From: Steffen Maier Date: Fri, 26 Apr 2013 14:13:53 +0000 (+0200) Subject: [SCSI] zfcp: module parameter dbflevel for early debugging X-Git-Tag: v3.11-rc1~88^2~94 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bf3ea3aec568a9f10a9fea3f3f0a290a94d5cc12;p=profile%2Fivi%2Fkernel-x86-ivi.git [SCSI] zfcp: module parameter dbflevel for early debugging So far, we could only increase the s390dbf log level after an FCP device has been initially set online for it to create the dbf entries required to adjust the level. Introduce zfcp.dbflevel as counterpart to the already existing zfcp.dbfsize to enable debugging of e.g. setting an FCP device online. Signed-off-by: Steffen Maier Signed-off-by: James Bottomley --- diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c index e1a8cc2..132a905 100644 --- a/drivers/s390/scsi/zfcp_dbf.c +++ b/drivers/s390/scsi/zfcp_dbf.c @@ -3,7 +3,7 @@ * * Debug traces for zfcp. * - * Copyright IBM Corp. 2002, 2010 + * Copyright IBM Corp. 2002, 2013 */ #define KMSG_COMPONENT "zfcp" @@ -23,6 +23,13 @@ module_param(dbfsize, uint, 0400); MODULE_PARM_DESC(dbfsize, "number of pages for each debug feature area (default 4)"); +static u32 dbflevel = 3; + +module_param(dbflevel, uint, 0400); +MODULE_PARM_DESC(dbflevel, + "log level for each debug feature area " + "(default 3, range 0..6)"); + static inline unsigned int zfcp_dbf_plen(unsigned int offset) { return sizeof(struct zfcp_dbf_pay) + offset - ZFCP_DBF_PAY_MAX_REC; @@ -447,7 +454,7 @@ static debug_info_t *zfcp_dbf_reg(const char *name, int size, int rec_size) return NULL; debug_register_view(d, &debug_hex_ascii_view); - debug_set_level(d, 3); + debug_set_level(d, dbflevel); return d; }