From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mauro Carvalho Chehab Subject: [PATCH 1/3] edac: Create an unique instance for each kobj Date: Sun, 4 Oct 2009 16:43:54 -0300 Message-ID: <20091004164354.5ff55ea1@pedra.chehab.org> References: <20090924192821.7fcffc80@pedra.chehab.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20090924192821.7fcffc80@pedra.chehab.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bluesmoke-devel-bounces@lists.sourceforge.net To: Mauro Carvalho Chehab Cc: Ingo Molnar , bluesmoke-devel@lists.sourceforge.net, Andrew Morton , linux-kernel@vger.kernel.org List-Id: edac.vger.kernel.org Current code only works when there's just one memory controller, since we need one kobj for each instance. Signed-off-by: Mauro Carvalho Chehab --- drivers/edac/edac_core.h | 21 ++++++++--- drivers/edac/edac_mc_sysfs.c | 75 +++++++++++++++++++++++++++-------------- 2 files changed, 64 insertions(+), 32 deletions(-) diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h index d035ee9..f84da6e 100644 --- a/drivers/edac/edac_core.h +++ b/drivers/edac/edac_core.h @@ -341,23 +341,29 @@ struct csrow_info { }; struct mcidev_sysfs_group { - const char *name; - struct mcidev_sysfs_attribute *mcidev_attr; - struct kobject kobj; + const char *name; /* group name */ + struct mcidev_sysfs_attribute *mcidev_attr; /* group attributes */ +}; + +struct mcidev_sysfs_group_kobj { + struct list_head list; /* list for all instances within a mc */ + + struct kobject kobj; /* kobj for the group */ + struct mcidev_sysfs_group *grp; /* group description table */ struct mem_ctl_info *mci; /* the parent */ }; - /* mcidev_sysfs_attribute structure * used for driver sysfs attributes and in mem_ctl_info * sysfs top level entries */ struct mcidev_sysfs_attribute { + /* It should use either attr or grp */ struct attribute attr; + struct mcidev_sysfs_group *grp; /* Points to a group of attributes */ - struct mcidev_sysfs_group *grp; - + /* Ops for show/store values at the attribute - not used on group */ ssize_t (*show)(struct mem_ctl_info *,char *); ssize_t (*store)(struct mem_ctl_info *, const char *,size_t); }; @@ -435,6 +441,9 @@ struct mem_ctl_info { /* edac sysfs device control */ struct kobject edac_mci_kobj; + /* list for all grp instances within a mc */ + struct list_head grp_kobj_list; + /* Additional top controller level attributes, but specified * by the low level driver. * diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index 473246b..299547c 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -729,7 +729,7 @@ void edac_mc_unregister_sysfs_main_kobj(struct mem_ctl_info *mci) #define EDAC_DEVICE_SYMLINK "device" -#define grp_to_mci(k) (container_of(k, struct mcidev_sysfs_group, kobj)->mci) +#define grp_to_mci(k) (container_of(k, struct mcidev_sysfs_group_kobj, kobj)->mci) /* MCI show/store functions for top most object */ static ssize_t inst_grp_show(struct kobject *kobj, struct attribute *attr, @@ -763,12 +763,12 @@ static ssize_t inst_grp_store(struct kobject *kobj, struct attribute *attr, /* No memory to release for this kobj */ static void edac_inst_grp_release(struct kobject *kobj) { - struct mcidev_sysfs_group *grp; + struct mcidev_sysfs_group_kobj *grp; struct mem_ctl_info *mci; debugf1("%s()\n", __func__); - grp = container_of(kobj, struct mcidev_sysfs_group, kobj); + grp = container_of(kobj, struct mcidev_sysfs_group_kobj, kobj); mci = grp->mci; kobject_put(&mci->edac_mci_kobj); @@ -803,22 +803,30 @@ static int edac_create_mci_instance_attributes(struct mem_ctl_info *mci, while (sysfs_attrib) { if (sysfs_attrib->grp) { - struct kobject *newkobj = &sysfs_attrib->grp->kobj; + struct mcidev_sysfs_group_kobj *grp_kobj; + + grp_kobj = kzalloc(sizeof(*grp_kobj), GFP_KERNEL); + if (!grp_kobj) + return -ENOMEM; + + list_add_tail(&grp_kobj->list, &mci->grp_kobj_list); + + grp_kobj->grp = sysfs_attrib->grp; + grp_kobj->mci = mci; debugf0("%s() grp %s, mci %p\n", __func__, sysfs_attrib->grp->name, mci); - sysfs_attrib->grp->mci = mci; - - err = kobject_init_and_add(newkobj, &ktype_inst_grp, + err = kobject_init_and_add(&grp_kobj->kobj, + &ktype_inst_grp, &mci->edac_mci_kobj, sysfs_attrib->grp->name); if (err) return err; err = edac_create_mci_instance_attributes(mci, - sysfs_attrib->grp->mcidev_attr, - newkobj); + grp_kobj->grp->mcidev_attr, + &grp_kobj->kobj); if (err) return err; @@ -844,25 +852,27 @@ static int edac_create_mci_instance_attributes(struct mem_ctl_info *mci, * remove MC driver specific attributes at the topmost level * directory of this mci instance. */ -static void edac_remove_mci_instance_attributes( +static void edac_remove_mci_instance_attributes(struct mem_ctl_info *mci, struct mcidev_sysfs_attribute *sysfs_attrib, - struct kobject *kobj) + struct kobject *kobj, int count) { + struct mcidev_sysfs_group_kobj *grp_kobj, *tmp; + debugf1("%s()\n", __func__); - /* loop if there are attributes and until we hit a NULL entry */ + /* + * loop if there are attributes and until we hit a NULL entry + * Remove first all the atributes + */ while (sysfs_attrib) { if (sysfs_attrib->grp) { - struct kobject *newkobj = &sysfs_attrib->grp->kobj; - - debugf0("%s() grp %s\n", __func__, - sysfs_attrib->grp->name); - - edac_remove_mci_instance_attributes( - sysfs_attrib->grp->mcidev_attr, newkobj); - - kobject_put(newkobj); - } else if (sysfs_attrib->attr.name) { + list_for_each_entry(grp_kobj, &mci->grp_kobj_list, + list) + if (grp_kobj->grp == sysfs_attrib->grp) + edac_remove_mci_instance_attributes(mci, + grp_kobj->grp->mcidev_attr, + &grp_kobj->kobj, count + 1); + } else if (sysfs_attrib->attr.name) { debugf0("%s() file %s\n", __func__, sysfs_attrib->attr.name); sysfs_remove_file(kobj, &sysfs_attrib->attr); @@ -870,6 +880,16 @@ static void edac_remove_mci_instance_attributes( break; sysfs_attrib++; } + + /* + * Now that all attributes got removed, it is save to remove all groups + */ + if (!count) + list_for_each_entry_safe(grp_kobj, tmp, &mci->grp_kobj_list, + list) { + debugf0("%s() grp %s\n", __func__, grp_kobj->grp->name); + kobject_put(&grp_kobj->kobj); + } } @@ -890,6 +910,8 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) debugf0("%s() idx=%d\n", __func__, mci->mc_idx); + INIT_LIST_HEAD(&mci->grp_kobj_list); + /* create a symlink for the device */ err = sysfs_create_link(kobj_mci, &mci->dev->kobj, EDAC_DEVICE_SYMLINK); @@ -939,8 +961,8 @@ fail1: } /* remove the mci instance's attributes, if any */ - edac_remove_mci_instance_attributes( - mci->mc_driver_sysfs_attributes, &mci->edac_mci_kobj); + edac_remove_mci_instance_attributes(mci, + mci->mc_driver_sysfs_attributes, &mci->edac_mci_kobj, 0); /* remove the symlink */ sysfs_remove_link(kobj_mci, EDAC_DEVICE_SYMLINK); @@ -974,8 +996,9 @@ void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) debugf0("%s() remove_mci_instance\n", __func__); /* remove this mci instance's attribtes */ - edac_remove_mci_instance_attributes(mci->mc_driver_sysfs_attributes, - &mci->edac_mci_kobj); + edac_remove_mci_instance_attributes(mci, + mci->mc_driver_sysfs_attributes, + &mci->edac_mci_kobj, 0); debugf0("%s() unregister this mci kobj\n", __func__); /* unregister this instance's kobject * -- Cheers, Mauro ------------------------------------------------------------------------------ Come build with us! 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