forked from luck/tmp_suning_uos_patched
efad14150a
The default input file for perf report is not handled the same way as perf record does it for its output file. This leads to unexpected behavior of perf report, etc. E.g.: # perf record -a -e cpu-cycles sleep 2 | perf report | cat failed to open perf.data: No such file or directory (try 'perf record' first) While perf record writes to a fifo, perf report expects perf.data to be read. This patch changes this to accept fifos as input file. Applies to the following commands: perf annotate perf buildid-list perf evlist perf kmem perf lock perf report perf sched perf script perf timechart Also fixes char const* -> const char* type declaration for filename strings. v2: * Prevent potential null pointer access to input_name in builtin-report.c. Needed due to removal of patch "perf report: Setup browser if stdout is a pipe" Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1323248577-11268-5-git-send-email-robert.richter@amd.com Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
48 lines
793 B
Plaintext
48 lines
793 B
Plaintext
perf-kmem(1)
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============
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NAME
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----
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perf-kmem - Tool to trace/measure kernel memory(slab) properties
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SYNOPSIS
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--------
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[verse]
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'perf kmem' {record|stat} [<options>]
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DESCRIPTION
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-----------
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There are two variants of perf kmem:
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'perf kmem record <command>' to record the kmem events
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of an arbitrary workload.
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'perf kmem stat' to report kernel memory statistics.
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OPTIONS
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-------
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-i <file>::
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--input=<file>::
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Select the input file (default: perf.data unless stdin is a fifo)
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--caller::
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Show per-callsite statistics
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--alloc::
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Show per-allocation statistics
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-s <key[,key2...]>::
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--sort=<key[,key2...]>::
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Sort the output (default: frag,hit,bytes)
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-l <num>::
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--line=<num>::
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Print n lines only
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--raw-ip::
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Print raw ip instead of symbol
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SEE ALSO
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--------
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linkperf:perf-record[1]
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