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authorSteven Whitehouse <swhiteho@redhat.com>2009-06-12 03:49:20 -0400
committerSteven Whitehouse <swhiteho@redhat.com>2009-06-12 03:49:20 -0400
commit63997775b795f97ef51f3e56bc3abc9edc04bbb0 (patch)
tree607519910f92b1101fbe0223c301c503001bc0ef /fs/gfs2
parent8ebf975608aaebd7feb33d77f07ba21a6380e086 (diff)
GFS2: Add tracepoints
This patch adds the ability to trace various aspects of the GFS2 filesystem. The trace points are divided into three groups, glocks, logging and bmap. These points have been chosen because they allow inspection of the major internal functions of GFS2 and they are also generic enough that they are unlikely to need any major changes as the filesystem evolves. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/Makefile1
-rw-r--r--fs/gfs2/bmap.c3
-rw-r--r--fs/gfs2/glock.c12
-rw-r--r--fs/gfs2/log.c9
-rw-r--r--fs/gfs2/lops.c3
-rw-r--r--fs/gfs2/ops_fstype.c2
-rw-r--r--fs/gfs2/rgrp.c11
-rw-r--r--fs/gfs2/trace_gfs2.h407
8 files changed, 442 insertions, 6 deletions
diff --git a/fs/gfs2/Makefile b/fs/gfs2/Makefile
index d53a9bea1c2f..3da2f1f4f738 100644
--- a/fs/gfs2/Makefile
+++ b/fs/gfs2/Makefile
@@ -1,3 +1,4 @@
1EXTRA_CFLAGS := -I$(src)
1obj-$(CONFIG_GFS2_FS) += gfs2.o 2obj-$(CONFIG_GFS2_FS) += gfs2.o
2gfs2-y := acl.o bmap.o dir.o eaops.o eattr.o glock.o \ 3gfs2-y := acl.o bmap.o dir.o eaops.o eattr.o glock.o \
3 glops.o inode.o log.o lops.o main.o meta_io.o \ 4 glops.o inode.o log.o lops.o main.o meta_io.o \
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 329763530dc0..6d47379e794b 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -25,6 +25,7 @@
25#include "trans.h" 25#include "trans.h"
26#include "dir.h" 26#include "dir.h"
27#include "util.h" 27#include "util.h"
28#include "trace_gfs2.h"
28 29
29/* This doesn't need to be that large as max 64 bit pointers in a 4k 30/* This doesn't need to be that large as max 64 bit pointers in a 4k
30 * block is 512, so __u16 is fine for that. It saves stack space to 31 * block is 512, so __u16 is fine for that. It saves stack space to
@@ -589,6 +590,7 @@ int gfs2_block_map(struct inode *inode, sector_t lblock,
589 clear_buffer_mapped(bh_map); 590 clear_buffer_mapped(bh_map);
590 clear_buffer_new(bh_map); 591 clear_buffer_new(bh_map);
591 clear_buffer_boundary(bh_map); 592 clear_buffer_boundary(bh_map);
593 trace_gfs2_bmap(ip, bh_map, lblock, create, 1);
592 if (gfs2_is_dir(ip)) { 594 if (gfs2_is_dir(ip)) {
593 bsize = sdp->sd_jbsize; 595 bsize = sdp->sd_jbsize;
594 arr = sdp->sd_jheightsize; 596 arr = sdp->sd_jheightsize;
@@ -623,6 +625,7 @@ int gfs2_block_map(struct inode *inode, sector_t lblock,
623 ret = 0; 625 ret = 0;
624out: 626out:
625 release_metapath(&mp); 627 release_metapath(&mp);
628 trace_gfs2_bmap(ip, bh_map, lblock, create, ret);
626 bmap_unlock(ip, create); 629 bmap_unlock(ip, create);
627 return ret; 630 return ret;
628 631
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 2bf62bcc5181..297421c0427a 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -39,6 +39,8 @@
39#include "super.h" 39#include "super.h"
40#include "util.h" 40#include "util.h"
41#include "bmap.h" 41#include "bmap.h"
42#define CREATE_TRACE_POINTS
43#include "trace_gfs2.h"
42 44
43struct gfs2_gl_hash_bucket { 45struct gfs2_gl_hash_bucket {
44 struct hlist_head hb_list; 46 struct hlist_head hb_list;
@@ -155,7 +157,7 @@ static void glock_free(struct gfs2_glock *gl)
155 157
156 if (aspace) 158 if (aspace)
157 gfs2_aspace_put(aspace); 159 gfs2_aspace_put(aspace);
158 160 trace_gfs2_glock_put(gl);
159 sdp->sd_lockstruct.ls_ops->lm_put_lock(gfs2_glock_cachep, gl); 161 sdp->sd_lockstruct.ls_ops->lm_put_lock(gfs2_glock_cachep, gl);
160} 162}
161 163
@@ -317,14 +319,17 @@ restart:
317 return 2; 319 return 2;
318 gh->gh_error = ret; 320 gh->gh_error = ret;
319 list_del_init(&gh->gh_list); 321 list_del_init(&gh->gh_list);
322 trace_gfs2_glock_queue(gh, 0);
320 gfs2_holder_wake(gh); 323 gfs2_holder_wake(gh);
321 goto restart; 324 goto restart;
322 } 325 }
323 set_bit(HIF_HOLDER, &gh->gh_iflags); 326 set_bit(HIF_HOLDER, &gh->gh_iflags);
327 trace_gfs2_promote(gh, 1);
324 gfs2_holder_wake(gh); 328 gfs2_holder_wake(gh);
325 goto restart; 329 goto restart;
326 } 330 }
327 set_bit(HIF_HOLDER, &gh->gh_iflags); 331 set_bit(HIF_HOLDER, &gh->gh_iflags);
332 trace_gfs2_promote(gh, 0);
328 gfs2_holder_wake(gh); 333 gfs2_holder_wake(gh);
329 continue; 334 continue;
330 } 335 }
@@ -354,6 +359,7 @@ static inline void do_error(struct gfs2_glock *gl, const int ret)
354 else 359 else
355 continue; 360 continue;
356 list_del_init(&gh->gh_list); 361 list_del_init(&gh->gh_list);
362 trace_gfs2_glock_queue(gh, 0);
357 gfs2_holder_wake(gh); 363 gfs2_holder_wake(gh);
358 } 364 }
359} 365}
@@ -422,6 +428,7 @@ static void finish_xmote(struct gfs2_glock *gl, unsigned int ret)
422 int rv; 428 int rv;
423 429
424 spin_lock(&gl->gl_spin); 430 spin_lock(&gl->gl_spin);
431 trace_gfs2_glock_state_change(gl, state);
425 state_change(gl, state); 432 state_change(gl, state);
426 gh = find_first_waiter(gl); 433 gh = find_first_waiter(gl);
427 434
@@ -851,6 +858,7 @@ static void handle_callback(struct gfs2_glock *gl, unsigned int state,
851 gl->gl_demote_state != state) { 858 gl->gl_demote_state != state) {
852 gl->gl_demote_state = LM_ST_UNLOCKED; 859 gl->gl_demote_state = LM_ST_UNLOCKED;
853 } 860 }
861 trace_gfs2_demote_rq(gl);
854} 862}
855 863
856/** 864/**
@@ -936,6 +944,7 @@ fail:
936 goto do_cancel; 944 goto do_cancel;
937 return; 945 return;
938 } 946 }
947 trace_gfs2_glock_queue(gh, 1);
939 list_add_tail(&gh->gh_list, insert_pt); 948 list_add_tail(&gh->gh_list, insert_pt);
940do_cancel: 949do_cancel:
941 gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list); 950 gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
@@ -1032,6 +1041,7 @@ void gfs2_glock_dq(struct gfs2_holder *gh)
1032 !test_bit(GLF_DEMOTE, &gl->gl_flags)) 1041 !test_bit(GLF_DEMOTE, &gl->gl_flags))
1033 fast_path = 1; 1042 fast_path = 1;
1034 } 1043 }
1044 trace_gfs2_glock_queue(gh, 0);
1035 spin_unlock(&gl->gl_spin); 1045 spin_unlock(&gl->gl_spin);
1036 if (likely(fast_path)) 1046 if (likely(fast_path))
1037 return; 1047 return;
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index f2e449c595b4..13c6237c5f67 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -28,6 +28,7 @@
28#include "meta_io.h" 28#include "meta_io.h"
29#include "util.h" 29#include "util.h"
30#include "dir.h" 30#include "dir.h"
31#include "trace_gfs2.h"
31 32
32#define PULL 1 33#define PULL 1
33 34
@@ -313,6 +314,7 @@ int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks)
313 gfs2_log_lock(sdp); 314 gfs2_log_lock(sdp);
314 } 315 }
315 atomic_sub(blks, &sdp->sd_log_blks_free); 316 atomic_sub(blks, &sdp->sd_log_blks_free);
317 trace_gfs2_log_blocks(sdp, -blks);
316 gfs2_log_unlock(sdp); 318 gfs2_log_unlock(sdp);
317 mutex_unlock(&sdp->sd_log_reserve_mutex); 319 mutex_unlock(&sdp->sd_log_reserve_mutex);
318 320
@@ -333,6 +335,7 @@ void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks)
333 335
334 gfs2_log_lock(sdp); 336 gfs2_log_lock(sdp);
335 atomic_add(blks, &sdp->sd_log_blks_free); 337 atomic_add(blks, &sdp->sd_log_blks_free);
338 trace_gfs2_log_blocks(sdp, blks);
336 gfs2_assert_withdraw(sdp, 339 gfs2_assert_withdraw(sdp,
337 atomic_read(&sdp->sd_log_blks_free) <= sdp->sd_jdesc->jd_blocks); 340 atomic_read(&sdp->sd_log_blks_free) <= sdp->sd_jdesc->jd_blocks);
338 gfs2_log_unlock(sdp); 341 gfs2_log_unlock(sdp);
@@ -558,6 +561,7 @@ static void log_pull_tail(struct gfs2_sbd *sdp, unsigned int new_tail)
558 561
559 gfs2_log_lock(sdp); 562 gfs2_log_lock(sdp);
560 atomic_add(dist, &sdp->sd_log_blks_free); 563 atomic_add(dist, &sdp->sd_log_blks_free);
564 trace_gfs2_log_blocks(sdp, dist);
561 gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <= sdp->sd_jdesc->jd_blocks); 565 gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <= sdp->sd_jdesc->jd_blocks);
562 gfs2_log_unlock(sdp); 566 gfs2_log_unlock(sdp);
563 567
@@ -715,6 +719,7 @@ void __gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
715 up_write(&sdp->sd_log_flush_lock); 719 up_write(&sdp->sd_log_flush_lock);
716 return; 720 return;
717 } 721 }
722 trace_gfs2_log_flush(sdp, 1);
718 723
719 ai = kzalloc(sizeof(struct gfs2_ail), GFP_NOFS | __GFP_NOFAIL); 724 ai = kzalloc(sizeof(struct gfs2_ail), GFP_NOFS | __GFP_NOFAIL);
720 INIT_LIST_HEAD(&ai->ai_ail1_list); 725 INIT_LIST_HEAD(&ai->ai_ail1_list);
@@ -746,6 +751,7 @@ void __gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
746 else if (sdp->sd_log_tail != current_tail(sdp) && !sdp->sd_log_idle){ 751 else if (sdp->sd_log_tail != current_tail(sdp) && !sdp->sd_log_idle){
747 gfs2_log_lock(sdp); 752 gfs2_log_lock(sdp);
748 atomic_dec(&sdp->sd_log_blks_free); /* Adjust for unreserved buffer */ 753 atomic_dec(&sdp->sd_log_blks_free); /* Adjust for unreserved buffer */
754 trace_gfs2_log_blocks(sdp, -1);
749 gfs2_log_unlock(sdp); 755 gfs2_log_unlock(sdp);
750 log_write_header(sdp, 0, PULL); 756 log_write_header(sdp, 0, PULL);
751 } 757 }
@@ -763,7 +769,7 @@ void __gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
763 ai = NULL; 769 ai = NULL;
764 } 770 }
765 gfs2_log_unlock(sdp); 771 gfs2_log_unlock(sdp);
766 772 trace_gfs2_log_flush(sdp, 0);
767 up_write(&sdp->sd_log_flush_lock); 773 up_write(&sdp->sd_log_flush_lock);
768 774
769 kfree(ai); 775 kfree(ai);
@@ -787,6 +793,7 @@ static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
787 gfs2_assert_withdraw(sdp, sdp->sd_log_blks_reserved + tr->tr_reserved >= reserved); 793 gfs2_assert_withdraw(sdp, sdp->sd_log_blks_reserved + tr->tr_reserved >= reserved);
788 unused = sdp->sd_log_blks_reserved - reserved + tr->tr_reserved; 794 unused = sdp->sd_log_blks_reserved - reserved + tr->tr_reserved;
789 atomic_add(unused, &sdp->sd_log_blks_free); 795 atomic_add(unused, &sdp->sd_log_blks_free);
796 trace_gfs2_log_blocks(sdp, unused);
790 gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <= 797 gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <=
791 sdp->sd_jdesc->jd_blocks); 798 sdp->sd_jdesc->jd_blocks);
792 sdp->sd_log_blks_reserved = reserved; 799 sdp->sd_log_blks_reserved = reserved;
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index 00315f50fa46..9969ff062c5b 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -27,6 +27,7 @@
27#include "rgrp.h" 27#include "rgrp.h"
28#include "trans.h" 28#include "trans.h"
29#include "util.h" 29#include "util.h"
30#include "trace_gfs2.h"
30 31
31/** 32/**
32 * gfs2_pin - Pin a buffer in memory 33 * gfs2_pin - Pin a buffer in memory
@@ -53,6 +54,7 @@ static void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh)
53 if (bd->bd_ail) 54 if (bd->bd_ail)
54 list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list); 55 list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list);
55 get_bh(bh); 56 get_bh(bh);
57 trace_gfs2_pin(bd, 1);
56} 58}
57 59
58/** 60/**
@@ -89,6 +91,7 @@ static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh,
89 bd->bd_ail = ai; 91 bd->bd_ail = ai;
90 list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list); 92 list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list);
91 clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 93 clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
94 trace_gfs2_pin(bd, 0);
92 gfs2_log_unlock(sdp); 95 gfs2_log_unlock(sdp);
93 unlock_buffer(bh); 96 unlock_buffer(bh);
94} 97}
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index cc34f271b3e7..7bc3c45cd676 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -33,6 +33,7 @@
33#include "log.h" 33#include "log.h"
34#include "quota.h" 34#include "quota.h"
35#include "dir.h" 35#include "dir.h"
36#include "trace_gfs2.h"
36 37
37#define DO 0 38#define DO 0
38#define UNDO 1 39#define UNDO 1
@@ -775,6 +776,7 @@ static int init_journal(struct gfs2_sbd *sdp, int undo)
775 /* Map the extents for this journal's blocks */ 776 /* Map the extents for this journal's blocks */
776 map_journal_extents(sdp); 777 map_journal_extents(sdp);
777 } 778 }
779 trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free));
778 780
779 if (sdp->sd_lockstruct.ls_first) { 781 if (sdp->sd_lockstruct.ls_first) {
780 unsigned int x; 782 unsigned int x;
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index de3239731db8..daa4ae341a29 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -29,6 +29,7 @@
29#include "util.h" 29#include "util.h"
30#include "log.h" 30#include "log.h"
31#include "inode.h" 31#include "inode.h"
32#include "trace_gfs2.h"
32 33
33#define BFITNOENT ((u32)~0) 34#define BFITNOENT ((u32)~0)
34#define NO_BLOCK ((u64)~0) 35#define NO_BLOCK ((u64)~0)
@@ -1519,7 +1520,7 @@ int gfs2_alloc_block(struct gfs2_inode *ip, u64 *bn, unsigned int *n)
1519 spin_lock(&sdp->sd_rindex_spin); 1520 spin_lock(&sdp->sd_rindex_spin);
1520 rgd->rd_free_clone -= *n; 1521 rgd->rd_free_clone -= *n;
1521 spin_unlock(&sdp->sd_rindex_spin); 1522 spin_unlock(&sdp->sd_rindex_spin);
1522 1523 trace_gfs2_block_alloc(ip, block, *n, GFS2_BLKST_USED);
1523 *bn = block; 1524 *bn = block;
1524 return 0; 1525 return 0;
1525 1526
@@ -1571,7 +1572,7 @@ u64 gfs2_alloc_di(struct gfs2_inode *dip, u64 *generation)
1571 spin_lock(&sdp->sd_rindex_spin); 1572 spin_lock(&sdp->sd_rindex_spin);
1572 rgd->rd_free_clone--; 1573 rgd->rd_free_clone--;
1573 spin_unlock(&sdp->sd_rindex_spin); 1574 spin_unlock(&sdp->sd_rindex_spin);
1574 1575 trace_gfs2_block_alloc(dip, block, 1, GFS2_BLKST_DINODE);
1575 return block; 1576 return block;
1576} 1577}
1577 1578
@@ -1591,7 +1592,7 @@ void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen)
1591 rgd = rgblk_free(sdp, bstart, blen, GFS2_BLKST_FREE); 1592 rgd = rgblk_free(sdp, bstart, blen, GFS2_BLKST_FREE);
1592 if (!rgd) 1593 if (!rgd)
1593 return; 1594 return;
1594 1595 trace_gfs2_block_alloc(ip, bstart, blen, GFS2_BLKST_FREE);
1595 rgd->rd_free += blen; 1596 rgd->rd_free += blen;
1596 1597
1597 gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1); 1598 gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
@@ -1619,7 +1620,7 @@ void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen)
1619 rgd = rgblk_free(sdp, bstart, blen, GFS2_BLKST_FREE); 1620 rgd = rgblk_free(sdp, bstart, blen, GFS2_BLKST_FREE);
1620 if (!rgd) 1621 if (!rgd)
1621 return; 1622 return;
1622 1623 trace_gfs2_block_alloc(ip, bstart, blen, GFS2_BLKST_FREE);
1623 rgd->rd_free += blen; 1624 rgd->rd_free += blen;
1624 1625
1625 gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1); 1626 gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
@@ -1642,6 +1643,7 @@ void gfs2_unlink_di(struct inode *inode)
1642 rgd = rgblk_free(sdp, blkno, 1, GFS2_BLKST_UNLINKED); 1643 rgd = rgblk_free(sdp, blkno, 1, GFS2_BLKST_UNLINKED);
1643 if (!rgd) 1644 if (!rgd)
1644 return; 1645 return;
1646 trace_gfs2_block_alloc(ip, blkno, 1, GFS2_BLKST_UNLINKED);
1645 gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1); 1647 gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
1646 gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data); 1648 gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
1647 gfs2_trans_add_rg(rgd); 1649 gfs2_trans_add_rg(rgd);
@@ -1673,6 +1675,7 @@ static void gfs2_free_uninit_di(struct gfs2_rgrpd *rgd, u64 blkno)
1673void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip) 1675void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip)
1674{ 1676{
1675 gfs2_free_uninit_di(rgd, ip->i_no_addr); 1677 gfs2_free_uninit_di(rgd, ip->i_no_addr);
1678 trace_gfs2_block_alloc(ip, ip->i_no_addr, 1, GFS2_BLKST_FREE);
1676 gfs2_quota_change(ip, -1, ip->i_inode.i_uid, ip->i_inode.i_gid); 1679 gfs2_quota_change(ip, -1, ip->i_inode.i_uid, ip->i_inode.i_gid);
1677 gfs2_meta_wipe(ip, ip->i_no_addr, 1); 1680 gfs2_meta_wipe(ip, ip->i_no_addr, 1);
1678} 1681}
diff --git a/fs/gfs2/trace_gfs2.h b/fs/gfs2/trace_gfs2.h
new file mode 100644
index 000000000000..98d6ef1c1dc0
--- /dev/null
+++ b/fs/gfs2/trace_gfs2.h
@@ -0,0 +1,407 @@
1#if !defined(_TRACE_GFS2_H) || defined(TRACE_HEADER_MULTI_READ)
2#define _TRACE_GFS2_H
3
4#include <linux/tracepoint.h>
5
6#undef TRACE_SYSTEM
7#define TRACE_SYSTEM gfs2
8#define TRACE_INCLUDE_FILE trace_gfs2
9
10#include <linux/fs.h>
11#include <linux/buffer_head.h>
12#include <linux/dlmconstants.h>
13#include <linux/gfs2_ondisk.h>
14#include "incore.h"
15#include "glock.h"
16
17#define dlm_state_name(nn) { DLM_LOCK_##nn, #nn }
18#define glock_trace_name(x) __print_symbolic(x, \
19 dlm_state_name(IV), \
20 dlm_state_name(NL), \
21 dlm_state_name(CR), \
22 dlm_state_name(CW), \
23 dlm_state_name(PR), \
24 dlm_state_name(PW), \
25 dlm_state_name(EX))
26
27#define block_state_name(x) __print_symbolic(x, \
28 { GFS2_BLKST_FREE, "free" }, \
29 { GFS2_BLKST_USED, "used" }, \
30 { GFS2_BLKST_DINODE, "dinode" }, \
31 { GFS2_BLKST_UNLINKED, "unlinked" })
32
33#define show_glock_flags(flags) __print_flags(flags, "", \
34 {(1UL << GLF_LOCK), "l" }, \
35 {(1UL << GLF_DEMOTE), "D" }, \
36 {(1UL << GLF_PENDING_DEMOTE), "d" }, \
37 {(1UL << GLF_DEMOTE_IN_PROGRESS), "p" }, \
38 {(1UL << GLF_DIRTY), "y" }, \
39 {(1UL << GLF_LFLUSH), "f" }, \
40 {(1UL << GLF_INVALIDATE_IN_PROGRESS), "i" }, \
41 {(1UL << GLF_REPLY_PENDING), "r" }, \
42 {(1UL << GLF_INITIAL), "I" }, \
43 {(1UL << GLF_FROZEN), "F" })
44
45#ifndef NUMPTY
46#define NUMPTY
47static inline u8 glock_trace_state(unsigned int state)
48{
49 switch(state) {
50 case LM_ST_SHARED:
51 return DLM_LOCK_PR;
52 case LM_ST_DEFERRED:
53 return DLM_LOCK_CW;
54 case LM_ST_EXCLUSIVE:
55 return DLM_LOCK_EX;
56 }
57 return DLM_LOCK_NL;
58}
59#endif
60
61/* Section 1 - Locking
62 *
63 * Objectives:
64 * Latency: Remote demote request to state change
65 * Latency: Local lock request to state change
66 * Latency: State change to lock grant
67 * Correctness: Ordering of local lock state vs. I/O requests
68 * Correctness: Responses to remote demote requests
69 */
70
71/* General glock state change (DLM lock request completes) */
72TRACE_EVENT(gfs2_glock_state_change,
73
74 TP_PROTO(const struct gfs2_glock *gl, unsigned int new_state),
75
76 TP_ARGS(gl, new_state),
77
78 TP_STRUCT__entry(
79 __field( dev_t, dev )
80 __field( u64, glnum )
81 __field( u32, gltype )
82 __field( u8, cur_state )
83 __field( u8, new_state )
84 __field( u8, dmt_state )
85 __field( u8, tgt_state )
86 __field( unsigned long, flags )
87 ),
88
89 TP_fast_assign(
90 __entry->dev = gl->gl_sbd->sd_vfs->s_dev;
91 __entry->glnum = gl->gl_name.ln_number;
92 __entry->gltype = gl->gl_name.ln_type;
93 __entry->cur_state = glock_trace_state(gl->gl_state);
94 __entry->new_state = glock_trace_state(new_state);
95 __entry->tgt_state = glock_trace_state(gl->gl_target);
96 __entry->dmt_state = glock_trace_state(gl->gl_demote_state);
97 __entry->flags = gl->gl_flags;
98 ),
99
100 TP_printk("%u,%u glock %d:%lld state %s to %s tgt:%s dmt:%s flags:%s",
101 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
102 (unsigned long long)__entry->glnum,
103 glock_trace_name(__entry->cur_state),
104 glock_trace_name(__entry->new_state),
105 glock_trace_name(__entry->tgt_state),
106 glock_trace_name(__entry->dmt_state),
107 show_glock_flags(__entry->flags))
108);
109
110/* State change -> unlocked, glock is being deallocated */
111TRACE_EVENT(gfs2_glock_put,
112
113 TP_PROTO(const struct gfs2_glock *gl),
114
115 TP_ARGS(gl),
116
117 TP_STRUCT__entry(
118 __field( dev_t, dev )
119 __field( u64, glnum )
120 __field( u32, gltype )
121 __field( u8, cur_state )
122 __field( unsigned long, flags )
123 ),
124
125 TP_fast_assign(
126 __entry->dev = gl->gl_sbd->sd_vfs->s_dev;
127 __entry->gltype = gl->gl_name.ln_type;
128 __entry->glnum = gl->gl_name.ln_number;
129 __entry->cur_state = glock_trace_state(gl->gl_state);
130 __entry->flags = gl->gl_flags;
131 ),
132
133 TP_printk("%u,%u glock %d:%lld state %s => %s flags:%s",
134 MAJOR(__entry->dev), MINOR(__entry->dev),
135 __entry->gltype, (unsigned long long)__entry->glnum,
136 glock_trace_name(__entry->cur_state),
137 glock_trace_name(DLM_LOCK_IV),
138 show_glock_flags(__entry->flags))
139
140);
141
142/* Callback (local or remote) requesting lock demotion */
143TRACE_EVENT(gfs2_demote_rq,
144
145 TP_PROTO(const struct gfs2_glock *gl),
146
147 TP_ARGS(gl),
148
149 TP_STRUCT__entry(
150 __field( dev_t, dev )
151 __field( u64, glnum )
152 __field( u32, gltype )
153 __field( u8, cur_state )
154 __field( u8, dmt_state )
155 __field( unsigned long, flags )
156 ),
157
158 TP_fast_assign(
159 __entry->dev = gl->gl_sbd->sd_vfs->s_dev;
160 __entry->gltype = gl->gl_name.ln_type;
161 __entry->glnum = gl->gl_name.ln_number;
162 __entry->cur_state = glock_trace_state(gl->gl_state);
163 __entry->dmt_state = glock_trace_state(gl->gl_demote_state);
164 __entry->flags = gl->gl_flags;
165 ),
166
167 TP_printk("%u,%u glock %d:%lld demote %s to %s flags:%s",
168 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
169 (unsigned long long)__entry->glnum,
170 glock_trace_name(__entry->cur_state),
171 glock_trace_name(__entry->dmt_state),
172 show_glock_flags(__entry->flags))
173
174);
175
176/* Promotion/grant of a glock */
177TRACE_EVENT(gfs2_promote,
178
179 TP_PROTO(const struct gfs2_holder *gh, int first),
180
181 TP_ARGS(gh, first),
182
183 TP_STRUCT__entry(
184 __field( dev_t, dev )
185 __field( u64, glnum )
186 __field( u32, gltype )
187 __field( int, first )
188 __field( u8, state )
189 ),
190
191 TP_fast_assign(
192 __entry->dev = gh->gh_gl->gl_sbd->sd_vfs->s_dev;
193 __entry->glnum = gh->gh_gl->gl_name.ln_number;
194 __entry->gltype = gh->gh_gl->gl_name.ln_type;
195 __entry->first = first;
196 __entry->state = glock_trace_state(gh->gh_state);
197 ),
198
199 TP_printk("%u,%u glock %u:%llu promote %s %s",
200 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
201 (unsigned long long)__entry->glnum,
202 __entry->first ? "first": "other",
203 glock_trace_name(__entry->state))
204);
205
206/* Queue/dequeue a lock request */
207TRACE_EVENT(gfs2_glock_queue,
208
209 TP_PROTO(const struct gfs2_holder *gh, int queue),
210
211 TP_ARGS(gh, queue),
212
213 TP_STRUCT__entry(
214 __field( dev_t, dev )
215 __field( u64, glnum )
216 __field( u32, gltype )
217 __field( int, queue )
218 __field( u8, state )
219 ),
220
221 TP_fast_assign(
222 __entry->dev = gh->gh_gl->gl_sbd->sd_vfs->s_dev;
223 __entry->glnum = gh->gh_gl->gl_name.ln_number;
224 __entry->gltype = gh->gh_gl->gl_name.ln_type;
225 __entry->queue = queue;
226 __entry->state = glock_trace_state(gh->gh_state);
227 ),
228
229 TP_printk("%u,%u glock %u:%llu %squeue %s",
230 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
231 (unsigned long long)__entry->glnum,
232 __entry->queue ? "" : "de",
233 glock_trace_name(__entry->state))
234);
235
236/* Section 2 - Log/journal
237 *
238 * Objectives:
239 * Latency: Log flush time
240 * Correctness: pin/unpin vs. disk I/O ordering
241 * Performance: Log usage stats
242 */
243
244/* Pin/unpin a block in the log */
245TRACE_EVENT(gfs2_pin,
246
247 TP_PROTO(const struct gfs2_bufdata *bd, int pin),
248
249 TP_ARGS(bd, pin),
250
251 TP_STRUCT__entry(
252 __field( dev_t, dev )
253 __field( int, pin )
254 __field( u32, len )
255 __field( sector_t, block )
256 __field( u64, ino )
257 ),
258
259 TP_fast_assign(
260 __entry->dev = bd->bd_gl->gl_sbd->sd_vfs->s_dev;
261 __entry->pin = pin;
262 __entry->len = bd->bd_bh->b_size;
263 __entry->block = bd->bd_bh->b_blocknr;
264 __entry->ino = bd->bd_gl->gl_name.ln_number;
265 ),
266
267 TP_printk("%u,%u log %s %llu/%lu inode %llu",
268 MAJOR(__entry->dev), MINOR(__entry->dev),
269 __entry->pin ? "pin" : "unpin",
270 (unsigned long long)__entry->block,
271 (unsigned long)__entry->len,
272 (unsigned long long)__entry->ino)
273);
274
275/* Flushing the log */
276TRACE_EVENT(gfs2_log_flush,
277
278 TP_PROTO(const struct gfs2_sbd *sdp, int start),
279
280 TP_ARGS(sdp, start),
281
282 TP_STRUCT__entry(
283 __field( dev_t, dev )
284 __field( int, start )
285 __field( u64, log_seq )
286 ),
287
288 TP_fast_assign(
289 __entry->dev = sdp->sd_vfs->s_dev;
290 __entry->start = start;
291 __entry->log_seq = sdp->sd_log_sequence;
292 ),
293
294 TP_printk("%u,%u log flush %s %llu",
295 MAJOR(__entry->dev), MINOR(__entry->dev),
296 __entry->start ? "start" : "end",
297 (unsigned long long)__entry->log_seq)
298);
299
300/* Reserving/releasing blocks in the log */
301TRACE_EVENT(gfs2_log_blocks,
302
303 TP_PROTO(const struct gfs2_sbd *sdp, int blocks),
304
305 TP_ARGS(sdp, blocks),
306
307 TP_STRUCT__entry(
308 __field( dev_t, dev )
309 __field( int, blocks )
310 ),
311
312 TP_fast_assign(
313 __entry->dev = sdp->sd_vfs->s_dev;
314 __entry->blocks = blocks;
315 ),
316
317 TP_printk("%u,%u log reserve %d", MAJOR(__entry->dev),
318 MINOR(__entry->dev), __entry->blocks)
319);
320
321/* Section 3 - bmap
322 *
323 * Objectives:
324 * Latency: Bmap request time
325 * Performance: Block allocator tracing
326 * Correctness: Test of disard generation vs. blocks allocated
327 */
328
329/* Map an extent of blocks, possibly a new allocation */
330TRACE_EVENT(gfs2_bmap,
331
332 TP_PROTO(const struct gfs2_inode *ip, const struct buffer_head *bh,
333 sector_t lblock, int create, int errno),
334
335 TP_ARGS(ip, bh, lblock, create, errno),
336
337 TP_STRUCT__entry(
338 __field( dev_t, dev )
339 __field( sector_t, lblock )
340 __field( sector_t, pblock )
341 __field( u64, inum )
342 __field( unsigned long, state )
343 __field( u32, len )
344 __field( int, create )
345 __field( int, errno )
346 ),
347
348 TP_fast_assign(
349 __entry->dev = ip->i_gl->gl_sbd->sd_vfs->s_dev;
350 __entry->lblock = lblock;
351 __entry->pblock = buffer_mapped(bh) ? bh->b_blocknr : 0;
352 __entry->inum = ip->i_no_addr;
353 __entry->state = bh->b_state;
354 __entry->len = bh->b_size;
355 __entry->create = create;
356 __entry->errno = errno;
357 ),
358
359 TP_printk("%u,%u bmap %llu map %llu/%lu to %llu flags:%08lx %s %d",
360 MAJOR(__entry->dev), MINOR(__entry->dev),
361 (unsigned long long)__entry->inum,
362 (unsigned long long)__entry->lblock,
363 (unsigned long)__entry->len,
364 (unsigned long long)__entry->pblock,
365 __entry->state, __entry->create ? "create " : "nocreate",
366 __entry->errno)
367);
368
369/* Keep track of blocks as they are allocated/freed */
370TRACE_EVENT(gfs2_block_alloc,
371
372 TP_PROTO(const struct gfs2_inode *ip, u64 block, unsigned len,
373 u8 block_state),
374
375 TP_ARGS(ip, block, len, block_state),
376
377 TP_STRUCT__entry(
378 __field( dev_t, dev )
379 __field( u64, start )
380 __field( u64, inum )
381 __field( u32, len )
382 __field( u8, block_state )
383 ),
384
385 TP_fast_assign(
386 __entry->dev = ip->i_gl->gl_sbd->sd_vfs->s_dev;
387 __entry->start = block;
388 __entry->inum = ip->i_no_addr;
389 __entry->len = len;
390 __entry->block_state = block_state;
391 ),
392
393 TP_printk("%u,%u bmap %llu alloc %llu/%lu %s",
394 MAJOR(__entry->dev), MINOR(__entry->dev),
395 (unsigned long long)__entry->inum,
396 (unsigned long long)__entry->start,
397 (unsigned long)__entry->len,
398 block_state_name(__entry->block_state))
399);
400
401#endif /* _TRACE_GFS2_H */
402
403/* This part must be outside protection */
404#undef TRACE_INCLUDE_PATH
405#define TRACE_INCLUDE_PATH .
406#include <trace/define_trace.h>
407
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-24 21:38:19 -0400