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| author | Konstantin Belousov <kib@FreeBSD.org> | 2014-10-31 17:43:21 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2014-10-31 17:43:21 +0000 |
| commit | 2361c6d135f4c5ebef91f0502ed51c45fddef7c1 (patch) | |
| tree | ca4f17ebca2b54f7d57e40ce18223d7fda145c25 /share | |
| parent | 3a4c61c2fddb460ae25a243fb3d029562b5e5538 (diff) | |
| download | src-2361c6d135f4c5ebef91f0502ed51c45fddef7c1.tar.gz src-2361c6d135f4c5ebef91f0502ed51c45fddef7c1.zip | |
Add type qualifier volatile to the base (userspace) address argument
of fuword(9) and suword(9). This makes the functions type-compatible
with volatile objects and does not require devolatile force, e.g. in
kern_umtx.c.
Requested by: bde
Reviewed by: jhb
Sponsored by: The FreeBSD Foundation
MFC after: 3 weeks
Notes
Notes:
svn path=/head/; revision=273911
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man9/fetch.9 | 18 | ||||
| -rw-r--r-- | share/man/man9/store.9 | 14 |
2 files changed, 17 insertions, 15 deletions
diff --git a/share/man/man9/fetch.9 b/share/man/man9/fetch.9 index 7e13cbc51c45..1d46784ed310 100644 --- a/share/man/man9/fetch.9 +++ b/share/man/man9/fetch.9 @@ -34,7 +34,7 @@ .\" .\" $FreeBSD$ .\" -.Dd October 21, 2014 +.Dd October 29, 2014 .Dt FETCH 9 .Os .Sh NAME @@ -53,21 +53,21 @@ .In sys/types.h .In sys/systm.h .Ft int -.Fn fubyte "const void *base" +.Fn fubyte "volatile const void *base" .Ft long -.Fn fuword "const void *base" +.Fn fuword "volatile const void *base" .Ft int -.Fn fuword16 "void *base" +.Fn fuword16 "volatile const void *base" .Ft int32_t -.Fn fuword32 "const void *base" +.Fn fuword32 "volatile const void *base" .Ft int64_t -.Fn fuword64 "const void *base" +.Fn fuword64 "volatile const void *base" .Ft long -.Fn fueword "const void *base" "long *val" +.Fn fueword "volatile const void *base" "long *val" .Ft int32_t -.Fn fueword32 "const void *base" "int32_t *val" +.Fn fueword32 "volatile const void *base" "int32_t *val" .Ft int64_t -.Fn fueword64 "const void *base" "int64_t *val" +.Fn fueword64 "volatile const void *base" "int64_t *val" .In sys/resourcevar.h .Ft int .Fn fuswintr "void *base" diff --git a/share/man/man9/store.9 b/share/man/man9/store.9 index d333eff03315..cc442f25f47c 100644 --- a/share/man/man9/store.9 +++ b/share/man/man9/store.9 @@ -34,7 +34,7 @@ .\" .\" $FreeBSD$ .\" -.Dd October 5, 2009 +.Dd October 29, 2014 .Dt STORE 9 .Os .Sh NAME @@ -48,15 +48,15 @@ .In sys/time.h .In sys/systm.h .Ft int -.Fn subyte "void *base" "int byte" +.Fn subyte "volatile void *base" "int byte" .Ft int -.Fn suword "void *base" "long word" +.Fn suword "volatile void *base" "long word" .Ft int -.Fn suword16 "void *base" "int word" +.Fn suword16 "volatile void *base" "int word" .Ft int -.Fn suword32 "void *base" "int32_t word" +.Fn suword32 "volatile void *base" "int32_t word" .Ft int -.Fn suword64 "void *base" "int64_t word" +.Fn suword64 "volatile void *base" "int64_t word" .In sys/resourcevar.h .Ft int .Fn suswintr "void *base" "int word" @@ -64,6 +64,8 @@ The .Nm functions are designed to copy small amounts of data to user-space. +If write is successful, it is performed atomically. +The data written must be naturally aligned. .Pp The .Nm |