diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 2 | ||||
| -rw-r--r-- | lib/cpu_rmap.c | 6 | ||||
| -rw-r--r-- | lib/crc-t10dif.c | 11 |
3 files changed, 11 insertions, 8 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index c9eef36739a9..06344d986eb9 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -597,7 +597,7 @@ endmenu # "Memory Debugging" config DEBUG_SHIRQ bool "Debug shared IRQ handlers" - depends on DEBUG_KERNEL && GENERIC_HARDIRQS + depends on DEBUG_KERNEL help Enable this to generate a spurious interrupt as soon as a shared interrupt handler is registered, and just before one is deregistered. diff --git a/lib/cpu_rmap.c b/lib/cpu_rmap.c index 5fbed5caba6e..4f134d8907a7 100644 --- a/lib/cpu_rmap.c +++ b/lib/cpu_rmap.c @@ -8,9 +8,7 @@ */ #include <linux/cpu_rmap.h> -#ifdef CONFIG_GENERIC_HARDIRQS #include <linux/interrupt.h> -#endif #include <linux/export.h> /* @@ -213,8 +211,6 @@ int cpu_rmap_update(struct cpu_rmap *rmap, u16 index, } EXPORT_SYMBOL(cpu_rmap_update); -#ifdef CONFIG_GENERIC_HARDIRQS - /* Glue between IRQ affinity notifiers and CPU rmaps */ struct irq_glue { @@ -309,5 +305,3 @@ int irq_cpu_rmap_add(struct cpu_rmap *rmap, int irq) return rc; } EXPORT_SYMBOL(irq_cpu_rmap_add); - -#endif /* CONFIG_GENERIC_HARDIRQS */ diff --git a/lib/crc-t10dif.c b/lib/crc-t10dif.c index 43bc5b071f96..dfe6ec17c0a5 100644 --- a/lib/crc-t10dif.c +++ b/lib/crc-t10dif.c @@ -14,8 +14,10 @@ #include <linux/err.h> #include <linux/init.h> #include <crypto/hash.h> +#include <linux/static_key.h> static struct crypto_shash *crct10dif_tfm; +static struct static_key crct10dif_fallback __read_mostly; __u16 crc_t10dif(const unsigned char *buffer, size_t len) { @@ -25,6 +27,9 @@ __u16 crc_t10dif(const unsigned char *buffer, size_t len) } desc; int err; + if (static_key_false(&crct10dif_fallback)) + return crc_t10dif_generic(0, buffer, len); + desc.shash.tfm = crct10dif_tfm; desc.shash.flags = 0; *(__u16 *)desc.ctx = 0; @@ -39,7 +44,11 @@ EXPORT_SYMBOL(crc_t10dif); static int __init crc_t10dif_mod_init(void) { crct10dif_tfm = crypto_alloc_shash("crct10dif", 0, 0); - return PTR_RET(crct10dif_tfm); + if (IS_ERR(crct10dif_tfm)) { + static_key_slow_inc(&crct10dif_fallback); + crct10dif_tfm = NULL; + } + return 0; } static void __exit crc_t10dif_mod_fini(void) |