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tracing_cpumask_write
http://www.bricktou.com/kernel/trace/tracetracing_cpumask_write_en.html
Name:tracing_cpumask_write. Proto:static ssize_t tracing_cpumask_write(struct file *filp, const char __user *ubuf, size_t count, loff_t *ppos) Type:ssize_t. Parameter:
[V3,01/19] trace/osnoise: Do not follow tracing_cpumask
https://patchwork.kernel.org/project/linux-trace-devel/patch/36d34e131ab1507eda786195d305ae622a14f75b.1634574261.git.bristot@kernel.org/
In preparation to support multiple instances, decople the osnoise/timelat workload from instance specific tracing_cpumask. Different instances can have conflicing cpumasks, …
[PATCH V8 1/9] tracing/osnoise: Do not follow tracing_cpumask
https://lkml.iu.edu/hypermail/linux/kernel/2110.3/07025.html
if (!cpumask_test_cpu(cpu, &osnoise_cpumask)) goto out_unlock; - if (!cpumask_test_cpu(cpu, tr->tracing_cpumask)) - goto out_unlock;-start_kthread(cpu); out_unlock: @@ -1700,13 +1691,10 @@ static void osnoise_tracer_stop(struct trace_array *tr); * interface to the osnoise trace. By default, it lists all CPUs,
ftrace - Function Tracer — The Linux Kernel documentation
https://www.kernel.org/doc/html/latest/trace/ftrace.html
The cpu number on which the function executed is default enabled. It is sometimes better to only trace one cpu (see... hide: echo nofuncgraph-cpu > trace_options show: echo funcgraph-cpu > trace_options The duration (function’s time of execution) is displayed on …
[V5,01/20] trace/osnoise: Do not follow tracing_cpumask
https://patchwork.kernel.org/project/linux-trace-devel/patch/c46adc4a72c1b498a392ca81263083b4c8f774b5.1635181938.git.bristot@kernel.org/
Message ID: c46adc4a72c1b498a392ca81263083b4c8f774b5.1635181938.git.bristot@kernel.org (mailing …
[PATCH v6 3/3] trace: change CPU ring buffer state from …
https://lkml.iu.edu/hypermail/linux/kernel/1204.3/01206.html
tracing_cpumask: This is a mask that lets the user only trace on specified CPUS. The format is a hex string representing the CPUS. The tracing_cpumask currently doesn't affect the tracing state of per-CPU ring buffers. This patch enables/disables CPU recording as its corresponding bit in tracing_cpumask is set/unset.
[PATCH v6 20/22] tracing/boot: Add cpu_mask option support
https://lkml.iu.edu/hypermail/linux/kernel/2001.1/03028.html
+int tracing_set_cpumask(struct trace_array *tr, + cpumask_var_t tracing_cpumask_new) {- struct trace_array *tr = file_inode(filp)->i_private; - cpumask_var_t tracing_cpumask_new; - int err, cpu;-- if (!alloc_cpumask_var(&tracing_cpumask_new, GFP_KERNEL)) - return -ENOMEM; + int cpu; - err = cpumask_parse_user(ubuf, count, tracing_cpumask_new); - if (err)
[PATCH v2 3/4] tracing: Have hwlat trace migrate across …
https://lkml.iu.edu/hypermail/linux/kernel/1608.1/02485.html
+ tracing_cpumask - the CPUs to move the hwlat thread across hwlat_detector/width - specified amount of time to spin within window (usecs) hwlat_detector/window - amount of time between (width) runs (usecs) + +The hwlat detector's kernel thread will migrate across each CPU specified in +tracing_cpumask between each window.
[PATCH] cpumask: use new operators in kernel/trace
*tip:tracing/urgent] cpumask: use new operators in kernel/trace 2009-06-12 11:45 [PATCH] cpumask: use new operators in kernel/trace Rusty Russell @ 2009-06-15 18:12 ` tip-bot for Rusty Russell 0 siblings, 0 replies; 2+ messages in thread From: tip-bot for Rusty Russell @ 2009-06-15 18:12 UTC (permalink / raw) To: linux-tip-commits; +Cc: linux-kernel ...
Re: [PATCH V4 01/19] trace/osnoise: Do not follow tracing_cpumask
https://lkml.iu.edu/hypermail/linux/kernel/2110.3/00608.html
>> - * on the set of CPUs allowed here AND on "tracing_cpumask." Why not >> - * have just "tracing_cpumask?" Because the user might be interested >> - * in tracing what is running on other CPUs. For instance, one might >> - * run osnoise in one HT …
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