(and yes, it is perfectly legitimate to want a non-volatile read for a data type that you also want to do atomic RMW operations on)
...which is undefined behaviour in C (and GCC) when that data is declared volatile, which is a good argument against implementing atomics that way in itself. Segher - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
- References:
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- From: Satyam Sharma <[email protected]>
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- From: Paul Mackerras <[email protected]>
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- From: Herbert Xu <[email protected]>
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- From: Paul Mackerras <[email protected]>
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- From: Herbert Xu <[email protected]>
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- From: Stefan Richter <[email protected]>
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- From: Herbert Xu <[email protected]>
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- From: Stefan Richter <[email protected]>
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- From: Stefan Richter <[email protected]>
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- From: Herbert Xu <[email protected]>
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- From: "Paul E. McKenney" <[email protected]>
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- From: Nick Piggin <[email protected]>
- Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- Prev by Date: Re: [PATCH 01/12] Blackfin arch: add peripheral resource allocation support
- Next by Date: Re: + cifs-check-for-granted-memory.patch added to -mm tree
- Previous by thread: Re: LDD3 pitfalls (was Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures)
- Next by thread: Re: [PATCH 0/24] make atomic_read() behave consistently across all architectures
- Index(es):