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-rw-r--r--kernel/trace/Kconfig15
-rw-r--r--kernel/trace/blktrace.c28
-rw-r--r--kernel/trace/ftrace.c24
-rw-r--r--kernel/trace/power-traces.c3
-rw-r--r--kernel/trace/ring_buffer.c6
-rw-r--r--kernel/trace/trace_output.c3
6 files changed, 40 insertions, 39 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index b516a8e19d51..fc382d6e2765 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -81,21 +81,6 @@ config EVENT_TRACING
select CONTEXT_SWITCH_TRACER
bool
-config EVENT_POWER_TRACING_DEPRECATED
- depends on EVENT_TRACING
- bool "Deprecated power event trace API, to be removed"
- default y
- help
- Provides old power event types:
- C-state/idle accounting events:
- power:power_start
- power:power_end
- and old cpufreq accounting event:
- power:power_frequency
- This is for userspace compatibility
- and will vanish after 5 kernel iterations,
- namely 3.1.
-
config CONTEXT_SWITCH_TRACER
bool
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 71259e2b6b61..9e5b8c272eec 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -739,6 +739,12 @@ static void blk_add_trace_rq_complete(void *ignore,
struct request_queue *q,
struct request *rq)
{
+ struct blk_trace *bt = q->blk_trace;
+
+ /* if control ever passes through here, it's a request based driver */
+ if (unlikely(bt && !bt->rq_based))
+ bt->rq_based = true;
+
blk_add_trace_rq(q, rq, BLK_TA_COMPLETE);
}
@@ -774,15 +780,30 @@ static void blk_add_trace_bio_bounce(void *ignore,
blk_add_trace_bio(q, bio, BLK_TA_BOUNCE, 0);
}
-static void blk_add_trace_bio_complete(void *ignore,
- struct request_queue *q, struct bio *bio,
- int error)
+static void blk_add_trace_bio_complete(void *ignore, struct bio *bio, int error)
{
+ struct request_queue *q;
+ struct blk_trace *bt;
+
+ if (!bio->bi_bdev)
+ return;
+
+ q = bdev_get_queue(bio->bi_bdev);
+ bt = q->blk_trace;
+
+ /*
+ * Request based drivers will generate both rq and bio completions.
+ * Ignore bio ones.
+ */
+ if (likely(!bt) || bt->rq_based)
+ return;
+
blk_add_trace_bio(q, bio, BLK_TA_COMPLETE, error);
}
static void blk_add_trace_bio_backmerge(void *ignore,
struct request_queue *q,
+ struct request *rq,
struct bio *bio)
{
blk_add_trace_bio(q, bio, BLK_TA_BACKMERGE, 0);
@@ -790,6 +811,7 @@ static void blk_add_trace_bio_backmerge(void *ignore,
static void blk_add_trace_bio_frontmerge(void *ignore,
struct request_queue *q,
+ struct request *rq,
struct bio *bio)
{
blk_add_trace_bio(q, bio, BLK_TA_FRONTMERGE, 0);
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index e6effd0c40a9..6893d5a2bf08 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -762,7 +762,6 @@ ftrace_find_profiled_func(struct ftrace_profile_stat *stat, unsigned long ip)
{
struct ftrace_profile *rec;
struct hlist_head *hhd;
- struct hlist_node *n;
unsigned long key;
key = hash_long(ip, ftrace_profile_bits);
@@ -771,7 +770,7 @@ ftrace_find_profiled_func(struct ftrace_profile_stat *stat, unsigned long ip)
if (hlist_empty(hhd))
return NULL;
- hlist_for_each_entry_rcu(rec, n, hhd, node) {
+ hlist_for_each_entry_rcu(rec, hhd, node) {
if (rec->ip == ip)
return rec;
}
@@ -1133,7 +1132,6 @@ ftrace_lookup_ip(struct ftrace_hash *hash, unsigned long ip)
unsigned long key;
struct ftrace_func_entry *entry;
struct hlist_head *hhd;
- struct hlist_node *n;
if (ftrace_hash_empty(hash))
return NULL;
@@ -1145,7 +1143,7 @@ ftrace_lookup_ip(struct ftrace_hash *hash, unsigned long ip)
hhd = &hash->buckets[key];
- hlist_for_each_entry_rcu(entry, n, hhd, hlist) {
+ hlist_for_each_entry_rcu(entry, hhd, hlist) {
if (entry->ip == ip)
return entry;
}
@@ -1202,7 +1200,7 @@ remove_hash_entry(struct ftrace_hash *hash,
static void ftrace_hash_clear(struct ftrace_hash *hash)
{
struct hlist_head *hhd;
- struct hlist_node *tp, *tn;
+ struct hlist_node *tn;
struct ftrace_func_entry *entry;
int size = 1 << hash->size_bits;
int i;
@@ -1212,7 +1210,7 @@ static void ftrace_hash_clear(struct ftrace_hash *hash)
for (i = 0; i < size; i++) {
hhd = &hash->buckets[i];
- hlist_for_each_entry_safe(entry, tp, tn, hhd, hlist)
+ hlist_for_each_entry_safe(entry, tn, hhd, hlist)
free_hash_entry(hash, entry);
}
FTRACE_WARN_ON(hash->count);
@@ -1275,7 +1273,6 @@ alloc_and_copy_ftrace_hash(int size_bits, struct ftrace_hash *hash)
{
struct ftrace_func_entry *entry;
struct ftrace_hash *new_hash;
- struct hlist_node *tp;
int size;
int ret;
int i;
@@ -1290,7 +1287,7 @@ alloc_and_copy_ftrace_hash(int size_bits, struct ftrace_hash *hash)
size = 1 << hash->size_bits;
for (i = 0; i < size; i++) {
- hlist_for_each_entry(entry, tp, &hash->buckets[i], hlist) {
+ hlist_for_each_entry(entry, &hash->buckets[i], hlist) {
ret = add_hash_entry(new_hash, entry->ip);
if (ret < 0)
goto free_hash;
@@ -1316,7 +1313,7 @@ ftrace_hash_move(struct ftrace_ops *ops, int enable,
struct ftrace_hash **dst, struct ftrace_hash *src)
{
struct ftrace_func_entry *entry;
- struct hlist_node *tp, *tn;
+ struct hlist_node *tn;
struct hlist_head *hhd;
struct ftrace_hash *old_hash;
struct ftrace_hash *new_hash;
@@ -1362,7 +1359,7 @@ ftrace_hash_move(struct ftrace_ops *ops, int enable,
size = 1 << src->size_bits;
for (i = 0; i < size; i++) {
hhd = &src->buckets[i];
- hlist_for_each_entry_safe(entry, tp, tn, hhd, hlist) {
+ hlist_for_each_entry_safe(entry, tn, hhd, hlist) {
if (bits > 0)
key = hash_long(entry->ip, bits);
else
@@ -2901,7 +2898,6 @@ static void function_trace_probe_call(unsigned long ip, unsigned long parent_ip,
{
struct ftrace_func_probe *entry;
struct hlist_head *hhd;
- struct hlist_node *n;
unsigned long key;
key = hash_long(ip, FTRACE_HASH_BITS);
@@ -2917,7 +2913,7 @@ static void function_trace_probe_call(unsigned long ip, unsigned long parent_ip,
* on the hash. rcu_read_lock is too dangerous here.
*/
preempt_disable_notrace();
- hlist_for_each_entry_rcu(entry, n, hhd, node) {
+ hlist_for_each_entry_rcu(entry, hhd, node) {
if (entry->ip == ip)
entry->ops->func(ip, parent_ip, &entry->data);
}
@@ -3068,7 +3064,7 @@ __unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,
void *data, int flags)
{
struct ftrace_func_probe *entry;
- struct hlist_node *n, *tmp;
+ struct hlist_node *tmp;
char str[KSYM_SYMBOL_LEN];
int type = MATCH_FULL;
int i, len = 0;
@@ -3091,7 +3087,7 @@ __unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,
for (i = 0; i < FTRACE_FUNC_HASHSIZE; i++) {
struct hlist_head *hhd = &ftrace_func_hash[i];
- hlist_for_each_entry_safe(entry, n, tmp, hhd, node) {
+ hlist_for_each_entry_safe(entry, tmp, hhd, node) {
/* break up if statements for readability */
if ((flags & PROBE_TEST_FUNC) && entry->ops != ops)
diff --git a/kernel/trace/power-traces.c b/kernel/trace/power-traces.c
index f55fcf61b223..1c71382b283d 100644
--- a/kernel/trace/power-traces.c
+++ b/kernel/trace/power-traces.c
@@ -13,8 +13,5 @@
#define CREATE_TRACE_POINTS
#include <trace/events/power.h>
-#ifdef EVENT_POWER_TRACING_DEPRECATED
-EXPORT_TRACEPOINT_SYMBOL_GPL(power_start);
-#endif
EXPORT_TRACEPOINT_SYMBOL_GPL(cpu_idle);
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 7244acde77b0..6989df2ba194 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -178,7 +178,7 @@ void tracing_off_permanent(void)
#define RB_MAX_SMALL_DATA (RB_ALIGNMENT * RINGBUF_TYPE_DATA_TYPE_LEN_MAX)
#define RB_EVNT_MIN_SIZE 8U /* two 32bit words */
-#if !defined(CONFIG_64BIT) || defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
+#ifndef CONFIG_HAVE_64BIT_ALIGNED_ACCESS
# define RB_FORCE_8BYTE_ALIGNMENT 0
# define RB_ARCH_ALIGNMENT RB_ALIGNMENT
#else
@@ -186,6 +186,8 @@ void tracing_off_permanent(void)
# define RB_ARCH_ALIGNMENT 8U
#endif
+#define RB_ALIGN_DATA __aligned(RB_ARCH_ALIGNMENT)
+
/* define RINGBUF_TYPE_DATA for 'case RINGBUF_TYPE_DATA:' */
#define RINGBUF_TYPE_DATA 0 ... RINGBUF_TYPE_DATA_TYPE_LEN_MAX
@@ -334,7 +336,7 @@ EXPORT_SYMBOL_GPL(ring_buffer_event_data);
struct buffer_data_page {
u64 time_stamp; /* page time stamp */
local_t commit; /* write committed index */
- unsigned char data[]; /* data of buffer page */
+ unsigned char data[] RB_ALIGN_DATA; /* data of buffer page */
};
/*
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 194d79602dc7..697e88d13907 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -739,12 +739,11 @@ static int task_state_char(unsigned long state)
struct trace_event *ftrace_find_event(int type)
{
struct trace_event *event;
- struct hlist_node *n;
unsigned key;
key = type & (EVENT_HASHSIZE - 1);
- hlist_for_each_entry(event, n, &event_hash[key], node) {
+ hlist_for_each_entry(event, &event_hash[key], node) {
if (event->type == type)
return event;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-27 00:19:31 +0000