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https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
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libata: Add tracepoints
Add some tracepoints for ata_qc_issue, ata_qc_complete, and ata_eh_link_autopsy. Signed-off-by: Hannes Reinecke <[email protected]> Signed-off-by: Tejun Heo <[email protected]>
This commit is contained in:
Hannes Reinecke
Tejun Heo
parent
a1524f226a
commit
255c03d15a
5 changed files with 488 additions and 3 deletions
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@ -111,7 +111,8 @@ obj-$(CONFIG_ATA_GENERIC) += ata_generic.o
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# Should be last libata driver
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obj-$(CONFIG_PATA_LEGACY) += pata_legacy.o
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libata-y := libata-core.o libata-scsi.o libata-eh.o libata-transport.o
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libata-y := libata-core.o libata-scsi.o libata-eh.o \
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libata-transport.o libata-trace.o
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libata-$(CONFIG_ATA_SFF) += libata-sff.o
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libata-$(CONFIG_SATA_PMP) += libata-pmp.o
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libata-$(CONFIG_ATA_ACPI) += libata-acpi.o
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@ -70,6 +70,9 @@
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#include <linux/pm_runtime.h>
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#include <linux/platform_device.h>
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#define CREATE_TRACE_POINTS
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#include <trace/events/libata.h>
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#include "libata.h"
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#include "libata-transport.h"
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@ -4904,6 +4907,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
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*/
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if (unlikely(ata_tag_internal(qc->tag))) {
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fill_result_tf(qc);
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trace_ata_qc_complete_internal(qc);
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__ata_qc_complete(qc);
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return;
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}
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@ -4914,6 +4918,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
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*/
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if (unlikely(qc->flags & ATA_QCFLAG_FAILED)) {
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fill_result_tf(qc);
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trace_ata_qc_complete_failed(qc);
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ata_qc_schedule_eh(qc);
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return;
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}
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@ -4924,6 +4929,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
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if (qc->flags & ATA_QCFLAG_RESULT_TF)
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fill_result_tf(qc);
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trace_ata_qc_complete_done(qc);
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/* Some commands need post-processing after successful
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* completion.
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*/
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@ -5071,7 +5077,7 @@ void ata_qc_issue(struct ata_queued_cmd *qc)
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}
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ap->ops->qc_prep(qc);
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trace_ata_qc_issue(qc);
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qc->err_mask |= ap->ops->qc_issue(qc);
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if (unlikely(qc->err_mask))
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goto err;
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@ -46,6 +46,7 @@
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#include <linux/libata.h>
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#include <trace/events/libata.h>
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#include "libata.h"
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enum {
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@ -2291,6 +2292,7 @@ static void ata_eh_link_autopsy(struct ata_link *link)
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all_err_mask |= qc->err_mask;
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if (qc->flags & ATA_QCFLAG_IO)
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eflags |= ATA_EFLAG_IS_IO;
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trace_ata_eh_link_autopsy_qc(qc);
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}
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/* enforce default EH actions */
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@ -2325,7 +2327,7 @@ static void ata_eh_link_autopsy(struct ata_link *link)
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eflags |= ATA_EFLAG_DUBIOUS_XFER;
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ehc->i.action |= ata_eh_speed_down(dev, eflags, all_err_mask);
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}
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trace_ata_eh_link_autopsy(dev, ehc->i.action, all_err_mask);
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DPRINTK("EXIT\n");
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}
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151
drivers/ata/libata-trace.c
Normal file
151
drivers/ata/libata-trace.c
Normal file
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@ -0,0 +1,151 @@
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/*
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* libata-trace.c - trace functions for libata
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*
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* Copyright 2015 Hannes Reinecke
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* Copyright 2015 SUSE Linux GmbH
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/trace_seq.h>
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#include <trace/events/libata.h>
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const char *
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libata_trace_parse_status(struct trace_seq *p, unsigned char status)
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{
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const char *ret = trace_seq_buffer_ptr(p);
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trace_seq_printf(p, "{ ");
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if (status & ATA_BUSY)
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trace_seq_printf(p, "BUSY ");
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if (status & ATA_DRDY)
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trace_seq_printf(p, "DRDY ");
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if (status & ATA_DF)
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trace_seq_printf(p, "DF ");
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if (status & ATA_DSC)
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trace_seq_printf(p, "DSC ");
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if (status & ATA_DRQ)
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trace_seq_printf(p, "DRQ ");
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if (status & ATA_CORR)
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trace_seq_printf(p, "CORR ");
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if (status & ATA_SENSE)
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trace_seq_printf(p, "SENSE ");
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if (status & ATA_ERR)
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trace_seq_printf(p, "ERR ");
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trace_seq_putc(p, '}');
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trace_seq_putc(p, 0);
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return ret;
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}
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const char *
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libata_trace_parse_eh_action(struct trace_seq *p, unsigned int eh_action)
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{
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const char *ret = trace_seq_buffer_ptr(p);
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trace_seq_printf(p, "%x", eh_action);
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if (eh_action) {
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trace_seq_printf(p, "{ ");
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if (eh_action & ATA_EH_REVALIDATE)
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trace_seq_printf(p, "REVALIDATE ");
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if (eh_action & (ATA_EH_SOFTRESET | ATA_EH_HARDRESET))
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trace_seq_printf(p, "RESET ");
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else if (eh_action & ATA_EH_SOFTRESET)
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trace_seq_printf(p, "SOFTRESET ");
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else if (eh_action & ATA_EH_HARDRESET)
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trace_seq_printf(p, "HARDRESET ");
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if (eh_action & ATA_EH_ENABLE_LINK)
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trace_seq_printf(p, "ENABLE_LINK ");
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if (eh_action & ATA_EH_PARK)
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trace_seq_printf(p, "PARK ");
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trace_seq_putc(p, '}');
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}
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trace_seq_putc(p, 0);
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return ret;
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}
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const char *
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libata_trace_parse_eh_err_mask(struct trace_seq *p, unsigned int eh_err_mask)
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{
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const char *ret = trace_seq_buffer_ptr(p);
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trace_seq_printf(p, "%x", eh_err_mask);
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if (eh_err_mask) {
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trace_seq_printf(p, "{ ");
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if (eh_err_mask & AC_ERR_DEV)
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trace_seq_printf(p, "DEV ");
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if (eh_err_mask & AC_ERR_HSM)
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trace_seq_printf(p, "HSM ");
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if (eh_err_mask & AC_ERR_TIMEOUT)
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trace_seq_printf(p, "TIMEOUT ");
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if (eh_err_mask & AC_ERR_MEDIA)
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trace_seq_printf(p, "MEDIA ");
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if (eh_err_mask & AC_ERR_ATA_BUS)
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trace_seq_printf(p, "ATA_BUS ");
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if (eh_err_mask & AC_ERR_HOST_BUS)
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trace_seq_printf(p, "HOST_BUS ");
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if (eh_err_mask & AC_ERR_SYSTEM)
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trace_seq_printf(p, "SYSTEM ");
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if (eh_err_mask & AC_ERR_INVALID)
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trace_seq_printf(p, "INVALID ");
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if (eh_err_mask & AC_ERR_OTHER)
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trace_seq_printf(p, "OTHER ");
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if (eh_err_mask & AC_ERR_NODEV_HINT)
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trace_seq_printf(p, "NODEV_HINT ");
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if (eh_err_mask & AC_ERR_NCQ)
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trace_seq_printf(p, "NCQ ");
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trace_seq_putc(p, '}');
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}
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trace_seq_putc(p, 0);
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return ret;
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}
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const char *
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libata_trace_parse_qc_flags(struct trace_seq *p, unsigned int qc_flags)
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{
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const char *ret = trace_seq_buffer_ptr(p);
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trace_seq_printf(p, "%x", qc_flags);
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if (qc_flags) {
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trace_seq_printf(p, "{ ");
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if (qc_flags & ATA_QCFLAG_ACTIVE)
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trace_seq_printf(p, "ACTIVE ");
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if (qc_flags & ATA_QCFLAG_DMAMAP)
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trace_seq_printf(p, "DMAMAP ");
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if (qc_flags & ATA_QCFLAG_IO)
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trace_seq_printf(p, "IO ");
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if (qc_flags & ATA_QCFLAG_RESULT_TF)
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trace_seq_printf(p, "RESULT_TF ");
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if (qc_flags & ATA_QCFLAG_CLEAR_EXCL)
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trace_seq_printf(p, "CLEAR_EXCL ");
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if (qc_flags & ATA_QCFLAG_QUIET)
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trace_seq_printf(p, "QUIET ");
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if (qc_flags & ATA_QCFLAG_RETRY)
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trace_seq_printf(p, "RETRY ");
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if (qc_flags & ATA_QCFLAG_FAILED)
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trace_seq_printf(p, "FAILED ");
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if (qc_flags & ATA_QCFLAG_SENSE_VALID)
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trace_seq_printf(p, "SENSE_VALID ");
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if (qc_flags & ATA_QCFLAG_EH_SCHEDULED)
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trace_seq_printf(p, "EH_SCHEDULED ");
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trace_seq_putc(p, '}');
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}
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trace_seq_putc(p, 0);
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return ret;
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}
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