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authorhselasky <hselasky@FreeBSD.org>2014-06-27 16:33:43 +0000
committerhselasky <hselasky@FreeBSD.org>2014-06-27 16:33:43 +0000
commitbd1ed65f0faa90d56aad3c8fc1b55d874d1548d9 (patch)
tree522e12e286a7e13608cc5ce25965451047b98773 /sys/amd64/pci/pci_cfgreg.c
parent465e750b1418c7bcbd18c4e34b36120ff51ae0fc (diff)
downloadFreeBSD-src-bd1ed65f0faa90d56aad3c8fc1b55d874d1548d9.zip
FreeBSD-src-bd1ed65f0faa90d56aad3c8fc1b55d874d1548d9.tar.gz
Extend the meaning of the CTLFLAG_TUN flag to automatically check if
there is an environment variable which shall initialize the SYSCTL during early boot. This works for all SYSCTL types both statically and dynamically created ones, except for the SYSCTL NODE type and SYSCTLs which belong to VNETs. A new flag, CTLFLAG_NOFETCH, has been added to be used in the case a tunable sysctl has a custom initialisation function allowing the sysctl to still be marked as a tunable. The kernel SYSCTL API is mostly the same, with a few exceptions for some special operations like iterating childrens of a static/extern SYSCTL node. This operation should probably be made into a factored out common macro, hence some device drivers use this. The reason for changing the SYSCTL API was the need for a SYSCTL parent OID pointer and not only the SYSCTL parent OID list pointer in order to quickly generate the sysctl path. The motivation behind this patch is to avoid parameter loading cludges inside the OFED driver subsystem. Instead of adding special code to the OFED driver subsystem to post-load tunables into dynamically created sysctls, we generalize this in the kernel. Other changes: - Corrected a possibly incorrect sysctl name from "hw.cbb.intr_mask" to "hw.pcic.intr_mask". - Removed redundant TUNABLE statements throughout the kernel. - Some minor code rewrites in connection to removing not needed TUNABLE statements. - Added a missing SYSCTL_DECL(). - Wrapped two very long lines. - Avoid malloc()/free() inside sysctl string handling, in case it is called to initialize a sysctl from a tunable, hence malloc()/free() is not ready when sysctls from the sysctl dataset are registered. - Bumped FreeBSD version to indicate SYSCTL API change. MFC after: 2 weeks Sponsored by: Mellanox Technologies
Diffstat (limited to 'sys/amd64/pci/pci_cfgreg.c')
-rw-r--r--sys/amd64/pci/pci_cfgreg.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/sys/amd64/pci/pci_cfgreg.c b/sys/amd64/pci/pci_cfgreg.c
index 706fdd3..0039008 100644
--- a/sys/amd64/pci/pci_cfgreg.c
+++ b/sys/amd64/pci/pci_cfgreg.c
@@ -65,7 +65,6 @@ static int pcie_minbus, pcie_maxbus;
static uint32_t pcie_badslots;
static struct mtx pcicfg_mtx;
static int mcfg_enable = 1;
-TUNABLE_INT("hw.pci.mcfg", &mcfg_enable);
SYSCTL_INT(_hw_pci, OID_AUTO, mcfg, CTLFLAG_RDTUN, &mcfg_enable, 0,
"Enable support for PCI-e memory mapped config access");
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