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Thu, 8 Feb 2024 17:42:48 +0100 (CET) From: Stefan Haberland To: Jens Axboe Cc: linux-block@vger.kernel.org, Jan Hoeppner , linux-s390@vger.kernel.org, Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Miroslav Franc Subject: [PATCH RESEND 06/11] s390/dasd: Use dev_err() over printk() Date: Thu, 8 Feb 2024 17:42:45 +0100 Message-Id: <20240208164248.540985-7-sth@linux.ibm.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240208164248.540985-1-sth@linux.ibm.com> References: <20240208164248.540985-1-sth@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: PU0SLLcKea0wSb2RxL1bmTeWr_eCBhza X-Proofpoint-ORIG-GUID: PU0SLLcKea0wSb2RxL1bmTeWr_eCBhza X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-08_07,2024-02-08_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=812 priorityscore=1501 impostorscore=0 phishscore=0 spamscore=0 bulkscore=0 suspectscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 mlxscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402080088 From: Jan Höppner To reduce the information required for the string generation in the sense dump functions, use the more concise dev_err() variant over printk(KERN_ERR, ...) to improve code readability. The dev_err() function provides the component and device name for free and the separate dev_name() calls as well as the PRINTK_HEADER can be dropped. Dropping PRINTK_HEADER removes the "dasd(eckd):" for all lines. Only the first line of a dev_err() call is prefixed with the component and device (e.g. "dasd-eckd 0.0.95d0:"). The format specifier for printed pointers is also changed to unhashed (%px) as this can help with debugging and servicing. Signed-off-by: Jan Höppner Reviewed-by: Stefan Haberland Signed-off-by: Stefan Haberland --- drivers/s390/block/dasd_eckd.c | 139 +++++++++++++-------------------- drivers/s390/block/dasd_fba.c | 55 +++++-------- 2 files changed, 76 insertions(+), 118 deletions(-) diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 229f23a30c5b..d9f776789429 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -37,11 +37,6 @@ #include "dasd_int.h" #include "dasd_eckd.h" -#ifdef PRINTK_HEADER -#undef PRINTK_HEADER -#endif /* PRINTK_HEADER */ -#define PRINTK_HEADER "dasd(eckd):" - /* * raw track access always map to 64k in memory * so it maps to 16 blocks of 4k per track @@ -5521,15 +5516,15 @@ dasd_eckd_ioctl(struct dasd_block *block, unsigned int cmd, void __user *argp) * and return number of printed chars. */ static void -dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page) +dasd_eckd_dump_ccw_range(struct dasd_device *device, struct ccw1 *from, + struct ccw1 *to, char *page) { int len, count; char *datap; len = 0; while (from <= to) { - len += sprintf(page + len, PRINTK_HEADER - " CCW %p: %08X %08X DAT:", + len += sprintf(page + len, "CCW %px: %08X %08X DAT:", from, ((int *) from)[0], ((int *) from)[1]); /* get pointer to data (consider IDALs) */ @@ -5552,7 +5547,7 @@ dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page) from++; } if (len > 0) - printk(KERN_ERR "%s", page); + dev_err(&device->cdev->dev, "%s", page); } static void @@ -5583,9 +5578,12 @@ dasd_eckd_dump_sense_dbf(struct dasd_device *device, struct irb *irb, static void dasd_eckd_dump_sense_ccw(struct dasd_device *device, struct dasd_ccw_req *req, struct irb *irb) { - char *page; struct ccw1 *first, *last, *fail, *from, *to; + struct device *dev; int len, sl, sct; + char *page; + + dev = &device->cdev->dev; page = (char *) get_zeroed_page(GFP_ATOMIC); if (page == NULL) { @@ -5594,24 +5592,18 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device, return; } /* dump the sense data */ - len = sprintf(page, PRINTK_HEADER - " I/O status report for device %s:\n", - dev_name(&device->cdev->dev)); - len += sprintf(page + len, PRINTK_HEADER - " in req: %p CC:%02X FC:%02X AC:%02X SC:%02X DS:%02X " - "CS:%02X RC:%d\n", + len = sprintf(page, "I/O status report:\n"); + len += sprintf(page + len, + "in req: %px CC:%02X FC:%02X AC:%02X SC:%02X DS:%02X CS:%02X RC:%d\n", req, scsw_cc(&irb->scsw), scsw_fctl(&irb->scsw), scsw_actl(&irb->scsw), scsw_stctl(&irb->scsw), scsw_dstat(&irb->scsw), scsw_cstat(&irb->scsw), req ? req->intrc : 0); - len += sprintf(page + len, PRINTK_HEADER - " device %s: Failing CCW: %p\n", - dev_name(&device->cdev->dev), + len += sprintf(page + len, "Failing CCW: %px\n", phys_to_virt(irb->scsw.cmd.cpa)); if (irb->esw.esw0.erw.cons) { for (sl = 0; sl < 4; sl++) { - len += sprintf(page + len, PRINTK_HEADER - " Sense(hex) %2d-%2d:", + len += sprintf(page + len, "Sense(hex) %2d-%2d:", (8 * sl), ((8 * sl) + 7)); for (sct = 0; sct < 8; sct++) { @@ -5623,23 +5615,20 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device, if (irb->ecw[27] & DASD_SENSE_BIT_0) { /* 24 Byte Sense Data */ - sprintf(page + len, PRINTK_HEADER - " 24 Byte: %x MSG %x, " - "%s MSGb to SYSOP\n", + sprintf(page + len, + "24 Byte: %x MSG %x, %s MSGb to SYSOP\n", irb->ecw[7] >> 4, irb->ecw[7] & 0x0f, irb->ecw[1] & 0x10 ? "" : "no"); } else { /* 32 Byte Sense Data */ - sprintf(page + len, PRINTK_HEADER - " 32 Byte: Format: %x " - "Exception class %x\n", + sprintf(page + len, + "32 Byte: Format: %x Exception class %x\n", irb->ecw[6] & 0x0f, irb->ecw[22] >> 4); } } else { - sprintf(page + len, PRINTK_HEADER - " SORRY - NO VALID SENSE AVAILABLE\n"); + sprintf(page + len, "SORRY - NO VALID SENSE AVAILABLE\n"); } - printk(KERN_ERR "%s", page); + dev_err(dev, "%s", page); if (req) { /* req == NULL for unsolicited interrupts */ @@ -5648,8 +5637,8 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device, first = req->cpaddr; for (last = first; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++); to = min(first + 6, last); - printk(KERN_ERR PRINTK_HEADER " Related CP in req: %p\n", req); - dasd_eckd_dump_ccw_range(first, to, page); + dev_err(dev, "Related CP in req: %px\n", req); + dasd_eckd_dump_ccw_range(device, first, to, page); /* print failing CCW area (maximum 4) */ /* scsw->cda is either valid or zero */ @@ -5657,19 +5646,19 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device, fail = phys_to_virt(irb->scsw.cmd.cpa); /* failing CCW */ if (from < fail - 2) { from = fail - 2; /* there is a gap - print header */ - printk(KERN_ERR PRINTK_HEADER "......\n"); + dev_err(dev, "......\n"); } to = min(fail + 1, last); - dasd_eckd_dump_ccw_range(from, to, page + len); + dasd_eckd_dump_ccw_range(device, from, to, page + len); /* print last CCWs (maximum 2) */ len = 0; from = max(from, ++to); if (from < last - 1) { from = last - 1; /* there is a gap - print header */ - printk(KERN_ERR PRINTK_HEADER "......\n"); + dev_err(dev, "......\n"); } - dasd_eckd_dump_ccw_range(from, last, page + len); + dasd_eckd_dump_ccw_range(device, from, last, page + len); } free_page((unsigned long) page); } @@ -5693,11 +5682,9 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device, return; } /* dump the sense data */ - len = sprintf(page, PRINTK_HEADER - " I/O status report for device %s:\n", - dev_name(&device->cdev->dev)); - len += sprintf(page + len, PRINTK_HEADER - " in req: %p CC:%02X FC:%02X AC:%02X SC:%02X DS:%02X " + len = sprintf(page, "I/O status report:\n"); + len += sprintf(page + len, + "in req: %px CC:%02X FC:%02X AC:%02X SC:%02X DS:%02X " "CS:%02X fcxs:%02X schxs:%02X RC:%d\n", req, scsw_cc(&irb->scsw), scsw_fctl(&irb->scsw), scsw_actl(&irb->scsw), scsw_stctl(&irb->scsw), @@ -5705,9 +5692,7 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device, irb->scsw.tm.fcxs, (irb->scsw.tm.ifob << 7) | irb->scsw.tm.sesq, req ? req->intrc : 0); - len += sprintf(page + len, PRINTK_HEADER - " device %s: Failing TCW: %p\n", - dev_name(&device->cdev->dev), + len += sprintf(page + len, "Failing TCW: %px\n", phys_to_virt(irb->scsw.tm.tcw)); tsb = NULL; @@ -5716,47 +5701,37 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device, tsb = tcw_get_tsb(phys_to_virt(irb->scsw.tm.tcw)); if (tsb) { - len += sprintf(page + len, PRINTK_HEADER - " tsb->length %d\n", tsb->length); - len += sprintf(page + len, PRINTK_HEADER - " tsb->flags %x\n", tsb->flags); - len += sprintf(page + len, PRINTK_HEADER - " tsb->dcw_offset %d\n", tsb->dcw_offset); - len += sprintf(page + len, PRINTK_HEADER - " tsb->count %d\n", tsb->count); + len += sprintf(page + len, "tsb->length %d\n", tsb->length); + len += sprintf(page + len, "tsb->flags %x\n", tsb->flags); + len += sprintf(page + len, "tsb->dcw_offset %d\n", tsb->dcw_offset); + len += sprintf(page + len, "tsb->count %d\n", tsb->count); residual = tsb->count - 28; - len += sprintf(page + len, PRINTK_HEADER - " residual %d\n", residual); + len += sprintf(page + len, "residual %d\n", residual); switch (tsb->flags & 0x07) { case 1: /* tsa_iostat */ - len += sprintf(page + len, PRINTK_HEADER - " tsb->tsa.iostat.dev_time %d\n", + len += sprintf(page + len, "tsb->tsa.iostat.dev_time %d\n", tsb->tsa.iostat.dev_time); - len += sprintf(page + len, PRINTK_HEADER - " tsb->tsa.iostat.def_time %d\n", + len += sprintf(page + len, "tsb->tsa.iostat.def_time %d\n", tsb->tsa.iostat.def_time); - len += sprintf(page + len, PRINTK_HEADER - " tsb->tsa.iostat.queue_time %d\n", + len += sprintf(page + len, "tsb->tsa.iostat.queue_time %d\n", tsb->tsa.iostat.queue_time); - len += sprintf(page + len, PRINTK_HEADER - " tsb->tsa.iostat.dev_busy_time %d\n", + len += sprintf(page + len, "tsb->tsa.iostat.dev_busy_time %d\n", tsb->tsa.iostat.dev_busy_time); - len += sprintf(page + len, PRINTK_HEADER - " tsb->tsa.iostat.dev_act_time %d\n", + len += sprintf(page + len, "tsb->tsa.iostat.dev_act_time %d\n", tsb->tsa.iostat.dev_act_time); sense = tsb->tsa.iostat.sense; break; case 2: /* ts_ddpc */ - len += sprintf(page + len, PRINTK_HEADER - " tsb->tsa.ddpc.rc %d\n", tsb->tsa.ddpc.rc); + len += sprintf(page + len, "tsb->tsa.ddpc.rc %d\n", + tsb->tsa.ddpc.rc); for (sl = 0; sl < 2; sl++) { - len += sprintf(page + len, PRINTK_HEADER - " tsb->tsa.ddpc.rcq %2d-%2d: ", + len += sprintf(page + len, + "tsb->tsa.ddpc.rcq %2d-%2d: ", (8 * sl), ((8 * sl) + 7)); rcq = tsb->tsa.ddpc.rcq; for (sct = 0; sct < 8; sct++) { - len += sprintf(page + len, " %02x", + len += sprintf(page + len, "%02x", rcq[8 * sl + sct]); } len += sprintf(page + len, "\n"); @@ -5764,15 +5739,15 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device, sense = tsb->tsa.ddpc.sense; break; case 3: /* tsa_intrg */ - len += sprintf(page + len, PRINTK_HEADER - " tsb->tsa.intrg.: not supported yet\n"); + len += sprintf(page + len, + "tsb->tsa.intrg.: not supported yet\n"); break; } if (sense) { for (sl = 0; sl < 4; sl++) { - len += sprintf(page + len, PRINTK_HEADER - " Sense(hex) %2d-%2d:", + len += sprintf(page + len, + "Sense(hex) %2d-%2d:", (8 * sl), ((8 * sl) + 7)); for (sct = 0; sct < 8; sct++) { len += sprintf(page + len, " %02x", @@ -5783,27 +5758,23 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device, if (sense[27] & DASD_SENSE_BIT_0) { /* 24 Byte Sense Data */ - sprintf(page + len, PRINTK_HEADER - " 24 Byte: %x MSG %x, " - "%s MSGb to SYSOP\n", + sprintf(page + len, + "24 Byte: %x MSG %x, %s MSGb to SYSOP\n", sense[7] >> 4, sense[7] & 0x0f, sense[1] & 0x10 ? "" : "no"); } else { /* 32 Byte Sense Data */ - sprintf(page + len, PRINTK_HEADER - " 32 Byte: Format: %x " - "Exception class %x\n", + sprintf(page + len, + "32 Byte: Format: %x Exception class %x\n", sense[6] & 0x0f, sense[22] >> 4); } } else { - sprintf(page + len, PRINTK_HEADER - " SORRY - NO VALID SENSE AVAILABLE\n"); + sprintf(page + len, "SORRY - NO VALID SENSE AVAILABLE\n"); } } else { - sprintf(page + len, PRINTK_HEADER - " SORRY - NO TSB DATA AVAILABLE\n"); + sprintf(page + len, "SORRY - NO TSB DATA AVAILABLE\n"); } - printk(KERN_ERR "%s", page); + dev_err(&device->cdev->dev, "%s", page); free_page((unsigned long) page); } diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c index c06fa2b27120..045e548630df 100644 --- a/drivers/s390/block/dasd_fba.c +++ b/drivers/s390/block/dasd_fba.c @@ -25,11 +25,6 @@ #include "dasd_int.h" #include "dasd_fba.h" -#ifdef PRINTK_HEADER -#undef PRINTK_HEADER -#endif /* PRINTK_HEADER */ -#define PRINTK_HEADER "dasd(fba):" - #define FBA_DEFAULT_RETRIES 32 #define DASD_FBA_CCW_WRITE 0x41 @@ -660,30 +655,27 @@ static void dasd_fba_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req, struct irb *irb) { - char *page; struct ccw1 *act, *end, *last; int len, sl, sct, count; + struct device *dev; + char *page; + + dev = &device->cdev->dev; page = (char *) get_zeroed_page(GFP_ATOMIC); if (page == NULL) { DBF_DEV_EVENT(DBF_WARNING, device, "%s", - "No memory to dump sense data"); + "No memory to dump sense data"); return; } - len = sprintf(page, PRINTK_HEADER - " I/O status report for device %s:\n", - dev_name(&device->cdev->dev)); - len += sprintf(page + len, PRINTK_HEADER - " in req: %p CS: 0x%02X DS: 0x%02X\n", req, - irb->scsw.cmd.cstat, irb->scsw.cmd.dstat); - len += sprintf(page + len, PRINTK_HEADER - " device %s: Failing CCW: %p\n", - dev_name(&device->cdev->dev), + len = sprintf(page, "I/O status report:\n"); + len += sprintf(page + len, "in req: %px CS: 0x%02X DS: 0x%02X\n", + req, irb->scsw.cmd.cstat, irb->scsw.cmd.dstat); + len += sprintf(page + len, "Failing CCW: %px\n", (void *) (addr_t) irb->scsw.cmd.cpa); if (irb->esw.esw0.erw.cons) { for (sl = 0; sl < 4; sl++) { - len += sprintf(page + len, PRINTK_HEADER - " Sense(hex) %2d-%2d:", + len += sprintf(page + len, "Sense(hex) %2d-%2d:", (8 * sl), ((8 * sl) + 7)); for (sct = 0; sct < 8; sct++) { @@ -693,20 +685,18 @@ dasd_fba_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req, len += sprintf(page + len, "\n"); } } else { - len += sprintf(page + len, PRINTK_HEADER - " SORRY - NO VALID SENSE AVAILABLE\n"); + len += sprintf(page + len, "SORRY - NO VALID SENSE AVAILABLE\n"); } - printk(KERN_ERR "%s", page); + dev_err(dev, "%s", page); /* dump the Channel Program */ /* print first CCWs (maximum 8) */ act = req->cpaddr; - for (last = act; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++); + for (last = act; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++); end = min(act + 8, last); - len = sprintf(page, PRINTK_HEADER " Related CP in req: %p\n", req); + len = sprintf(page, "Related CP in req: %px\n", req); while (act <= end) { - len += sprintf(page + len, PRINTK_HEADER - " CCW %p: %08X %08X DAT:", + len += sprintf(page + len, "CCW %px: %08X %08X DAT:", act, ((int *) act)[0], ((int *) act)[1]); for (count = 0; count < 32 && count < act->count; count += sizeof(int)) @@ -716,19 +706,17 @@ dasd_fba_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req, len += sprintf(page + len, "\n"); act++; } - printk(KERN_ERR "%s", page); - + dev_err(dev, "%s", page); /* print failing CCW area */ len = 0; if (act < ((struct ccw1 *)(addr_t) irb->scsw.cmd.cpa) - 2) { act = ((struct ccw1 *)(addr_t) irb->scsw.cmd.cpa) - 2; - len += sprintf(page + len, PRINTK_HEADER "......\n"); + len += sprintf(page + len, "......\n"); } end = min((struct ccw1 *)(addr_t) irb->scsw.cmd.cpa + 2, last); while (act <= end) { - len += sprintf(page + len, PRINTK_HEADER - " CCW %p: %08X %08X DAT:", + len += sprintf(page + len, "CCW %px: %08X %08X DAT:", act, ((int *) act)[0], ((int *) act)[1]); for (count = 0; count < 32 && count < act->count; count += sizeof(int)) @@ -742,11 +730,10 @@ dasd_fba_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req, /* print last CCWs */ if (act < last - 2) { act = last - 2; - len += sprintf(page + len, PRINTK_HEADER "......\n"); + len += sprintf(page + len, "......\n"); } while (act <= last) { - len += sprintf(page + len, PRINTK_HEADER - " CCW %p: %08X %08X DAT:", + len += sprintf(page + len, "CCW %px: %08X %08X DAT:", act, ((int *) act)[0], ((int *) act)[1]); for (count = 0; count < 32 && count < act->count; count += sizeof(int)) @@ -757,7 +744,7 @@ dasd_fba_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req, act++; } if (len > 0) - printk(KERN_ERR "%s", page); + dev_err(dev, "%s", page); free_page((unsigned long) page); }