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Message-ID: <20251002123553.389467-1-costa.shul@redhat.com>
Date: Thu, 2 Oct 2025 15:35:38 +0300
From: Costa Shulyupin <costa.shul@...hat.com>
To: Steven Rostedt <rostedt@...dmis.org>,
Tomas Glozar <tglozar@...hat.com>,
Crystal Wood <crwood@...hat.com>,
Costa Shulyupin <costa.shul@...hat.com>,
John Kacur <jkacur@...hat.com>,
Eder Zulian <ezulian@...hat.com>,
linux-trace-kernel@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/2] tools/rtla: Add for_each_monitored_cpu() helper
The rtla tools have many instances of iterating over CPUs while
checking if they are monitored.
Add a for_each_monitored_cpu() helper macro to make the code
more readable and reduce code duplication.
Signed-off-by: Costa Shulyupin <costa.shul@...hat.com>
---
tools/tracing/rtla/src/common.h | 4 ++++
tools/tracing/rtla/src/osnoise_hist.c | 28 ++++++----------------
tools/tracing/rtla/src/osnoise_top.c | 4 +---
tools/tracing/rtla/src/timerlat.c | 9 ++------
tools/tracing/rtla/src/timerlat_hist.c | 32 +++++++-------------------
tools/tracing/rtla/src/timerlat_top.c | 4 +---
6 files changed, 23 insertions(+), 58 deletions(-)
diff --git a/tools/tracing/rtla/src/common.h b/tools/tracing/rtla/src/common.h
index 355f113a14a3..68cf1c20cb5c 100644
--- a/tools/tracing/rtla/src/common.h
+++ b/tools/tracing/rtla/src/common.h
@@ -107,6 +107,10 @@ struct common_params {
struct timerlat_u_params user;
};
+#define for_each_monitored_cpu(cpu, nr_cpus, common) \
+ for (cpu = 0; cpu < nr_cpus; cpu++) \
+ if (!(common)->cpus || CPU_ISSET(cpu, &(common)->monitored_cpus))
+
struct tool_ops;
/*
diff --git a/tools/tracing/rtla/src/osnoise_hist.c b/tools/tracing/rtla/src/osnoise_hist.c
index dffb6d0a98d7..844f0468953c 100644
--- a/tools/tracing/rtla/src/osnoise_hist.c
+++ b/tools/tracing/rtla/src/osnoise_hist.c
@@ -247,9 +247,7 @@ static void osnoise_hist_header(struct osnoise_tool *tool)
if (!params->common.hist.no_index)
trace_seq_printf(s, "Index");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].count)
continue;
@@ -278,9 +276,7 @@ osnoise_print_summary(struct osnoise_params *params,
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "count:");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].count)
continue;
@@ -292,9 +288,7 @@ osnoise_print_summary(struct osnoise_params *params,
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "min: ");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].count)
continue;
@@ -307,9 +301,7 @@ osnoise_print_summary(struct osnoise_params *params,
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "avg: ");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].count)
continue;
@@ -325,9 +317,7 @@ osnoise_print_summary(struct osnoise_params *params,
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "max: ");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].count)
continue;
@@ -362,9 +352,7 @@ osnoise_print_stats(struct osnoise_tool *tool)
trace_seq_printf(trace->seq, "%-6d",
bucket * data->bucket_size);
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].count)
continue;
@@ -400,9 +388,7 @@ osnoise_print_stats(struct osnoise_tool *tool)
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "over: ");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].count)
continue;
diff --git a/tools/tracing/rtla/src/osnoise_top.c b/tools/tracing/rtla/src/osnoise_top.c
index 95418f7ecc96..defa1eb63bee 100644
--- a/tools/tracing/rtla/src/osnoise_top.c
+++ b/tools/tracing/rtla/src/osnoise_top.c
@@ -243,9 +243,7 @@ osnoise_print_stats(struct osnoise_tool *top)
osnoise_top_header(top);
- for (i = 0; i < nr_cpus; i++) {
- if (params->common.cpus && !CPU_ISSET(i, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(i, nr_cpus, ¶ms->common) {
osnoise_top_print(top, i);
}
diff --git a/tools/tracing/rtla/src/timerlat.c b/tools/tracing/rtla/src/timerlat.c
index b69212874127..28ea4f6710c1 100644
--- a/tools/tracing/rtla/src/timerlat.c
+++ b/tools/tracing/rtla/src/timerlat.c
@@ -126,9 +126,7 @@ int timerlat_enable(struct osnoise_tool *tool)
nr_cpus = sysconf(_SC_NPROCESSORS_CONF);
- for (i = 0; i < nr_cpus; i++) {
- if (params->common.cpus && !CPU_ISSET(i, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(i, nr_cpus, ¶ms->common) {
if (save_cpu_idle_disable_state(i) < 0) {
err_msg("Could not save cpu idle state.\n");
return -1;
@@ -221,10 +219,7 @@ void timerlat_free(struct osnoise_tool *tool)
if (dma_latency_fd >= 0)
close(dma_latency_fd);
if (params->deepest_idle_state >= -1) {
- for (i = 0; i < nr_cpus; i++) {
- if (params->common.cpus &&
- !CPU_ISSET(i, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(i, nr_cpus, ¶ms->common) {
restore_cpu_idle_disable_state(i);
}
}
diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c
index 606c1688057b..02d3ffd2cf4b 100644
--- a/tools/tracing/rtla/src/timerlat_hist.c
+++ b/tools/tracing/rtla/src/timerlat_hist.c
@@ -305,9 +305,7 @@ static void timerlat_hist_header(struct osnoise_tool *tool)
if (!params->common.hist.no_index)
trace_seq_printf(s, "Index");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -359,9 +357,7 @@ timerlat_print_summary(struct timerlat_params *params,
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "count:");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -383,9 +379,7 @@ timerlat_print_summary(struct timerlat_params *params,
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "min: ");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -413,9 +407,7 @@ timerlat_print_summary(struct timerlat_params *params,
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "avg: ");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -443,9 +435,7 @@ timerlat_print_summary(struct timerlat_params *params,
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "max: ");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -490,9 +480,7 @@ timerlat_print_stats_all(struct timerlat_params *params,
sum.min_thread = ~0;
sum.min_user = ~0;
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -639,9 +627,7 @@ timerlat_print_stats(struct osnoise_tool *tool)
trace_seq_printf(trace->seq, "%-6d",
bucket * data->bucket_size);
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
@@ -679,9 +665,7 @@ timerlat_print_stats(struct osnoise_tool *tool)
if (!params->common.hist.no_index)
trace_seq_printf(trace->seq, "over: ");
- for (cpu = 0; cpu < data->nr_cpus; cpu++) {
- if (params->common.cpus && !CPU_ISSET(cpu, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(cpu, data->nr_cpus, ¶ms->common) {
if (!data->hist[cpu].irq_count && !data->hist[cpu].thread_count)
continue;
diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c
index fc479a0dcb59..607b57f2f231 100644
--- a/tools/tracing/rtla/src/timerlat_top.c
+++ b/tools/tracing/rtla/src/timerlat_top.c
@@ -459,9 +459,7 @@ timerlat_print_stats(struct osnoise_tool *top)
timerlat_top_header(params, top);
- for (i = 0; i < nr_cpus; i++) {
- if (params->common.cpus && !CPU_ISSET(i, ¶ms->common.monitored_cpus))
- continue;
+ for_each_monitored_cpu(i, nr_cpus, ¶ms->common) {
timerlat_top_print(top, i);
timerlat_top_update_sum(top, i, &summary);
}
--
2.51.0
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