diff options
Diffstat (limited to 'meta-oe/recipes-dbs/rocksdb/files/arm.patch')
| -rw-r--r-- | meta-oe/recipes-dbs/rocksdb/files/arm.patch | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/meta-oe/recipes-dbs/rocksdb/files/arm.patch b/meta-oe/recipes-dbs/rocksdb/files/arm.patch new file mode 100644 index 0000000000..d428a6624a --- /dev/null +++ b/meta-oe/recipes-dbs/rocksdb/files/arm.patch @@ -0,0 +1,26 @@ +implement timer for arm >= v6 + +Signed-off-by: Khem Raj <raj.khem@gmail.com> +--- a/utilities/transactions/lock/range/range_tree/lib/portability/toku_time.h ++++ b/utilities/transactions/lock/range/range_tree/lib/portability/toku_time.h +@@ -161,6 +161,20 @@ static inline tokutime_t toku_time_now(v + struct timeval tv; + gettimeofday(&tv, nullptr); + return (uint64_t)tv.tv_sec * 1000000 + tv.tv_usec; ++#elif (__ARM_ARCH >= 6) ++ uint32_t pmccntr; ++ uint32_t pmuseren; ++ uint32_t pmcntenset; ++ // Read the user mode perf monitor counter access permissions. ++ asm volatile("mrc p15, 0, %0, c9, c14, 0" : "=r"(pmuseren)); ++ if (pmuseren & 1) { // Allows reading perfmon counters for user mode code. ++ asm volatile("mrc p15, 0, %0, c9, c12, 1" : "=r"(pmcntenset)); ++ if (pmcntenset & 0x80000000ul) { // Is it counting? ++ asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r"(pmccntr)); ++ // The counter is set up to count every 64th cycle ++ return (uint64_t)pmccntr * 64; // Should optimize to << 6 ++ } ++ } + #else + #error No timer implementation for this platform + #endif |