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authorSteffen Klassert <steffen.klassert@secunet.com>2010-07-07 17:30:10 +0400
committerHerbert Xu <herbert@gondor.apana.org.au>2010-07-14 16:29:28 +0400
commit4c879170296174bde05cd1c643dac16594edee77 (patch)
tree467afaa9ad1235caa110789621edb7726fdcb4cd /include/linux/padata.h
parent7e3de7b1be6ce0643f60aed697070e2286db32cd (diff)
downloadlinux-4c879170296174bde05cd1c643dac16594edee77.tar.xz
padata: Check for valid padata instance on start
This patch introduces the PADATA_INVALID flag which is checked on padata start. This will be used to mark a padata instance as invalid, if the padata cpumask does not intersect with the active cpumask. we change padata_start to return an error if the PADATA_INVALID is set. Also we adapt the only padata user, pcrypt to this change. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/linux/padata.h')
-rw-r--r--include/linux/padata.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/padata.h b/include/linux/padata.h
index 8d8406246eef..e4c17f9b7c9e 100644
--- a/include/linux/padata.h
+++ b/include/linux/padata.h
@@ -126,6 +126,7 @@ struct padata_instance {
u8 flags;
#define PADATA_INIT 1
#define PADATA_RESET 2
+#define PADATA_INVALID 4
};
extern struct padata_instance *padata_alloc(const struct cpumask *cpumask,
@@ -138,6 +139,6 @@ extern int padata_set_cpumask(struct padata_instance *pinst,
cpumask_var_t cpumask);
extern int padata_add_cpu(struct padata_instance *pinst, int cpu);
extern int padata_remove_cpu(struct padata_instance *pinst, int cpu);
-extern void padata_start(struct padata_instance *pinst);
+extern int padata_start(struct padata_instance *pinst);
extern void padata_stop(struct padata_instance *pinst);
#endif