This series allows perf to run in batch mode with stdin closed. This is arguably a bug fix for code that runs with --stdio option and does not check for EOF return code from getc().
This series makes the following work as expected: $ perf top --stdio < /dev/null $ perf kvm top --stdio < /dev/null Patches: 01: perf top: Allow running without stdin Make "perf top --stdio" handle EOF from stdin correctly. There is one getc() that does not handle EOF explicitly, since its return value is checked against a list of known characters, and the main loop in display_thread() will handle the EOF on the next iteration. 02: perf kvm: Allow running without stdin Make "perf kvm --stdio" handle EOF from stdin correctly. 03: perf kvm: Use evlist layer api when possible This is a simple fix for a needless layering violation. Igor Lubashev (3): perf top: Allow running without stdin perf kvm: Allow running without stdin perf kvm: Use evlist layer api when possible tools/perf/builtin-kvm.c | 35 +++++++++++++++++++++-------------- tools/perf/builtin-top.c | 10 ++++++++-- 2 files changed, 29 insertions(+), 16 deletions(-) -- 2.7.4