perf diff: Change the default sort order to "dso,symbol"
This is a more intuitive / more meaningful default: $ perf diff | head -8 9.02% +1.00% libc-2.10.1.so [.] _IO_vfprintf_internal 2.91% -1.00% [kernel] [k] __kmalloc 2.85% -1.00% [kernel] [k] ext4_htree_store_dirent 1.99% -1.00% [kernel] [k] _atomic_dec_and_lock 2.44% [kernel] $ Suggested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1260979793-1981-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -18,6 +18,7 @@
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static char const *input_old = "perf.data.old",
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*input_new = "perf.data";
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static char diff__default_sort_order[] = "dso,symbol";
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static int force;
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static bool show_displacement;
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@ -220,6 +221,7 @@ static const struct option options[] = {
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int cmd_diff(int argc, const char **argv, const char *prefix __used)
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{
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sort_order = diff__default_sort_order;
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argc = parse_options(argc, argv, options, diff_usage, 0);
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if (argc) {
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if (argc > 2)
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