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authorFrederic Weisbecker <fweisbec@gmail.com>2010-06-24 21:36:19 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2010-06-24 23:35:49 +0200
commitaa59a48596d8358a908bfb458300b5625cd47785 (patch)
tree58ae30e731167f6bb9bf6d6ef6a42003bc0f054c /tools
parentf7809daf64bf119fef70af172db6a0636fa51f92 (diff)
perf: Don't use 4 bytes as a default instruction breakpoint length
4 bytes is fine as a default access for data breakpoints. But instruction breakpoints should take the native pointer length, otherwise we get a -EINVAL in x86-64. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Prasad <prasad@linux.vnet.ibm.com> Cc: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Jason Wessel <jason.wessel@windriver.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/parse-events.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 9bf0f402ca73..4af5bd59cfd1 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -602,8 +602,15 @@ parse_breakpoint_event(const char **strp, struct perf_event_attr *attr)
return EVT_FAILED;
}
- /* We should find a nice way to override the access type */
- attr->bp_len = HW_BREAKPOINT_LEN_4;
+ /*
+ * We should find a nice way to override the access length
+ * Provide some defaults for now
+ */
+ if (attr->bp_type == HW_BREAKPOINT_X)
+ attr->bp_len = sizeof(long);
+ else
+ attr->bp_len = HW_BREAKPOINT_LEN_4;
+
attr->type = PERF_TYPE_BREAKPOINT;
return EVT_HANDLED;