From ee84a3032b74055feed192a727e872b0a18d1140 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Thu, 8 Jun 2023 16:28:00 -0700 Subject: perf thread: Add accessor functions for thread Using accessors will make it easier to add reference count checking in later patches. Committer notes: thread->nsinfo wasn't wrapped as it is used together with nsinfo__zput(), where does a trick to set the field with a refcount being dropped to NULL, and that doesn't work well with using thread__nsinfo(thread), that loses the &thread->nsinfo pointer. When refcount checking is added to 'struct thread', later in this series, nsinfo__zput(RC_CHK_ACCESS(thread)->nsinfo) will be used to check the thread pointer. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ali Saidi Cc: Andi Kleen Cc: Athira Rajeev Cc: Brian Robbins Cc: Changbin Du Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: Fangrui Song Cc: German Gomez Cc: Ingo Molnar Cc: Ivan Babrou Cc: James Clark Cc: Jing Zhang Cc: Jiri Olsa Cc: John Garry Cc: K Prateek Nayak Cc: Kan Liang Cc: Leo Yan Cc: Liam Howlett Cc: Mark Rutland Cc: Miguel Ojeda Cc: Mike Leach Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Sean Christopherson Cc: Steinar H. Gunderson Cc: Suzuki Poulouse Cc: Wenyu Liu Cc: Will Deacon Cc: Yang Jihong Cc: Ye Xingchen Cc: Yuan Can Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230608232823.4027869-4-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/thread-stack.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) (limited to 'tools/perf/util/thread-stack.c') diff --git a/tools/perf/util/thread-stack.c b/tools/perf/util/thread-stack.c index 4b85c1728012..374d142e7390 100644 --- a/tools/perf/util/thread-stack.c +++ b/tools/perf/util/thread-stack.c @@ -112,7 +112,7 @@ struct thread_stack { */ static inline bool thread_stack__per_cpu(struct thread *thread) { - return !(thread->tid || thread->pid_); + return !(thread__tid(thread) || thread__pid(thread)); } static int thread_stack__grow(struct thread_stack *ts) @@ -155,8 +155,8 @@ static int thread_stack__init(struct thread_stack *ts, struct thread *thread, ts->br_stack_sz = br_stack_sz; } - if (thread->maps && maps__machine(thread->maps)) { - struct machine *machine = maps__machine(thread->maps); + if (thread__maps(thread) && maps__machine(thread__maps(thread))) { + struct machine *machine = maps__machine(thread__maps(thread)); const char *arch = perf_env__arch(machine->env); ts->kernel_start = machine__kernel_start(machine); @@ -175,7 +175,7 @@ static struct thread_stack *thread_stack__new(struct thread *thread, int cpu, bool callstack, unsigned int br_stack_sz) { - struct thread_stack *ts = thread->ts, *new_ts; + struct thread_stack *ts = thread__ts(thread), *new_ts; unsigned int old_sz = ts ? ts->arr_sz : 0; unsigned int new_sz = 1; @@ -189,8 +189,8 @@ static struct thread_stack *thread_stack__new(struct thread *thread, int cpu, if (ts) memcpy(new_ts, ts, old_sz * sizeof(*ts)); new_ts->arr_sz = new_sz; - zfree(&thread->ts); - thread->ts = new_ts; + free(thread__ts(thread)); + thread__set_ts(thread, new_ts); ts = new_ts; } @@ -207,7 +207,7 @@ static struct thread_stack *thread_stack__new(struct thread *thread, int cpu, static struct thread_stack *thread__cpu_stack(struct thread *thread, int cpu) { - struct thread_stack *ts = thread->ts; + struct thread_stack *ts = thread__ts(thread); if (cpu < 0) cpu = 0; @@ -232,7 +232,7 @@ static inline struct thread_stack *thread__stack(struct thread *thread, if (thread_stack__per_cpu(thread)) return thread__cpu_stack(thread, cpu); - return thread->ts; + return thread__ts(thread); } static int thread_stack__push(struct thread_stack *ts, u64 ret_addr, @@ -363,7 +363,7 @@ static int __thread_stack__flush(struct thread *thread, struct thread_stack *ts) int thread_stack__flush(struct thread *thread) { - struct thread_stack *ts = thread->ts; + struct thread_stack *ts = thread__ts(thread); unsigned int pos; int err = 0; @@ -502,13 +502,14 @@ static void thread_stack__reset(struct thread *thread, struct thread_stack *ts) void thread_stack__free(struct thread *thread) { - struct thread_stack *ts = thread->ts; + struct thread_stack *ts = thread__ts(thread); unsigned int pos; if (ts) { for (pos = 0; pos < ts->arr_sz; pos++) __thread_stack__free(thread, ts + pos); - zfree(&thread->ts); + free(thread__ts(thread)); + thread__set_ts(thread, NULL); } } @@ -1127,7 +1128,7 @@ int thread_stack__process(struct thread *thread, struct comm *comm, ts->rstate = X86_RETPOLINE_POSSIBLE; /* Flush stack on exec */ - if (ts->comm != comm && thread->pid_ == thread->tid) { + if (ts->comm != comm && thread__pid(thread) == thread__tid(thread)) { err = __thread_stack__flush(thread, ts); if (err) return err; -- cgit