From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>, Thomas Gleixner <tglx@linutronix.de>
Cc: Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
Clark Williams <williams@redhat.com>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Hari Bathini <hbathini@linux.vnet.ibm.com>,
Jiri Olsa <jolsa@redhat.com>,
Krister Johansen <kjlx@templeofstupid.com>
Subject: [PATCH 29/44] perf tools: Remove const from thread read accessors
Date: Mon, 27 May 2019 19:37:15 -0300 [thread overview]
Message-ID: <20190527223730.11474-30-acme@kernel.org> (raw)
In-Reply-To: <20190527223730.11474-1-acme@kernel.org>
From: Namhyung Kim <namhyung@kernel.org>
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);
--
2.20.1
next prev parent reply other threads:[~2019-05-27 22:40 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-27 22:36 [GIT PULL] perf/urgent improvements and fixes Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 01/44] perf-with-kcore.sh: Always allow fix_buildid_cache_permissions Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 02/44] perf intel-pt: Fix itrace defaults for perf script Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 03/44] perf auxtrace: " Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 04/44] perf intel-pt: Fix itrace defaults for perf script intel-pt documentation Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 05/44] perf data: Fix 'strncat may truncate' build failure with recent gcc Arnaldo Carvalho de Melo
2019-05-27 22:46 ` Shawn Landden
2019-05-28 13:04 ` Arnaldo Carvalho de Melo
2019-05-28 16:59 ` Shawn Landden
2019-05-28 17:39 ` Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 06/44] perf arm64: Fix mksyscalltbl when system kernel headers are ahead of the kernel Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 07/44] tools include UAPI: Update copy of files related to new fspick, fsmount, fsconfig, fsopen, move_mount and open_tree syscalls Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 08/44] perf augmented_raw_syscalls: Fix up comment Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 09/44] perf beauty: Add generator for 'move_mount' flags argument Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 10/44] perf trace: Beautify 'move_mount' arguments Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 11/44] perf beauty: Add generator for fspick's 'flags' arg values Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 12/44] perf trace: Beautify 'fspick' arguments Arnaldo Carvalho de Melo
2019-05-27 22:36 ` [PATCH 13/44] perf beauty: Add generator for fsconfig's 'cmd' arg values Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 14/44] perf trace: Beautify 'fsconfig' arguments Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 15/44] perf beauty: Add generator for fsmount's 'attr_flags' arg values Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 16/44] perf trace: Introduce syscall_arg__scnprintf_strarray_flags Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 17/44] perf trace: Beautify 'fsmount' arguments Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 18/44] tools arch x86: Sync asm/cpufeatures.h with the with the kernel Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 19/44] tools headers UAPI: Sync linux/sched.h " Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 20/44] perf trace beauty clone: Handle CLONE_PIDFD Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 21/44] tools headers UAPI: Sync linux/fs.h with the kernel Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 22/44] perf beauty: Add generator for sync_file_range's 'flags' arg values Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 23/44] perf trace: Beautify 'sync_file_range' arguments Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 24/44] tools headers UAPI: Sync drm/i915_drm.h with the kernel Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 25/44] tools headers UAPI: Sync drm/drm.h " Arnaldo Carvalho de Melo
2019-05-28 3:17 ` Zhou, David(ChunMing)
2019-05-28 8:07 ` Lionel Landwerlin
2019-05-28 12:53 ` Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 26/44] perf namespace: Protect reading thread's namespace Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 27/44] perf session: Add missing swap ops for namespace events Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 28/44] perf top: Add --namespaces option Arnaldo Carvalho de Melo
2019-05-27 22:37 ` Arnaldo Carvalho de Melo [this message]
2019-05-27 22:37 ` [PATCH 30/44] perf dso: Separate generic code in dso__data_file_size() Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 31/44] perf dso: Separate generic code in dso_cache__read Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 32/44] perf dso: Simplify dso_cache__read function Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 33/44] perf dso: Add BPF DSO read and size hooks Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 34/44] perf test vmlinux-kallsyms: Ignore aliases to _etext when searching on kallsyms Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 35/44] perf machine: Read also the end of the kernel Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 36/44] perf machine: Keep zero in pgoff BPF map Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 37/44] perf tools: Preserve eBPF maps when loading kcore Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 38/44] perf script: Pad DSO name for --call-trace Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 39/44] perf tests: Add map_groups__merge_in test Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 40/44] perf script: Add --show-bpf-events to show eBPF related events Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 41/44] perf script: Remove superfluous BPF event titles Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 42/44] perf version: Append 12 git SHA chars to the version string Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 43/44] perf record: Fix s390 missing module symbol and warning for non-root users Arnaldo Carvalho de Melo
2019-05-27 22:37 ` [PATCH 44/44] tools headers UAPI: Sync kvm.h headers with the kernel sources Arnaldo Carvalho de Melo
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