diff options
| author | sephe <sephe@FreeBSD.org> | 2016-05-03 07:17:13 +0000 |
|---|---|---|
| committer | sephe <sephe@FreeBSD.org> | 2016-05-03 07:17:13 +0000 |
| commit | 50eba76e306f52b315e2e304800e2ac27563d1e5 (patch) | |
| tree | 45a74f9502b2a5aab2e82bc6a51bb083759e6779 /share/man | |
| parent | eed4bd22add2269ccde27996035581801316c610 (diff) | |
| download | FreeBSD-src-50eba76e306f52b315e2e304800e2ac27563d1e5.zip FreeBSD-src-50eba76e306f52b315e2e304800e2ac27563d1e5.tar.gz | |
kern: Add phashinit_flags(), which allows malloc(M_NOWAIT)
It will be used for the upcoming LRO hash table initialization.
And probably will be useful in other cases, when M_WAITOK can't
be used.
Reviewed by: jhb, kib
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6138
Diffstat (limited to 'share/man')
| -rw-r--r-- | share/man/man9/hashinit.9 | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/share/man/man9/hashinit.9 b/share/man/man9/hashinit.9 index 65ef10e..5357a95e 100644 --- a/share/man/man9/hashinit.9 +++ b/share/man/man9/hashinit.9 @@ -25,11 +25,11 @@ .\" .\" $FreeBSD$ .\" -.Dd January 23, 2016 +.Dd April 29, 2016 .Dt HASHINIT 9 .Os .Sh NAME -.Nm hashinit , hashinit_flags , hashdestroy , phashinit +.Nm hashinit , hashinit_flags , hashdestroy , phashinit , phashinit_flags .Nd manage kernel hash tables .Sh SYNOPSIS .In sys/malloc.h @@ -45,12 +45,14 @@ .Fn hashdestroy "void *hashtbl" "struct malloc_type *type" "u_long hashmask" .Ft "void *" .Fn phashinit "int nelements" "struct malloc_type *type" "u_long *nentries" +.Fn phashinit_flags "int nelements" "struct malloc_type *type" "u_long *nentries" "int flags" .Sh DESCRIPTION The .Fn hashinit , -.Fn hashinit_flags -and +.Fn hashinit_flags , .Fn phashinit +and +.Fn phashinit_flags functions allocate space for hash tables of size given by the argument .Fa nelements . .Pp @@ -71,6 +73,12 @@ function operates like but also accepts an additional argument .Fa flags which control various options during allocation. +.Fn phashinit_flags +function operates like +.Fn phashinit +but also accepts an additional argument +.Fa flags +which control various options during allocation. Allocated hash tables are contiguous arrays of .Xr LIST_HEAD 3 entries, allocated using @@ -100,13 +108,19 @@ must be used with one of the following values. .It Dv HASH_NOWAIT Any malloc performed by the .Fn hashinit_flags +and +.Fn phashinit_flags function will not be allowed to wait, and therefore may fail. .It Dv HASH_WAITOK Any malloc performed by .Fn hashinit_flags +and +.Fn phashinit_flags function is allowed to wait for memory. This is also the behavior of -.Fn hashinit . +.Fn hashinit +and +.Fn phashinit . .El .Sh IMPLEMENTATION NOTES The largest prime hash value chosen by |
