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perf record: Fix branch_stack type in perf_record_opts 

The attr.branch_sample_type field is defined as u64 by the API.  As
such, we need to ensure the variable holding the value of the branch
stack filters is also u64 otherwise we may lose bits in the future.

Note also that the bogus definition of the field in perf_record_opts
caused problems on big-endian PPC systems.  Thanks to Anshuman Khandual
for tracking the problem on PPC.

Reported-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120525211344.GA7729@quad
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Stephane Eranian 2012-05-25 23:13:44 +02:00 committed by Arnaldo Carvalho de Melo
parent c410431cef
commit a00dc319e9
1 changed files with 1 additions and 1 deletions
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2
tools/perf/perf.h
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@ -227,7 +227,7 @@ struct perf_record_opts {
unsigned int freq;
unsigned int mmap_pages;
unsigned int user_freq;
int branch_stack;
u64 branch_stack;
u64 default_interval;
u64 user_interval;
};