From: tip-bot for Namhyung Kim <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: mingo@kernel.org, hbathini@linux.vnet.ibm.com,
linux-kernel@vger.kernel.org, namhyung@kernel.org,
acme@redhat.com, jolsa@redhat.com, kjlx@templeofstupid.com,
hpa@zytor.com, tglx@linutronix.de
Subject: [tip:perf/core] perf tools: Remove const from thread read accessors
Date: Thu, 30 May 2019 01:07:40 -0700 [thread overview]
Message-ID: <tip-7cb10a08df98e643b87d4bc8422e50e9c43b5c60@git.kernel.org> (raw)
In-Reply-To: <20190527061149.168640-1-namhyung@kernel.org>
Commit-ID: 7cb10a08df98e643b87d4bc8422e50e9c43b5c60
Gitweb: https://git.kernel.org/tip/7cb10a08df98e643b87d4bc8422e50e9c43b5c60
Author: Namhyung Kim <namhyung@kernel.org>
AuthorDate: Mon, 27 May 2019 15:11:49 +0900
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 28 May 2019 18:37:43 -0300
perf tools: Remove const from thread read accessors
The namespaces and comm fields of a thread are protected by rwsem and
require write access for it. So it ended up using a cast to remove
the const qualifier. Let's get rid of the const then.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Hari Bathini <hbathini@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Krister Johansen <kjlx@templeofstupid.com>
Link: http://lkml.kernel.org/r/20190527061149.168640-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/hist.c | 2 +-
tools/perf/util/thread.c | 12 ++++++------
tools/perf/util/thread.h | 4 ++--
3 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 7ace7a10054d..fb3271fd420c 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -2561,7 +2561,7 @@ int __hists__scnprintf_title(struct hists *hists, char *bf, size_t size, bool sh
char unit;
int printed;
const struct dso *dso = hists->dso_filter;
- const struct thread *thread = hists->thread_filter;
+ struct thread *thread = hists->thread_filter;
int socket_id = hists->socket_filter;
unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
u64 nr_events = hists->stats.total_period;
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index b413ba5b9835..aab7807d445f 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -141,13 +141,13 @@ static struct namespaces *__thread__namespaces(const struct thread *thread)
return list_first_entry(&thread->namespaces_list, struct namespaces, list);
}
-struct namespaces *thread__namespaces(const struct thread *thread)
+struct namespaces *thread__namespaces(struct thread *thread)
{
struct namespaces *ns;
- down_read((struct rw_semaphore *)&thread->namespaces_lock);
+ down_read(&thread->namespaces_lock);
ns = __thread__namespaces(thread);
- up_read((struct rw_semaphore *)&thread->namespaces_lock);
+ up_read(&thread->namespaces_lock);
return ns;
}
@@ -271,13 +271,13 @@ static const char *__thread__comm_str(const struct thread *thread)
return comm__str(comm);
}
-const char *thread__comm_str(const struct thread *thread)
+const char *thread__comm_str(struct thread *thread)
{
const char *str;
- down_read((struct rw_semaphore *)&thread->comm_lock);
+ down_read(&thread->comm_lock);
str = __thread__comm_str(thread);
- up_read((struct rw_semaphore *)&thread->comm_lock);
+ up_read(&thread->comm_lock);
return str;
}
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index cf8375c017a0..e97ef6977eb9 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -76,7 +76,7 @@ static inline void thread__exited(struct thread *thread)
thread->dead = true;
}
-struct namespaces *thread__namespaces(const struct thread *thread);
+struct namespaces *thread__namespaces(struct thread *thread);
int thread__set_namespaces(struct thread *thread, u64 timestamp,
struct namespaces_event *event);
@@ -93,7 +93,7 @@ int thread__set_comm_from_proc(struct thread *thread);
int thread__comm_len(struct thread *thread);
struct comm *thread__comm(const struct thread *thread);
struct comm *thread__exec_comm(const struct thread *thread);
-const char *thread__comm_str(const struct thread *thread);
+const char *thread__comm_str(struct thread *thread);
int thread__insert_map(struct thread *thread, struct map *map);
int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp, bool do_maps_clone);
size_t thread__fprintf(struct thread *thread, FILE *fp);
next prev parent reply other threads:[~2019-05-30 8:08 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-22 5:32 [PATCH 0/3] perf tools: Assorted fixes and cleanups for namespace events Namhyung Kim
2019-05-22 5:32 ` [PATCH 1/3] perf tools: Protect reading thread's namespace Namhyung Kim
2019-05-22 13:18 ` Arnaldo Carvalho de Melo
2019-05-23 2:36 ` Namhyung Kim
2019-05-27 6:11 ` [PATCH 4/3] perf tools: Remove const from thread read accessors Namhyung Kim
2019-05-27 14:15 ` Arnaldo Carvalho de Melo
2019-05-30 8:07 ` tip-bot for Namhyung Kim [this message]
2019-05-28 21:27 ` [tip:perf/urgent] perf namespace: Protect reading thread's namespace tip-bot for Namhyung Kim
2019-05-22 5:32 ` [PATCH 2/3] perf tools: Add missing swap ops for namespace events Namhyung Kim
2019-05-22 13:23 ` Arnaldo Carvalho de Melo
2019-05-28 21:28 ` [tip:perf/urgent] perf session: " tip-bot for Namhyung Kim
2019-05-22 5:32 ` [PATCH 3/3] perf top: Enable --namespaces option Namhyung Kim
2019-05-22 13:24 ` Arnaldo Carvalho de Melo
2019-05-23 2:42 ` Namhyung Kim
2019-05-30 8:06 ` [tip:perf/core] perf top: Add " tip-bot for Namhyung Kim
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