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Diffstat (limited to 'usr/src/uts/common/tnf/trace_funcs.c')
-rw-r--r--usr/src/uts/common/tnf/trace_funcs.c342
1 files changed, 0 insertions, 342 deletions
diff --git a/usr/src/uts/common/tnf/trace_funcs.c b/usr/src/uts/common/tnf/trace_funcs.c
deleted file mode 100644
index 96b3e8eed5..0000000000
--- a/usr/src/uts/common/tnf/trace_funcs.c
+++ /dev/null
@@ -1,342 +0,0 @@
-/*
- * CDDL HEADER START
- *
- * The contents of this file are subject to the terms of the
- * Common Development and Distribution License, Version 1.0 only
- * (the "License"). You may not use this file except in compliance
- * with the License.
- *
- * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
- * or http://www.opensolaris.org/os/licensing.
- * See the License for the specific language governing permissions
- * and limitations under the License.
- *
- * When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
- * If applicable, add the following below this CDDL HEADER, with the
- * fields enclosed by brackets "[]" replaced with your own identifying
- * information: Portions Copyright [yyyy] [name of copyright owner]
- *
- * CDDL HEADER END
- */
-/*
- * Copyright (c) 1994, by Sun Microsytems, Inc.
- */
-
-#pragma ident "%Z%%M% %I% %E% SMI"
-
-/*
- * Includes
- */
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/debug.h>
-#include <sys/cmn_err.h>
-#include <sys/tnf.h>
-
-#include "tnf_buf.h"
-#include "tnf_types.h"
-#include "tnf_trace.h"
-
-/*
- * Defines
- */
-
-#define ENCODED_TAG(tag, tagarg) \
- ((tag) | ((tagarg) & 0xfffc) | TNF_REF32_T_PAIR)
-
-/*
- * CAUTION: halfword_accessible assumes that the pointer is to a reclaimable
- * block - i.e. negative offsets have a 0 in high bit
- */
-#define HALFWORD_ACCESSIBLE(x) \
- ((((x) & 0xffff8000) == 0) || (((x) & 0xffff8000) == 0x7fff8000))
-
-/*
- * Check that x can be encoded in tagarg slot
- * Same as above, but operates on ints (no space bit)
- */
-#define TAGARG_CHECK(x) \
- (((x) < 32767) && ((x) > -32768))
-
-/*
- * Check that hit 32 bits of hrtime are zero
- */
-#define TIME_CHECK(x) \
- (((x) >> 32) == 0)
-
-/*
- * CAUTION: Use the following macro only when doing a self relative pointer
- * to a target in the same block
- */
-#define PTR_DIFF(item, ref) \
- ((tnf_ref32_t)((tnf_record_p)(item) - (tnf_record_p)(ref)))
-
-/*
- * Typedefs
- */
-
-typedef struct {
- tnf_probe_event_t probe_event;
- tnf_time_delta_t time_delta;
-} probe_event_prototype_t;
-
-/*
- * Declarations
- */
-
-/*
- * tnf_trace_alloc
- * the probe allocation function
- */
-
-void *
-tnf_trace_alloc(tnf_ops_t *ops, tnf_probe_control_t *probe_p,
- tnf_probe_setup_t *set_p)
-{
- TNFW_B_WCB *wcb;
- uintptr_t probe_index;
- tnf_record_p sched_record_p;
- tnf_reference_t sched_offset, tag_disp;
- tnf_block_header_t *block;
- tnf_uint32_t shift;
- probe_event_prototype_t *buffer;
- hrtime_t curr_time, time_diff;
- tnf_schedule_t *sched;
- tnf_ref32_t *fwd_p;
- size_t size, asize;
-
- /*
- * Check the "tracing active" flag after setting the busy bit;
- * this avoids a race in which we check the "tracing active"
- * flag, then it gets turned off, and the buffer gets
- * deallocated, before we've set the busy bit.
- */
- if (!lock_try(&ops->busy)) /* atomic op flushes WB */
- return (NULL);
- if (!tnf_tracing_active)
- goto null_ret;
-
- /*
- * Write probe tag if needed
- */
- probe_index = probe_p->index;
- if (probe_index == 0) {
- if ((probe_index = tnf_probe_tag(ops, probe_p)) == 0)
- goto null_ret;
- }
-
- /*
- * Determine how much memory is required
- */
- size = probe_p->tnf_event_size;
- asize = size + sizeof (tnf_ref32_t); /* one fwd ptr */
-
- if (PROBE_IS_FILE_PTR(probe_index))
- /* common case - probe_index is a file ptr */
- /* LINTED assignment of 64-bit integer to 32-bit integer */
- tag_disp = probe_index & PROBE_INDEX_LOW_MASK;
- else
- /* rare case -- get an extra fwd ptr */
- asize += sizeof (tnf_ref32_t);
-
- /*
- * Allocate memory
- */
- wcb = &ops->wcb;
- /* LINTED assignment of 64-bit integer to 16-bit integer */
- TNFW_B_ALLOC(wcb, asize, buffer, probe_event_prototype_t *);
- if (buffer == NULL)
- goto null_ret;
-
- /* LINTED pointer cast may result in improper alignment */
- fwd_p = (tnf_ref32_t *)((char *)buffer + size);
-
- /*
- * Check if the probe tag needs more work
- */
- if (!PROBE_IS_FILE_PTR(probe_index)) {
- /* use up first fwd ptr */
- /* LINTED assignment of 64-bit integer to 32-bit integer */
- *fwd_p = TNF_REF32_MAKE_PERMANENT(
- (tnf_record_p)probe_index - tnf_buf);
- /* LINTED cast from 64-bit integer to 32-bit integer */
- tag_disp = PTR_DIFF(fwd_p, buffer);
- tag_disp |= TNF_TAG16_T_REL;
- tag_disp = tag_disp << TNF_REF32_TAG16_SHIFT;
- fwd_p++;
- }
-
- /*
- * Get timestamp
- */
- curr_time = gethrtime();
-
- /*
- * Write schedule record if needed
- */
- sched = &ops->schedule;
-
- /* LINTED pointer cast */
- shift = ((tnf_buf_file_header_t *)tnf_buf)->com.file_log_size;
- block = (tnf_block_header_t *)((uintptr_t)buffer & TNF_BLOCK_MASK);
-
- if ((sched_record_p = sched->record_p) == NULL)
- /* No record written yet */
- goto new_schedule;
-
- /*
- * Note: Don't bother about space bit here, because we'll
- * only use bits 15:2 anyway
- */
-#if defined(_LP64)
- /* LINTED assignment of 64-bit integer to 32-bit integer */
- sched_offset = ((sched->record_gen - block->generation) << shift) +
- (sched_record_p - (caddr_t)buffer);
-#else
- sched_offset = ((sched->record_gen - block->generation) << shift) +
- (sched_record_p - (caddr_t)buffer);
-#endif
- if (!TAGARG_CHECK(sched_offset))
- /* Record too far away to reference */
- goto new_schedule;
-
- time_diff = curr_time - sched->time_base;
- if (!TIME_CHECK(time_diff))
- /* Time delta can't fit in 32 bits */
- goto new_schedule;
-
- if (sched->cpuid != CPU->cpu_id)
- /* CPU information is invalid */
- goto new_schedule;
-
- /*
- * Can reuse existing schedule record
- * Since we did not allocate any more space, can giveback
- */
-#if defined(_LP64)
- /* LINTED warning: assignment of 64-bit integer to 16-bit integer */
- TNFW_B_GIVEBACK(wcb, fwd_p);
-#else
- TNFW_B_GIVEBACK(wcb, fwd_p);
-#endif
-
-good_ret:
- /*
- * Store return params and two common event members, return buffer
- */
- set_p->tpd_p = ops;
- set_p->buffer_p = buffer;
- set_p->probe_p = probe_p;
- buffer->probe_event = ENCODED_TAG(tag_disp, sched_offset);
-#if defined(_LP64)
- /* LINTED assignment of 64-bit integer to 32-bit integer */
- buffer->time_delta = tnf_time_delta(ops, (unsigned long)time_diff,
- &buffer->probe_time_delta);
-#else
- buffer->time_delta = tnf_time_delta(ops, (unsigned long)time_diff,
- &buffer->probe_time_delta);
-#endif
- return (buffer);
-
-new_schedule:
- /*
- * Write a new schedule record for this thread
- */
- sched->cpuid = CPU->cpu_id;
- sched->time_base = curr_time;
- time_diff = 0;
- if ((sched_record_p = tnf_kernel_schedule(ops, sched)) != NULL) {
- /* use one of the extra alloced words for the forwarding ptr */
-#if defined(_LP64)
- /* LINTED assignment of 64-bit integer to 32-bit integer */
- *fwd_p = TNF_REF32_MAKE_RECLAIMABLE(
- ((sched->record_gen - block->generation) << shift) +
- /* LINTED */
- (sched_record_p - (tnf_record_p)fwd_p));
- /* LINTED cast from 64-bit integer to 32-bit integer */
- sched_offset = PTR_DIFF(fwd_p, buffer);
-#else
- *fwd_p = TNF_REF32_MAKE_RECLAIMABLE(
- ((sched->record_gen - block->generation) << shift) +
- (sched_record_p - (tnf_record_p)fwd_p));
- sched_offset = PTR_DIFF(fwd_p, buffer);
-#endif
- } else {
- /* Allocation failed (tracing may have been stopped) */
- sched_offset = 0;
- *fwd_p = TNF_NULL;
- }
- goto good_ret;
-
-null_ret:
- /*
- * Clear busy flag and return null
- */
- LOCK_INIT_CLEAR(&ops->busy); /* XXX save a call */
- return (NULL);
-}
-
-/*
- * tnf_trace_commit
- */
-void
-tnf_trace_commit(tnf_probe_setup_t *set_p)
-{
- tnf_ops_t *ops;
- TNFW_B_WCB *wcb;
- TNFW_B_POS *pos;
-
- ops = set_p->tpd_p;
- wcb = &ops->wcb;
-
- /* commit reusable bytes */
- pos = &wcb->tnfw_w_pos;
- TNFW_B_COMMIT(pos);
-
- /* commit tag bytes */
- pos = &wcb->tnfw_w_tag_pos;
- TNFW_B_COMMIT(pos);
-
- /* clear busy flag */
- LOCK_INIT_CLEAR(&ops->busy); /* XXX save a call */
-}
-
-/*
- * tnf_trace_rollback
- */
-void
-tnf_trace_rollback(tnf_probe_setup_t *set_p)
-{
- tnf_ops_t *ops;
- TNFW_B_WCB *wcb;
- TNFW_B_POS *pos;
-
- ops = set_p->tpd_p;
- wcb = &ops->wcb;
-
- /* rollback data bytes */
- pos = &wcb->tnfw_w_pos;
- TNFW_B_ROLLBACK(pos);
-
- /* commit tag bytes */
- pos = &wcb->tnfw_w_tag_pos;
- TNFW_B_COMMIT(pos);
-
- /* zap schedule record, since it is in uncommitted store */
- ops->schedule.record_p = NULL;
-
- /* clear busy flag */
- LOCK_INIT_CLEAR(&ops->busy); /* XXX save a call */
-}
-
-/*
- * tnf_allocate
- * exported interface for allocating trace memory
- */
-
-void *
-tnf_allocate(tnf_ops_t *ops, size_t size)
-{
- return (tnfw_b_alloc(&ops->wcb, size, ops->mode));
-}
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