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mirror_ubuntu-kernels/tools/perf/arch/x86/util
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Adrian Hunter 75bcb8776d perf intel-pt: Fix recording PEBS-via-PT with registers 
When recording PEBS-via-PT, the kernel will not accept the intel_pt
event with register sampling e.g.

 # perf record --kcore -c 10000 -e '{intel_pt/branch=0/,branch-loads/aux-output/ppp}' -I -- ls -l
 Error:
 intel_pt/branch=0/: PMU Hardware doesn't support sampling/overflow-interrupts. Try 'perf stat'

Fix by suppressing register sampling on the intel_pt evsel.

Committer notes:

Adrian informed that this is only available from Tremont onwards, so on
older processors the error continues the same as before.

Fixes: 9e64cefe43 ("perf intel-pt: Process options for PEBS event synthesis")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Luwei Kang <luwei.kang@intel.com>
Link: http://lore.kernel.org/lkml/20200630133935.11150-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-06 09:03:39 -03:00
..
archinsn.c perf tools: Move event synthesizing routines to separate header 2019-09-20 09:19:22 -03:00
auxtrace.c tools: Fix off-by 1 relative directory includes 2020-03-06 08:36:46 -03:00
Build perf script: Support insn output for normal samples 2019-03-11 11:56:02 -03:00
dwarf-regs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
event.c tools: Fix off-by 1 relative directory includes 2020-03-06 08:36:46 -03:00
group.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
header.c tools: Fix off-by 1 relative directory includes 2020-03-06 08:36:46 -03:00
intel-bts.c perf evsel: Rename *perf_evsel__*set_sample_*() to *evsel__*set_sample_*() 2020-05-05 16:35:30 -03:00
intel-pt.c perf intel-pt: Fix recording PEBS-via-PT with registers 2020-07-06 09:03:39 -03:00
kvm-stat.c perf evsel: Rename perf_evsel__{str,int}val() and other tracepoint field metehods to to evsel__*() 2020-05-05 16:35:30 -03:00
machine.c tools: Fix off-by 1 relative directory includes 2020-03-06 08:36:46 -03:00
perf_regs.c tools: Fix off-by 1 relative directory includes 2020-03-06 08:36:46 -03:00
pmu.c tools: Fix off-by 1 relative directory includes 2020-03-06 08:36:46 -03:00
tsc.c perf tools: Move event synthesizing routines to separate header 2019-09-20 09:19:22 -03:00
unwind-libdw.c perf libdw: Fix off-by 1 relative directory includes 2020-06-01 12:24:23 -03:00
unwind-libunwind.c perf unwind: Fix libunwind build failure on i386 systems 2019-09-26 21:59:38 +02:00