| From | Josh Poimboeuf <> | Subject | [PATCH v4 21/57] perf/x86: check perf_callchain_store() error | Date | Thu, 18 Aug 2016 08:06:01 -0500 |
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Add a check to perf_callchain_kernel() so that it returns early if the callchain entry array is already full.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> --- arch/x86/events/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index 18a1acf..dcaa887 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -2297,7 +2297,8 @@ perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *re return; } - perf_callchain_store(entry, regs->ip); + if (perf_callchain_store(entry, regs->ip)) + return; dump_trace(NULL, regs, NULL, 0, &backtrace_ops, entry); } -- 2.7.4
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