[SRU][J][PATCH 01/17] s390/pci: make better use of zpci_dbg() levels

[Massimiliano Pellizzer]

From: Niklas Schnelle <schnelle at linux.ibm.com>

BugLink: https://bugs.launchpad.net/bugs/2119650

While the zpci_dbg() macro offers a level parameter this is currently
largely unused. The only instance with higher importance than 3 is the
UID checking change debug message which is not actually more important
as the UID uniqueness guarantee is already exposed in sysfs so this
should rather be 3 as well.

On the other hand the "add ..." message which shows what devices are
visible at the lowest level is essential during problem determination.
By setting its level to 1, lowering the debug level can act as a filter
to only show the available functions.

On the error side the default level is set to 6 while all existing
messages are printed at level 0. This is inconsistent and means there is
no room for having messages be invisible on the default level so instead
set the default level to 3 like for errors matching the default for
debug messages.

Reviewed-by: Matthew Rosato <mjrosato at linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel at linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle at linux.ibm.com>
Signed-off-by: Heiko Carstens <hca at linux.ibm.com>
(cherry picked from commit 52c79e636a58da6650cec632e5e6d46467feefcb)
Signed-off-by: Massimiliano Pellizzer <massimiliano.pellizzer at canonical.com>
---
 arch/s390/pci/pci.c       | 2 +-
 arch/s390/pci/pci_clp.c   | 2 +-
 arch/s390/pci/pci_debug.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index df85aa9a64f8..9ec743ab4239 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -818,7 +818,7 @@ struct zpci_dev *zpci_create_device(u32 fid, u32 fh, enum zpci_state state)
 	struct zpci_dev *zdev;
 	int rc;
 
-	zpci_dbg(3, "add fid:%x, fh:%x, c:%d\n", fid, fh, state);
+	zpci_dbg(1, "add fid:%x, fh:%x, c:%d\n", fid, fh, state);
 	zdev = kzalloc(sizeof(*zdev), GFP_KERNEL);
 	if (!zdev)
 		return ERR_PTR(-ENOMEM);
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c
index a96b0264c14c..aad03013beac 100644
--- a/arch/s390/pci/pci_clp.c
+++ b/arch/s390/pci/pci_clp.c
@@ -29,7 +29,7 @@ bool zpci_unique_uid;
 void update_uid_checking(bool new)
 {
 	if (zpci_unique_uid != new)
-		zpci_dbg(1, "uid checking:%d\n", new);
+		zpci_dbg(3, "uid checking:%d\n", new);
 
 	zpci_unique_uid = new;
 }
diff --git a/arch/s390/pci/pci_debug.c b/arch/s390/pci/pci_debug.c
index 3408c0df3ebf..ca6bd98eec13 100644
--- a/arch/s390/pci/pci_debug.c
+++ b/arch/s390/pci/pci_debug.c
@@ -196,7 +196,7 @@ int __init zpci_debug_init(void)
 	if (!pci_debug_err_id)
 		return -EINVAL;
 	debug_register_view(pci_debug_err_id, &debug_hex_ascii_view);
-	debug_set_level(pci_debug_err_id, 6);
+	debug_set_level(pci_debug_err_id, 3);
 
 	debugfs_root = debugfs_create_dir("pci", NULL);
 	return 0;
-- 
2.48.1