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Diffstat (limited to '')
| -rw-r--r-- | debian/patches-rt/0062-locallock-provide-get-put-_locked_ptr-variants.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/debian/patches-rt/0062-locallock-provide-get-put-_locked_ptr-variants.patch b/debian/patches-rt/0062-locallock-provide-get-put-_locked_ptr-variants.patch new file mode 100644 index 000000000..d3d7ffdeb --- /dev/null +++ b/debian/patches-rt/0062-locallock-provide-get-put-_locked_ptr-variants.patch @@ -0,0 +1,49 @@ +From 5b024e1bb773440c6f4c48fdb21090bfadab8a7a Mon Sep 17 00:00:00 2001 +From: Julia Cartwright <julia@ni.com> +Date: Mon, 7 May 2018 08:58:56 -0500 +Subject: [PATCH 062/347] locallock: provide {get,put}_locked_ptr() variants +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz + +Provide a set of locallocked accessors for pointers to per-CPU data; +this is useful for dynamically-allocated per-CPU regions, for example. + +These are symmetric with the {get,put}_cpu_ptr() per-CPU accessor +variants. + +Signed-off-by: Julia Cartwright <julia@ni.com> +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + include/linux/locallock.h | 10 ++++++++++ + 1 file changed, 10 insertions(+) + +diff --git a/include/linux/locallock.h b/include/linux/locallock.h +index d658c2552601..921eab83cd34 100644 +--- a/include/linux/locallock.h ++++ b/include/linux/locallock.h +@@ -222,6 +222,14 @@ static inline int __local_unlock_irqrestore(struct local_irq_lock *lv, + + #define put_locked_var(lvar, var) local_unlock(lvar); + ++#define get_locked_ptr(lvar, var) \ ++ ({ \ ++ local_lock(lvar); \ ++ this_cpu_ptr(var); \ ++ }) ++ ++#define put_locked_ptr(lvar, var) local_unlock(lvar); ++ + #define local_lock_cpu(lvar) \ + ({ \ + local_lock(lvar); \ +@@ -262,6 +270,8 @@ static inline void local_irq_lock_init(int lvar) { } + + #define get_locked_var(lvar, var) get_cpu_var(var) + #define put_locked_var(lvar, var) put_cpu_var(var) ++#define get_locked_ptr(lvar, var) get_cpu_ptr(var) ++#define put_locked_ptr(lvar, var) put_cpu_ptr(var) + + #define local_lock_cpu(lvar) get_cpu() + #define local_unlock_cpu(lvar) put_cpu() +-- +2.36.1 + |