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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2022-02-22 14:01:49 +0000 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2022-03-04 18:14:40 +0100 |
| commit | 17c78154b0ba2237c37f3e4a95140b754cb6ac8b (patch) | |
| tree | 1360dd34b521b7673485629f74977323d754e7d7 /include/qemu/rcu.h | |
| parent | 47b74464565713208c218f115918bf760a528afb (diff) | |
| download | qemu-17c78154b0ba2237c37f3e4a95140b754cb6ac8b.zip qemu-17c78154b0ba2237c37f3e4a95140b754cb6ac8b.tar.gz qemu-17c78154b0ba2237c37f3e4a95140b754cb6ac8b.tar.bz2 | |
rcu: use coroutine TLS macros
RCU may be used from coroutines. Standard __thread variables cannot be
used by coroutines. Use the coroutine TLS macros instead.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20220222140150.27240-4-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'include/qemu/rcu.h')
| -rw-r--r-- | include/qemu/rcu.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/qemu/rcu.h b/include/qemu/rcu.h index e69efbd..b063c6f 100644 --- a/include/qemu/rcu.h +++ b/include/qemu/rcu.h @@ -29,6 +29,7 @@ #include "qemu/atomic.h" #include "qemu/notify.h" #include "qemu/sys_membarrier.h" +#include "qemu/coroutine-tls.h" #ifdef __cplusplus extern "C" { @@ -76,11 +77,11 @@ struct rcu_reader_data { NotifierList force_rcu; }; -extern __thread struct rcu_reader_data rcu_reader; +QEMU_DECLARE_CO_TLS(struct rcu_reader_data, rcu_reader) static inline void rcu_read_lock(void) { - struct rcu_reader_data *p_rcu_reader = &rcu_reader; + struct rcu_reader_data *p_rcu_reader = get_ptr_rcu_reader(); unsigned ctr; if (p_rcu_reader->depth++ > 0) { @@ -96,7 +97,7 @@ static inline void rcu_read_lock(void) static inline void rcu_read_unlock(void) { - struct rcu_reader_data *p_rcu_reader = &rcu_reader; + struct rcu_reader_data *p_rcu_reader = get_ptr_rcu_reader(); assert(p_rcu_reader->depth != 0); if (--p_rcu_reader->depth > 0) { |