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Date: Tue, 24 Jan 2017 00:51:05 -0800
From: tip-bot for Borislav Petkov <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: torvalds@...ux-foundation.org, tony.luck@...el.com,
peterz@...radead.org, tglx@...utronix.de, mingo@...nel.org,
linux-kernel@...r.kernel.org, hpa@...or.com, bp@...e.de,
Yazen.Ghannam@....com, linux-edac@...r.kernel.org
Subject: [tip:ras/core] x86/ras, EDAC, acpi: Assign MCE notifier handlers a
priority
Commit-ID: 9026cc82b632ed1a859935c82ed8ad65f27f2781
Gitweb: http://git.kernel.org/tip/9026cc82b632ed1a859935c82ed8ad65f27f2781
Author: Borislav Petkov <bp@...e.de>
AuthorDate: Mon, 23 Jan 2017 19:35:14 +0100
Committer: Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 24 Jan 2017 09:14:57 +0100
x86/ras, EDAC, acpi: Assign MCE notifier handlers a priority
Assign all notifiers on the MCE decode chain a priority so that they get
called in the correct order.
Suggested-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Yazen Ghannam <Yazen.Ghannam@....com>
Cc: linux-edac <linux-edac@...r.kernel.org>
Link: http://lkml.kernel.org/r/20170123183514.13356-10-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
arch/x86/include/asm/mce.h | 9 +++++++++
arch/x86/kernel/cpu/mcheck/mce.c | 8 +++-----
drivers/acpi/acpi_extlog.c | 1 +
drivers/acpi/nfit/mce.c | 1 +
drivers/edac/i7core_edac.c | 1 +
drivers/edac/mce_amd.c | 1 +
drivers/edac/sb_edac.c | 3 ++-
drivers/edac/skx_edac.c | 3 ++-
8 files changed, 20 insertions(+), 7 deletions(-)
diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index 528f6ec..e638736 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -189,6 +189,15 @@ extern struct mce_vendor_flags mce_flags;
extern struct mca_config mca_cfg;
extern struct mca_msr_regs msr_ops;
+
+enum mce_notifier_prios {
+ MCE_PRIO_SRAO = INT_MAX,
+ MCE_PRIO_EXTLOG = INT_MAX - 1,
+ MCE_PRIO_NFIT = INT_MAX - 2,
+ MCE_PRIO_EDAC = INT_MAX - 3,
+ MCE_PRIO_LOWEST = 0,
+};
+
extern void mce_register_decode_chain(struct notifier_block *nb);
extern void mce_unregister_decode_chain(struct notifier_block *nb);
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 0fef540..e39bbc0 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -216,9 +216,7 @@ void mce_register_decode_chain(struct notifier_block *nb)
{
atomic_inc(&num_notifiers);
- /* Ensure SRAO notifier has the highest priority in the decode chain. */
- if (nb != &mce_srao_nb && nb->priority == INT_MAX)
- nb->priority -= 1;
+ WARN_ON(nb->priority > MCE_PRIO_LOWEST && nb->priority < MCE_PRIO_EDAC);
atomic_notifier_chain_register(&x86_mce_decoder_chain, nb);
}
@@ -582,7 +580,7 @@ static int srao_decode_notifier(struct notifier_block *nb, unsigned long val,
}
static struct notifier_block mce_srao_nb = {
.notifier_call = srao_decode_notifier,
- .priority = INT_MAX,
+ .priority = MCE_PRIO_SRAO,
};
static int mce_default_notifier(struct notifier_block *nb, unsigned long val,
@@ -608,7 +606,7 @@ static int mce_default_notifier(struct notifier_block *nb, unsigned long val,
static struct notifier_block mce_default_nb = {
.notifier_call = mce_default_notifier,
/* lowest prio, we want it to run last. */
- .priority = 0,
+ .priority = MCE_PRIO_LOWEST,
};
/*
diff --git a/drivers/acpi/acpi_extlog.c b/drivers/acpi/acpi_extlog.c
index b3842ff..a15270a 100644
--- a/drivers/acpi/acpi_extlog.c
+++ b/drivers/acpi/acpi_extlog.c
@@ -212,6 +212,7 @@ static bool __init extlog_get_l1addr(void)
}
static struct notifier_block extlog_mce_dec = {
.notifier_call = extlog_print,
+ .priority = MCE_PRIO_EXTLOG,
};
static int __init extlog_init(void)
diff --git a/drivers/acpi/nfit/mce.c b/drivers/acpi/nfit/mce.c
index e5ce81c..3ba1c34 100644
--- a/drivers/acpi/nfit/mce.c
+++ b/drivers/acpi/nfit/mce.c
@@ -90,6 +90,7 @@ static int nfit_handle_mce(struct notifier_block *nb, unsigned long val,
static struct notifier_block nfit_mce_dec = {
.notifier_call = nfit_handle_mce,
+ .priority = MCE_PRIO_NFIT,
};
void nfit_mce_register(void)
diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
index 69b5ade..75ad847 100644
--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -1835,6 +1835,7 @@ static int i7core_mce_check_error(struct notifier_block *nb, unsigned long val,
static struct notifier_block i7_mce_dec = {
.notifier_call = i7core_mce_check_error,
+ .priority = MCE_PRIO_EDAC,
};
struct memdev_dmi_entry {
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index ecad750..0d9bc25 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -1054,6 +1054,7 @@ amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data)
static struct notifier_block amd_mce_dec_nb = {
.notifier_call = amd_decode_mce,
+ .priority = MCE_PRIO_EDAC,
};
static int __init mce_amd_init(void)
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 54ae6dc..c585a01 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -3136,7 +3136,8 @@ static int sbridge_mce_check_error(struct notifier_block *nb, unsigned long val,
}
static struct notifier_block sbridge_mce_dec = {
- .notifier_call = sbridge_mce_check_error,
+ .notifier_call = sbridge_mce_check_error,
+ .priority = MCE_PRIO_EDAC,
};
/****************************************************************************
diff --git a/drivers/edac/skx_edac.c b/drivers/edac/skx_edac.c
index 79ef675..1159dba 100644
--- a/drivers/edac/skx_edac.c
+++ b/drivers/edac/skx_edac.c
@@ -1007,7 +1007,8 @@ static int skx_mce_check_error(struct notifier_block *nb, unsigned long val,
}
static struct notifier_block skx_mce_dec = {
- .notifier_call = skx_mce_check_error,
+ .notifier_call = skx_mce_check_error,
+ .priority = MCE_PRIO_EDAC,
};
static void skx_remove(void)
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