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authorLinus Torvalds <torvalds@linux-foundation.org>2012-07-27 15:14:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-27 15:14:26 -0700
commitcea8f46c36c3f82860b038aa23a46e16757666ba (patch)
treee09dc37d2b6880d86dac09afbc0c686139d86df0 /arch/arm/include/asm/timex.h
parentc1e7179a38919f02dd950801529176b72f5e5a8a (diff)
parent91b006def384d8f07f9f324ab211fefe2b085c90 (diff)
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM updates from Russell King: "First ARM push of this merge window, post me coming back from holiday. This is what has been in linux-next for the last few weeks. Not much to say which isn't described by the commit summaries." * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (32 commits) ARM: 7463/1: topology: Update cpu_power according to DT information ARM: 7462/1: topology: factorize the update of sibling masks ARM: 7461/1: topology: Add arch_scale_freq_power function ARM: 7456/1: ptrace: provide separate functions for tracing syscall {entry,exit} ARM: 7455/1: audit: move syscall auditing until after ptrace SIGTRAP handling ARM: 7454/1: entry: don't bother with syscall tracing on ret_from_fork path ARM: 7453/1: audit: only allow syscall auditing for pure EABI userspace ARM: 7452/1: delay: allow timer-based delay implementation to be selected ARM: 7451/1: arch timer: implement read_current_timer and get_cycles ARM: 7450/1: dcache: select DCACHE_WORD_ACCESS for little-endian ARMv6+ CPUs ARM: 7449/1: use generic strnlen_user and strncpy_from_user functions ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration ARM: 7447/1: rwlocks: remove unused branch labels from trylock routines ARM: 7446/1: spinlock: use ticket algorithm for ARMv6+ locking implementation ARM: 7445/1: mm: update CONTEXTIDR register to contain PID of current process ARM: 7444/1: kernel: add arch-timer C3STOP feature ARM: 7460/1: remove asm/locks.h ARM: 7439/1: head.S: simplify initial page table mapping ARM: 7437/1: zImage: Allow DTB command line concatenation with ATAG_CMDLINE ARM: 7436/1: Do not map the vectors page as write-through on UP systems ...
Diffstat (limited to 'arch/arm/include/asm/timex.h')
-rw-r--r--arch/arm/include/asm/timex.h10
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/arm/include/asm/timex.h b/arch/arm/include/asm/timex.h
index 3be8de3adab..ce119442277 100644
--- a/arch/arm/include/asm/timex.h
+++ b/arch/arm/include/asm/timex.h
@@ -12,13 +12,15 @@
#ifndef _ASMARM_TIMEX_H
#define _ASMARM_TIMEX_H
+#include <asm/arch_timer.h>
#include <mach/timex.h>
typedef unsigned long cycles_t;
-static inline cycles_t get_cycles (void)
-{
- return 0;
-}
+#ifdef ARCH_HAS_READ_CURRENT_TIMER
+#define get_cycles() ({ cycles_t c; read_current_timer(&c) ? 0 : c; })
+#else
+#define get_cycles() (0)
+#endif
#endif