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[PATCH] powerpc: Kill ppcdebug 

The ancient ppcdebug/PPCDBG mechanism is now only used in two places.
First, in the hash setup code, one of the bits allows the size of the
hash table to be reduced by a factor of 8 - which would be better
accomplished with a command line option for that purpose.  The other
was a bunch of bus walking related messages in the iSeries code, which
would seem to be insufficient reason to keep the mechanism.

This patch removes the last traces of this mechanism.

Built and booted on iSeries and pSeries POWER5 LPAR (ARCH=powerpc).

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
David Gibson 2005-11-07 09:49:43 +11:00 committed by Paul Mackerras
parent 723925b7b1
commit dcad47fc42
20 changed files with 3 additions and 242 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
arch/powerpc/kernel/setup_64.c
View File

@ -41,7 +41,6 @@
#include <asm/elf.h>
#include <asm/machdep.h>
#include <asm/paca.h>
#include <asm/ppcdebug.h>
#include <asm/time.h>
#include <asm/cputable.h>
#include <asm/sections.h>
@ -60,6 +59,7 @@
#include <asm/firmware.h>
#include <asm/systemcfg.h>
#include <asm/xmon.h>
#include <asm/udbg.h>
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
@ -243,12 +243,6 @@ void __init early_setup(unsigned long dt_ptr)
DBG(" -> early_setup()\n");
/*
* Fill the default DBG level (do we want to keep
* that old mecanism around forever ?)
*/
ppcdbg_initialize();
/*
* Do early initializations using the flattened device
* tree, like retreiving the physical memory map or
@ -516,7 +510,6 @@ void __init setup_system(void)
printk("-----------------------------------------------------\n");
printk("ppc64_pft_size = 0x%lx\n", ppc64_pft_size);
printk("ppc64_debug_switch = 0x%lx\n", ppc64_debug_switch);
printk("ppc64_interrupt_controller = 0x%ld\n", ppc64_interrupt_controller);
printk("systemcfg = 0x%p\n", systemcfg);
printk("systemcfg->platform = 0x%x\n", systemcfg->platform);

1
arch/powerpc/kernel/signal_32.c
View File

@ -44,7 +44,6 @@
#include <asm/cacheflush.h>
#ifdef CONFIG_PPC64
#include "ppc32.h"
#include <asm/ppcdebug.h>
#include <asm/unistd.h>
#include <asm/vdso.h>
#else

1
arch/powerpc/kernel/signal_64.c
View File

@ -33,7 +33,6 @@
#include <asm/ucontext.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/ppcdebug.h>
#include <asm/unistd.h>
#include <asm/cacheflush.h>
#include <asm/vdso.h>

7
arch/powerpc/mm/hash_utils_64.c
View File

@ -32,7 +32,6 @@
#include <linux/init.h>
#include <linux/signal.h>
#include <asm/ppcdebug.h>
#include <asm/processor.h>
#include <asm/pgtable.h>
#include <asm/mmu.h>
@ -194,12 +193,6 @@ void __init htab_initialize(void)
htab_size_bytes = get_hashtable_size();
pteg_count = htab_size_bytes >> 7;
/* For debug, make the HTAB 1/8 as big as it normally would be. */
ifppcdebug(PPCDBG_HTABSIZE) {
pteg_count >>= 3;
htab_size_bytes = pteg_count << 7;
}
htab_hash_mask = pteg_count - 1;
if (systemcfg->platform & PLATFORM_LPAR) {

1
arch/powerpc/mm/init_64.c
View File

@ -57,7 +57,6 @@
#include <asm/processor.h>
#include <asm/mmzone.h>
#include <asm/cputable.h>
#include <asm/ppcdebug.h>
#include <asm/sections.h>
#include <asm/system.h>
#include <asm/iommu.h>

1
arch/powerpc/mm/pgtable_64.c
View File

@ -59,7 +59,6 @@
#include <asm/processor.h>
#include <asm/mmzone.h>
#include <asm/cputable.h>
#include <asm/ppcdebug.h>
#include <asm/sections.h>
#include <asm/system.h>
#include <asm/iommu.h>

5
arch/powerpc/platforms/iseries/irq.c
View File

@ -35,7 +35,6 @@
#include <linux/irq.h>
#include <linux/spinlock.h>
#include <asm/ppcdebug.h>
#include <asm/iseries/hv_types.h>
#include <asm/iseries/hv_lp_event.h>
#include <asm/iseries/hv_call_xm.h>
@ -227,8 +226,6 @@ static void iSeries_enable_IRQ(unsigned int irq)
/* Unmask secondary INTA */
mask = 0x80000000;
HvCallPci_unmaskInterrupts(bus, subBus, deviceId, mask);
PPCDBG(PPCDBG_BUSWALK, "iSeries_enable_IRQ 0x%02X.%02X.%02X 0x%04X\n",
bus, subBus, deviceId, irq);
}
/* This is called by iSeries_activate_IRQs */
@ -310,8 +307,6 @@ static void iSeries_disable_IRQ(unsigned int irq)
/* Mask secondary INTA */
mask = 0x80000000;
HvCallPci_maskInterrupts(bus, subBus, deviceId, mask);
PPCDBG(PPCDBG_BUSWALK, "iSeries_disable_IRQ 0x%02X.%02X.%02X 0x%04X\n",
bus, subBus, deviceId, irq);
}
/*

37
arch/powerpc/platforms/iseries/pci.c
View File

@ -32,7 +32,6 @@
#include <asm/prom.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/ppcdebug.h>
#include <asm/iommu.h>
#include <asm/abs_addr.h>
@ -207,10 +206,6 @@ static struct device_node *build_device_node(HvBusNumber Bus,
struct device_node *node;
struct pci_dn *pdn;
PPCDBG(PPCDBG_BUSWALK,
"-build_device_node 0x%02X.%02X.%02X Function: %02X\n",
Bus, SubBus, AgentId, Function);
node = kmalloc(sizeof(struct device_node), GFP_KERNEL);
if (node == NULL)
return NULL;
@ -243,8 +238,6 @@ unsigned long __init find_and_init_phbs(void)
struct pci_controller *phb;
HvBusNumber bus;
PPCDBG(PPCDBG_BUSWALK, "find_and_init_phbs Entry\n");
/* Check all possible buses. */
for (bus = 0; bus < 256; bus++) {
int ret = HvCallXm_testBus(bus);
@ -261,9 +254,6 @@ unsigned long __init find_and_init_phbs(void)
phb->last_busno = bus;
phb->ops = &iSeries_pci_ops;
PPCDBG(PPCDBG_BUSWALK, "PCI:Create iSeries pci_controller(%p), Bus: %04X\n",
phb, bus);
/* Find and connect the devices. */
scan_PHB_slots(phb);
}
@ -285,11 +275,9 @@ unsigned long __init find_and_init_phbs(void)
*/
void iSeries_pcibios_init(void)
{
PPCDBG(PPCDBG_BUSWALK, "iSeries_pcibios_init Entry.\n");
iomm_table_initialize();
find_and_init_phbs();
io_page_mask = -1;
PPCDBG(PPCDBG_BUSWALK, "iSeries_pcibios_init Exit.\n");
}
/*
@ -301,8 +289,6 @@ void __init iSeries_pci_final_fixup(void)
struct device_node *node;
int DeviceCount = 0;
PPCDBG(PPCDBG_BUSWALK, "iSeries_pcibios_fixup Entry.\n");
/* Fix up at the device node and pci_dev relationship */
mf_display_src(0xC9000100);
@ -316,9 +302,6 @@ void __init iSeries_pci_final_fixup(void)
++DeviceCount;
pdev->sysdata = (void *)node;
PCI_DN(node)->pcidev = pdev;
PPCDBG(PPCDBG_BUSWALK,
"pdev 0x%p <==> DevNode 0x%p\n",
pdev, node);
allocate_device_bars(pdev);
iSeries_Device_Information(pdev, DeviceCount);
iommu_devnode_init_iSeries(node);
@ -333,13 +316,10 @@ void __init iSeries_pci_final_fixup(void)
void pcibios_fixup_bus(struct pci_bus *PciBus)
{
PPCDBG(PPCDBG_BUSWALK, "iSeries_pcibios_fixup_bus(0x%04X) Entry.\n",
PciBus->number);
}
void pcibios_fixup_resources(struct pci_dev *pdev)
{
PPCDBG(PPCDBG_BUSWALK, "fixup_resources pdev %p\n", pdev);
}
/*
@ -401,9 +381,6 @@ static void scan_EADS_bridge(HvBusNumber bus, HvSubBusNumber SubBus,
printk("found device at bus %d idsel %d func %d (AgentId %x)\n",
bus, IdSel, Function, AgentId);
/* Connect EADs: 0x18.00.12 = 0x00 */
PPCDBG(PPCDBG_BUSWALK,
"PCI:Connect EADs: 0x%02X.%02X.%02X\n",
bus, SubBus, AgentId);
HvRc = HvCallPci_getBusUnitInfo(bus, SubBus, AgentId,
iseries_hv_addr(BridgeInfo),
sizeof(struct HvCallPci_BridgeInfo));
@ -414,14 +391,6 @@ static void scan_EADS_bridge(HvBusNumber bus, HvSubBusNumber SubBus,
BridgeInfo->maxAgents,
BridgeInfo->maxSubBusNumber,
BridgeInfo->logicalSlotNumber);
PPCDBG(PPCDBG_BUSWALK,
"PCI: BridgeInfo, Type:0x%02X, SubBus:0x%02X, MaxAgents:0x%02X, MaxSubBus: 0x%02X, LSlot: 0x%02X\n",
BridgeInfo->busUnitInfo.deviceType,
BridgeInfo->subBusNumber,
BridgeInfo->maxAgents,
BridgeInfo->maxSubBusNumber,
BridgeInfo->logicalSlotNumber);
if (BridgeInfo->busUnitInfo.deviceType ==
HvCallPci_BridgeDevice) {
/* Scan_Bridge_Slot...: 0x18.00.12 */
@ -454,9 +423,6 @@ static int scan_bridge_slot(HvBusNumber Bus,
/* iSeries_allocate_IRQ.: 0x18.00.12(0xA3) */
Irq = iSeries_allocate_IRQ(Bus, 0, EADsIdSel);
PPCDBG(PPCDBG_BUSWALK,
"PCI:- allocate and assign IRQ 0x%02X.%02X.%02X = 0x%02X\n",
Bus, 0, EADsIdSel, Irq);
/*
* Connect all functions of any device found.
@ -482,9 +448,6 @@ static int scan_bridge_slot(HvBusNumber Bus,
printk("read vendor ID: %x\n", VendorId);
/* FoundDevice: 0x18.28.10 = 0x12AE */
PPCDBG(PPCDBG_BUSWALK,
"PCI:- FoundDevice: 0x%02X.%02X.%02X = 0x%04X, irq %d\n",
Bus, SubBus, AgentId, VendorId, Irq);
HvRc = HvCallPci_configStore8(Bus, SubBus, AgentId,
PCI_INTERRUPT_LINE, Irq);
if (HvRc != 0)

4
arch/powerpc/platforms/iseries/setup.c
View File

@ -71,8 +71,6 @@ extern void hvlog(char *fmt, ...);
#endif
/* Function Prototypes */
extern void ppcdbg_initialize(void);
static void build_iSeries_Memory_Map(void);
static void iseries_shared_idle(void);
static void iseries_dedicated_idle(void);
@ -309,8 +307,6 @@ static void __init iSeries_init_early(void)
ppc64_firmware_features = FW_FEATURE_ISERIES;
ppcdbg_initialize();
ppc64_interrupt_controller = IC_ISERIES;
#if defined(CONFIG_BLK_DEV_INITRD)

1
arch/powerpc/platforms/iseries/smp.c
View File

@ -40,7 +40,6 @@
#include <asm/paca.h>
#include <asm/iseries/hv_call.h>
#include <asm/time.h>
#include <asm/ppcdebug.h>
#include <asm/machdep.h>
#include <asm/cputable.h>
#include <asm/system.h>

1
arch/powerpc/platforms/pseries/iommu.c
View File

@ -37,7 +37,6 @@
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/rtas.h>
#include <asm/ppcdebug.h>
#include <asm/iommu.h>
#include <asm/pci-bridge.h>
#include <asm/machdep.h>

2
arch/powerpc/platforms/pseries/lpar.c
View File

@ -31,13 +31,13 @@
#include <asm/machdep.h>
#include <asm/abs_addr.h>
#include <asm/mmu_context.h>
#include <asm/ppcdebug.h>
#include <asm/iommu.h>
#include <asm/tlbflush.h>
#include <asm/tlb.h>
#include <asm/prom.h>
#include <asm/abs_addr.h>
#include <asm/cputable.h>
#include <asm/udbg.h>
#include "plpar_wrappers.h"

2
arch/powerpc/platforms/pseries/ras.c
View File

@ -48,7 +48,7 @@
#include <asm/ptrace.h>
#include <asm/machdep.h>
#include <asm/rtas.h>
#include <asm/ppcdebug.h>
#include <asm/udbg.h>
static unsigned char ras_log_buf[RTAS_ERROR_LOG_MAX];
static DEFINE_SPINLOCK(ras_log_buf_lock);

1
arch/powerpc/sysdev/u3_iommu.c
View File

@ -37,7 +37,6 @@
#include <linux/vmalloc.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/ppcdebug.h>
#include <asm/iommu.h>
#include <asm/pci-bridge.h>
#include <asm/machdep.h>

4
arch/ppc64/Kconfig.debug
View File

@ -55,10 +55,6 @@ config XMON_DEFAULT
xmon is normally disabled unless booted with 'xmon=on'.
Use 'xmon=off' to disable xmon init during runtime.
config PPCDBG
bool "Include PPCDBG realtime debugging"
depends on DEBUG_KERNEL
config IRQSTACKS
bool "Use separate kernel stacks when processing interrupts"
help

1
arch/ppc64/kernel/prom.c
View File

@ -46,7 +46,6 @@
#include <asm/pgtable.h>
#include <asm/pci.h>
#include <asm/iommu.h>
#include <asm/ppcdebug.h>
#include <asm/btext.h>
#include <asm/sections.h>
#include <asm/machdep.h>

1
arch/ppc64/kernel/prom_init.c
View File

@ -44,7 +44,6 @@
#include <asm/pgtable.h>
#include <asm/pci.h>
#include <asm/iommu.h>
#include <asm/ppcdebug.h>
#include <asm/btext.h>
#include <asm/sections.h>
#include <asm/machdep.h>

55
arch/ppc64/kernel/udbg.c
View File

@ -10,12 +10,10 @@
*/
#include <stdarg.h>
#define WANT_PPCDBG_TAB /* Only defined here */
#include <linux/config.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/console.h>
#include <asm/ppcdebug.h>
#include <asm/processor.h>
void (*udbg_putc)(unsigned char c);
@ -89,59 +87,6 @@ void udbg_printf(const char *fmt, ...)
va_end(args);
}
/* PPCDBG stuff */
u64 ppc64_debug_switch;
/* Special print used by PPCDBG() macro */
void udbg_ppcdbg(unsigned long debug_flags, const char *fmt, ...)
{
unsigned long active_debugs = debug_flags & ppc64_debug_switch;
if (active_debugs) {
va_list ap;
unsigned char buf[UDBG_BUFSIZE];
unsigned long i, len = 0;
for (i=0; i < PPCDBG_NUM_FLAGS; i++) {
if (((1U << i) & active_debugs) &&
trace_names[i]) {
len += strlen(trace_names[i]);
udbg_puts(trace_names[i]);
break;
}
}
snprintf(buf, UDBG_BUFSIZE, " [%s]: ", current->comm);
len += strlen(buf);
udbg_puts(buf);
while (len < 18) {
udbg_puts(" ");
len++;
}
va_start(ap, fmt);
vsnprintf(buf, UDBG_BUFSIZE, fmt, ap);
udbg_puts(buf);
va_end(ap);
}
}
unsigned long udbg_ifdebug(unsigned long flags)
{
return (flags & ppc64_debug_switch);
}
/*
* Initialize the PPCDBG state. Called before relocation has been enabled.
*/
void __init ppcdbg_initialize(void)
{
ppc64_debug_switch = PPC_DEBUG_DEFAULT; /* | PPCDBG_BUSWALK | */
/* PPCDBG_PHBINIT | PPCDBG_MM | PPCDBG_MMINIT | PPCDBG_TCEINIT | PPCDBG_TCE */;
}
/*
* Early boot console based on udbg
*/

108
include/asm-ppc64/ppcdebug.h
View File

@ -1,108 +0,0 @@
#ifndef __PPCDEBUG_H
#define __PPCDEBUG_H
/********************************************************************
* Author: Adam Litke, IBM Corp
* (c) 2001
*
* This file contains definitions and macros for a runtime debugging
* system for ppc64 (This should also work on 32 bit with a few
* adjustments.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
********************************************************************/
#include <linux/config.h>
#include <linux/types.h>
#include <asm/udbg.h>
#include <stdarg.h>
#define PPCDBG_BITVAL(X) ((1UL)<<((unsigned long)(X)))
/* Defined below are the bit positions of various debug flags in the
* ppc64_debug_switch variable.
* -- When adding new values, please enter them into trace names below --
*
* Values 62 & 63 can be used to stress the hardware page table management
* code. They must be set statically, any attempt to change them dynamically
* would be a very bad idea.
*/
#define PPCDBG_MMINIT PPCDBG_BITVAL(0)
#define PPCDBG_MM PPCDBG_BITVAL(1)
#define PPCDBG_SYS32 PPCDBG_BITVAL(2)
#define PPCDBG_SYS32NI PPCDBG_BITVAL(3)
#define PPCDBG_SYS32X PPCDBG_BITVAL(4)
#define PPCDBG_SYS32M PPCDBG_BITVAL(5)
#define PPCDBG_SYS64 PPCDBG_BITVAL(6)
#define PPCDBG_SYS64NI PPCDBG_BITVAL(7)
#define PPCDBG_SYS64X PPCDBG_BITVAL(8)
#define PPCDBG_SIGNAL PPCDBG_BITVAL(9)
#define PPCDBG_SIGNALXMON PPCDBG_BITVAL(10)
#define PPCDBG_BINFMT32 PPCDBG_BITVAL(11)
#define PPCDBG_BINFMT64 PPCDBG_BITVAL(12)
#define PPCDBG_BINFMTXMON PPCDBG_BITVAL(13)
#define PPCDBG_BINFMT_32ADDR PPCDBG_BITVAL(14)
#define PPCDBG_ALIGNFIXUP PPCDBG_BITVAL(15)
#define PPCDBG_TCEINIT PPCDBG_BITVAL(16)
#define PPCDBG_TCE PPCDBG_BITVAL(17)
#define PPCDBG_PHBINIT PPCDBG_BITVAL(18)
#define PPCDBG_SMP PPCDBG_BITVAL(19)
#define PPCDBG_BOOT PPCDBG_BITVAL(20)
#define PPCDBG_BUSWALK PPCDBG_BITVAL(21)
#define PPCDBG_PROM PPCDBG_BITVAL(22)
#define PPCDBG_RTAS PPCDBG_BITVAL(23)
#define PPCDBG_HTABSTRESS PPCDBG_BITVAL(62)
#define PPCDBG_HTABSIZE PPCDBG_BITVAL(63)
#define PPCDBG_NONE (0UL)
#define PPCDBG_ALL (0xffffffffUL)
/* The default initial value for the debug switch */
#define PPC_DEBUG_DEFAULT 0
/* #define PPC_DEBUG_DEFAULT PPCDBG_ALL */
#define PPCDBG_NUM_FLAGS 64
extern u64 ppc64_debug_switch;
#ifdef WANT_PPCDBG_TAB
/* A table of debug switch names to allow name lookup in xmon
* (and whoever else wants it.
*/
char *trace_names[PPCDBG_NUM_FLAGS] = {
/* Known debug names */
"mminit", "mm",
"syscall32", "syscall32_ni", "syscall32x", "syscall32m",
"syscall64", "syscall64_ni", "syscall64x",
"signal", "signal_xmon",
"binfmt32", "binfmt64", "binfmt_xmon", "binfmt_32addr",
"alignfixup", "tceinit", "tce", "phb_init",
"smp", "boot", "buswalk", "prom",
"rtas"
};
#else
extern char *trace_names[64];
#endif /* WANT_PPCDBG_TAB */
#ifdef CONFIG_PPCDBG
/* Macro to conditionally print debug based on debug_switch */
#define PPCDBG(...) udbg_ppcdbg(__VA_ARGS__)
/* Macro to conditionally call a debug routine based on debug_switch */
#define PPCDBGCALL(FLAGS,FUNCTION) ifppcdebug(FLAGS) FUNCTION
/* Macros to test for debug states */
#define ifppcdebug(FLAGS) if (udbg_ifdebug(FLAGS))
#define ppcdebugset(FLAGS) (udbg_ifdebug(FLAGS))
#define PPCDBG_BINFMT (test_thread_flag(TIF_32BIT) ? PPCDBG_BINFMT32 : PPCDBG_BINFMT64)
#else
#define PPCDBG(...) do {;} while (0)
#define PPCDBGCALL(FLAGS,FUNCTION) do {;} while (0)
#define ifppcdebug(...) if (0)
#define ppcdebugset(FLAGS) (0)
#endif /* CONFIG_PPCDBG */
#endif /*__PPCDEBUG_H */

3
include/asm-ppc64/udbg.h
View File

@ -23,9 +23,6 @@ extern int udbg_read(char *buf, int buflen);
extern void register_early_udbg_console(void);
extern void udbg_printf(const char *fmt, ...);
extern void udbg_ppcdbg(unsigned long flags, const char *fmt, ...);
extern unsigned long udbg_ifdebug(unsigned long flags);
extern void __init ppcdbg_initialize(void);
extern void udbg_init_uart(void __iomem *comport, unsigned int speed);