diff options
| author | David Daney <ddaney@caviumnetworks.com> | 2010-01-22 14:41:14 -0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2010-02-27 12:53:12 +0100 |
| commit | 2a880986d899f556f5a327bc77cc8760d5bb9c64 (patch) | |
| tree | 179032b7895ca3594c3fec96a194178ffecf4ad6 /arch/mips/mm/tlb-r4k.c | |
| parent | f868ba29723be46e0981226d7455090d515b08ef (diff) | |
MIPS: Remove probe_tlb().
The function probe_tlb() only does anything for processors that are
not PRID_COMP_LEGACY. This is precisely the set of processors for
which decode_configs() is called to do identical tlbsize probing
calculations. Therefore probe_tlb() is completely redundant and may
be removed.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/865/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mm/tlb-r4k.c')
| -rw-r--r-- | arch/mips/mm/tlb-r4k.c | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c index d73428b18b0a..45b7c35950c4 100644 --- a/arch/mips/mm/tlb-r4k.c +++ b/arch/mips/mm/tlb-r4k.c @@ -447,34 +447,6 @@ out: return ret; } -static void __cpuinit probe_tlb(unsigned long config) -{ - struct cpuinfo_mips *c = ¤t_cpu_data; - unsigned int reg; - - /* - * If this isn't a MIPS32 / MIPS64 compliant CPU. Config 1 register - * is not supported, we assume R4k style. Cpu probing already figured - * out the number of tlb entries. - */ - if ((c->processor_id & 0xff0000) == PRID_COMP_LEGACY) - return; -#ifdef CONFIG_MIPS_MT_SMTC - /* - * If TLB is shared in SMTC system, total size already - * has been calculated and written into cpu_data tlbsize - */ - if((smtc_status & SMTC_TLB_SHARED) == SMTC_TLB_SHARED) - return; -#endif /* CONFIG_MIPS_MT_SMTC */ - - reg = read_c0_config1(); - if (!((config >> 7) & 3)) - panic("No TLB present"); - - c->tlbsize = ((reg >> 25) & 0x3f) + 1; -} - static int __cpuinitdata ntlb; static int __init set_ntlb(char *str) { @@ -486,8 +458,6 @@ __setup("ntlb=", set_ntlb); void __cpuinit tlb_init(void) { - unsigned int config = read_c0_config(); - /* * You should never change this register: * - On R4600 1.7 the tlbp never hits for pages smaller than @@ -495,7 +465,6 @@ void __cpuinit tlb_init(void) * - The entire mm handling assumes the c0_pagemask register to * be set to fixed-size pages. */ - probe_tlb(config); write_c0_pagemask(PM_DEFAULT_MASK); write_c0_wired(0); if (current_cpu_type() == CPU_R10000 || |