diff options
Diffstat (limited to 'import-layers/yocto-poky/meta/recipes-core/glibc/glibc/0002-Add-atomic-operations-required-by-the-new-condition-.patch')
| -rw-r--r-- | import-layers/yocto-poky/meta/recipes-core/glibc/glibc/0002-Add-atomic-operations-required-by-the-new-condition-.patch | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/import-layers/yocto-poky/meta/recipes-core/glibc/glibc/0002-Add-atomic-operations-required-by-the-new-condition-.patch b/import-layers/yocto-poky/meta/recipes-core/glibc/glibc/0002-Add-atomic-operations-required-by-the-new-condition-.patch new file mode 100644 index 000000000..c4747fa27 --- /dev/null +++ b/import-layers/yocto-poky/meta/recipes-core/glibc/glibc/0002-Add-atomic-operations-required-by-the-new-condition-.patch @@ -0,0 +1,124 @@ +From b85e30e655027132c4326d2fdde010c517165aaf Mon Sep 17 00:00:00 2001 +From: Catalin Enache <catalin.enache@windriver.com> +Date: Fri, 30 Jun 2017 14:27:34 +0300 +Subject: [PATCH 2/6] Add atomic operations required by the new condition + variable. + + * include/atomic.h (atomic_fetch_and_relaxed, + atomic_fetch_and_release, atomic_fetch_or_release, + atomic_fetch_xor_release): New. + +Upstream-Status: Backport + +Author: Torvald Riegel <triegel@redhat.com> +Signed-off-by: Catalin Enache <catalin.enache@windriver.com> +--- + ChangeLog | 6 ++++++ + include/atomic.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ + 2 files changed, 53 insertions(+) + +diff --git a/ChangeLog b/ChangeLog +index cb87279..96b6da2 100644 +--- a/ChangeLog ++++ b/ChangeLog +@@ -1,3 +1,9 @@ ++2016-08-09 Torvald Riegel <triegel@redhat.com> ++ ++ * include/atomic.h (atomic_fetch_and_relaxed, ++ atomic_fetch_and_release, atomic_fetch_or_release, ++ atomic_fetch_xor_release): New. ++ + 2016-08-05 Torvald Riegel <triegel@redhat.com> + + * include/atomic.h (atomic_exchange_relaxed): New. +diff --git a/include/atomic.h b/include/atomic.h +index 129ee24..5a8e7e7 100644 +--- a/include/atomic.h ++++ b/include/atomic.h +@@ -611,9 +611,15 @@ void __atomic_link_error (void); + ({ __atomic_check_size((mem)); \ + __atomic_fetch_add ((mem), (operand), __ATOMIC_ACQ_REL); }) + ++# define atomic_fetch_and_relaxed(mem, operand) \ ++ ({ __atomic_check_size((mem)); \ ++ __atomic_fetch_and ((mem), (operand), __ATOMIC_RELAXED); }) + # define atomic_fetch_and_acquire(mem, operand) \ + ({ __atomic_check_size((mem)); \ + __atomic_fetch_and ((mem), (operand), __ATOMIC_ACQUIRE); }) ++# define atomic_fetch_and_release(mem, operand) \ ++ ({ __atomic_check_size((mem)); \ ++ __atomic_fetch_and ((mem), (operand), __ATOMIC_RELEASE); }) + + # define atomic_fetch_or_relaxed(mem, operand) \ + ({ __atomic_check_size((mem)); \ +@@ -621,6 +627,13 @@ void __atomic_link_error (void); + # define atomic_fetch_or_acquire(mem, operand) \ + ({ __atomic_check_size((mem)); \ + __atomic_fetch_or ((mem), (operand), __ATOMIC_ACQUIRE); }) ++# define atomic_fetch_or_release(mem, operand) \ ++ ({ __atomic_check_size((mem)); \ ++ __atomic_fetch_or ((mem), (operand), __ATOMIC_RELEASE); }) ++ ++# define atomic_fetch_xor_release(mem, operand) \ ++ ({ __atomic_check_size((mem)); \ ++ __atomic_fetch_xor ((mem), (operand), __ATOMIC_RELEASE); }) + + #else /* !USE_ATOMIC_COMPILER_BUILTINS */ + +@@ -724,12 +737,24 @@ void __atomic_link_error (void); + atomic_exchange_and_add_acq ((mem), (operand)); }) + # endif + ++/* XXX Fall back to acquire MO because archs do not define a weaker ++ atomic_and_val. */ ++# ifndef atomic_fetch_and_relaxed ++# define atomic_fetch_and_relaxed(mem, operand) \ ++ atomic_fetch_and_acquire ((mem), (operand)) ++# endif + /* XXX The default for atomic_and_val has acquire semantics, but this is not + documented. */ + # ifndef atomic_fetch_and_acquire + # define atomic_fetch_and_acquire(mem, operand) \ + atomic_and_val ((mem), (operand)) + # endif ++# ifndef atomic_fetch_and_release ++/* XXX This unnecessarily has acquire MO. */ ++# define atomic_fetch_and_release(mem, operand) \ ++ ({ atomic_thread_fence_release (); \ ++ atomic_and_val ((mem), (operand)); }) ++# endif + + /* XXX The default for atomic_or_val has acquire semantics, but this is not + documented. */ +@@ -743,6 +768,28 @@ void __atomic_link_error (void); + # define atomic_fetch_or_relaxed(mem, operand) \ + atomic_fetch_or_acquire ((mem), (operand)) + # endif ++/* XXX Contains an unnecessary acquire MO because archs do not define a weaker ++ atomic_or_val. */ ++# ifndef atomic_fetch_or_release ++# define atomic_fetch_or_release(mem, operand) \ ++ ({ atomic_thread_fence_release (); \ ++ atomic_fetch_or_acquire ((mem), (operand)); }) ++# endif ++ ++# ifndef atomic_fetch_xor_release ++# define atomic_fetch_xor_release(mem, operand) \ ++ ({ __typeof (*(mem)) __atg104_old; \ ++ __typeof (mem) __atg104_memp = (mem); \ ++ __typeof (*(mem)) __atg104_op = (operand); \ ++ \ ++ do \ ++ __atg104_old = (*__atg104_memp); \ ++ while (__builtin_expect \ ++ (atomic_compare_and_exchange_bool_rel ( \ ++ __atg104_memp, __atg104_old ^ __atg104_op, __atg104_old), 0));\ ++ \ ++ __atg104_old; }) ++#endif + + #endif /* !USE_ATOMIC_COMPILER_BUILTINS */ + +-- +2.10.2 + |
