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-rw-r--r--include/trace/events/block.h4
-rw-r--r--include/trace/events/ext4.h142
-rw-r--r--include/trace/events/irq.h21
-rw-r--r--include/trace/events/jbd2.h2
-rw-r--r--include/trace/events/power.h81
-rw-r--r--include/trace/events/sched.h33
-rw-r--r--include/trace/ftrace.h119
7 files changed, 301 insertions, 101 deletions
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index 9a74b46..d86af94 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -171,6 +171,7 @@ TRACE_EVENT(block_rq_complete,
(unsigned long long)__entry->sector,
__entry->nr_sector, __entry->errors)
);
+
TRACE_EVENT(block_bio_bounce,
TP_PROTO(struct request_queue *q, struct bio *bio),
@@ -186,7 +187,8 @@ TRACE_EVENT(block_bio_bounce,
),
TP_fast_assign(
- __entry->dev = bio->bi_bdev->bd_dev;
+ __entry->dev = bio->bi_bdev ?
+ bio->bi_bdev->bd_dev : 0;
__entry->sector = bio->bi_sector;
__entry->nr_sector = bio->bi_size >> 9;
blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index 8d433c4e..c1bd8f1 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -5,10 +5,15 @@
#define _TRACE_EXT4_H
#include <linux/writeback.h>
-#include "../../../fs/ext4/ext4.h"
-#include "../../../fs/ext4/mballoc.h"
#include <linux/tracepoint.h>
+struct ext4_allocation_context;
+struct ext4_allocation_request;
+struct ext4_prealloc_space;
+struct ext4_inode_info;
+
+#define EXT4_I(inode) (container_of(inode, struct ext4_inode_info, vfs_inode))
+
TRACE_EVENT(ext4_free_inode,
TP_PROTO(struct inode *inode),
@@ -33,8 +38,8 @@ TRACE_EVENT(ext4_free_inode,
),
TP_printk("dev %s ino %lu mode %d uid %u gid %u blocks %llu",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->mode,
- __entry->uid, __entry->gid,
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->mode, __entry->uid, __entry->gid,
(unsigned long long) __entry->blocks)
);
@@ -56,7 +61,8 @@ TRACE_EVENT(ext4_request_inode,
),
TP_printk("dev %s dir %lu mode %d",
- jbd2_dev_to_name(__entry->dev), __entry->dir, __entry->mode)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->dir,
+ __entry->mode)
);
TRACE_EVENT(ext4_allocate_inode,
@@ -79,7 +85,8 @@ TRACE_EVENT(ext4_allocate_inode,
),
TP_printk("dev %s ino %lu dir %lu mode %d",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->dir, __entry->mode)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ (unsigned long) __entry->dir, __entry->mode)
);
TRACE_EVENT(ext4_write_begin,
@@ -106,8 +113,8 @@ TRACE_EVENT(ext4_write_begin,
),
TP_printk("dev %s ino %lu pos %llu len %u flags %u",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->pos, __entry->len,
- __entry->flags)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->pos, __entry->len, __entry->flags)
);
TRACE_EVENT(ext4_ordered_write_end,
@@ -133,8 +140,8 @@ TRACE_EVENT(ext4_ordered_write_end,
),
TP_printk("dev %s ino %lu pos %llu len %u copied %u",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->pos, __entry->len,
- __entry->copied)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->pos, __entry->len, __entry->copied)
);
TRACE_EVENT(ext4_writeback_write_end,
@@ -160,8 +167,8 @@ TRACE_EVENT(ext4_writeback_write_end,
),
TP_printk("dev %s ino %lu pos %llu len %u copied %u",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->pos, __entry->len,
- __entry->copied)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->pos, __entry->len, __entry->copied)
);
TRACE_EVENT(ext4_journalled_write_end,
@@ -186,8 +193,8 @@ TRACE_EVENT(ext4_journalled_write_end,
),
TP_printk("dev %s ino %lu pos %llu len %u copied %u",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->pos, __entry->len,
- __entry->copied)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->pos, __entry->len, __entry->copied)
);
TRACE_EVENT(ext4_writepage,
@@ -209,7 +216,8 @@ TRACE_EVENT(ext4_writepage,
),
TP_printk("dev %s ino %lu page_index %lu",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->index)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->index)
);
TRACE_EVENT(ext4_da_writepages,
@@ -243,14 +251,49 @@ TRACE_EVENT(ext4_da_writepages,
__entry->range_cyclic = wbc->range_cyclic;
),
- TP_printk("dev %s ino %lu nr_t_write %ld pages_skipped %ld range_start %llu range_end %llu nonblocking %d for_kupdate %d for_reclaim %d range_cyclic %d",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->nr_to_write,
+ TP_printk("dev %s ino %lu nr_to_write %ld pages_skipped %ld range_start %llu range_end %llu nonblocking %d for_kupdate %d for_reclaim %d range_cyclic %d",
+ jbd2_dev_to_name(__entry->dev),
+ (unsigned long) __entry->ino, __entry->nr_to_write,
__entry->pages_skipped, __entry->range_start,
__entry->range_end, __entry->nonblocking,
__entry->for_kupdate, __entry->for_reclaim,
__entry->range_cyclic)
);
+TRACE_EVENT(ext4_da_write_pages,
+ TP_PROTO(struct inode *inode, struct mpage_da_data *mpd),
+
+ TP_ARGS(inode, mpd),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( ino_t, ino )
+ __field( __u64, b_blocknr )
+ __field( __u32, b_size )
+ __field( __u32, b_state )
+ __field( unsigned long, first_page )
+ __field( int, io_done )
+ __field( int, pages_written )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->b_blocknr = mpd->b_blocknr;
+ __entry->b_size = mpd->b_size;
+ __entry->b_state = mpd->b_state;
+ __entry->first_page = mpd->first_page;
+ __entry->io_done = mpd->io_done;
+ __entry->pages_written = mpd->pages_written;
+ ),
+
+ TP_printk("dev %s ino %lu b_blocknr %llu b_size %u b_state 0x%04x first_page %lu io_done %d pages_written %d",
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->b_blocknr, __entry->b_size,
+ __entry->b_state, __entry->first_page,
+ __entry->io_done, __entry->pages_written)
+);
+
TRACE_EVENT(ext4_da_writepages_result,
TP_PROTO(struct inode *inode, struct writeback_control *wbc,
int ret, int pages_written),
@@ -280,7 +323,8 @@ TRACE_EVENT(ext4_da_writepages_result,
),
TP_printk("dev %s ino %lu ret %d pages_written %d pages_skipped %ld congestion %d more_io %d no_nrwrite_index_update %d",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->ret,
+ jbd2_dev_to_name(__entry->dev),
+ (unsigned long) __entry->ino, __entry->ret,
__entry->pages_written, __entry->pages_skipped,
__entry->encountered_congestion, __entry->more_io,
__entry->no_nrwrite_index_update)
@@ -309,8 +353,8 @@ TRACE_EVENT(ext4_da_write_begin,
),
TP_printk("dev %s ino %lu pos %llu len %u flags %u",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->pos, __entry->len,
- __entry->flags)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->pos, __entry->len, __entry->flags)
);
TRACE_EVENT(ext4_da_write_end,
@@ -336,8 +380,8 @@ TRACE_EVENT(ext4_da_write_end,
),
TP_printk("dev %s ino %lu pos %llu len %u copied %u",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->pos, __entry->len,
- __entry->copied)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->pos, __entry->len, __entry->copied)
);
TRACE_EVENT(ext4_discard_blocks,
@@ -387,8 +431,8 @@ TRACE_EVENT(ext4_mb_new_inode_pa,
),
TP_printk("dev %s ino %lu pstart %llu len %u lstart %llu",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->pa_pstart,
- __entry->pa_len, __entry->pa_lstart)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->pa_pstart, __entry->pa_len, __entry->pa_lstart)
);
TRACE_EVENT(ext4_mb_new_group_pa,
@@ -415,8 +459,8 @@ TRACE_EVENT(ext4_mb_new_group_pa,
),
TP_printk("dev %s ino %lu pstart %llu len %u lstart %llu",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->pa_pstart,
- __entry->pa_len, __entry->pa_lstart)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->pa_pstart, __entry->pa_len, __entry->pa_lstart)
);
TRACE_EVENT(ext4_mb_release_inode_pa,
@@ -442,8 +486,8 @@ TRACE_EVENT(ext4_mb_release_inode_pa,
),
TP_printk("dev %s ino %lu block %llu count %u",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->block,
- __entry->count)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->block, __entry->count)
);
TRACE_EVENT(ext4_mb_release_group_pa,
@@ -488,7 +532,7 @@ TRACE_EVENT(ext4_discard_preallocations,
),
TP_printk("dev %s ino %lu",
- jbd2_dev_to_name(__entry->dev), __entry->ino)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino)
);
TRACE_EVENT(ext4_mb_discard_preallocations,
@@ -543,8 +587,8 @@ TRACE_EVENT(ext4_request_blocks,
),
TP_printk("dev %s ino %lu flags %u len %u lblk %llu goal %llu lleft %llu lright %llu pleft %llu pright %llu ",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->flags,
- __entry->len,
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->flags, __entry->len,
(unsigned long long) __entry->logical,
(unsigned long long) __entry->goal,
(unsigned long long) __entry->lleft,
@@ -587,8 +631,8 @@ TRACE_EVENT(ext4_allocate_blocks,
),
TP_printk("dev %s ino %lu flags %u len %u block %llu lblk %llu goal %llu lleft %llu lright %llu pleft %llu pright %llu ",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->flags,
- __entry->len, __entry->block,
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->flags, __entry->len, __entry->block,
(unsigned long long) __entry->logical,
(unsigned long long) __entry->goal,
(unsigned long long) __entry->lleft,
@@ -621,8 +665,8 @@ TRACE_EVENT(ext4_free_blocks,
),
TP_printk("dev %s ino %lu block %llu count %lu metadata %d",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->block,
- __entry->count, __entry->metadata)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->block, __entry->count, __entry->metadata)
);
TRACE_EVENT(ext4_sync_file,
@@ -645,8 +689,8 @@ TRACE_EVENT(ext4_sync_file,
),
TP_printk("dev %s ino %ld parent %ld datasync %d ",
- jbd2_dev_to_name(__entry->dev), __entry->ino, __entry->parent,
- __entry->datasync)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ (unsigned long) __entry->parent, __entry->datasync)
);
TRACE_EVENT(ext4_sync_fs,
@@ -669,6 +713,30 @@ TRACE_EVENT(ext4_sync_fs,
__entry->wait)
);
+TRACE_EVENT(ext4_alloc_da_blocks,
+ TP_PROTO(struct inode *inode),
+
+ TP_ARGS(inode),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( ino_t, ino )
+ __field( unsigned int, data_blocks )
+ __field( unsigned int, meta_blocks )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->data_blocks = EXT4_I(inode)->i_reserved_data_blocks;
+ __entry->meta_blocks = EXT4_I(inode)->i_reserved_meta_blocks;
+ ),
+
+ TP_printk("dev %s ino %lu data_blocks %u meta_blocks %u",
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino,
+ __entry->data_blocks, __entry->meta_blocks)
+);
+
#endif /* _TRACE_EXT4_H */
/* This part must be outside protection */
diff --git a/include/trace/events/irq.h b/include/trace/events/irq.h
index 1cb0c3a..b89f9db 100644
--- a/include/trace/events/irq.h
+++ b/include/trace/events/irq.h
@@ -8,16 +8,17 @@
#include <linux/interrupt.h>
#define softirq_name(sirq) { sirq##_SOFTIRQ, #sirq }
-#define show_softirq_name(val) \
- __print_symbolic(val, \
- softirq_name(HI), \
- softirq_name(TIMER), \
- softirq_name(NET_TX), \
- softirq_name(NET_RX), \
- softirq_name(BLOCK), \
- softirq_name(TASKLET), \
- softirq_name(SCHED), \
- softirq_name(HRTIMER), \
+#define show_softirq_name(val) \
+ __print_symbolic(val, \
+ softirq_name(HI), \
+ softirq_name(TIMER), \
+ softirq_name(NET_TX), \
+ softirq_name(NET_RX), \
+ softirq_name(BLOCK), \
+ softirq_name(BLOCK_IOPOLL), \
+ softirq_name(TASKLET), \
+ softirq_name(SCHED), \
+ softirq_name(HRTIMER), \
softirq_name(RCU))
/**
diff --git a/include/trace/events/jbd2.h b/include/trace/events/jbd2.h
index 10813fa..b851f0b 100644
--- a/include/trace/events/jbd2.h
+++ b/include/trace/events/jbd2.h
@@ -159,7 +159,7 @@ TRACE_EVENT(jbd2_submit_inode_data,
),
TP_printk("dev %s ino %lu",
- jbd2_dev_to_name(__entry->dev), __entry->ino)
+ jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino)
);
#endif /* _TRACE_JBD2_H */
diff --git a/include/trace/events/power.h b/include/trace/events/power.h
new file mode 100644
index 0000000..ea6d579
--- /dev/null
+++ b/include/trace/events/power.h
@@ -0,0 +1,81 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM power
+
+#if !defined(_TRACE_POWER_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_POWER_H
+
+#include <linux/ktime.h>
+#include <linux/tracepoint.h>
+
+#ifndef _TRACE_POWER_ENUM_
+#define _TRACE_POWER_ENUM_
+enum {
+ POWER_NONE = 0,
+ POWER_CSTATE = 1,
+ POWER_PSTATE = 2,
+};
+#endif
+
+
+
+TRACE_EVENT(power_start,
+
+ TP_PROTO(unsigned int type, unsigned int state),
+
+ TP_ARGS(type, state),
+
+ TP_STRUCT__entry(
+ __field( u64, type )
+ __field( u64, state )
+ ),
+
+ TP_fast_assign(
+ __entry->type = type;
+ __entry->state = state;
+ ),
+
+ TP_printk("type=%lu state=%lu", (unsigned long)__entry->type, (unsigned long)__entry->state)
+);
+
+TRACE_EVENT(power_end,
+
+ TP_PROTO(int dummy),
+
+ TP_ARGS(dummy),
+
+ TP_STRUCT__entry(
+ __field( u64, dummy )
+ ),
+
+ TP_fast_assign(
+ __entry->dummy = 0xffff;
+ ),
+
+ TP_printk("dummy=%lu", (unsigned long)__entry->dummy)
+
+);
+
+
+TRACE_EVENT(power_frequency,
+
+ TP_PROTO(unsigned int type, unsigned int state),
+
+ TP_ARGS(type, state),
+
+ TP_STRUCT__entry(
+ __field( u64, type )
+ __field( u64, state )
+ ),
+
+ TP_fast_assign(
+ __entry->type = type;
+ __entry->state = state;
+ ),
+
+ TP_printk("type=%lu state=%lu", (unsigned long)__entry->type, (unsigned long) __entry->state)
+);
+
+#endif /* _TRACE_POWER_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index b48f1ad..4069c43 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -380,6 +380,39 @@ TRACE_EVENT(sched_stat_wait,
);
/*
+ * Tracepoint for accounting runtime (time the task is executing
+ * on a CPU).
+ */
+TRACE_EVENT(sched_stat_runtime,
+
+ TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
+
+ TP_ARGS(tsk, runtime, vruntime),
+
+ TP_STRUCT__entry(
+ __array( char, comm, TASK_COMM_LEN )
+ __field( pid_t, pid )
+ __field( u64, runtime )
+ __field( u64, vruntime )
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
+ __entry->pid = tsk->pid;
+ __entry->runtime = runtime;
+ __entry->vruntime = vruntime;
+ )
+ TP_perf_assign(
+ __perf_count(runtime);
+ ),
+
+ TP_printk("task: %s:%d runtime: %Lu [ns], vruntime: %Lu [ns]",
+ __entry->comm, __entry->pid,
+ (unsigned long long)__entry->runtime,
+ (unsigned long long)__entry->vruntime)
+);
+
+/*
* Tracepoint for accounting sleep time (time the task is not runnable,
* including iowait, see below).
*/
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 308bafd..a0361cb 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -239,9 +239,9 @@ ftrace_format_##call(struct ftrace_event_call *unused, \
#undef __print_flags
#define __print_flags(flag, delim, flag_array...) \
({ \
- static const struct trace_print_flags flags[] = \
+ static const struct trace_print_flags __flags[] = \
{ flag_array, { -1, NULL }}; \
- ftrace_print_flags_seq(p, delim, flag, flags); \
+ ftrace_print_flags_seq(p, delim, flag, __flags); \
})
#undef __print_symbolic
@@ -254,7 +254,7 @@ ftrace_format_##call(struct ftrace_event_call *unused, \
#undef TRACE_EVENT
#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
-enum print_line_t \
+static enum print_line_t \
ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
{ \
struct trace_seq *s = &iter->seq; \
@@ -317,7 +317,7 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
#undef TRACE_EVENT
#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
-int \
+static int \
ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
{ \
struct ftrace_raw_##call field; \
@@ -382,20 +382,14 @@ static inline int ftrace_get_offsets_##call( \
*
* NOTE: The insertion profile callback (ftrace_profile_<call>) is defined later
*
- * static int ftrace_profile_enable_<call>(struct ftrace_event_call *event_call)
+ * static int ftrace_profile_enable_<call>(void)
* {
- * int ret = 0;
- *
- * if (!atomic_inc_return(&event_call->profile_count))
- * ret = register_trace_<call>(ftrace_profile_<call>);
- *
- * return ret;
+ * return register_trace_<call>(ftrace_profile_<call>);
* }
*
- * static void ftrace_profile_disable_<call>(struct ftrace_event_call *event_call)
+ * static void ftrace_profile_disable_<call>(void)
* {
- * if (atomic_add_negative(-1, &event->call->profile_count))
- * unregister_trace_<call>(ftrace_profile_<call>);
+ * unregister_trace_<call>(ftrace_profile_<call>);
* }
*
*/
@@ -405,20 +399,14 @@ static inline int ftrace_get_offsets_##call( \
\
static void ftrace_profile_##call(proto); \
\
-static int ftrace_profile_enable_##call(struct ftrace_event_call *event_call) \
+static int ftrace_profile_enable_##call(void) \
{ \
- int ret = 0; \
- \
- if (!atomic_inc_return(&event_call->profile_count)) \
- ret = register_trace_##call(ftrace_profile_##call); \
- \
- return ret; \
+ return register_trace_##call(ftrace_profile_##call); \
} \
\
-static void ftrace_profile_disable_##call(struct ftrace_event_call *event_call)\
+static void ftrace_profile_disable_##call(void) \
{ \
- if (atomic_add_negative(-1, &event_call->profile_count)) \
- unregister_trace_##call(ftrace_profile_##call); \
+ unregister_trace_##call(ftrace_profile_##call); \
}
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
@@ -660,11 +648,12 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
* struct ftrace_raw_##call *entry;
* u64 __addr = 0, __count = 1;
* unsigned long irq_flags;
+ * struct trace_entry *ent;
* int __entry_size;
* int __data_size;
+ * int __cpu
* int pc;
*
- * local_save_flags(irq_flags);
* pc = preempt_count();
*
* __data_size = ftrace_get_offsets_<call>(&__data_offsets, args);
@@ -675,25 +664,34 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
* sizeof(u64));
* __entry_size -= sizeof(u32);
*
- * do {
- * char raw_data[__entry_size]; <- allocate our sample in the stack
- * struct trace_entry *ent;
+ * // Protect the non nmi buffer
+ * // This also protects the rcu read side
+ * local_irq_save(irq_flags);
+ * __cpu = smp_processor_id();
+ *
+ * if (in_nmi())
+ * raw_data = rcu_dereference(trace_profile_buf_nmi);
+ * else
+ * raw_data = rcu_dereference(trace_profile_buf);
+ *
+ * if (!raw_data)
+ * goto end;
*
- * zero dead bytes from alignment to avoid stack leak to userspace:
+ * raw_data = per_cpu_ptr(raw_data, __cpu);
*
- * *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL;
- * entry = (struct ftrace_raw_<call> *)raw_data;
- * ent = &entry->ent;
- * tracing_generic_entry_update(ent, irq_flags, pc);
- * ent->type = event_call->id;
+ * //zero dead bytes from alignment to avoid stack leak to userspace:
+ * *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL;
+ * entry = (struct ftrace_raw_<call> *)raw_data;
+ * ent = &entry->ent;
+ * tracing_generic_entry_update(ent, irq_flags, pc);
+ * ent->type = event_call->id;
*
- * <tstruct> <- do some jobs with dynamic arrays
+ * <tstruct> <- do some jobs with dynamic arrays
*
- * <assign> <- affect our values
+ * <assign> <- affect our values
*
- * perf_tpcounter_event(event_call->id, __addr, __count, entry,
- * __entry_size); <- submit them to perf counter
- * } while (0);
+ * perf_tpcounter_event(event_call->id, __addr, __count, entry,
+ * __entry_size); <- submit them to perf counter
*
* }
*/
@@ -716,11 +714,13 @@ static void ftrace_profile_##call(proto) \
struct ftrace_raw_##call *entry; \
u64 __addr = 0, __count = 1; \
unsigned long irq_flags; \
+ struct trace_entry *ent; \
int __entry_size; \
int __data_size; \
+ char *raw_data; \
+ int __cpu; \
int pc; \
\
- local_save_flags(irq_flags); \
pc = preempt_count(); \
\
__data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
@@ -728,23 +728,38 @@ static void ftrace_profile_##call(proto) \
sizeof(u64)); \
__entry_size -= sizeof(u32); \
\
- do { \
- char raw_data[__entry_size]; \
- struct trace_entry *ent; \
+ if (WARN_ONCE(__entry_size > FTRACE_MAX_PROFILE_SIZE, \
+ "profile buffer not large enough")) \
+ return; \
+ \
+ local_irq_save(irq_flags); \
+ __cpu = smp_processor_id(); \
\
- *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL; \
- entry = (struct ftrace_raw_##call *)raw_data; \
- ent = &entry->ent; \
- tracing_generic_entry_update(ent, irq_flags, pc); \
- ent->type = event_call->id; \
+ if (in_nmi()) \
+ raw_data = rcu_dereference(trace_profile_buf_nmi); \
+ else \
+ raw_data = rcu_dereference(trace_profile_buf); \
\
- tstruct \
+ if (!raw_data) \
+ goto end; \
\
- { assign; } \
+ raw_data = per_cpu_ptr(raw_data, __cpu); \
\
- perf_tpcounter_event(event_call->id, __addr, __count, entry,\
+ *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL; \
+ entry = (struct ftrace_raw_##call *)raw_data; \
+ ent = &entry->ent; \
+ tracing_generic_entry_update(ent, irq_flags, pc); \
+ ent->type = event_call->id; \
+ \
+ tstruct \
+ \
+ { assign; } \
+ \
+ perf_tpcounter_event(event_call->id, __addr, __count, entry, \
__entry_size); \
- } while (0); \
+ \
+end: \
+ local_irq_restore(irq_flags); \
\
}
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