Eric Lee / linux-smarc-t335x-v3.2

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Commit 00b3c28bd753afb46fb26b2f9e21dd27dacd80d4

Authored by Mike Frysinger
Committed by Linus Torvalds
1 parent f6081bd3f8
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

asm-generic/atomic.h: add atomic_set_mask() helper 

Since arches are expected to implement this guy, add a common version for
people the same way as atomic_clear_mask is handled.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Arun Sharma <asharma@fb.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Showing 1 changed file with 16 additions and 0 deletions Side-by-side Diff

include/asm-generic/atomic.h
Diff comments   View file @ 00b3c28
... ... @@ -157,6 +157,22 @@
157 157 raw_local_irq_restore(flags);
158 158 }
159 159  
  160 +/**
  161 + * atomic_set_mask - Atomically set bits in atomic variable
  162 + * @mask: Mask of the bits to be set
  163 + * @v: pointer of type atomic_t
  164 + *
  165 + * Atomically sets the bits set in @mask in @v
  166 + */
  167 +static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
  168 +{
  169 + unsigned long flags;
  170 +
  171 + raw_local_irq_save(flags); /* Don't trace it in a irqsoff handler */
  172 + v->counter |= mask;
  173 + raw_local_irq_restore(flags);
  174 +}
  175 +
160 176 /* Assume that atomic operations are already serializing */
161 177 #define smp_mb__before_atomic_dec() barrier()
162 178 #define smp_mb__after_atomic_dec() barrier()