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perf c2c: Keep struct hist_entry at the end of struct c2c_hist_entry
Exactly as the comment just before 'struct c2c_hist_entry" says, i.e.
the last entry in struct hist_entry is a zero length array, that when
allocating space for hist_entry gets extra space if callchains are in
use, which, if hist_entry is not at the end of c2c_hist_entry, the
members after it gets corrupted when callchains get added to the rb
trees collecting them, etc.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Reported-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jin Yao <yao.jin@linux.intel.com>
Fixes: 7f834c2e84
("perf c2c report: Display node for cacheline address")
Link: http://lkml.kernel.org/n/tip-bh0ke4fh2ygpj3yowna7o1di@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -56,16 +56,16 @@ struct c2c_hist_entry {
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struct compute_stats cstats;
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unsigned long paddr;
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unsigned long paddr_cnt;
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bool paddr_zero;
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char *nodestr;
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/*
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* must be at the end,
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* because of its callchain dynamic entry
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*/
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struct hist_entry he;
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unsigned long paddr;
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unsigned long paddr_cnt;
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bool paddr_zero;
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char *nodestr;
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};
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static char const *coalesce_default = "pid,iaddr";
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