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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2018-02-01 15:13:18 -0500 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-11 14:37:22 -0800 |
| commit | 7a163b2195cda0cddf47b5caf14a7229d4e2bea3 (patch) | |
| tree | 5867e113f0232679d5125ca7d42ae4558dd0d554 /arch/sparc | |
| parent | vfs: do bulk POLL* -> EPOLL* replacement (diff) | |
| download | linux-dev-7a163b2195cda0cddf47b5caf14a7229d4e2bea3.tar.xz linux-dev-7a163b2195cda0cddf47b5caf14a7229d4e2bea3.zip | |
unify {de,}mangle_poll(), get rid of kernel-side POLL...
except, again, POLLFREE and POLL_BUSY_LOOP.
With this, we finally get to the promised end result:
- POLL{IN,OUT,...} are plain integers and *not* in __poll_t, so any
stray instances of ->poll() still using those will be caught by
sparse.
- eventpoll.c and select.c warning-free wrt __poll_t
- no more kernel-side definitions of POLL... - userland ones are
visible through the entire kernel (and used pretty much only for
mangle/demangle)
- same behavior as after the first series (i.e. sparc et.al. epoll(2)
working correctly).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/include/uapi/asm/poll.h | 28 |
1 files changed, 4 insertions, 24 deletions
diff --git a/arch/sparc/include/uapi/asm/poll.h b/arch/sparc/include/uapi/asm/poll.h index 2a81e79aa3ea..72356c999125 100644 --- a/arch/sparc/include/uapi/asm/poll.h +++ b/arch/sparc/include/uapi/asm/poll.h @@ -2,31 +2,11 @@ #ifndef __SPARC_POLL_H #define __SPARC_POLL_H -#ifndef __KERNEL__ #define POLLWRNORM POLLOUT -#define POLLWRBAND (__force __poll_t)256 -#define POLLMSG (__force __poll_t)512 -#define POLLREMOVE (__force __poll_t)1024 -#define POLLRDHUP (__force __poll_t)2048 -#else -#define __ARCH_HAS_MANGLED_POLL -static inline __u16 mangle_poll(__poll_t val) -{ - __u16 v = (__force __u16)val; - /* bit 9 -> bit 8, bit 8 -> bit 2, bit 13 -> bit 11 */ - return (v & ~0x300) | ((v & 0x200) >> 1) | ((v & 0x100) >> 6) | - ((v & 0x2000) >> 2); - - -} - -static inline __poll_t demangle_poll(__u16 v) -{ - /* bit 8 -> bit 9, bit 2 -> bits 2 and 8 */ - return (__force __poll_t)((v & ~0x100) | ((v & 0x100) << 1) | - ((v & 4) << 6) | ((v & 0x800) << 2)); -} -#endif +#define POLLWRBAND 256 +#define POLLMSG 512 +#define POLLREMOVE 1024 +#define POLLRDHUP 2048 #include <asm-generic/poll.h> |