diff options
| author | Graf Yang <graf.yang@analog.com> | 2008-11-18 17:48:22 +0800 |
|---|---|---|
| committer | Bryan Wu <cooloney@kernel.org> | 2008-11-18 17:48:22 +0800 |
| commit | 8f65873e47784a390949f0d61e5692dbf2a8253e (patch) | |
| tree | 4d9509bf5e52ebac190d79de04b783829d44f49e /arch/blackfin/kernel/process.c | |
| parent | b8a989893cbdeb6c97a7b5af5f38fb0e480235f9 (diff) | |
| download | linux-8f65873e47784a390949f0d61e5692dbf2a8253e.tar.bz2 | |
Blackfin arch: SMP supporting patchset: Blackfin kernel and memory management code
Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like
In this patch, we provide SMP extend to Blackfin kernel and memory management code
Singed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/kernel/process.c')
| -rw-r--r-- | arch/blackfin/kernel/process.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c index 326e3019cd23..4359ea253010 100644 --- a/arch/blackfin/kernel/process.c +++ b/arch/blackfin/kernel/process.c @@ -171,6 +171,13 @@ asmlinkage int bfin_clone(struct pt_regs *regs) unsigned long clone_flags; unsigned long newsp; +#ifdef __ARCH_SYNC_CORE_DCACHE + if (current->rt.nr_cpus_allowed == num_possible_cpus()) { + current->cpus_allowed = cpumask_of_cpu(smp_processor_id()); + current->rt.nr_cpus_allowed = 1; + } +#endif + /* syscall2 puts clone_flags in r0 and usp in r1 */ clone_flags = regs->r0; newsp = regs->r1; @@ -338,22 +345,22 @@ int _access_ok(unsigned long addr, unsigned long size) if (addr >= (unsigned long)__init_begin && addr + size <= (unsigned long)__init_end) return 1; - if (addr >= L1_SCRATCH_START - && addr + size <= L1_SCRATCH_START + L1_SCRATCH_LENGTH) + if (addr >= get_l1_scratch_start() + && addr + size <= get_l1_scratch_start() + L1_SCRATCH_LENGTH) return 1; #if L1_CODE_LENGTH != 0 - if (addr >= L1_CODE_START + (_etext_l1 - _stext_l1) - && addr + size <= L1_CODE_START + L1_CODE_LENGTH) + if (addr >= get_l1_code_start() + (_etext_l1 - _stext_l1) + && addr + size <= get_l1_code_start() + L1_CODE_LENGTH) return 1; #endif #if L1_DATA_A_LENGTH != 0 - if (addr >= L1_DATA_A_START + (_ebss_l1 - _sdata_l1) - && addr + size <= L1_DATA_A_START + L1_DATA_A_LENGTH) + if (addr >= get_l1_data_a_start() + (_ebss_l1 - _sdata_l1) + && addr + size <= get_l1_data_a_start() + L1_DATA_A_LENGTH) return 1; #endif #if L1_DATA_B_LENGTH != 0 - if (addr >= L1_DATA_B_START + (_ebss_b_l1 - _sdata_b_l1) - && addr + size <= L1_DATA_B_START + L1_DATA_B_LENGTH) + if (addr >= get_l1_data_b_start() + (_ebss_b_l1 - _sdata_b_l1) + && addr + size <= get_l1_data_b_start() + L1_DATA_B_LENGTH) return 1; #endif #if L2_LENGTH != 0 |