<feed xmlns='http://www.w3.org/2005/Atom'>
<title>kernel/git/next/linux-next.git/tools/perf/python, branch master</title>
<subtitle>The linux-next integration testing tree</subtitle>
<id>https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/atom?h=master</id>
<link rel='self' href='https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/atom?h=master'/>
<link rel='alternate' type='text/html' href='https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/'/>
<updated>2026-06-30T17:17:19+00:00</updated>
<entry>
<title>perf python: Add LiveSession helper</title>
<updated>2026-06-30T17:17:19+00:00</updated>
<author>
<name>Ian Rogers</name>
<email>irogers@google.com</email>
</author>
<published>2026-06-16T01:15:43+00:00</published>
<link rel='alternate' type='text/html' href='https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=270e3f076b509c24d8cf69dde11db12d64706113'/>
<id>urn:sha1:270e3f076b509c24d8cf69dde11db12d64706113</id>
<content type='text'>
Add LiveSession class in tools/perf/python/perf_live.py to support
live event collection using perf.evlist and perf.parse_events,
avoiding the need to fork a separate perf record process.

Signed-off-by: Ian Rogers &lt;irogers@google.com&gt;
Assisted-by: Gemini:gemini-3.1-pro-preview
Cc: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Cc: Alice Rogers &lt;alice.mei.rogers@gmail.com&gt;
Cc: Dapeng Mi &lt;dapeng1.mi@linux.intel.com&gt;
Cc: Ingo Molnar &lt;mingo@redhat.com&gt;
Cc: James Clark &lt;james.clark@linaro.org&gt;
Cc: Leo Yan &lt;leo.yan@linux.dev&gt;
Cc: Namhyung Kim &lt;namhyung@kernel.org&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Thomas Richter &lt;tmricht@linux.ibm.com&gt;
Signed-off-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Signed-off-by: Namhyung Kim &lt;namhyung@kernel.org&gt;
</content>
</entry>
<entry>
<title>perf python: Add perf.pyi stubs file</title>
<updated>2026-06-30T17:17:18+00:00</updated>
<author>
<name>Ian Rogers</name>
<email>irogers@google.com</email>
</author>
<published>2026-06-16T01:15:42+00:00</published>
<link rel='alternate' type='text/html' href='https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=fed8332b0e0ba9dec1729f0422f0b0d96f7893f2'/>
<id>urn:sha1:fed8332b0e0ba9dec1729f0422f0b0d96f7893f2</id>
<content type='text'>
Add Python type stubs for the perf module to improve IDE support and
static analysis.  Includes docstrings for classes, methods, and
constants derived from C source and JSON definitions.

Assisted-by: Gemini:gemini-3.1-pro-preview
Signed-off-by: Ian Rogers &lt;irogers@google.com&gt;
Cc: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Cc: Alice Rogers &lt;alice.mei.rogers@gmail.com&gt;
Cc: Dapeng Mi &lt;dapeng1.mi@linux.intel.com&gt;
Cc: Ingo Molnar &lt;mingo@redhat.com&gt;
Cc: James Clark &lt;james.clark@linaro.org&gt;
Cc: Leo Yan &lt;leo.yan@linux.dev&gt;
Cc: Namhyung Kim &lt;namhyung@kernel.org&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Thomas Richter &lt;tmricht@linux.ibm.com&gt;
Signed-off-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Signed-off-by: Namhyung Kim &lt;namhyung@kernel.org&gt;
</content>
</entry>
<entry>
<title>perf ilist: Be tolerant of reading a metric on the wrong CPU</title>
<updated>2025-12-03T00:12:49+00:00</updated>
<author>
<name>Ian Rogers</name>
<email>irogers@google.com</email>
</author>
<published>2025-12-02T17:49:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=4b11c983f453689ac9d51d6528891ab4beb7393e'/>
<id>urn:sha1:4b11c983f453689ac9d51d6528891ab4beb7393e</id>
<content type='text'>
This happens on hybrid machine metrics. Be tolerant and don't cause
the ilist application to crash with an exception.

Signed-off-by: Ian Rogers &lt;irogers@google.com&gt;
Tested-by: Thomas Falcon &lt;thomas.falcon@intel.com&gt;
Signed-off-by: Namhyung Kim &lt;namhyung@kernel.org&gt;
</content>
</entry>
<entry>
<title>perf ilist: Add PMU information to metrics</title>
<updated>2025-10-19T02:59:44+00:00</updated>
<author>
<name>Ian Rogers</name>
<email>irogers@google.com</email>
</author>
<published>2025-10-16T22:22:28+00:00</published>
<link rel='alternate' type='text/html' href='https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=98f3e85c475e6a118432671c210167c6176d6fcc'/>
<id>urn:sha1:98f3e85c475e6a118432671c210167c6176d6fcc</id>
<content type='text'>
Duplicate metrics may exist on hybrid platforms, with the metric's PMU
being used to select the metric to use. Incorporate the metric PMU
into the ilist display and support opening it just for a given PMU.

Before:
```
 ⭘                                    Interactive Perf List
    ├── ▼ TopdownL1                               tma_backend_bound
    │   ├── tma_backend_bound                     Counts the total number of issue slots that were
    │   ├── ▶ tma_backend_bound_group             not consumed by the backend due to backend stalls
    │   ├── tma_backend_bound                     Counts the total number of issue slots that were
    │   ├── ▶ tma_backend_bound_group             not consumed by the backend due to backend stalls.
    │   ├── tma_bad_speculation                   Note that uops must be available for consumption
    │   ├── ▶ tma_bad_speculation_group           in order for this event to count. If a uop is not
    │   ├── tma_bad_speculation                   available (IQ is empty), this event will not count
    │   ├── ▶ tma_bad_speculation_group           cpu_atom@TOPDOWN_BE_BOUND.ALL@ / (5 *
    │   ├── tma_frontend_bound                    cpu_atom@CPU_CLK_UNHALTED.CORE@)
    │   ├── ▶ tma_frontend_bound_group            tma_backend_bound &gt; 0.1
    │   ├── tma_frontend_bound                  ▆▆
    │   ├── ▶ tma_frontend_bound_group
    │   ├── tma_retiring
    │   ├── ▶ tma_retiring_group
    │   ├── tma_retiring
    │   └── ▶ tma_retiring_group
    ├── ▶ TopdownL2
total▄▄▅▅▆▅▅▂▁▁▁▁▂▃▂▂▃▄▄▇▇█▆▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▅▅▅▄▆▆▆▅▅▅▅▅▅▇▇▇▇▆▅▆▆▆▆▅▅▅▄▃▃▃▃▃▃▃▃▃▃▄▄▄▅▅▅▅▅▆▆▆▆▆▆
cpu0▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇
cpu1▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▃▃▃▃▃▃▃▃▄▄▄▄▄▄▄▄▄▄▅▅▅▅▅▅▅▅▅▅▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇
cpu2▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
cpu3▁▁▁▁▁▁▁▁▁▄▄▄▄▄▄▄▄▄▄█████▆▆▆▆▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅
cpu4████▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂
cpu5▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▇▇▇▇▇▇▇▇▇▇▆▆
cpu6▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
cpu7▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▃▃▃▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▆▆▆▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇
cpu8▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▃▃▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▅▅▅▅▅▆▆▆▆▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇
cpu9▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂█████▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅
cpu10▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇
cpu11▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█████▁▁▁▁▁▁▁▁▁
cpu12▁▁▁▁▁▁▁▁▁▁▁▁▁▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇
cpu13▁▁▁▁▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇
cpu14▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█████▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
cpu15▁▁▁▁▁▁▁▁▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇
cpu16▃▃▃▃▃▃▃▃▃▄▄▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▄▄▃▃▃▃▃▃▃▃▄▄▄▄▄▄▁▁▃▃▃▃▃▃▃▃▃▃▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇
cpu17▁▁▁▁▁▄▄▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▂▂▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▄▄▄▄▃▃▃▃▂▂▂▂▄▄▄▄▄▄▆▆▆▆▆▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇
 s Search  n Next  p Previous  c Collapse  ^q Quit                                      ▏^p palette
```

After:
```
 ⭘                                    Interactive Perf List
    ├── ▼ TopdownL1                               tma_backend_bound
    │   ├── tma_backend_bound (cpu_atom)          Counts the total number of issue slots that were
    │   ├── ▼ tma_backend_bound_group (cpu_atom)  not consumed by the backend due to backend stalls
    │   │   ├── tma_core_bound (cpu_atom)         Counts the total number of issue slots that were
    │   │   ├── ▶ tma_core_bound_group (cpu_atom  not consumed by the backend due to backend stalls.
    │   │   ├── tma_resource_bound (cpu_atom)     Note that uops must be available for consumption
    │   │   └── ▶ tma_resource_bound_group (cpu_  in order for this event to count. If a uop is not
    │   ├── tma_backend_bound (cpu_core)          available (IQ is empty), this event will not count
    │   ├── ▶ tma_backend_bound_group (cpu_core)  cpu_atom@TOPDOWN_BE_BOUND.ALL@ / (5 *
    │   ├── tma_bad_speculation (cpu_atom)        cpu_atom@CPU_CLK_UNHALTED.CORE@)
    │   ├── ▶ tma_bad_speculation_group (cpu_ato▆▆tma_backend_bound &gt; 0.1
    │   ├── tma_bad_speculation (cpu_core)
    │   ├── ▶ tma_bad_speculation_group (cpu_cor▃▃
    │   ├── tma_frontend_bound (cpu_atom)
    │   ├── ▶ tma_frontend_bound_group (cpu_atom
    │   ├── tma_frontend_bound (cpu_core)
    │   ├── ▶ tma_frontend_bound_group (cpu_core
                                           ▌
total▁▁▁▁▂▂▂▂▂▂▂▂▂▃▃▃▃▃▃▃▃▃▃▂▂▂▂▃▃▃▄▄▄▄▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▅▅▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▇▆▇▇
cpu16▇▇▇▇▇▇▇▇▇▇▇▆▆▁▁▁▁▁▁▁▁▁▁▁▁▂▂▄▄▅▅▅▅▅▅▆▆▆▆▆▆▆▆▇▇▇▇▆▆▆▆▆▆▆▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▆▆▆▄▄▄▄▃▃▄▄▄▄▇▇▇▇▇▇▇▇▇▇
cpu17█▇▇▇▇▇▇▇▇▆▆▆▆▆▆▅▅▅▅▃▃▃▃▂▂▁▁▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▅▅▄▄▂▂▇▇▇▇▆▆▅▅▆▆
cpu18▇▇▇▇▇██▇▇▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▃▃▃▃▃▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▄▄▄▄▄▄▅▅▅▅▅▅▅▅
cpu19▇▃▃▄▄▄▄▄▄▄▄▄▄▅▅▅▅▅▅▅▅▁▁▂▂▃▃▃▃▅▅▆▆▆▆▆▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇██▇▇▇▇▇▇▆▆▅▅▅▅▆▆▄▄▄▄▅▅
cpu20▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▄▄▄▄▅▅▅▅▅▅▆▆▇▇
cpu21▇▇▇▇▇▇▇██▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▅▅▄▄▂▂▂▂▂▂▁▁▁▁
cpu22█▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▂▂▁▁▁▁▂▂▂▂▂▂▂▂
cpu23▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▃▃▄▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▇▇▇▇▆▆██▇▇▇▇▇▇
cpu24▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▃▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▅▅▇▇▆▆▆▆▆▆▇▇▇▇
cpu25▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▆▆▆▆▇▇▇▇▇▇██
cpu26▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▃▃▄▄▇▇▇▇▇▇▇▇▇▇██▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▆▆▆▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▆▂▂▁▁▁▁▂▂▂▂▂▂▂▂
cpu27▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▄▄▄▄▅▅▅▅▅▅▇▇
total 7.4923074548462605
cpu16 0.2961618003253457
cpu17 0.3065719718925585
cpu18 0.27800656881051855
cpu19 0.28564742078353406
cpu20 0.2764790653117084
 s Search  n Next  p Previous  c Collapse  ^q Quit                                      ▏^p palette
```

Signed-off-by: Ian Rogers &lt;irogers@google.com&gt;
Signed-off-by: Namhyung Kim &lt;namhyung@kernel.org&gt;
</content>
</entry>
<entry>
<title>perf ilist: Don't display deprecated events</title>
<updated>2025-10-19T02:59:43+00:00</updated>
<author>
<name>Ian Rogers</name>
<email>irogers@google.com</email>
</author>
<published>2025-10-16T22:22:26+00:00</published>
<link rel='alternate' type='text/html' href='https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=a3ef39eb975d4ba1bd1a29b7dcc4e76d6745b305'/>
<id>urn:sha1:a3ef39eb975d4ba1bd1a29b7dcc4e76d6745b305</id>
<content type='text'>
Unsupported legacy events are flagged as deprecated. Don't display
these events in ilist as they won't open and there are over 1,000
legacy cache events.

Signed-off-by: Ian Rogers &lt;irogers@google.com&gt;
Signed-off-by: Namhyung Kim &lt;namhyung@kernel.org&gt;
</content>
</entry>
<entry>
<title>perf ilist: Add support for metrics</title>
<updated>2025-09-03T15:34:54+00:00</updated>
<author>
<name>Ian Rogers</name>
<email>irogers@google.com</email>
</author>
<published>2025-08-19T01:39:40+00:00</published>
<link rel='alternate' type='text/html' href='https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=a3f4104daa9f4399c295f1269d54491baf60f9be'/>
<id>urn:sha1:a3f4104daa9f4399c295f1269d54491baf60f9be</id>
<content type='text'>
Change tree nodes to having a value of either Metric or PmuEvent,
these values have the ability to match searches, be parsed to create
evlists and to give a value per CPU and per thread to display.

Use perf.metrics to generate a tree of metrics. Most metrics are placed
under their metric group, if the metric group name ends with '_group'
then the metric group is placed next to the associated metric.

Reviewed-by: Howard Chu &lt;howardchu95@gmail.com&gt;
Signed-off-by: Ian Rogers &lt;irogers@google.com&gt;
Tested-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Cc: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Cc: Alexander Shishkin &lt;alexander.shishkin@linux.intel.com&gt;
Cc: Andi Kleen &lt;ak@linux.intel.com&gt;
Cc: Chun-Tse Shao &lt;ctshao@google.com&gt;
Cc: Collin Funk &lt;collin.funk1@gmail.com&gt;
Cc: Dr. David Alan Gilbert &lt;linux@treblig.org&gt;
Cc: Gautam Menghani &lt;gautam@linux.ibm.com&gt;
Cc: Ingo Molnar &lt;mingo@redhat.com&gt;
Cc: James Clark &lt;james.clark@linaro.org&gt;
Cc: Jiri Olsa &lt;jolsa@kernel.org&gt;
Cc: Kan Liang &lt;kan.liang@linux.intel.com&gt;
Cc: Mark Rutland &lt;mark.rutland@arm.com&gt;
Cc: Masami Hiramatsu &lt;mhiramat@kernel.org&gt;
Cc: Namhyung Kim &lt;namhyung@kernel.org&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Thomas Falcon &lt;thomas.falcon@intel.com&gt;
Cc: Thomas Richter &lt;tmricht@linux.ibm.com&gt;
Cc: Tiezhu Yang &lt;yangtiezhu@loongson.cn&gt;
Cc: Weilin Wang &lt;weilin.wang@intel.com&gt;
Cc: Xu Yang &lt;xu.yang_2@nxp.com&gt;
Link: https://lore.kernel.org/r/20250819013941.209033-11-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
</content>
</entry>
<entry>
<title>perf ilist: Add new python ilist command</title>
<updated>2025-09-03T15:34:54+00:00</updated>
<author>
<name>Ian Rogers</name>
<email>irogers@google.com</email>
</author>
<published>2025-08-19T01:39:35+00:00</published>
<link rel='alternate' type='text/html' href='https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=83e5b8f9bf2edfa1aac0d09d994792da594fec56'/>
<id>urn:sha1:83e5b8f9bf2edfa1aac0d09d994792da594fec56</id>
<content type='text'>
The perf ilist command is a textual app [1] similar to perf list. In
the top-left pane a tree of PMUs is displayed. Selecting a PMU expands
the events within it. Selecting an event displays the `perf list`
style event information in the top-right pane.

When an event is selected it is opened and the counters on each CPU
the event is for are periodically read. The bottom of the screen
contains a scrollable set of sparklines showing the events in total
and on each CPU. Scrolling below the sparklines shows the same data as
raw counts. The sparklines are small graphs where the height of the
bar is in relation to maximum of the other counts in the graph.

By default the counts are read with an interval of 0.1 seconds (10
times per second). A -I/--interval command line option allows the
interval to be changed. The oldest read counts are dropped when the
counts fill the line causing the sparkline to move from right to left.

A search box can be pulled up with the 's' key. 'n' and 'p' iterate
through the search results. As some PMUs have hundreds of events a 'c'
key will collapse the events in the current PMU to make navigating the
PMUs easier.

[1] https://textual.textualize.io/

Committer testing:

This needs a bit more polishing, to test it I had to go thru some hops:

  $ python ilist
  python: can't open file '/home/acme/git/perf-tools-next/ilist': [Errno 2] No such file or directory
  $
  $ python tools/perf/python/ilist.py
  Traceback (most recent call last):
    File "/home/acme/git/perf-tools-next/tools/perf/python/ilist.py", line 8, in &lt;module&gt;
      from textual import on
  ModuleNotFoundError: No module named 'textual'
  $

  $ sudo dnf install textual
  Updating and loading repositories:
  Repositories loaded.
  Failed to resolve the transaction:
  No match for argument: textual
  You can try to add to command line:
    --skip-unavailable to skip unavailable packages
  $

After some searching I installed the 'python3-textual' and it starts,
allowing traversing the various pmus and events, see descriptions on the
upper right side and a view of the events on the lower half of the
screen.

Interesting for quickly iterating thru the available events.

Reviewed-by: Howard Chu &lt;howardchu95@gmail.com&gt;
Signed-off-by: Ian Rogers &lt;irogers@google.com&gt;
Tested-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Cc: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Cc: Alexander Shishkin &lt;alexander.shishkin@linux.intel.com&gt;
Cc: Andi Kleen &lt;ak@linux.intel.com&gt;
Cc: Chun-Tse Shao &lt;ctshao@google.com&gt;
Cc: Collin Funk &lt;collin.funk1@gmail.com&gt;
Cc: Dr. David Alan Gilbert &lt;linux@treblig.org&gt;
Cc: Gautam Menghani &lt;gautam@linux.ibm.com&gt;
Cc: Ingo Molnar &lt;mingo@redhat.com&gt;
Cc: James Clark &lt;james.clark@linaro.org&gt;
Cc: Jiri Olsa &lt;jolsa@kernel.org&gt;
Cc: Kan Liang &lt;kan.liang@linux.intel.com&gt;
Cc: Mark Rutland &lt;mark.rutland@arm.com&gt;
Cc: Masami Hiramatsu &lt;mhiramat@kernel.org&gt;
Cc: Namhyung Kim &lt;namhyung@kernel.org&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Thomas Falcon &lt;thomas.falcon@intel.com&gt;
Cc: Thomas Richter &lt;tmricht@linux.ibm.com&gt;
Cc: Tiezhu Yang &lt;yangtiezhu@loongson.cn&gt;
Cc: Weilin Wang &lt;weilin.wang@intel.com&gt;
Cc: Xu Yang &lt;xu.yang_2@nxp.com&gt;
Link: https://lore.kernel.org/r/20250819013941.209033-6-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
</content>
</entry>
<entry>
<title>perf python: Add counting.py as example for counting perf events</title>
<updated>2025-05-23T01:24:58+00:00</updated>
<author>
<name>Gautam Menghani</name>
<email>gautam@linux.ibm.com</email>
</author>
<published>2025-05-19T19:51:44+00:00</published>
<link rel='alternate' type='text/html' href='https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=59df607bf8b482588fae63fb3e1d666ed866f491'/>
<id>urn:sha1:59df607bf8b482588fae63fb3e1d666ed866f491</id>
<content type='text'>
Add counting.py - a python version of counting.c to demonstrate
measuring and reading of counts for given perf events.

Committer testing:

Build perf and make the generated python binding somewhere you can point
to to avoid using the one in the distro python3-perf (fedora, may be
different in other distros):

  $ make -k O=/tmp/build/$(basename $PWD)/ -C tools/perf install-bin

Copy /tmp/build/perf-tools-next/python/perf.cpython-313-x86_64-linux-gnu.so to
somewhere outside this toolbox container and then use it with root:

  # export PYTHONPATH=/root/python/
  # ls -la /root/python/
  total 10640
  drwxr-xr-x. 1 root root       72 May 21 11:40 .
  dr-xr-x---. 1 root root      574 May 21 11:40 ..
  -rwxr-xr-x. 1 acme acme 10894360 May 21 11:40 perf.cpython-313-x86_64-linux-gnu.so
  # tools/perf/python/counting.py | head -5
  For evsel(software/cpu-clock/) val: 2930946 enable: 2932479 run: 2932479
  For evsel(software/cpu-clock/) val: 2924975 enable: 2926267 run: 2926267
  For evsel(software/cpu-clock/) val: 2921017 enable: 2922430 run: 2922430
  For evsel(software/cpu-clock/) val: 2914966 enable: 2916549 run: 2916549
  For evsel(software/cpu-clock/) val: 2910027 enable: 2911589 run: 2911589
  #

Signed-off-by: Gautam Menghani &lt;gautam@linux.ibm.com&gt;
Tested-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Cc: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Cc: Alexander Shishkin &lt;alexander.shishkin@linux.intel.com&gt;
Cc: Howard Chu &lt;howardchu95@gmail.com&gt;
Cc: Ingo Molnar &lt;mingo@redhat.com&gt;
Cc: Jiri Olsa &lt;jolsa@kernel.org&gt;
Cc: Kan Liang &lt;kan.liang@linux.intel.com&gt;
Cc: Madhavan Srinivasan &lt;maddy@linux.ibm.com&gt;
Cc: Mark Rutland &lt;mark.rutland@arm.com&gt;
Cc: Namhyung Kim &lt;namhyung@kernel.org&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
[ make the API take a CPU and thread then compute from these the appropriate indices. ]
Signed-off-by: Ian Rogers &lt;irogers@google.com&gt;
Link: https://lore.kernel.org/linux-perf-users/CAP-5=fWb-=hCYmpg7U5N9C94EucQGTOS7YwR2-fo4ptOexzxyg@mail.gmail.com/
Link: https://lore.kernel.org/r/20250519195148.1708988-8-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
</content>
</entry>
<entry>
<title>perf python tracepoint.py: Change the COMM using setproctitle if available</title>
<updated>2025-03-18T23:08:22+00:00</updated>
<author>
<name>Arnaldo Carvalho de Melo</name>
<email>acme@redhat.com</email>
</author>
<published>2025-03-12T20:31:38+00:00</published>
<link rel='alternate' type='text/html' href='https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=a570da214819fa2bd26b8edcaf857867f55e60c5'/>
<id>urn:sha1:a570da214819fa2bd26b8edcaf857867f55e60c5</id>
<content type='text'>
Otherwise when debugging we see just "python" in perf, top, etc.

Signed-off-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Reviewed-by: Ian Rogers &lt;irogers@google.com&gt;
Link: https://lore.kernel.org/r/20250312203141.285263-4-acme@kernel.org
Signed-off-by: Namhyung Kim &lt;namhyung@kernel.org&gt;
</content>
</entry>
<entry>
<title>perf python tracepoint: Switch to using parse_events</title>
<updated>2025-03-12T01:55:38+00:00</updated>
<author>
<name>Ian Rogers</name>
<email>irogers@google.com</email>
</author>
<published>2025-02-28T22:23:08+00:00</published>
<link rel='alternate' type='text/html' href='https://git.rulkc.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=f7cffbabf78203e5b67e4b632741d43644a513ba'/>
<id>urn:sha1:f7cffbabf78203e5b67e4b632741d43644a513ba</id>
<content type='text'>
Rather than manually configuring an evsel, switch to using
parse_events for greater commonality with the rest of the perf code.

Reviewed-by: Howard Chu &lt;howardchu95@gmail.com&gt;
Signed-off-by: Ian Rogers &lt;irogers@google.com&gt;
Tested-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Link: https://lore.kernel.org/r/20250228222308.626803-12-irogers@google.com
Signed-off-by: Namhyung Kim &lt;namhyung@kernel.org&gt;
</content>
</entry>
</feed>
