diff options
author | Graf Yang <graf.yang@analog.com> | 2010-02-01 06:07:50 +0000 |
---|---|---|
committer | Mike Frysinger <vapier@gentoo.org> | 2010-03-09 00:30:50 -0500 |
commit | 718340f62900ed44046d2b0f74d0dec7cf844194 (patch) | |
tree | 974cf52038196598c653902de3da83ca96ee3792 /arch/blackfin/mach-common | |
parent | 6c2b7072a7035837998da38809f98e4182e4c41c (diff) | |
download | kernel_samsung_aries-718340f62900ed44046d2b0f74d0dec7cf844194.zip kernel_samsung_aries-718340f62900ed44046d2b0f74d0dec7cf844194.tar.gz kernel_samsung_aries-718340f62900ed44046d2b0f74d0dec7cf844194.tar.bz2 |
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/mach-common')
-rw-r--r-- | arch/blackfin/mach-common/smp.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c index efc47ff..7803f22 100644 --- a/arch/blackfin/mach-common/smp.c +++ b/arch/blackfin/mach-common/smp.c @@ -474,24 +474,26 @@ void smp_icache_flush_range_others(unsigned long start, unsigned long end) EXPORT_SYMBOL_GPL(smp_icache_flush_range_others); #ifdef __ARCH_SYNC_CORE_ICACHE +unsigned long icache_invld_count[NR_CPUS]; void resync_core_icache(void) { unsigned int cpu = get_cpu(); blackfin_invalidate_entire_icache(); - ++per_cpu(cpu_data, cpu).icache_invld_count; + icache_invld_count[cpu]++; put_cpu(); } EXPORT_SYMBOL(resync_core_icache); #endif #ifdef __ARCH_SYNC_CORE_DCACHE +unsigned long dcache_invld_count[NR_CPUS]; unsigned long barrier_mask __attribute__ ((__section__(".l2.bss"))); void resync_core_dcache(void) { unsigned int cpu = get_cpu(); blackfin_invalidate_entire_dcache(); - ++per_cpu(cpu_data, cpu).dcache_invld_count; + dcache_invld_count[cpu]++; put_cpu(); } EXPORT_SYMBOL(resync_core_dcache); |