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authorDavid S. Miller <davem@davemloft.net>2017-04-27 04:39:08 +0200
committerDavid S. Miller <davem@davemloft.net>2017-04-27 04:39:08 +0200
commitb1513c35317c106a1588f3ab32f6888f0e2afd71 (patch)
treeb2cd68a0d34dd04eb89fcf28e173e5ee22f898fd /arch
parentvirtio-net: on tx, only call napi_disable if tx napi is on (diff)
parentMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc (diff)
downloadlinux-b1513c35317c106a1588f3ab32f6888f0e2afd71.tar.xz
linux-b1513c35317c106a1588f3ab32f6888f0e2afd71.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch')
-rw-r--r--arch/arc/Kconfig8
-rw-r--r--arch/arc/include/asm/atomic.h3
-rw-r--r--arch/arc/include/asm/entry-arcv2.h10
-rw-r--r--arch/arc/include/asm/ptrace.h4
-rw-r--r--arch/arc/kernel/setup.c30
-rw-r--r--arch/mips/Makefile6
-rw-r--r--arch/mips/include/asm/asm-prototypes.h1
-rw-r--r--arch/mips/kernel/cevt-r4k.c2
-rw-r--r--arch/mips/kernel/elf.c2
-rw-r--r--arch/mips/kernel/kgdb.c48
-rw-r--r--arch/mips/kernel/perf_event_mipsxx.c9
-rw-r--r--arch/mips/kernel/relocate.c2
-rw-r--r--arch/mips/kernel/smp-cps.c3
-rw-r--r--arch/mips/mti-malta/malta-int.c11
-rw-r--r--arch/mips/pci/pci-legacy.c2
-rw-r--r--arch/sparc/Kconfig1
-rw-r--r--arch/sparc/include/asm/ptrace.h3
-rw-r--r--arch/sparc/include/uapi/asm/unistd.h8
-rw-r--r--arch/sparc/kernel/ptrace_64.c36
-rw-r--r--arch/sparc/kernel/systbls_32.S1
-rw-r--r--arch/sparc/kernel/systbls_64.S2
-rw-r--r--arch/x86/kernel/cpu/mcheck/mce-genpool.c2
-rw-r--r--arch/x86/kernel/cpu/mcheck/mce-internal.h2
-rw-r--r--arch/x86/kernel/cpu/mcheck/mce.c17
24 files changed, 157 insertions, 56 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index c9f30f4763ab..5d7fb3e7cb97 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -406,6 +406,14 @@ config ARC_HAS_DIV_REM
bool "Insn: div, divu, rem, remu"
default y
+config ARC_HAS_ACCL_REGS
+ bool "Reg Pair ACCL:ACCH (FPU and/or MPY > 6)"
+ default n
+ help
+ Depending on the configuration, CPU can contain accumulator reg-pair
+ (also referred to as r58:r59). These can also be used by gcc as GPR so
+ kernel needs to save/restore per process
+
endif # ISA_ARCV2
endmenu # "ARC CPU Configuration"
diff --git a/arch/arc/include/asm/atomic.h b/arch/arc/include/asm/atomic.h
index b65930a49589..54b54da6384c 100644
--- a/arch/arc/include/asm/atomic.h
+++ b/arch/arc/include/asm/atomic.h
@@ -17,10 +17,11 @@
#include <asm/barrier.h>
#include <asm/smp.h>
+#define ATOMIC_INIT(i) { (i) }
+
#ifndef CONFIG_ARC_PLAT_EZNPS
#define atomic_read(v) READ_ONCE((v)->counter)
-#define ATOMIC_INIT(i) { (i) }
#ifdef CONFIG_ARC_HAS_LLSC
diff --git a/arch/arc/include/asm/entry-arcv2.h b/arch/arc/include/asm/entry-arcv2.h
index aee1a77934cf..ac85380d14a4 100644
--- a/arch/arc/include/asm/entry-arcv2.h
+++ b/arch/arc/include/asm/entry-arcv2.h
@@ -16,6 +16,11 @@
;
; Now manually save: r12, sp, fp, gp, r25
+#ifdef CONFIG_ARC_HAS_ACCL_REGS
+ PUSH r59
+ PUSH r58
+#endif
+
PUSH r30
PUSH r12
@@ -75,6 +80,11 @@
POP r12
POP r30
+#ifdef CONFIG_ARC_HAS_ACCL_REGS
+ POP r58
+ POP r59
+#endif
+
.endm
/*------------------------------------------------------------------------*/
diff --git a/arch/arc/include/asm/ptrace.h b/arch/arc/include/asm/ptrace.h
index 47111d565a95..5297faa8a378 100644
--- a/arch/arc/include/asm/ptrace.h
+++ b/arch/arc/include/asm/ptrace.h
@@ -86,6 +86,10 @@ struct pt_regs {
unsigned long r12, r30;
+#ifdef CONFIG_ARC_HAS_ACCL_REGS
+ unsigned long r58, r59; /* ACCL/ACCH used by FPU / DSP MPY */
+#endif
+
/*------- Below list auto saved by h/w -----------*/
unsigned long r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11;
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index fa62404ba58f..fc8211f338ad 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -319,7 +319,8 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len)
static void arc_chk_core_config(void)
{
struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
- int fpu_enabled;
+ int saved = 0, present = 0;
+ char *opt_nm = NULL;;
if (!cpu->extn.timer0)
panic("Timer0 is not present!\n");
@@ -346,17 +347,28 @@ static void arc_chk_core_config(void)
/*
* FP hardware/software config sanity
- * -If hardware contains DPFP, kernel needs to save/restore FPU state
+ * -If hardware present, kernel needs to save/restore FPU state
* -If not, it will crash trying to save/restore the non-existant regs
- *
- * (only DPDP checked since SP has no arch visible regs)
*/
- fpu_enabled = IS_ENABLED(CONFIG_ARC_FPU_SAVE_RESTORE);
- if (cpu->extn.fpu_dp && !fpu_enabled)
- pr_warn("CONFIG_ARC_FPU_SAVE_RESTORE needed for working apps\n");
- else if (!cpu->extn.fpu_dp && fpu_enabled)
- panic("FPU non-existent, disable CONFIG_ARC_FPU_SAVE_RESTORE\n");
+ if (is_isa_arcompact()) {
+ opt_nm = "CONFIG_ARC_FPU_SAVE_RESTORE";
+ saved = IS_ENABLED(CONFIG_ARC_FPU_SAVE_RESTORE);
+
+ /* only DPDP checked since SP has no arch visible regs */
+ present = cpu->extn.fpu_dp;
+ } else {
+ opt_nm = "CONFIG_ARC_HAS_ACCL_REGS";
+ saved = IS_ENABLED(CONFIG_ARC_HAS_ACCL_REGS);
+
+ /* Accumulator Low:High pair (r58:59) present if DSP MPY or FPU */
+ present = cpu->extn_mpy.dsp | cpu->extn.fpu_sp | cpu->extn.fpu_dp;
+ }
+
+ if (present && !saved)
+ pr_warn("Enable %s for working apps\n", opt_nm);
+ else if (!present && saved)
+ panic("Disable %s, hardware NOT present\n", opt_nm);
}
/*
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 8ef9c02747fa..02a1787c888c 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -489,7 +489,7 @@ $(generic_defconfigs):
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ \
$(foreach board,$(BOARDS),$(generic_config_dir)/board-$(board).config)
- $(Q)$(MAKE) olddefconfig
+ $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
#
# Prevent generic merge_config rules attempting to merge single fragments
@@ -503,8 +503,8 @@ $(generic_config_dir)/%.config: ;
#
.PHONY: sead3_defconfig
sead3_defconfig:
- $(Q)$(MAKE) 32r2el_defconfig BOARDS=sead-3
+ $(Q)$(MAKE) -f $(srctree)/Makefile 32r2el_defconfig BOARDS=sead-3
.PHONY: sead3micro_defconfig
sead3micro_defconfig:
- $(Q)$(MAKE) micro32r2el_defconfig BOARDS=sead-3
+ $(Q)$(MAKE) -f $(srctree)/Makefile micro32r2el_defconfig BOARDS=sead-3
diff --git a/arch/mips/include/asm/asm-prototypes.h b/arch/mips/include/asm/asm-prototypes.h
index a160cf69bb92..6e28971fe73a 100644
--- a/arch/mips/include/asm/asm-prototypes.h
+++ b/arch/mips/include/asm/asm-prototypes.h
@@ -3,3 +3,4 @@
#include <asm/fpu.h>
#include <asm-generic/asm-prototypes.h>
#include <asm/uaccess.h>
+#include <asm/ftrace.h>
diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c
index 804d2a2a19fe..dd6a18bc10ab 100644
--- a/arch/mips/kernel/cevt-r4k.c
+++ b/arch/mips/kernel/cevt-r4k.c
@@ -80,7 +80,7 @@ static unsigned int calculate_min_delta(void)
}
/* Sorted insert of 75th percentile into buf2 */
- for (k = 0; k < i; ++k) {
+ for (k = 0; k < i && k < ARRAY_SIZE(buf2); ++k) {
if (buf1[ARRAY_SIZE(buf1) - 1] < buf2[k]) {
l = min_t(unsigned int,
i, ARRAY_SIZE(buf2) - 1);
diff --git a/arch/mips/kernel/elf.c b/arch/mips/kernel/elf.c
index 6430bff21fff..5c429d70e17f 100644
--- a/arch/mips/kernel/elf.c
+++ b/arch/mips/kernel/elf.c
@@ -257,7 +257,7 @@ int arch_check_elf(void *_ehdr, bool has_interpreter, void *_interp_ehdr,
else if ((prog_req.fr1 && prog_req.frdefault) ||
(prog_req.single && !prog_req.frdefault))
/* Make sure 64-bit MIPS III/IV/64R1 will not pick FR1 */
- state->overall_fp_mode = ((current_cpu_data.fpu_id & MIPS_FPIR_F64) &&
+ state->overall_fp_mode = ((raw_current_cpu_data.fpu_id & MIPS_FPIR_F64) &&
cpu_has_mips_r2_r6) ?
FP_FR1 : FP_FR0;
else if (prog_req.fr1)
diff --git a/arch/mips/kernel/kgdb.c b/arch/mips/kernel/kgdb.c
index 1f4bd222ba76..eb6c0d582626 100644
--- a/arch/mips/kernel/kgdb.c
+++ b/arch/mips/kernel/kgdb.c
@@ -244,9 +244,6 @@ static int compute_signal(int tt)
void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
{
int reg;
- struct thread_info *ti = task_thread_info(p);
- unsigned long ksp = (unsigned long)ti + THREAD_SIZE - 32;
- struct pt_regs *regs = (struct pt_regs *)ksp - 1;
#if (KGDB_GDB_REG_SIZE == 32)
u32 *ptr = (u32 *)gdb_regs;
#else
@@ -254,25 +251,46 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
#endif
for (reg = 0; reg < 16; reg++)
- *(ptr++) = regs->regs[reg];
+ *(ptr++) = 0;
/* S0 - S7 */
- for (reg = 16; reg < 24; reg++)
- *(ptr++) = regs->regs[reg];
+ *(ptr++) = p->thread.reg16;
+ *(ptr++) = p->thread.reg17;
+ *(ptr++) = p->thread.reg18;
+ *(ptr++) = p->thread.reg19;
+ *(ptr++) = p->thread.reg20;
+ *(ptr++) = p->thread.reg21;
+ *(ptr++) = p->thread.reg22;
+ *(ptr++) = p->thread.reg23;
for (reg = 24; reg < 28; reg++)
*(ptr++) = 0;
/* GP, SP, FP, RA */
- for (reg = 28; reg < 32; reg++)
- *(ptr++) = regs->regs[reg];
-
- *(ptr++) = regs->cp0_status;
- *(ptr++) = regs->lo;
- *(ptr++) = regs->hi;
- *(ptr++) = regs->cp0_badvaddr;
- *(ptr++) = regs->cp0_cause;
- *(ptr++) = regs->cp0_epc;
+ *(ptr++) = (long)p;
+ *(ptr++) = p->thread.reg29;
+ *(ptr++) = p->thread.reg30;
+ *(ptr++) = p->thread.reg31;
+
+ *(ptr++) = p->thread.cp0_status;
+
+ /* lo, hi */
+ *(ptr++) = 0;
+ *(ptr++) = 0;
+
+ /*
+ * BadVAddr, Cause
+ * Ideally these would come from the last exception frame up the stack
+ * but that requires unwinding, otherwise we can't know much for sure.
+ */
+ *(ptr++) = 0;
+ *(ptr++) = 0;
+
+ /*
+ * PC
+ * use return address (RA), i.e. the moment after return from resume()
+ */
+ *(ptr++) = p->thread.reg31;
}
void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long pc)
diff --git a/arch/mips/kernel/perf_event_mipsxx.c b/arch/mips/kernel/perf_event_mipsxx.c
index 8c35b3152e1e..9452b02ce079 100644
--- a/arch/mips/kernel/perf_event_mipsxx.c
+++ b/arch/mips/kernel/perf_event_mipsxx.c
@@ -1446,6 +1446,11 @@ static int mipsxx_pmu_handle_shared_irq(void)
HANDLE_COUNTER(0)
}
+#ifdef CONFIG_MIPS_PERF_SHARED_TC_COUNTERS
+ read_unlock(&pmuint_rwlock);
+#endif
+ resume_local_counters();
+
/*
* Do all the work for the pending perf events. We can do this
* in here because the performance counter interrupt is a regular
@@ -1454,10 +1459,6 @@ static int mipsxx_pmu_handle_shared_irq(void)
if (handled == IRQ_HANDLED)
irq_work_run();
-#ifdef CONFIG_MIPS_PERF_SHARED_TC_COUNTERS
- read_unlock(&pmuint_rwlock);
-#endif
- resume_local_counters();
return handled;
}
diff --git a/arch/mips/kernel/relocate.c b/arch/mips/kernel/relocate.c
index 9103bebc9a8e..2d1a0c438771 100644
--- a/arch/mips/kernel/relocate.c
+++ b/arch/mips/kernel/relocate.c
@@ -18,7 +18,7 @@
#include <linux/kernel.h>
#include <linux/libfdt.h>
#include <linux/of_fdt.h>
-#include <linux/sched.h>
+#include <linux/sched/task.h>
#include <linux/start_kernel.h>
#include <linux/string.h>
#include <linux/printk.h>
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c
index 6d45f05538c8..795b4aaf8927 100644
--- a/arch/mips/kernel/smp-cps.c
+++ b/arch/mips/kernel/smp-cps.c
@@ -422,13 +422,12 @@ void play_dead(void)
local_irq_disable();
idle_task_exit();
cpu = smp_processor_id();
+ core = cpu_data[cpu].core;
cpu_death = CPU_DEATH_POWER;
pr_debug("CPU%d going offline\n", cpu);
if (cpu_has_mipsmt || cpu_has_vp) {
- core = cpu_data[cpu].core;
-
/* Look for another online VPE within the core */
for_each_online_cpu(cpu_death_sibling) {
if (cpu_data[cpu_death_sibling].core != core)
diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c
index cb675ec6f283..54f56d5a96c4 100644
--- a/arch/mips/mti-malta/malta-int.c
+++ b/arch/mips/mti-malta/malta-int.c
@@ -232,6 +232,17 @@ void __init arch_init_irq(void)
{
int corehi_irq;
+ /*
+ * Preallocate the i8259's expected virq's here. Since irqchip_init()
+ * will probe the irqchips in hierarchial order, i8259 is probed last.
+ * If anything allocates a virq before the i8259 is probed, it will
+ * be given one of the i8259's expected range and consequently setup
+ * of the i8259 will fail.
+ */
+ WARN(irq_alloc_descs(I8259A_IRQ_BASE, I8259A_IRQ_BASE,
+ 16, numa_node_id()) < 0,
+ "Cannot reserve i8259 virqs at IRQ%d\n", I8259A_IRQ_BASE);
+
i8259_set_poll(mips_pcibios_iack);
irqchip_init();
diff --git a/arch/mips/pci/pci-legacy.c b/arch/mips/pci/pci-legacy.c
index 014649be158d..3a84f6c0c840 100644
--- a/arch/mips/pci/pci-legacy.c
+++ b/arch/mips/pci/pci-legacy.c
@@ -190,7 +190,7 @@ void register_pci_controller(struct pci_controller *hose)
}
INIT_LIST_HEAD(&hose->list);
- list_add(&hose->list, &controllers);
+ list_add_tail(&hose->list, &controllers);
/*
* Do not panic here but later - this might happen before console init.
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 7b16251b7476..d8c7736d2d59 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -83,6 +83,7 @@ config SPARC64
select HAVE_ARCH_AUDITSYSCALL
select ARCH_SUPPORTS_ATOMIC_RMW
select HAVE_NMI
+ select HAVE_REGS_AND_STACK_ACCESS_API
config ARCH_DEFCONFIG
string
diff --git a/arch/sparc/include/asm/ptrace.h b/arch/sparc/include/asm/ptrace.h
index ca57f08bd3db..d73428e4333c 100644
--- a/arch/sparc/include/asm/ptrace.h
+++ b/arch/sparc/include/asm/ptrace.h
@@ -83,7 +83,8 @@ unsigned long profile_pc(struct pt_regs *);
#define MAX_REG_OFFSET (offsetof(struct pt_regs, magic))
-extern int regs_query_register_offset(const char *name);
+int regs_query_register_offset(const char *name);
+unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
/**
* regs_get_register() - get register value from its offset
diff --git a/arch/sparc/include/uapi/asm/unistd.h b/arch/sparc/include/uapi/asm/unistd.h
index 36eee8132c22..ae77df75bffa 100644
--- a/arch/sparc/include/uapi/asm/unistd.h
+++ b/arch/sparc/include/uapi/asm/unistd.h
@@ -425,8 +425,9 @@
#define __NR_copy_file_range 357
#define __NR_preadv2 358
#define __NR_pwritev2 359
+#define __NR_statx 360
-#define NR_syscalls 360
+#define NR_syscalls 361
/* Bitmask values returned from kern_features system call. */
#define KERN_FEATURE_MIXED_MODE_STACK 0x00000001
@@ -442,4 +443,9 @@
#define __IGNORE_getresgid
#endif
+/* Sparc doesn't have protection keys. */
+#define __IGNORE_pkey_mprotect
+#define __IGNORE_pkey_alloc
+#define __IGNORE_pkey_free
+
#endif /* _UAPI_SPARC_UNISTD_H */
diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
index fc5124ccdb53..e1d965e90e16 100644
--- a/arch/sparc/kernel/ptrace_64.c
+++ b/arch/sparc/kernel/ptrace_64.c
@@ -1162,3 +1162,39 @@ int regs_query_register_offset(const char *name)
return roff->offset;
return -EINVAL;
}
+
+/**
+ * regs_within_kernel_stack() - check the address in the stack
+ * @regs: pt_regs which contains kernel stack pointer.
+ * @addr: address which is checked.
+ *
+ * regs_within_kernel_stack() checks @addr is within the kernel stack page(s).
+ * If @addr is within the kernel stack, it returns true. If not, returns false.
+ */
+static inline int regs_within_kernel_stack(struct pt_regs *regs,
+ unsigned long addr)
+{
+ unsigned long ksp = kernel_stack_pointer(regs) + STACK_BIAS;
+ return ((addr & ~(THREAD_SIZE - 1)) ==
+ (ksp & ~(THREAD_SIZE - 1)));
+}
+
+/**
+ * regs_get_kernel_stack_nth() - get Nth entry of the stack
+ * @regs: pt_regs which contains kernel stack pointer.
+ * @n: stack entry number.
+ *
+ * regs_get_kernel_stack_nth() returns @n th entry of the kernel stack which
+ * is specified by @regs. If the @n th entry is NOT in the kernel stack,
+ * this returns 0.
+ */
+unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n)
+{
+ unsigned long ksp = kernel_stack_pointer(regs) + STACK_BIAS;
+ unsigned long *addr = (unsigned long *)ksp;
+ addr += n;
+ if (regs_within_kernel_stack(regs, (unsigned long)addr))
+ return *addr;
+ else
+ return 0;
+}
diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S
index eac7f0db5c8c..5253e895b81b 100644
--- a/arch/sparc/kernel/systbls_32.S
+++ b/arch/sparc/kernel/systbls_32.S
@@ -89,3 +89,4 @@ sys_call_table:
/*345*/ .long sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
/*350*/ .long sys_execveat, sys_membarrier, sys_userfaultfd, sys_bind, sys_listen
/*355*/ .long sys_setsockopt, sys_mlock2, sys_copy_file_range, sys_preadv2, sys_pwritev2
+/*360*/ .long sys_statx
diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S
index b0f17ff2ddba..82339f6be0b2 100644
--- a/arch/sparc/kernel/systbls_64.S
+++ b/arch/sparc/kernel/systbls_64.S
@@ -90,6 +90,7 @@ sys_call_table32:
.word sys32_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
/*350*/ .word sys32_execveat, sys_membarrier, sys_userfaultfd, sys_bind, sys_listen
.word compat_sys_setsockopt, sys_mlock2, sys_copy_file_range, compat_sys_preadv2, compat_sys_pwritev2
+/*360*/ .word sys_statx
#endif /* CONFIG_COMPAT */
@@ -171,3 +172,4 @@ sys_call_table:
.word sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf
/*350*/ .word sys64_execveat, sys_membarrier, sys_userfaultfd, sys_bind, sys_listen
.word sys_setsockopt, sys_mlock2, sys_copy_file_range, sys_preadv2, sys_pwritev2
+/*360*/ .word sys_statx
diff --git a/arch/x86/kernel/cpu/mcheck/mce-genpool.c b/arch/x86/kernel/cpu/mcheck/mce-genpool.c
index 1e5a50c11d3c..217cd4449bc9 100644
--- a/arch/x86/kernel/cpu/mcheck/mce-genpool.c
+++ b/arch/x86/kernel/cpu/mcheck/mce-genpool.c
@@ -85,7 +85,7 @@ void mce_gen_pool_process(struct work_struct *__unused)
head = llist_reverse_order(head);
llist_for_each_entry_safe(node, tmp, head, llnode) {
mce = &node->mce;
- atomic_notifier_call_chain(&x86_mce_decoder_chain, 0, mce);
+ blocking_notifier_call_chain(&x86_mce_decoder_chain, 0, mce);
gen_pool_free(mce_evt_pool, (unsigned long)node, sizeof(*node));
}
}
diff --git a/arch/x86/kernel/cpu/mcheck/mce-internal.h b/arch/x86/kernel/cpu/mcheck/mce-internal.h
index 903043e6a62b..19592ba1a320 100644
--- a/arch/x86/kernel/cpu/mcheck/mce-internal.h
+++ b/arch/x86/kernel/cpu/mcheck/mce-internal.h
@@ -13,7 +13,7 @@ enum severity_level {
MCE_PANIC_SEVERITY,
};
-extern struct atomic_notifier_head x86_mce_decoder_chain;
+extern struct blocking_notifier_head x86_mce_decoder_chain;
#define ATTR_LEN 16
#define INITIAL_CHECK_INTERVAL 5 * 60 /* 5 minutes */
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 5accfbdee3f0..af44ebeb593f 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -123,7 +123,7 @@ static void (*quirk_no_way_out)(int bank, struct mce *m, struct pt_regs *regs);
* CPU/chipset specific EDAC code can register a notifier call here to print
* MCE errors in a human-readable form.
*/
-ATOMIC_NOTIFIER_HEAD(x86_mce_decoder_chain);
+BLOCKING_NOTIFIER_HEAD(x86_mce_decoder_chain);
/* Do initial initialization of a struct mce */
void mce_setup(struct mce *m)
@@ -220,7 +220,7 @@ void mce_register_decode_chain(struct notifier_block *nb)
WARN_ON(nb->priority > MCE_PRIO_LOWEST && nb->priority < MCE_PRIO_EDAC);
- atomic_notifier_chain_register(&x86_mce_decoder_chain, nb);
+ blocking_notifier_chain_register(&x86_mce_decoder_chain, nb);
}
EXPORT_SYMBOL_GPL(mce_register_decode_chain);
@@ -228,7 +228,7 @@ void mce_unregister_decode_chain(struct notifier_block *nb)
{
atomic_dec(&num_notifiers);
- atomic_notifier_chain_unregister(&x86_mce_decoder_chain, nb);
+ blocking_notifier_chain_unregister(&x86_mce_decoder_chain, nb);
}
EXPORT_SYMBOL_GPL(mce_unregister_decode_chain);
@@ -321,18 +321,7 @@ static void __print_mce(struct mce *m)
static void print_mce(struct mce *m)
{
- int ret = 0;
-
__print_mce(m);
-
- /*
- * Print out human-readable details about the MCE error,
- * (if the CPU has an implementation for that)
- */
- ret = atomic_notifier_call_chain(&x86_mce_decoder_chain, 0, m);
- if (ret == NOTIFY_STOP)
- return;
-
pr_emerg_ratelimited(HW_ERR "Run the above through 'mcelog --ascii'\n");
}