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f2fs: add tracepoints for GC threads
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>
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2 changed files with 80 additions and 0 deletions
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@ -23,6 +23,7 @@
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#include "node.h"
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#include "segment.h"
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#include "gc.h"
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#include <trace/events/f2fs.h>
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static struct kmem_cache *winode_slab;
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@ -301,6 +302,10 @@ static int get_victim_by_default(struct f2fs_sb_info *sbi,
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set_bit(secno, dirty_i->victim_secmap);
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}
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*result = (p.min_segno / p.ofs_unit) * p.ofs_unit;
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trace_f2fs_get_victim(sbi->sb, type, gc_type, &p,
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sbi->cur_victim_sec,
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prefree_segments(sbi), free_segments(sbi));
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}
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mutex_unlock(&dirty_i->seglist_lock);
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@ -18,6 +18,33 @@
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{ WRITE_FLUSH, "WRITE_FLUSH" }, \
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{ WRITE_FUA, "WRITE_FUA" })
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#define show_data_type(type) \
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__print_symbolic(type, \
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{ CURSEG_HOT_DATA, "Hot DATA" }, \
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{ CURSEG_WARM_DATA, "Warm DATA" }, \
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{ CURSEG_COLD_DATA, "Cold DATA" }, \
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{ CURSEG_HOT_NODE, "Hot NODE" }, \
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{ CURSEG_WARM_NODE, "Warm NODE" }, \
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{ CURSEG_COLD_NODE, "Cold NODE" }, \
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{ NO_CHECK_TYPE, "No TYPE" })
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#define show_gc_type(type) \
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__print_symbolic(type, \
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{ FG_GC, "Foreground GC" }, \
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{ BG_GC, "Background GC" })
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#define show_alloc_mode(type) \
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__print_symbolic(type, \
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{ LFS, "LFS-mode" }, \
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{ SSR, "SSR-mode" })
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#define show_victim_policy(type) \
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__print_symbolic(type, \
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{ GC_GREEDY, "Greedy" }, \
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{ GC_CB, "Cost-Benefit" })
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struct victim_sel_policy;
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DECLARE_EVENT_CLASS(f2fs__inode,
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TP_PROTO(struct inode *inode),
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@ -439,6 +466,54 @@ TRACE_EVENT(f2fs_get_data_block,
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__entry->ret)
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);
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TRACE_EVENT(f2fs_get_victim,
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TP_PROTO(struct super_block *sb, int type, int gc_type,
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struct victim_sel_policy *p, unsigned int pre_victim,
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unsigned int prefree, unsigned int free),
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TP_ARGS(sb, type, gc_type, p, pre_victim, prefree, free),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(int, type)
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__field(int, gc_type)
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__field(int, alloc_mode)
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__field(int, gc_mode)
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__field(unsigned int, victim)
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__field(unsigned int, ofs_unit)
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__field(unsigned int, pre_victim)
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__field(unsigned int, prefree)
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__field(unsigned int, free)
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),
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TP_fast_assign(
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__entry->dev = sb->s_dev;
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__entry->type = type;
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__entry->gc_type = gc_type;
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__entry->alloc_mode = p->alloc_mode;
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__entry->gc_mode = p->gc_mode;
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__entry->victim = p->min_segno;
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__entry->ofs_unit = p->ofs_unit;
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__entry->pre_victim = pre_victim;
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__entry->prefree = prefree;
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__entry->free = free;
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),
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TP_printk("dev = (%d,%d), type = %s, policy = (%s, %s, %s), victim = %u "
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"ofs_unit = %u, pre_victim_secno = %d, prefree = %u, free = %u",
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show_dev(__entry),
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show_data_type(__entry->type),
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show_gc_type(__entry->gc_type),
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show_alloc_mode(__entry->alloc_mode),
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show_victim_policy(__entry->gc_mode),
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__entry->victim,
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__entry->ofs_unit,
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(int)__entry->pre_victim,
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__entry->prefree,
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__entry->free)
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);
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#endif /* _TRACE_F2FS_H */
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/* This part must be outside protection */
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