diff options
Diffstat (limited to 'include/trace')
-rw-r--r-- | include/trace/events/block.h | 4 | ||||
-rw-r--r-- | include/trace/events/ext4.h | 142 | ||||
-rw-r--r-- | include/trace/events/irq.h | 21 | ||||
-rw-r--r-- | include/trace/events/jbd2.h | 2 | ||||
-rw-r--r-- | include/trace/events/power.h | 81 | ||||
-rw-r--r-- | include/trace/events/sched.h | 33 | ||||
-rw-r--r-- | include/trace/ftrace.h | 119 |
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); \ \ } |