On Wed, 8 Aug 2012 17:57:54 +0800, Feng Tang wrote: > This library defines several class types for perf events which could > help to better analyze the event samples. Currently there are just a > few classes, PerfEvent is the base class for all perf events, PebsEvent > is a HW base Intel x86 PEBS event, and user could add more SW/HW event > classes based on requriements. > > Signed-off-by: Feng Tang <feng.t...@intel.com> > --- > .../Perf-Trace-Util/lib/Perf/Trace/EventClass.py | 95 > ++++++++++++++++++++ > 1 files changed, 95 insertions(+), 0 deletions(-) > create mode 100755 > tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py > > diff --git > a/tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py > b/tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py > new file mode 100755 > index 0000000..12cd773 > --- /dev/null > +++ b/tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py > @@ -0,0 +1,95 @@ > +# EventClass.py > +# > +# This is a libray defining some events typs classes, which could
s/typs/type/ > +# be used by other scripts to analyzing the perf samples. > +# > +# Currently there are just a few classes defined for examples, > +# PerfEvent is the base class for all perf event sample, PebsEvent > +# is a HW base Intel x86 PEBS event, and user could add more SW/HW > +# event classes based on requriements. s/requriements/requirements/ Thanks, Namhyung > + > +import struct > + > +# Event types, user could add more here > +EVTYPE_GENERIC = 0 > +EVTYPE_PEBS = 1 # Basic PEBS event > +EVTYPE_PEBS_LL = 2 # PEBS event with load latency info > +EVTYPE_IBS = 3 > + > +# > +# Currently we don't have good way to tell the event type, but by > +# the size of raw buffer, raw PEBS event with load latency data's > +# size is 176 bytes, while the pure PEBS event's size is 144 bytes. > +# > +def create_event(name, comm, dso, symbol, raw_buf): > + if (len(raw_buf) == 144): > + event = PebsEvent(name, comm, dso, symbol, raw_buf) > + elif (len(raw_buf) == 176): > + event = PebsNHM(name, comm, dso, symbol, raw_buf) > + else: > + event = PerfEvent(name, comm, dso, symbol, raw_buf) > + > + return event > + > +class PerfEvent(object): > + event_num = 0 > + def __init__(self, name, comm, dso, symbol, raw_buf, > ev_type=EVTYPE_GENERIC): > + self.name = name > + self.comm = comm > + self.dso = dso > + self.symbol = symbol > + self.raw_buf = raw_buf > + self.ev_type = ev_type > + PerfEvent.event_num += 1 > + > + def show(self): > + print "PMU event: name=%12s, symbol=%24s, comm=%8s, > dso=%12s" % (self.name, self.symbol, self.comm, self.dso) > + > +# > +# Basic Intel PEBS (Precise Event-based Sampling) event, whose raw buffer > +# contains the context info when that event happened: the EFLAGS and > +# linear IP info, as well as all the registers. > +# > +class PebsEvent(PerfEvent): > + pebs_num = 0 > + def __init__(self, name, comm, dso, symbol, raw_buf, > ev_type=EVTYPE_PEBS): > + tmp_buf=raw_buf[0:80] > + flags, ip, ax, bx, cx, dx, si, di, bp, sp = > struct.unpack('QQQQQQQQQQ', tmp_buf) > + self.flags = flags > + self.ip = ip > + self.ax = ax > + self.bx = bx > + self.cx = cx > + self.dx = dx > + self.si = si > + self.di = di > + self.bp = bp > + self.sp = sp > + > + PerfEvent.__init__(self, name, comm, dso, symbol, raw_buf, > ev_type) > + PebsEvent.pebs_num += 1 > + del tmp_buf > + > +# > +# Intel Nehalem and Westmere support PEBS plus Load Latency info which lie > +# in the four 64 bit words write after the PEBS data: > +# Status: records the IA32_PERF_GLOBAL_STATUS register value > +# DLA: Data Linear Address (EIP) > +# DSE: Data Source Encoding, where the latency happens, hit or miss > +# in L1/L2/L3 or IO operations > +# LAT: the actual latency in cycles > +# > +class PebsNHM(PebsEvent): > + pebs_nhm_num = 0 > + def __init__(self, name, comm, dso, symbol, raw_buf, > ev_type=EVTYPE_PEBS_LL): > + tmp_buf=raw_buf[144:176] > + status, dla, dse, lat = struct.unpack('QQQQ', tmp_buf) > + self.status = status > + self.dla = dla > + self.dse = dse > + self.lat = lat > + > + PebsEvent.__init__(self, name, comm, dso, symbol, raw_buf, > ev_type) > + PebsNHM.pebs_nhm_num += 1 > + del tmp_buf > + -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/