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404849bbd2
This patch removes several unnecessary fields from the paca: - next_jiffy_update_tb was simply unused. Remove trivially. - The exdsi exception save area was not used. There were plans to use it, but they never seem to have gone anywhere. If they ever do, we can put it back. Remove from the paca, and from asm-offsets.c - The default_decr field was used from asm, but was only ever assigned the value of tb_ticks_per_jiffy. Just access tb_ticks_per_jiffy from asm directly instead. Built and booted on POWER5 LPAR and iSeries RS64. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
131 lines
4.8 KiB
C
131 lines
4.8 KiB
C
/*
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* c 2001 PPC 64 Team, IBM Corp
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/config.h>
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#include <linux/types.h>
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#include <linux/threads.h>
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#include <linux/module.h>
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#include <asm/processor.h>
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#include <asm/ptrace.h>
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#include <asm/page.h>
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#include <asm/lppaca.h>
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#include <asm/iseries/it_lp_queue.h>
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#include <asm/iseries/it_lp_reg_save.h>
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#include <asm/paca.h>
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/* This symbol is provided by the linker - let it fill in the paca
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* field correctly */
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extern unsigned long __toc_start;
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/* The Paca is an array with one entry per processor. Each contains an
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* lppaca, which contains the information shared between the
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* hypervisor and Linux.
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* On systems with hardware multi-threading, there are two threads
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* per processor. The Paca array must contain an entry for each thread.
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* The VPD Areas will give a max logical processors = 2 * max physical
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* processors. The processor VPD array needs one entry per physical
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* processor (not thread).
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*/
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#define PACA_INIT_COMMON(number, start, asrr, asrv) \
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.lock_token = 0x8000, \
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.paca_index = (number), /* Paca Index */ \
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.kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL, \
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.stab_real = (asrr), /* Real pointer to segment table */ \
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.stab_addr = (asrv), /* Virt pointer to segment table */ \
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.cpu_start = (start), /* Processor start */ \
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.hw_cpu_id = 0xffff, \
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.lppaca = { \
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.desc = 0xd397d781, /* "LpPa" */ \
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.size = sizeof(struct lppaca), \
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.dyn_proc_status = 2, \
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.decr_val = 0x00ff0000, \
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.fpregs_in_use = 1, \
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.end_of_quantum = 0xfffffffffffffffful, \
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.slb_count = 64, \
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.vmxregs_in_use = 0, \
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}, \
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#ifdef CONFIG_PPC_ISERIES
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#define PACA_INIT_ISERIES(number) \
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.lppaca_ptr = &paca[number].lppaca, \
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.reg_save_ptr = &iseries_reg_save[number],
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#define PACA_INIT(number) \
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{ \
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PACA_INIT_COMMON(number, 0, 0, 0) \
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PACA_INIT_ISERIES(number) \
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}
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#define BOOTCPU_PACA_INIT(number) \
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{ \
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PACA_INIT_COMMON(number, 1, 0, (u64)&initial_stab) \
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PACA_INIT_ISERIES(number) \
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}
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#else
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#define PACA_INIT(number) \
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{ \
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PACA_INIT_COMMON(number, 0, 0, 0) \
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}
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#define BOOTCPU_PACA_INIT(number) \
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{ \
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PACA_INIT_COMMON(number, 1, STAB0_PHYS_ADDR, (u64)&initial_stab) \
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}
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#endif
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struct paca_struct paca[] = {
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BOOTCPU_PACA_INIT(0),
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#if NR_CPUS > 1
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PACA_INIT( 1), PACA_INIT( 2), PACA_INIT( 3),
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#if NR_CPUS > 4
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PACA_INIT( 4), PACA_INIT( 5), PACA_INIT( 6), PACA_INIT( 7),
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#if NR_CPUS > 8
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PACA_INIT( 8), PACA_INIT( 9), PACA_INIT( 10), PACA_INIT( 11),
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PACA_INIT( 12), PACA_INIT( 13), PACA_INIT( 14), PACA_INIT( 15),
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PACA_INIT( 16), PACA_INIT( 17), PACA_INIT( 18), PACA_INIT( 19),
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PACA_INIT( 20), PACA_INIT( 21), PACA_INIT( 22), PACA_INIT( 23),
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PACA_INIT( 24), PACA_INIT( 25), PACA_INIT( 26), PACA_INIT( 27),
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PACA_INIT( 28), PACA_INIT( 29), PACA_INIT( 30), PACA_INIT( 31),
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#if NR_CPUS > 32
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PACA_INIT( 32), PACA_INIT( 33), PACA_INIT( 34), PACA_INIT( 35),
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PACA_INIT( 36), PACA_INIT( 37), PACA_INIT( 38), PACA_INIT( 39),
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PACA_INIT( 40), PACA_INIT( 41), PACA_INIT( 42), PACA_INIT( 43),
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PACA_INIT( 44), PACA_INIT( 45), PACA_INIT( 46), PACA_INIT( 47),
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PACA_INIT( 48), PACA_INIT( 49), PACA_INIT( 50), PACA_INIT( 51),
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PACA_INIT( 52), PACA_INIT( 53), PACA_INIT( 54), PACA_INIT( 55),
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PACA_INIT( 56), PACA_INIT( 57), PACA_INIT( 58), PACA_INIT( 59),
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PACA_INIT( 60), PACA_INIT( 61), PACA_INIT( 62), PACA_INIT( 63),
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#if NR_CPUS > 64
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PACA_INIT( 64), PACA_INIT( 65), PACA_INIT( 66), PACA_INIT( 67),
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PACA_INIT( 68), PACA_INIT( 69), PACA_INIT( 70), PACA_INIT( 71),
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PACA_INIT( 72), PACA_INIT( 73), PACA_INIT( 74), PACA_INIT( 75),
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PACA_INIT( 76), PACA_INIT( 77), PACA_INIT( 78), PACA_INIT( 79),
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PACA_INIT( 80), PACA_INIT( 81), PACA_INIT( 82), PACA_INIT( 83),
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PACA_INIT( 84), PACA_INIT( 85), PACA_INIT( 86), PACA_INIT( 87),
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PACA_INIT( 88), PACA_INIT( 89), PACA_INIT( 90), PACA_INIT( 91),
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PACA_INIT( 92), PACA_INIT( 93), PACA_INIT( 94), PACA_INIT( 95),
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PACA_INIT( 96), PACA_INIT( 97), PACA_INIT( 98), PACA_INIT( 99),
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PACA_INIT(100), PACA_INIT(101), PACA_INIT(102), PACA_INIT(103),
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PACA_INIT(104), PACA_INIT(105), PACA_INIT(106), PACA_INIT(107),
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PACA_INIT(108), PACA_INIT(109), PACA_INIT(110), PACA_INIT(111),
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PACA_INIT(112), PACA_INIT(113), PACA_INIT(114), PACA_INIT(115),
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PACA_INIT(116), PACA_INIT(117), PACA_INIT(118), PACA_INIT(119),
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PACA_INIT(120), PACA_INIT(121), PACA_INIT(122), PACA_INIT(123),
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PACA_INIT(124), PACA_INIT(125), PACA_INIT(126), PACA_INIT(127),
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#endif
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#endif
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#endif
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#endif
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#endif
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};
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EXPORT_SYMBOL(paca);
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