools/perf/util/util.h
View file

@ -355,8 +355,8 @@ void print_binary(unsigned char *data, size_t len,
size_t bytes_per_line, print_binary_t printer,
void *extra);
#if !defined(__GLIBC__) && !defined(__ANDROID__)
extern int sched_getcpu(void);
#ifndef HAVE_SCHED_GETCPU_SUPPORT
int sched_getcpu(void);
#endif
int is_printable_array(char *p, unsigned int len);