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| Filename | Latest commit message | Latest commit date |
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53172f9057
The perf kvm still use the legacy interface.
Switch to the new perf_mmap__read_event() interface for perf kvm.
No functional change.
Committer notes:
Tested before and after running:
# perf kvm stat record
On a machine with a kvm guest, then used:
# perf kvm stat report
Before/after results match and look like:
# perf kvm stat record -a sleep 5
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 2.132 MB perf.data.guest (1828 samples) ]
# perf kvm stat report
Analyze events for all VMs, all VCPUs:
VM-EXIT Samples Samples% Time% Min Time Max Time Avg time
IO_INSTRUCTION 258 40.06% 0.08% 3.51us 122.54us 14.87us (+- 6.76%)
MSR_WRITE 178 27.64% 0.01% 0.47us 6.34us 2.18us (+- 4.80%)
EPT_MISCONFIG 148 22.98% 0.03% 3.76us 65.60us 11.22us (+- 8.14%)
HLT 47 7.30% 99.88% 181.69us 249988.06us 102061.36us (+-13.49%)
PAUSE_INSTRUCTION 5 0.78% 0.00% 0.38us 0.79us 0.47us (+-17.05%)
MSR_READ 4 0.62% 0.00% 1.14us 3.33us 2.67us (+-19.35%)
EXTERNAL_INTERRUPT 2 0.31% 0.00% 2.15us 2.17us 2.16us (+- 0.30%)
PENDING_INTERRUPT 1 0.16% 0.00% 2.56us 2.56us 2.56us (+- 0.00%)
PREEMPTION_TIMER 1 0.16% 0.00% 3.21us 3.21us 3.21us (+- 0.00%)
Total Samples:644, Total events handled time:4802790.72us.
#
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1519945751-37786-1-git-send-email-kan.liang@linux.intel.com
[ Changed bool parameters from 0 to 'false', as per Jiri comment ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.