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Message-Id: <20240429152207.479221-13-james.clark@arm.com>
Date: Mon, 29 Apr 2024 16:21:57 +0100
From: James Clark <james.clark@....com>
To: linux-perf-users@...r.kernel.org,
gankulkarni@...amperecomputing.com,
scclevenger@...amperecomputing.com,
coresight@...ts.linaro.org,
suzuki.poulose@....com,
mike.leach@...aro.org
Cc: James Clark <james.clark@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Jiri Olsa <jolsa@...nel.org>,
Ian Rogers <irogers@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>,
John Garry <john.g.garry@...cle.com>,
Will Deacon <will@...nel.org>,
Leo Yan <leo.yan@...ux.dev>,
linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org,
linux-stm32@...md-mailman.stormreply.com
Subject: [PATCH 11/17] coresight: Expose map arugment in trace ID API
..
System ID functions are unchanged because they will always use the
default map.
Signed-off-by: James Clark <james.clark@....com>
---
.../hwtracing/coresight/coresight-etm-perf.c | 5 +++--
.../coresight/coresight-etm3x-core.c | 5 +++--
.../coresight/coresight-etm4x-core.c | 5 +++--
.../hwtracing/coresight/coresight-trace-id.c | 22 +++++++------------
.../hwtracing/coresight/coresight-trace-id.h | 9 +++++---
5 files changed, 23 insertions(+), 23 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c
index c0c60e6a1703..4afb9d29f355 100644
--- a/drivers/hwtracing/coresight/coresight-etm-perf.c
+++ b/drivers/hwtracing/coresight/coresight-etm-perf.c
@@ -232,7 +232,7 @@ static void free_event_data(struct work_struct *work)
if (!(IS_ERR_OR_NULL(*ppath)))
coresight_release_path(*ppath);
*ppath = NULL;
- coresight_trace_id_put_cpu_id(cpu);
+ coresight_trace_id_put_cpu_id(cpu, coresight_trace_id_map_default());
}
/* mark perf event as done for trace id allocator */
@@ -401,7 +401,8 @@ static void *etm_setup_aux(struct perf_event *event, void **pages,
}
/* ensure we can allocate a trace ID for this CPU */
- trace_id = coresight_trace_id_get_cpu_id(cpu);
+ trace_id = coresight_trace_id_get_cpu_id(cpu,
+ coresight_trace_id_map_default());
if (!IS_VALID_CS_TRACE_ID(trace_id)) {
cpumask_clear_cpu(cpu, mask);
coresight_release_path(path);
diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c
index 9d5c1391ffb1..4149e7675ceb 100644
--- a/drivers/hwtracing/coresight/coresight-etm3x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c
@@ -465,7 +465,8 @@ int etm_read_alloc_trace_id(struct etm_drvdata *drvdata)
*
* trace id function has its own lock
*/
- trace_id = coresight_trace_id_get_cpu_id(drvdata->cpu);
+ trace_id = coresight_trace_id_get_cpu_id(drvdata->cpu,
+ coresight_trace_id_map_default());
if (IS_VALID_CS_TRACE_ID(trace_id))
drvdata->traceid = (u8)trace_id;
else
@@ -477,7 +478,7 @@ int etm_read_alloc_trace_id(struct etm_drvdata *drvdata)
void etm_release_trace_id(struct etm_drvdata *drvdata)
{
- coresight_trace_id_put_cpu_id(drvdata->cpu);
+ coresight_trace_id_put_cpu_id(drvdata->cpu, coresight_trace_id_map_default());
}
static int etm_enable_perf(struct coresight_device *csdev,
diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c
index c2ca4a02dfce..562ef6cb72d8 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c
@@ -241,7 +241,8 @@ int etm4_read_alloc_trace_id(struct etmv4_drvdata *drvdata)
* or return the one currently allocated.
* The trace id function has its own lock
*/
- trace_id = coresight_trace_id_get_cpu_id(drvdata->cpu);
+ trace_id = coresight_trace_id_get_cpu_id(drvdata->cpu,
+ coresight_trace_id_map_default());
if (IS_VALID_CS_TRACE_ID(trace_id))
drvdata->trcid = (u8)trace_id;
else
@@ -253,7 +254,7 @@ int etm4_read_alloc_trace_id(struct etmv4_drvdata *drvdata)
void etm4_release_trace_id(struct etmv4_drvdata *drvdata)
{
- coresight_trace_id_put_cpu_id(drvdata->cpu);
+ coresight_trace_id_put_cpu_id(drvdata->cpu, coresight_trace_id_map_default());
}
struct etm4_enable_arg {
diff --git a/drivers/hwtracing/coresight/coresight-trace-id.c b/drivers/hwtracing/coresight/coresight-trace-id.c
index 19005b5b4dc4..45ddd50d09a6 100644
--- a/drivers/hwtracing/coresight/coresight-trace-id.c
+++ b/drivers/hwtracing/coresight/coresight-trace-id.c
@@ -12,7 +12,7 @@
#include "coresight-trace-id.h"
-/* Default trace ID map. Used on systems that don't require per sink mappings */
+/* Default trace ID map. Used in sysfs mode and for system sources */
static struct coresight_trace_id_map id_map_default;
/* maintain a record of the mapping of IDs and pending releases per cpu */
@@ -152,7 +152,7 @@ static void coresight_trace_id_release_all_pending(void)
DUMP_ID_MAP(id_map);
}
-static int coresight_trace_id_map_get_cpu_id(int cpu, struct coresight_trace_id_map *id_map)
+int coresight_trace_id_get_cpu_id(int cpu, struct coresight_trace_id_map *id_map)
{
unsigned long flags;
int id;
@@ -195,8 +195,9 @@ static int coresight_trace_id_map_get_cpu_id(int cpu, struct coresight_trace_id_
DUMP_ID_MAP(id_map);
return id;
}
+EXPORT_SYMBOL_GPL(coresight_trace_id_get_cpu_id);
-static void coresight_trace_id_map_put_cpu_id(int cpu, struct coresight_trace_id_map *id_map)
+void coresight_trace_id_put_cpu_id(int cpu, struct coresight_trace_id_map *id_map)
{
unsigned long flags;
int id;
@@ -222,6 +223,7 @@ static void coresight_trace_id_map_put_cpu_id(int cpu, struct coresight_trace_id
DUMP_ID_CPU(cpu, id);
DUMP_ID_MAP(id_map);
}
+EXPORT_SYMBOL_GPL(coresight_trace_id_put_cpu_id);
static int coresight_trace_id_map_get_system_id(struct coresight_trace_id_map *id_map)
{
@@ -250,19 +252,11 @@ static void coresight_trace_id_map_put_system_id(struct coresight_trace_id_map *
DUMP_ID_MAP(id_map);
}
-/* API functions */
-
-int coresight_trace_id_get_cpu_id(int cpu)
-{
- return coresight_trace_id_map_get_cpu_id(cpu, &id_map_default);
-}
-EXPORT_SYMBOL_GPL(coresight_trace_id_get_cpu_id);
-
-void coresight_trace_id_put_cpu_id(int cpu)
+struct coresight_trace_id_map *coresight_trace_id_map_default(void)
{
- coresight_trace_id_map_put_cpu_id(cpu, &id_map_default);
+ return &id_map_default;
}
-EXPORT_SYMBOL_GPL(coresight_trace_id_put_cpu_id);
+EXPORT_SYMBOL_GPL(coresight_trace_id_map_default);
int coresight_trace_id_read_cpu_id(int cpu)
{
diff --git a/drivers/hwtracing/coresight/coresight-trace-id.h b/drivers/hwtracing/coresight/coresight-trace-id.h
index 49438a96fcc6..54b9d8ed903b 100644
--- a/drivers/hwtracing/coresight/coresight-trace-id.h
+++ b/drivers/hwtracing/coresight/coresight-trace-id.h
@@ -42,7 +42,10 @@
#define IS_VALID_CS_TRACE_ID(id) \
((id > CORESIGHT_TRACE_ID_RES_0) && (id < CORESIGHT_TRACE_ID_RES_TOP))
-/* Allocate and release IDs for a single default trace ID map */
+/**
+ * Get the global map that's used by sysfs
+ */
+struct coresight_trace_id_map *coresight_trace_id_map_default(void);
/**
* Read and optionally allocate a CoreSight trace ID and associate with a CPU.
@@ -57,7 +60,7 @@
*
* return: CoreSight trace ID or -EINVAL if allocation impossible.
*/
-int coresight_trace_id_get_cpu_id(int cpu);
+int coresight_trace_id_get_cpu_id(int cpu, struct coresight_trace_id_map *id_map);
/**
* Release an allocated trace ID associated with the CPU.
@@ -70,7 +73,7 @@ int coresight_trace_id_get_cpu_id(int cpu);
*
* @cpu: The CPU index to release the associated trace ID.
*/
-void coresight_trace_id_put_cpu_id(int cpu);
+void coresight_trace_id_put_cpu_id(int cpu, struct coresight_trace_id_map *id_map);
/**
* Read the current allocated CoreSight Trace ID value for the CPU.
--
2.34.1
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