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| author | Daniel Bristot de Oliveira <bristot@kernel.org> | 2021-10-31 19:05:00 +0100 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2021-11-01 23:10:09 +0100 |
| commit | dae181349f1e9d279f171afc708d2824ab35a86f (patch) | |
| tree | ff65258a047dd1adc32e947f974abcd692dcf41b /kernel/irq/generic-chip.c | |
| parent | tracing/osnoise: Use start/stop_per_cpu_kthreads() on osnoise_cpus_write() (diff) | |
| download | linux-dae181349f1e9d279f171afc708d2824ab35a86f.tar.xz linux-dae181349f1e9d279f171afc708d2824ab35a86f.zip | |
tracing/osnoise: Support a list of trace_array *tr
osnoise/timerlat were built to run a single instance, and for this,
a single variable is enough to store the current struct trace_array
*tr with information about the tracing instance. This is done via
the *osnoise_trace variable. A trace_array represents a trace instance.
In preparation to support multiple instances, replace the
*osnoise_trace variable with an RCU protected list of instances.
The operations that refer to an instance now propagate to all
elements of the list (all instances).
Also, replace the osnoise_busy variable with a check if the list
has elements (busy).
No functional change is expected with this patch, i.e., only one
instance is allowed yet.
Link: https://lkml.kernel.org/r/91d006e889b9a5d1ff258fe6077f021ae3f26372.1635702894.git.bristot@kernel.org
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: linux-rt-users@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/irq/generic-chip.c')
0 files changed, 0 insertions, 0 deletions