[tip:sched/core] sched/debug: Rename task-state printing helpers
From: tip-bot for Peter Zijlstra
Date: Tue Oct 10 2017 - 06:59:05 EST
Commit-ID: 1d48b080bcce0a5e7d7aa2dbcdb35deefc188c3f
Gitweb: https://git.kernel.org/tip/1d48b080bcce0a5e7d7aa2dbcdb35deefc188c3f
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
AuthorDate: Fri, 29 Sep 2017 13:50:16 +0200
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 10 Oct 2017 11:43:29 +0200
sched/debug: Rename task-state printing helpers
Steve requested better names for the new task-state helper functions.
So introduce the concept of task-state index for the printing and
rename __get_task_state() to task_state_index() and
__task_state_to_char() to task_index_to_char().
Requested-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Acked-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20170929115016.pzlqc7ss3ccystyg@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
fs/proc/array.c | 2 +-
include/linux/sched.h | 6 +++---
include/trace/events/sched.h | 2 +-
kernel/trace/trace_output.c | 12 ++++++------
kernel/trace/trace_sched_wakeup.c | 8 ++++----
5 files changed, 15 insertions(+), 15 deletions(-)
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 77a8eac..1b5406c 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -137,7 +137,7 @@ static const char * const task_state_array[] = {
static inline const char *get_task_state(struct task_struct *tsk)
{
BUILD_BUG_ON(1 + ilog2(TASK_REPORT_MAX) != ARRAY_SIZE(task_state_array));
- return task_state_array[__get_task_state(tsk)];
+ return task_state_array[task_state_index(tsk)];
}
static inline int get_task_umask(struct task_struct *tsk)
diff --git a/include/linux/sched.h b/include/linux/sched.h
index bdd6ad6..33a01f4 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1248,7 +1248,7 @@ static inline pid_t task_pgrp_nr(struct task_struct *tsk)
#define TASK_REPORT_IDLE (TASK_REPORT + 1)
#define TASK_REPORT_MAX (TASK_REPORT_IDLE << 1)
-static inline unsigned int __get_task_state(struct task_struct *tsk)
+static inline unsigned int task_state_index(struct task_struct *tsk)
{
unsigned int tsk_state = READ_ONCE(tsk->state);
unsigned int state = (tsk_state | tsk->exit_state) & TASK_REPORT;
@@ -1261,7 +1261,7 @@ static inline unsigned int __get_task_state(struct task_struct *tsk)
return fls(state);
}
-static inline char __task_state_to_char(unsigned int state)
+static inline char task_index_to_char(unsigned int state)
{
static const char state_char[] = "RSDTtXZPI";
@@ -1272,7 +1272,7 @@ static inline char __task_state_to_char(unsigned int state)
static inline char task_state_to_char(struct task_struct *tsk)
{
- return __task_state_to_char(__get_task_state(tsk));
+ return task_index_to_char(task_state_index(tsk));
}
/**
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index 3c8b7f6..fab74a1 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -117,7 +117,7 @@ static inline long __trace_sched_switch_state(bool preempt, struct task_struct *
if (preempt)
return TASK_STATE_MAX;
- return __get_task_state(p);
+ return task_state_index(p);
}
#endif /* CREATE_TRACE_POINTS */
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index c738e76..90db994 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -921,8 +921,8 @@ static enum print_line_t trace_ctxwake_print(struct trace_iterator *iter,
trace_assign_type(field, iter->ent);
- T = __task_state_to_char(field->next_state);
- S = __task_state_to_char(field->prev_state);
+ T = task_index_to_char(field->next_state);
+ S = task_index_to_char(field->prev_state);
trace_find_cmdline(field->next_pid, comm);
trace_seq_printf(&iter->seq,
" %5d:%3d:%c %s [%03d] %5d:%3d:%c %s\n",
@@ -957,8 +957,8 @@ static int trace_ctxwake_raw(struct trace_iterator *iter, char S)
trace_assign_type(field, iter->ent);
if (!S)
- S = __task_state_to_char(field->prev_state);
- T = __task_state_to_char(field->next_state);
+ S = task_index_to_char(field->prev_state);
+ T = task_index_to_char(field->next_state);
trace_seq_printf(&iter->seq, "%d %d %c %d %d %d %c\n",
field->prev_pid,
field->prev_prio,
@@ -993,8 +993,8 @@ static int trace_ctxwake_hex(struct trace_iterator *iter, char S)
trace_assign_type(field, iter->ent);
if (!S)
- S = __task_state_to_char(field->prev_state);
- T = __task_state_to_char(field->next_state);
+ S = task_index_to_char(field->prev_state);
+ T = task_index_to_char(field->next_state);
SEQ_PUT_HEX_FIELD(s, field->prev_pid);
SEQ_PUT_HEX_FIELD(s, field->prev_prio);
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index 0c33197..500f370 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -397,10 +397,10 @@ tracing_sched_switch_trace(struct trace_array *tr,
entry = ring_buffer_event_data(event);
entry->prev_pid = prev->pid;
entry->prev_prio = prev->prio;
- entry->prev_state = __get_task_state(prev);
+ entry->prev_state = task_state_index(prev);
entry->next_pid = next->pid;
entry->next_prio = next->prio;
- entry->next_state = __get_task_state(next);
+ entry->next_state = task_state_index(next);
entry->next_cpu = task_cpu(next);
if (!call_filter_check_discard(call, entry, buffer, event))
@@ -425,10 +425,10 @@ tracing_sched_wakeup_trace(struct trace_array *tr,
entry = ring_buffer_event_data(event);
entry->prev_pid = curr->pid;
entry->prev_prio = curr->prio;
- entry->prev_state = __get_task_state(curr);
+ entry->prev_state = task_state_index(curr);
entry->next_pid = wakee->pid;
entry->next_prio = wakee->prio;
- entry->next_state = __get_task_state(wakee);
+ entry->next_state = task_state_index(wakee);
entry->next_cpu = task_cpu(wakee);
if (!call_filter_check_discard(call, entry, buffer, event))