Commit-ID: 841e3558b2de6d8c53dae4f01c7a81cd53e42e5c Gitweb: http://git.kernel.org/tip/841e3558b2de6d8c53dae4f01c7a81cd53e42e5c Author: He Kuang <[email protected]> AuthorDate: Fri, 6 May 2016 08:59:07 +0000 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Mon, 9 May 2016 13:29:36 -0300
perf callchain: Recording 'dwarf' callchains do not need DWARF unwinding support There is no need to check for DWARF unwinding support when using the 'dwarf' callchain record method, as this will only ask the kernel to collect stack dumps for later DWARF CFI processing, which can be done in another machine, where the support for DWARF unwinding need to be present. Signed-off-by: He Kuang <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andi Kleen <[email protected]> Cc: David Ahern <[email protected]> Cc: Ekaterina Tumanova <[email protected]> Cc: Josh Poimboeuf <[email protected]> Cc: Kan Liang <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Pekka Enberg <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Sukadev Bhattiprolu <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/util/util.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 619ba20..01c9433 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -507,7 +507,6 @@ int parse_callchain_record(const char *arg, struct callchain_param *param) "needed for --call-graph fp\n"); break; -#ifdef HAVE_DWARF_UNWIND_SUPPORT /* Dwarf style */ } else if (!strncmp(name, "dwarf", sizeof("dwarf"))) { const unsigned long default_stack_dump_size = 8192; @@ -523,7 +522,6 @@ int parse_callchain_record(const char *arg, struct callchain_param *param) ret = get_stack_size(tok, &size); param->dump_size = size; } -#endif /* HAVE_DWARF_UNWIND_SUPPORT */ } else if (!strncmp(name, "lbr", sizeof("lbr"))) { if (!strtok_r(NULL, ",", &saveptr)) { param->record_mode = CALLCHAIN_LBR;
