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Date: Tue, 17 Oct 2017 00:02:18 +0530
From: Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>
To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc: Will.Deacon@....com, catalin.marinas@....com, mark.rutland@....com,
acme@...nel.org, alexander.shishkin@...ux.intel.com,
peterz@...radead.org, mingo@...hat.com, jnair@...iumnetworks.com,
zhangshaokun@...ilicon.com, Jonathan.Cameron@...wei.com,
Robert.Richter@...ium.com, gklkml16@...il.com
Subject: [PATCH v9 1/5] perf utils: passing pmu as a parameter to function get_cpuid_str
cpuid string will not be same on all CPUs on heterogeneous
platforms like ARM's big.LITTLE, adding provision(using pmu->cpus)
to find cpuid string from associated CPUs of PMU CORE device.
also optimise arguments to function pmu_add_cpu_aliases.
Acked-by: Will Deacon <will.deacon@....com>
Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>
---
tools/perf/arch/powerpc/util/header.c | 2 +-
tools/perf/arch/x86/util/header.c | 2 +-
tools/perf/util/header.h | 3 ++-
tools/perf/util/metricgroup.c | 4 ++--
tools/perf/util/pmu.c | 22 +++++++++++-----------
tools/perf/util/pmu.h | 2 +-
6 files changed, 18 insertions(+), 17 deletions(-)
diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
index 9aaa6f5..2953681 100644
--- a/tools/perf/arch/powerpc/util/header.c
+++ b/tools/perf/arch/powerpc/util/header.c
@@ -34,7 +34,7 @@ get_cpuid(char *buffer, size_t sz)
}
char *
-get_cpuid_str(void)
+get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
{
char *bufp;
diff --git a/tools/perf/arch/x86/util/header.c b/tools/perf/arch/x86/util/header.c
index a74a48d..d52bc27 100644
--- a/tools/perf/arch/x86/util/header.c
+++ b/tools/perf/arch/x86/util/header.c
@@ -65,7 +65,7 @@ get_cpuid(char *buffer, size_t sz)
}
char *
-get_cpuid_str(void)
+get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
{
char *buf = malloc(128);
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index f7a16ee..3de4be9 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -8,6 +8,7 @@
#include <linux/types.h>
#include "event.h"
#include "env.h"
+#include "pmu.h"
enum {
HEADER_RESERVED = 0, /* always cleared */
@@ -165,5 +166,5 @@ int write_padded(struct feat_fd *fd, const void *bf,
*/
int get_cpuid(char *buffer, size_t sz);
-char *get_cpuid_str(void);
+char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused);
#endif /* __PERF_HEADER_H */
diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 0ddd9c1..9b8b671 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -270,7 +270,7 @@ static void metricgroup__print_strlist(struct strlist *metrics, bool raw)
void metricgroup__print(bool metrics, bool metricgroups, char *filter,
bool raw)
{
- struct pmu_events_map *map = perf_pmu__find_map();
+ struct pmu_events_map *map = perf_pmu__find_map(NULL);
struct pmu_event *pe;
int i;
struct rblist groups;
@@ -368,7 +368,7 @@ void metricgroup__print(bool metrics, bool metricgroups, char *filter,
static int metricgroup__add_metric(const char *metric, struct strbuf *events,
struct list_head *group_list)
{
- struct pmu_events_map *map = perf_pmu__find_map();
+ struct pmu_events_map *map = perf_pmu__find_map(NULL);
struct pmu_event *pe;
int ret = -EINVAL;
int i, j;
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 94cf2c2..8b17db5 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -536,12 +536,12 @@ static bool pmu_is_uncore(const char *name)
* Each architecture should provide a more precise id string that
* can be use to match the architecture's "mapfile".
*/
-char * __weak get_cpuid_str(void)
+char * __weak get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
{
return NULL;
}
-static char *perf_pmu__getcpuid(void)
+static char *perf_pmu__getcpuid(struct perf_pmu *pmu)
{
char *cpuid;
static bool printed;
@@ -550,7 +550,7 @@ static char *perf_pmu__getcpuid(void)
if (cpuid)
cpuid = strdup(cpuid);
if (!cpuid)
- cpuid = get_cpuid_str();
+ cpuid = get_cpuid_str(pmu);
if (!cpuid)
return NULL;
@@ -561,10 +561,10 @@ static char *perf_pmu__getcpuid(void)
return cpuid;
}
-struct pmu_events_map *perf_pmu__find_map(void)
+struct pmu_events_map *perf_pmu__find_map(struct perf_pmu *pmu)
{
struct pmu_events_map *map;
- char *cpuid = perf_pmu__getcpuid();
+ char *cpuid = perf_pmu__getcpuid(pmu);
int i;
i = 0;
@@ -587,13 +587,14 @@ struct pmu_events_map *perf_pmu__find_map(void)
* to the current running CPU. Then, add all PMU events from that table
* as aliases.
*/
-static void pmu_add_cpu_aliases(struct list_head *head, const char *name)
+static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu)
{
int i;
struct pmu_events_map *map;
struct pmu_event *pe;
+ const char *name = pmu->name;
- map = perf_pmu__find_map();
+ map = perf_pmu__find_map(pmu);
if (!map)
return;
@@ -655,21 +656,20 @@ static struct perf_pmu *pmu_lookup(const char *name)
if (pmu_aliases(name, &aliases))
return NULL;
- pmu_add_cpu_aliases(&aliases, name);
pmu = zalloc(sizeof(*pmu));
if (!pmu)
return NULL;
pmu->cpus = pmu_cpumask(name);
-
+ pmu->name = strdup(name);
+ pmu->type = type;
pmu->is_uncore = pmu_is_uncore(name);
+ pmu_add_cpu_aliases(&aliases, pmu);
INIT_LIST_HEAD(&pmu->format);
INIT_LIST_HEAD(&pmu->aliases);
list_splice(&format, &pmu->format);
list_splice(&aliases, &pmu->aliases);
- pmu->name = strdup(name);
- pmu->type = type;
list_add_tail(&pmu->list, &pmus);
pmu->default_config = perf_pmu__get_default_config(pmu);
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 7ca6755..abc4728 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -91,6 +91,6 @@ int perf_pmu__test(void);
struct perf_event_attr *perf_pmu__get_default_config(struct perf_pmu *pmu);
-struct pmu_events_map *perf_pmu__find_map(void);
+struct pmu_events_map *perf_pmu__find_map(struct perf_pmu *pmu);
#endif /* __PMU_H */
--
2.9.4
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