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Adrian Hunter 38b65b0891 perf intel-pt: Do not use TSC packets for calculating CPU cycles to TSC 
CBR (core-to-bus ratio) packets provide an indication of CPU frequency. A
more accurate measure can be made by counting the cycles (given by CYC
packets) in between other timing packets (either MTC or TSC). Using TSC
packets has at least 2 issues: 1) timing might have stopped (e.g. mwait) or
2) TSC packets within PSB+ might slip past CYC packets. For now, simply do
not use TSC packets for calculating CPU cycles to TSC. That leaves the case
where 2 MTC packets are used, otherwise falling back to the CBR value.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1495786658-18063-37-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 		2017-06-30 11:50:55 -03:00
..
Documentation perf intel-pt: Update documentation to include new ptwrite and power events 2017-06-30 11:50:54 -03:00
arch x86/insn: perf tools: Add new ptwrite instruction 2017-06-27 11:58:04 -03:00
bench perf tools: Use __maybe_unused consistently 2017-06-19 15:27:06 -03:00
jvmti perf jit: fix typo: "incalid" -> "invalid" 2017-06-27 11:55:06 -03:00
pmu-events perf tools: Use __maybe_unused consistently 2017-06-19 15:27:06 -03:00
python perf python: Add tracepoint example 2016-07-12 16:23:35 -03:00
scripts perf intel-pt: Add example script for power events and PTWRITE 2017-06-30 11:50:53 -03:00
tests perf tools: Kill die() 2017-06-27 11:49:13 -03:00
trace perf tools: Add signal.h to places using its definitions 2017-04-20 13:22:43 -03:00
ui perf annotate: Return arch from symbol__disassemble() and save it in browser 2017-06-19 15:27:09 -03:00
util perf intel-pt: Do not use TSC packets for calculating CPU cycles to TSC 2017-06-30 11:50:55 -03:00
.gitignore perf tools: Ignore generated files pmu-events/{jevents,pmu-events.c} for git 2017-03-13 10:59:36 -03:00
Build perf trace: Beautify statx syscall 'flag' and 'mask' arguments 2017-03-31 14:42:31 -03:00
CREDITS
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MANIFEST tools include: Introduce linux/bug.h, from the kernel sources 2017-04-19 13:01:42 -03:00
Makefile perf build tests: Do parallell builds with 'build-test' 2016-02-04 15:57:00 -03:00
Makefile.config perf unwind: Support for powerpc 2017-06-21 11:35:42 -03:00
Makefile.perf perf tools: Fix build with ARCH=x86_64 2017-06-14 15:44:29 -03:00
builtin-annotate.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
builtin-bench.c perf tools: Remove unused 'prefix' from builtin functions 2017-03-27 11:58:09 -03:00
builtin-buildid-cache.c perf symbols: Accept symbols starting at address 0 2017-05-02 18:23:04 -03:00
builtin-buildid-list.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
builtin-c2c.c perf tools: Replace error() with pr_err() 2017-06-27 11:22:31 -03:00
builtin-config.c perf config: Refactor the code using 'ret' variable in cmd_config() 2017-06-19 22:05:55 -03:00
builtin-data.c perf tools: Remove unused 'prefix' from builtin functions 2017-03-27 11:58:09 -03:00
builtin-diff.c perf config: Do not die when parsing u64 or int config values 2017-06-27 11:44:58 -03:00
builtin-evlist.c perf tools: Remove unused 'prefix' from builtin functions 2017-03-27 11:58:09 -03:00
builtin-ftrace.c perf ftrace: Add -D option for depth filter 2017-06-19 22:05:54 -03:00
builtin-help.c perf tools: Replace error() with pr_err() 2017-06-27 11:22:31 -03:00
builtin-inject.c perf tools: Use just forward declarations for struct thread where possible 2017-04-24 13:43:35 -03:00
builtin-kallsyms.c perf tools: Including missing inttypes.h header 2017-04-19 13:01:46 -03:00
builtin-kmem.c perf tools: Replace error() with pr_err() 2017-06-27 11:22:31 -03:00
builtin-kvm.c perf tools: Remove poll.h and wait.h from util.h 2017-04-24 13:43:34 -03:00
builtin-list.c perf tools: Remove unused 'prefix' from builtin functions 2017-03-27 11:58:09 -03:00
builtin-lock.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
builtin-mem.c perf tools: Use just forward declarations for struct thread where possible 2017-04-24 13:43:35 -03:00
builtin-probe.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2017-05-02 19:09:35 -07:00
builtin-record.c perf tools: Replace error() with pr_err() 2017-06-27 11:22:31 -03:00
builtin-report.c perf config: Do not die when parsing u64 or int config values 2017-06-27 11:44:58 -03:00
builtin-sched.c perf tools: Replace error() with pr_err() 2017-06-27 11:22:31 -03:00
builtin-script.c perf script: Add synthesized Intel PT power and ptwrite events 2017-06-30 11:40:20 -03:00
builtin-stat.c perf tools: Replace error() with pr_err() 2017-06-27 11:22:31 -03:00
builtin-timechart.c perf tools: Use just forward declarations for struct thread where possible 2017-04-24 13:43:35 -03:00
builtin-top.c perf tools: Replace error() with pr_err() 2017-06-27 11:22:31 -03:00
builtin-trace.c perf trace: Add mmap alias for s390 2017-06-01 10:13:21 -03:00
builtin-version.c perf tools: Remove string.h, unistd.h and sys/stat.h from util.h 2017-04-24 13:43:33 -03:00
builtin.h perf tools: Remove stale prototypes from builtin.h 2017-04-24 13:43:33 -03:00
check-headers.sh tools include uapi: Grab copies of stat.h and fcntl.h 2017-03-31 11:26:03 -03:00
command-list.txt perf tools: Missing c2c command in command-list 2017-03-13 10:59:31 -03:00
design.txt
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perf-archive.sh
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perf-completion.sh
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perf-read-vdso.c
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perf-sys.h perf powerpc: Fix build-test failure 2016-09-08 13:44:07 -03:00
perf-with-kcore.sh
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perf.c perf tools: Move event prototypes from util.h to event.h 2017-04-25 15:30:47 -03:00
perf.h perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info 2017-03-14 11:38:23 -03:00