diff options
| author | Graf Yang <graf.yang@analog.com> | 2010-02-01 09:07:50 +0300 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2010-03-09 08:30:50 +0300 |
| commit | 718340f62900ed44046d2b0f74d0dec7cf844194 (patch) | |
| tree | 974cf52038196598c653902de3da83ca96ee3792 /arch/blackfin/include | |
| parent | 6c2b7072a7035837998da38809f98e4182e4c41c (diff) | |
| download | linux-718340f62900ed44046d2b0f74d0dec7cf844194.tar.xz | |
Blackfin: rewrite resync_core_{i,d}cache() SMP logic to avoid per_cpu data
This functions are implicitly called by core functions like cpu_relax(),
and since those functions may be called early on before common code has
initialized the per-cpu data area, we need to tweak the stats gathering.
Now the statistics are maintained in common bss which makes these funcs
safe to use as soon as the C runtime env is setup.
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/include')
| -rw-r--r-- | arch/blackfin/include/asm/cpu.h | 2 | ||||
| -rw-r--r-- | arch/blackfin/include/asm/smp.h | 7 |
2 files changed, 7 insertions, 2 deletions
diff --git a/arch/blackfin/include/asm/cpu.h b/arch/blackfin/include/asm/cpu.h index b191dc662bd8..16883e582e3c 100644 --- a/arch/blackfin/include/asm/cpu.h +++ b/arch/blackfin/include/asm/cpu.h @@ -17,8 +17,6 @@ struct blackfin_cpudata { struct task_struct *idle; unsigned int imemctl; unsigned int dmemctl; - unsigned long dcache_invld_count; - unsigned long icache_invld_count; }; DECLARE_PER_CPU(struct blackfin_cpudata, cpu_data); diff --git a/arch/blackfin/include/asm/smp.h b/arch/blackfin/include/asm/smp.h index 7f26de09ca9c..f5b537967116 100644 --- a/arch/blackfin/include/asm/smp.h +++ b/arch/blackfin/include/asm/smp.h @@ -24,6 +24,13 @@ struct corelock_slot { }; extern struct corelock_slot corelock; +#ifdef __ARCH_SYNC_CORE_ICACHE +extern unsigned long icache_invld_count[NR_CPUS]; +#endif +#ifdef __ARCH_SYNC_CORE_DCACHE +extern unsigned long dcache_invld_count[NR_CPUS]; +#endif + void smp_icache_flush_range_others(unsigned long start, unsigned long end); #ifdef CONFIG_HOTPLUG_CPU |