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| author | Valentin Schneider <vschneid@redhat.com> | 2023-07-07 20:21:48 +0300 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-08-22 12:13:28 +0300 |
| commit | 39f7c41c908bc82947ce47cdd021520ff486c53f (patch) | |
| tree | cbe88b2816dbed77878a4ea518a06a249061e2ec /include/linux/trace_events.h | |
| parent | cfb58e278c6a6b167e24f5820fce9f63bf802b30 (diff) | |
| download | linux-39f7c41c908bc82947ce47cdd021520ff486c53f.tar.xz | |
tracing/filters: Enable filtering a cpumask field by another cpumask
The recently introduced ipi_send_cpumask trace event contains a cpumask
field, but it currently cannot be used in filter expressions.
Make event filtering aware of cpumask fields, and allow these to be
filtered by a user-provided cpumask.
The user-provided cpumask is to be given in cpulist format and wrapped as:
"CPUS{$cpulist}". The use of curly braces instead of parentheses is to
prevent predicate_parse() from parsing the contents of CPUS{...} as a
full-fledged predicate subexpression.
This enables e.g.:
$ trace-cmd record -e 'ipi_send_cpumask' -f 'cpumask & CPUS{2,4,6,8-32}'
Link: https://lkml.kernel.org/r/20230707172155.70873-3-vschneid@redhat.com
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Daniel Bristot de Oliveira <bristot@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Leonardo Bras <leobras@redhat.com>
Cc: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Valentin Schneider <vschneid@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'include/linux/trace_events.h')
| -rw-r--r-- | include/linux/trace_events.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h index c17623c78029..1600aeb8e1a3 100644 --- a/include/linux/trace_events.h +++ b/include/linux/trace_events.h @@ -808,6 +808,7 @@ enum { FILTER_RDYN_STRING, FILTER_PTR_STRING, FILTER_TRACE_FN, + FILTER_CPUMASK, FILTER_COMM, FILTER_CPU, FILTER_STACKTRACE, |