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authorIngo Molnar <mingo@kernel.org>2014-03-01 10:13:25 +0100
committerIngo Molnar <mingo@kernel.org>2014-03-01 10:13:25 +0100
commitaf76815a31adc75dd9526230affdd678e65ac59f (patch)
treedfc60fc25146d8dad4b9143c1759283727f4923c
parentb6e53f321ee6f4b237d8cc54fbace3217fa96e05 (diff)
parentb39c2a57a00a841f057a75b41df4c26173288b66 (diff)
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Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent build fixes for certain distro environments, from Arnaldo Carvalho de Melo: * Problem on recent gcc on x86-32 related to strict alias issue for find_first_bit (Jiri Olsa). * OpenSuSE: BFD detection problems related to not explicitely listing all required libraries (Andi Kleen) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r--tools/perf/config/Makefile2
-rw-r--r--tools/perf/config/feature-checks/Makefile2
-rw-r--r--tools/perf/util/include/linux/bitops.h4
3 files changed, 5 insertions, 3 deletions
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index c48d44958172..0331ea2701a3 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -478,7 +478,7 @@ else
endif
ifeq ($(feature-libbfd), 1)
- EXTLIBS += -lbfd
+ EXTLIBS += -lbfd -lz -liberty
endif
ifdef NO_DEMANGLE
diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile
index 12e551346fa6..523b7bc10553 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -121,7 +121,7 @@ test-libpython-version.bin:
$(BUILD) $(FLAGS_PYTHON_EMBED)
test-libbfd.bin:
- $(BUILD) -DPACKAGE='"perf"' -lbfd -ldl
+ $(BUILD) -DPACKAGE='"perf"' -lbfd -lz -liberty -ldl
test-liberty.bin:
$(CC) -o $(OUTPUT)$@ test-libbfd.c -DPACKAGE='"perf"' -lbfd -ldl -liberty
diff --git a/tools/perf/util/include/linux/bitops.h b/tools/perf/util/include/linux/bitops.h
index 45cf10a562bd..dadfa7e54287 100644
--- a/tools/perf/util/include/linux/bitops.h
+++ b/tools/perf/util/include/linux/bitops.h
@@ -87,13 +87,15 @@ static __always_inline unsigned long __ffs(unsigned long word)
return num;
}
+typedef const unsigned long __attribute__((__may_alias__)) long_alias_t;
+
/*
* Find the first set bit in a memory region.
*/
static inline unsigned long
find_first_bit(const unsigned long *addr, unsigned long size)
{
- const unsigned long *p = addr;
+ long_alias_t *p = (long_alias_t *) addr;
unsigned long result = 0;
unsigned long tmp;