| Message ID | 20220822154048.188253-6-justin.he@arm.com |
|---|---|
| State | New |
| Headers | show |
| Series | Make ghes_edac a proper module | expand |
On Monday, August 22, 2022 9:41 AM, Jia He wrote: > diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c > index e17e0ee8f842..327386f3cf33 100644 > --- a/drivers/acpi/apei/ghes.c > +++ b/drivers/acpi/apei/ghes.c > @@ -1537,16 +1537,25 @@ static struct acpi_platform_list plat_list[] = { > { } /* End */ > }; > > -struct list_head *ghes_get_devices(void) > +bool ghes_edac_preferred(void) > { > int idx = -1; > > if (IS_ENABLED(CONFIG_X86)) { > idx = acpi_match_platform_list(plat_list); > if (idx < 0 && !ghes_edac_force) > - return NULL; > + return false; > } > > + return true; > +} > +EXPORT_SYMBOL_GPL(ghes_edac_preferred); > + > +struct list_head *ghes_get_devices(void) > +{ > + if (!ghes_edac_preferred()) > + return NULL; > + > return &ghes_devs; > } ghes_get_devices() changing multiple times in the series is confusing to me. Can you simply introduce ghes_get_devices() and ghes_preferred() in the right state in a patch? Perhaps, patch #2, #5, #6 can collapse to introduce the two funcs? The rest of patch #5 adding the call to ghes_edac_preferred() into other edac drivers can remain as a separate patch. Toshi
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index e17e0ee8f842..327386f3cf33 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -1537,16 +1537,25 @@ static struct acpi_platform_list plat_list[] = { { } /* End */ }; -struct list_head *ghes_get_devices(void) +bool ghes_edac_preferred(void) { int idx = -1; if (IS_ENABLED(CONFIG_X86)) { idx = acpi_match_platform_list(plat_list); if (idx < 0 && !ghes_edac_force) - return NULL; + return false; } + return true; +} +EXPORT_SYMBOL_GPL(ghes_edac_preferred); + +struct list_head *ghes_get_devices(void) +{ + if (!ghes_edac_preferred()) + return NULL; + return &ghes_devs; } EXPORT_SYMBOL_GPL(ghes_get_devices); diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 2f854feeeb23..5314a934c2bf 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -4329,6 +4329,9 @@ static int __init amd64_edac_init(void) int err = -ENODEV; int i; + if (ghes_edac_preferred()) + return -EBUSY; + owner = edac_get_owner(); if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR))) return -EBUSY; diff --git a/drivers/edac/edac_module.h b/drivers/edac/edac_module.h index 96f6de0c8ff6..3826f82de487 100644 --- a/drivers/edac/edac_module.h +++ b/drivers/edac/edac_module.h @@ -11,6 +11,7 @@ #ifndef __EDAC_MODULE_H__ #define __EDAC_MODULE_H__ +#include <acpi/ghes.h> #include "edac_mc.h" #include "edac_pci.h" #include "edac_device.h" diff --git a/drivers/edac/i10nm_base.c b/drivers/edac/i10nm_base.c index 6cf50ee0b77c..691df9b51622 100644 --- a/drivers/edac/i10nm_base.c +++ b/drivers/edac/i10nm_base.c @@ -548,6 +548,9 @@ static int __init i10nm_init(void) edac_dbg(2, "\n"); + if (ghes_edac_preferred()) + return -EBUSY; + owner = edac_get_owner(); if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR))) return -EBUSY; diff --git a/drivers/edac/igen6_edac.c b/drivers/edac/igen6_edac.c index a07bbfd075d0..4ac6d0c533ec 100644 --- a/drivers/edac/igen6_edac.c +++ b/drivers/edac/igen6_edac.c @@ -1271,6 +1271,9 @@ static int __init igen6_init(void) edac_dbg(2, "\n"); + if (ghes_edac_preferred()) + return -EBUSY; + owner = edac_get_owner(); if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR))) return -ENODEV; diff --git a/drivers/edac/pnd2_edac.c b/drivers/edac/pnd2_edac.c index a20b299f1202..4ddc43e6c420 100644 --- a/drivers/edac/pnd2_edac.c +++ b/drivers/edac/pnd2_edac.c @@ -1528,6 +1528,9 @@ static int __init pnd2_init(void) edac_dbg(2, "\n"); + if (ghes_edac_preferred()) + return -EBUSY; + owner = edac_get_owner(); if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR))) return -EBUSY; diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c index 9678ab97c7ac..3ff604a5e95a 100644 --- a/drivers/edac/sb_edac.c +++ b/drivers/edac/sb_edac.c @@ -3506,6 +3506,9 @@ static int __init sbridge_init(void) edac_dbg(2, "\n"); + if (ghes_edac_preferred()) + return -EBUSY; + owner = edac_get_owner(); if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR))) return -EBUSY; diff --git a/drivers/edac/skx_base.c b/drivers/edac/skx_base.c index 1abc020d49ab..286370728552 100644 --- a/drivers/edac/skx_base.c +++ b/drivers/edac/skx_base.c @@ -653,6 +653,9 @@ static int __init skx_init(void) edac_dbg(2, "\n"); + if (ghes_edac_preferred()) + return -EBUSY; + owner = edac_get_owner(); if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR))) return -EBUSY; diff --git a/include/acpi/ghes.h b/include/acpi/ghes.h index e29327ee0b83..1c47018a1e43 100644 --- a/include/acpi/ghes.h +++ b/include/acpi/ghes.h @@ -73,9 +73,11 @@ int ghes_register_vendor_record_notifier(struct notifier_block *nb); void ghes_unregister_vendor_record_notifier(struct notifier_block *nb); struct list_head *ghes_get_devices(void); +bool ghes_edac_preferred(void); extern bool ghes_edac_force; #else static inline struct list_head *ghes_get_devices(void) { return NULL; } +static bool ghes_edac_preferred(void) { return false; } static bool ghes_edac_force; #endif
edac_mc_add_mc* is too late in the init path and that check should happen as the very first thing in the driver init function. Suggested-by: Toshi Kani <toshi.kani@hpe.com> Signed-off-by: Jia He <justin.he@arm.com> --- drivers/acpi/apei/ghes.c | 13 +++++++++++-- drivers/edac/amd64_edac.c | 3 +++ drivers/edac/edac_module.h | 1 + drivers/edac/i10nm_base.c | 3 +++ drivers/edac/igen6_edac.c | 3 +++ drivers/edac/pnd2_edac.c | 3 +++ drivers/edac/sb_edac.c | 3 +++ drivers/edac/skx_base.c | 3 +++ include/acpi/ghes.h | 2 ++ 9 files changed, 32 insertions(+), 2 deletions(-)