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f2fs: add tracepoints for GC threads

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Add tracepoints for tracing the garbage collector
threads in f2fs with status of collection & type.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
[Jaegeuk: modify slightly to show information]
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Namjae Jeon 2013-04-23 16:42:53 +09:00 committed by Jaegeuk Kim
parent 848753aa3b
commit 8e46b3ed11
2 changed files with 80 additions and 0 deletions
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5
fs/f2fs/gc.c
View file

@ -23,6 +23,7 @@
#include "node.h"
#include "segment.h"
#include "gc.h"
#include <trace/events/f2fs.h>
static struct kmem_cache *winode_slab;
@ -301,6 +302,10 @@ static int get_victim_by_default(struct f2fs_sb_info *sbi,
set_bit(secno, dirty_i->victim_secmap);
}
*result = (p.min_segno / p.ofs_unit) * p.ofs_unit;
trace_f2fs_get_victim(sbi->sb, type, gc_type, &p,
sbi->cur_victim_sec,
prefree_segments(sbi), free_segments(sbi));
}
mutex_unlock(&dirty_i->seglist_lock);

75
include/trace/events/f2fs.h
View file

@ -18,6 +18,33 @@
{ WRITE_FLUSH, "WRITE_FLUSH" }, \
{ WRITE_FUA, "WRITE_FUA" })
#define show_data_type(type) \
__print_symbolic(type, \
{ CURSEG_HOT_DATA, "Hot DATA" }, \
{ CURSEG_WARM_DATA, "Warm DATA" }, \
{ CURSEG_COLD_DATA, "Cold DATA" }, \
{ CURSEG_HOT_NODE, "Hot NODE" }, \
{ CURSEG_WARM_NODE, "Warm NODE" }, \
{ CURSEG_COLD_NODE, "Cold NODE" }, \
{ NO_CHECK_TYPE, "No TYPE" })
#define show_gc_type(type) \
__print_symbolic(type, \
{ FG_GC, "Foreground GC" }, \
{ BG_GC, "Background GC" })
#define show_alloc_mode(type) \
__print_symbolic(type, \
{ LFS, "LFS-mode" }, \
{ SSR, "SSR-mode" })
#define show_victim_policy(type) \
__print_symbolic(type, \
{ GC_GREEDY, "Greedy" }, \
{ GC_CB, "Cost-Benefit" })
struct victim_sel_policy;
DECLARE_EVENT_CLASS(f2fs__inode,
TP_PROTO(struct inode *inode),
@ -439,6 +466,54 @@ TRACE_EVENT(f2fs_get_data_block,
__entry->ret)
);
TRACE_EVENT(f2fs_get_victim,
TP_PROTO(struct super_block *sb, int type, int gc_type,
struct victim_sel_policy *p, unsigned int pre_victim,
unsigned int prefree, unsigned int free),
TP_ARGS(sb, type, gc_type, p, pre_victim, prefree, free),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(int, type)
__field(int, gc_type)
__field(int, alloc_mode)
__field(int, gc_mode)
__field(unsigned int, victim)
__field(unsigned int, ofs_unit)
__field(unsigned int, pre_victim)
__field(unsigned int, prefree)
__field(unsigned int, free)
),
TP_fast_assign(
__entry->dev = sb->s_dev;
__entry->type = type;
__entry->gc_type = gc_type;
__entry->alloc_mode = p->alloc_mode;
__entry->gc_mode = p->gc_mode;
__entry->victim = p->min_segno;
__entry->ofs_unit = p->ofs_unit;
__entry->pre_victim = pre_victim;
__entry->prefree = prefree;
__entry->free = free;
),
TP_printk("dev = (%d,%d), type = %s, policy = (%s, %s, %s), victim = %u "
"ofs_unit = %u, pre_victim_secno = %d, prefree = %u, free = %u",
show_dev(__entry),
show_data_type(__entry->type),
show_gc_type(__entry->gc_type),
show_alloc_mode(__entry->alloc_mode),
show_victim_policy(__entry->gc_mode),
__entry->victim,
__entry->ofs_unit,
(int)__entry->pre_victim,
__entry->prefree,
__entry->free)
);
#endif /* _TRACE_F2FS_H */
/* This part must be outside protection */