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| author | Andi Kleen <ak@linux.intel.com> | 2017-08-12 02:26:23 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-08-22 18:15:53 +0300 |
| commit | d73bad06851b8d5745c11dd4ab789464f6c71b39 (patch) | |
| tree | 4148380beeb025c81539867a1e7bf137219aa641 /CREDITS | |
| parent | de5077c4e38f2a51f50d28bdd5e4a0f14b3d16ff (diff) | |
| download | linux-d73bad06851b8d5745c11dd4ab789464f6c71b39.tar.xz | |
perf tools: Expression parser enhancements for metrics
Enhance the expression parser for more complex metric formulas.
- Support python style IF ELSE operators
- Add an #SMT_On magic variable for formulas that depend on the SMT
status.
Example: 4 *( CPU_CLK_UNHALTED.THREAD_ANY / 2 ) if #SMT_on else cycles
- Support MIN/MAX operations
Example: min(1 , IDQ.MITE_UOPS / ( UPI * 16 * ( ICACHE.HIT + ICACHE.MISSES ) / 4.0 ) )
This is useful to fix up problems caused by multiplexing.
- Support | & ^ operators
- Minor cleanups and fixes
- Support an \ escape for operators. This allows to specify event names
like c2-residency
- Support @ as an alternative for / to be able to specify pmus without
conflicts with operators (like msr/tsc/ as msr@tsc@)
Example: (cstate_core@c3\\-residency@ / msr@tsc@) * 100
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170811232634.30465-8-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'CREDITS')
0 files changed, 0 insertions, 0 deletions