4d207133e9
None of these statistics can meaningfully be negative, and the
numerator for do_div() must have the type u64. The generic
implementation of do_div() used on some 32-bit architectures asserts
that, resulting in a compiler error in gfs2_rgrp_congested().
Fixes: 0166b197c2 ("GFS2: Average in only non-zero round-trip times ...")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Acked-by: Andreas Gruenbacher <agruenba@redhat.com>
559 lines
15 KiB
C
559 lines
15 KiB
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM gfs2
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#if !defined(_TRACE_GFS2_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_GFS2_H
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#include <linux/tracepoint.h>
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#include <linux/fs.h>
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#include <linux/buffer_head.h>
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#include <linux/dlmconstants.h>
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#include <linux/gfs2_ondisk.h>
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#include <linux/writeback.h>
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#include <linux/ktime.h>
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#include "incore.h"
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#include "glock.h"
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#include "rgrp.h"
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#define dlm_state_name(nn) { DLM_LOCK_##nn, #nn }
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#define glock_trace_name(x) __print_symbolic(x, \
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dlm_state_name(IV), \
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dlm_state_name(NL), \
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dlm_state_name(CR), \
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dlm_state_name(CW), \
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dlm_state_name(PR), \
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dlm_state_name(PW), \
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dlm_state_name(EX))
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#define block_state_name(x) __print_symbolic(x, \
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{ GFS2_BLKST_FREE, "free" }, \
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{ GFS2_BLKST_USED, "used" }, \
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{ GFS2_BLKST_DINODE, "dinode" }, \
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{ GFS2_BLKST_UNLINKED, "unlinked" })
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#define TRACE_RS_DELETE 0
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#define TRACE_RS_TREEDEL 1
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#define TRACE_RS_INSERT 2
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#define TRACE_RS_CLAIM 3
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#define rs_func_name(x) __print_symbolic(x, \
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{ 0, "del " }, \
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{ 1, "tdel" }, \
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{ 2, "ins " }, \
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{ 3, "clm " })
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#define show_glock_flags(flags) __print_flags(flags, "", \
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{(1UL << GLF_LOCK), "l" }, \
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{(1UL << GLF_DEMOTE), "D" }, \
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{(1UL << GLF_PENDING_DEMOTE), "d" }, \
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{(1UL << GLF_DEMOTE_IN_PROGRESS), "p" }, \
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{(1UL << GLF_DIRTY), "y" }, \
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{(1UL << GLF_LFLUSH), "f" }, \
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{(1UL << GLF_INVALIDATE_IN_PROGRESS), "i" }, \
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{(1UL << GLF_REPLY_PENDING), "r" }, \
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{(1UL << GLF_INITIAL), "I" }, \
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{(1UL << GLF_FROZEN), "F" }, \
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{(1UL << GLF_QUEUED), "q" }, \
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{(1UL << GLF_LRU), "L" }, \
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{(1UL << GLF_OBJECT), "o" }, \
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{(1UL << GLF_BLOCKING), "b" })
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#ifndef NUMPTY
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#define NUMPTY
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static inline u8 glock_trace_state(unsigned int state)
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{
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switch(state) {
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case LM_ST_SHARED:
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return DLM_LOCK_PR;
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case LM_ST_DEFERRED:
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return DLM_LOCK_CW;
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case LM_ST_EXCLUSIVE:
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return DLM_LOCK_EX;
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}
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return DLM_LOCK_NL;
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}
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#endif
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/* Section 1 - Locking
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*
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* Objectives:
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* Latency: Remote demote request to state change
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* Latency: Local lock request to state change
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* Latency: State change to lock grant
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* Correctness: Ordering of local lock state vs. I/O requests
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* Correctness: Responses to remote demote requests
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*/
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/* General glock state change (DLM lock request completes) */
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TRACE_EVENT(gfs2_glock_state_change,
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TP_PROTO(const struct gfs2_glock *gl, unsigned int new_state),
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TP_ARGS(gl, new_state),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( u64, glnum )
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__field( u32, gltype )
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__field( u8, cur_state )
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__field( u8, new_state )
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__field( u8, dmt_state )
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__field( u8, tgt_state )
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__field( unsigned long, flags )
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),
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TP_fast_assign(
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__entry->dev = gl->gl_name.ln_sbd->sd_vfs->s_dev;
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__entry->glnum = gl->gl_name.ln_number;
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__entry->gltype = gl->gl_name.ln_type;
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__entry->cur_state = glock_trace_state(gl->gl_state);
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__entry->new_state = glock_trace_state(new_state);
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__entry->tgt_state = glock_trace_state(gl->gl_target);
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__entry->dmt_state = glock_trace_state(gl->gl_demote_state);
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__entry->flags = gl->gl_flags | (gl->gl_object ? (1UL<<GLF_OBJECT) : 0);
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),
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TP_printk("%u,%u glock %d:%lld state %s to %s tgt:%s dmt:%s flags:%s",
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MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
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(unsigned long long)__entry->glnum,
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glock_trace_name(__entry->cur_state),
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glock_trace_name(__entry->new_state),
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glock_trace_name(__entry->tgt_state),
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glock_trace_name(__entry->dmt_state),
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show_glock_flags(__entry->flags))
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);
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/* State change -> unlocked, glock is being deallocated */
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TRACE_EVENT(gfs2_glock_put,
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TP_PROTO(const struct gfs2_glock *gl),
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TP_ARGS(gl),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( u64, glnum )
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__field( u32, gltype )
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__field( u8, cur_state )
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__field( unsigned long, flags )
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),
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TP_fast_assign(
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__entry->dev = gl->gl_name.ln_sbd->sd_vfs->s_dev;
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__entry->gltype = gl->gl_name.ln_type;
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__entry->glnum = gl->gl_name.ln_number;
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__entry->cur_state = glock_trace_state(gl->gl_state);
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__entry->flags = gl->gl_flags | (gl->gl_object ? (1UL<<GLF_OBJECT) : 0);
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),
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TP_printk("%u,%u glock %d:%lld state %s => %s flags:%s",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->gltype, (unsigned long long)__entry->glnum,
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glock_trace_name(__entry->cur_state),
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glock_trace_name(DLM_LOCK_IV),
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show_glock_flags(__entry->flags))
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);
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/* Callback (local or remote) requesting lock demotion */
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TRACE_EVENT(gfs2_demote_rq,
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TP_PROTO(const struct gfs2_glock *gl, bool remote),
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TP_ARGS(gl, remote),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( u64, glnum )
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__field( u32, gltype )
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__field( u8, cur_state )
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__field( u8, dmt_state )
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__field( unsigned long, flags )
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__field( bool, remote )
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),
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TP_fast_assign(
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__entry->dev = gl->gl_name.ln_sbd->sd_vfs->s_dev;
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__entry->gltype = gl->gl_name.ln_type;
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__entry->glnum = gl->gl_name.ln_number;
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__entry->cur_state = glock_trace_state(gl->gl_state);
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__entry->dmt_state = glock_trace_state(gl->gl_demote_state);
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__entry->flags = gl->gl_flags | (gl->gl_object ? (1UL<<GLF_OBJECT) : 0);
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__entry->remote = remote;
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),
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TP_printk("%u,%u glock %d:%lld demote %s to %s flags:%s %s",
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MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
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(unsigned long long)__entry->glnum,
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glock_trace_name(__entry->cur_state),
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glock_trace_name(__entry->dmt_state),
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show_glock_flags(__entry->flags),
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__entry->remote ? "remote" : "local")
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);
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/* Promotion/grant of a glock */
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TRACE_EVENT(gfs2_promote,
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TP_PROTO(const struct gfs2_holder *gh, int first),
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TP_ARGS(gh, first),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( u64, glnum )
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__field( u32, gltype )
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__field( int, first )
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__field( u8, state )
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),
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TP_fast_assign(
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__entry->dev = gh->gh_gl->gl_name.ln_sbd->sd_vfs->s_dev;
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__entry->glnum = gh->gh_gl->gl_name.ln_number;
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__entry->gltype = gh->gh_gl->gl_name.ln_type;
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__entry->first = first;
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__entry->state = glock_trace_state(gh->gh_state);
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),
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TP_printk("%u,%u glock %u:%llu promote %s %s",
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MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
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(unsigned long long)__entry->glnum,
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__entry->first ? "first": "other",
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glock_trace_name(__entry->state))
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);
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/* Queue/dequeue a lock request */
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TRACE_EVENT(gfs2_glock_queue,
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TP_PROTO(const struct gfs2_holder *gh, int queue),
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TP_ARGS(gh, queue),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( u64, glnum )
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__field( u32, gltype )
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__field( int, queue )
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__field( u8, state )
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),
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TP_fast_assign(
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__entry->dev = gh->gh_gl->gl_name.ln_sbd->sd_vfs->s_dev;
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__entry->glnum = gh->gh_gl->gl_name.ln_number;
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__entry->gltype = gh->gh_gl->gl_name.ln_type;
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__entry->queue = queue;
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__entry->state = glock_trace_state(gh->gh_state);
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),
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TP_printk("%u,%u glock %u:%llu %squeue %s",
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MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
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(unsigned long long)__entry->glnum,
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__entry->queue ? "" : "de",
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glock_trace_name(__entry->state))
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);
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/* DLM sends a reply to GFS2 */
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TRACE_EVENT(gfs2_glock_lock_time,
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TP_PROTO(const struct gfs2_glock *gl, s64 tdiff),
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TP_ARGS(gl, tdiff),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( u64, glnum )
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__field( u32, gltype )
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__field( int, status )
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__field( char, flags )
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__field( s64, tdiff )
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__field( u64, srtt )
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__field( u64, srttvar )
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__field( u64, srttb )
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__field( u64, srttvarb )
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__field( u64, sirt )
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__field( u64, sirtvar )
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__field( u64, dcount )
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__field( u64, qcount )
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),
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TP_fast_assign(
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__entry->dev = gl->gl_name.ln_sbd->sd_vfs->s_dev;
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__entry->glnum = gl->gl_name.ln_number;
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__entry->gltype = gl->gl_name.ln_type;
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__entry->status = gl->gl_lksb.sb_status;
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__entry->flags = gl->gl_lksb.sb_flags;
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__entry->tdiff = tdiff;
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__entry->srtt = gl->gl_stats.stats[GFS2_LKS_SRTT];
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__entry->srttvar = gl->gl_stats.stats[GFS2_LKS_SRTTVAR];
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__entry->srttb = gl->gl_stats.stats[GFS2_LKS_SRTTB];
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__entry->srttvarb = gl->gl_stats.stats[GFS2_LKS_SRTTVARB];
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__entry->sirt = gl->gl_stats.stats[GFS2_LKS_SIRT];
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__entry->sirtvar = gl->gl_stats.stats[GFS2_LKS_SIRTVAR];
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__entry->dcount = gl->gl_stats.stats[GFS2_LKS_DCOUNT];
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__entry->qcount = gl->gl_stats.stats[GFS2_LKS_QCOUNT];
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),
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TP_printk("%u,%u glock %d:%lld status:%d flags:%02x tdiff:%lld srtt:%lld/%lld srttb:%lld/%lld sirt:%lld/%lld dcnt:%lld qcnt:%lld",
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MAJOR(__entry->dev), MINOR(__entry->dev), __entry->gltype,
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(unsigned long long)__entry->glnum,
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__entry->status, __entry->flags,
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(long long)__entry->tdiff,
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(long long)__entry->srtt,
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(long long)__entry->srttvar,
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(long long)__entry->srttb,
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(long long)__entry->srttvarb,
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(long long)__entry->sirt,
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(long long)__entry->sirtvar,
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(long long)__entry->dcount,
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(long long)__entry->qcount)
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);
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/* Section 2 - Log/journal
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*
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* Objectives:
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* Latency: Log flush time
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* Correctness: pin/unpin vs. disk I/O ordering
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* Performance: Log usage stats
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*/
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/* Pin/unpin a block in the log */
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TRACE_EVENT(gfs2_pin,
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TP_PROTO(const struct gfs2_bufdata *bd, int pin),
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TP_ARGS(bd, pin),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( int, pin )
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__field( u32, len )
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__field( sector_t, block )
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__field( u64, ino )
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),
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TP_fast_assign(
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__entry->dev = bd->bd_gl->gl_name.ln_sbd->sd_vfs->s_dev;
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__entry->pin = pin;
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__entry->len = bd->bd_bh->b_size;
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__entry->block = bd->bd_bh->b_blocknr;
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__entry->ino = bd->bd_gl->gl_name.ln_number;
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),
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TP_printk("%u,%u log %s %llu/%lu inode %llu",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->pin ? "pin" : "unpin",
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(unsigned long long)__entry->block,
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(unsigned long)__entry->len,
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(unsigned long long)__entry->ino)
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);
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/* Flushing the log */
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TRACE_EVENT(gfs2_log_flush,
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TP_PROTO(const struct gfs2_sbd *sdp, int start),
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TP_ARGS(sdp, start),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( int, start )
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__field( u64, log_seq )
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),
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TP_fast_assign(
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__entry->dev = sdp->sd_vfs->s_dev;
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__entry->start = start;
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__entry->log_seq = sdp->sd_log_sequence;
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),
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TP_printk("%u,%u log flush %s %llu",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->start ? "start" : "end",
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(unsigned long long)__entry->log_seq)
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);
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/* Reserving/releasing blocks in the log */
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TRACE_EVENT(gfs2_log_blocks,
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TP_PROTO(const struct gfs2_sbd *sdp, int blocks),
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TP_ARGS(sdp, blocks),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( int, blocks )
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),
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TP_fast_assign(
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__entry->dev = sdp->sd_vfs->s_dev;
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__entry->blocks = blocks;
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),
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TP_printk("%u,%u log reserve %d", MAJOR(__entry->dev),
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MINOR(__entry->dev), __entry->blocks)
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);
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/* Writing back the AIL */
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TRACE_EVENT(gfs2_ail_flush,
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TP_PROTO(const struct gfs2_sbd *sdp, const struct writeback_control *wbc, int start),
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TP_ARGS(sdp, wbc, start),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( int, start )
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__field( int, sync_mode )
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__field( long, nr_to_write )
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),
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TP_fast_assign(
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__entry->dev = sdp->sd_vfs->s_dev;
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__entry->start = start;
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__entry->sync_mode = wbc->sync_mode;
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__entry->nr_to_write = wbc->nr_to_write;
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),
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TP_printk("%u,%u ail flush %s %s %ld", MAJOR(__entry->dev),
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MINOR(__entry->dev), __entry->start ? "start" : "end",
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__entry->sync_mode == WB_SYNC_ALL ? "all" : "none",
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__entry->nr_to_write)
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);
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/* Section 3 - bmap
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*
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* Objectives:
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* Latency: Bmap request time
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* Performance: Block allocator tracing
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* Correctness: Test of disard generation vs. blocks allocated
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*/
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/* Map an extent of blocks, possibly a new allocation */
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TRACE_EVENT(gfs2_bmap,
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TP_PROTO(const struct gfs2_inode *ip, const struct buffer_head *bh,
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sector_t lblock, int create, int errno),
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TP_ARGS(ip, bh, lblock, create, errno),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( sector_t, lblock )
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__field( sector_t, pblock )
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__field( u64, inum )
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__field( unsigned long, state )
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__field( u32, len )
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__field( int, create )
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__field( int, errno )
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),
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TP_fast_assign(
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__entry->dev = ip->i_gl->gl_name.ln_sbd->sd_vfs->s_dev;
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__entry->lblock = lblock;
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__entry->pblock = buffer_mapped(bh) ? bh->b_blocknr : 0;
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__entry->inum = ip->i_no_addr;
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__entry->state = bh->b_state;
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__entry->len = bh->b_size;
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__entry->create = create;
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__entry->errno = errno;
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),
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TP_printk("%u,%u bmap %llu map %llu/%lu to %llu flags:%08lx %s %d",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev),
|
|
(unsigned long long)__entry->inum,
|
|
(unsigned long long)__entry->lblock,
|
|
(unsigned long)__entry->len,
|
|
(unsigned long long)__entry->pblock,
|
|
__entry->state, __entry->create ? "create " : "nocreate",
|
|
__entry->errno)
|
|
);
|
|
|
|
/* Keep track of blocks as they are allocated/freed */
|
|
TRACE_EVENT(gfs2_block_alloc,
|
|
|
|
TP_PROTO(const struct gfs2_inode *ip, struct gfs2_rgrpd *rgd,
|
|
u64 block, unsigned len, u8 block_state),
|
|
|
|
TP_ARGS(ip, rgd, block, len, block_state),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( u64, start )
|
|
__field( u64, inum )
|
|
__field( u32, len )
|
|
__field( u8, block_state )
|
|
__field( u64, rd_addr )
|
|
__field( u32, rd_free_clone )
|
|
__field( u32, rd_reserved )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = rgd->rd_gl->gl_name.ln_sbd->sd_vfs->s_dev;
|
|
__entry->start = block;
|
|
__entry->inum = ip->i_no_addr;
|
|
__entry->len = len;
|
|
__entry->block_state = block_state;
|
|
__entry->rd_addr = rgd->rd_addr;
|
|
__entry->rd_free_clone = rgd->rd_free_clone;
|
|
__entry->rd_reserved = rgd->rd_reserved;
|
|
),
|
|
|
|
TP_printk("%u,%u bmap %llu alloc %llu/%lu %s rg:%llu rf:%u rr:%lu",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev),
|
|
(unsigned long long)__entry->inum,
|
|
(unsigned long long)__entry->start,
|
|
(unsigned long)__entry->len,
|
|
block_state_name(__entry->block_state),
|
|
(unsigned long long)__entry->rd_addr,
|
|
__entry->rd_free_clone, (unsigned long)__entry->rd_reserved)
|
|
);
|
|
|
|
/* Keep track of multi-block reservations as they are allocated/freed */
|
|
TRACE_EVENT(gfs2_rs,
|
|
|
|
TP_PROTO(const struct gfs2_blkreserv *rs, u8 func),
|
|
|
|
TP_ARGS(rs, func),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( u64, rd_addr )
|
|
__field( u32, rd_free_clone )
|
|
__field( u32, rd_reserved )
|
|
__field( u64, inum )
|
|
__field( u64, start )
|
|
__field( u32, free )
|
|
__field( u8, func )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = rs->rs_rbm.rgd->rd_sbd->sd_vfs->s_dev;
|
|
__entry->rd_addr = rs->rs_rbm.rgd->rd_addr;
|
|
__entry->rd_free_clone = rs->rs_rbm.rgd->rd_free_clone;
|
|
__entry->rd_reserved = rs->rs_rbm.rgd->rd_reserved;
|
|
__entry->inum = rs->rs_inum;
|
|
__entry->start = gfs2_rbm_to_block(&rs->rs_rbm);
|
|
__entry->free = rs->rs_free;
|
|
__entry->func = func;
|
|
),
|
|
|
|
TP_printk("%u,%u bmap %llu resrv %llu rg:%llu rf:%lu rr:%lu %s f:%lu",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev),
|
|
(unsigned long long)__entry->inum,
|
|
(unsigned long long)__entry->start,
|
|
(unsigned long long)__entry->rd_addr,
|
|
(unsigned long)__entry->rd_free_clone,
|
|
(unsigned long)__entry->rd_reserved,
|
|
rs_func_name(__entry->func), (unsigned long)__entry->free)
|
|
);
|
|
|
|
#endif /* _TRACE_GFS2_H */
|
|
|
|
/* This part must be outside protection */
|
|
#undef TRACE_INCLUDE_PATH
|
|
#define TRACE_INCLUDE_PATH .
|
|
#define TRACE_INCLUDE_FILE trace_gfs2
|
|
#include <trace/define_trace.h>
|
|
|