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| author | Olaf Hering <olh@suse.de> | 2005-08-04 19:26:42 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2005-08-29 10:53:37 +1000 |
| commit | b13cfd173f73c3f6f9a307b7b6e64d45fbd756b2 (patch) | |
| tree | 47d9a6ab54c4b068e3300d026c4402c14f53d384 /arch | |
| parent | bef5686229810709091fb6e505071f4aa41e3760 (diff) | |
| download | linux-3.10-b13cfd173f73c3f6f9a307b7b6e64d45fbd756b2.tar.gz linux-3.10-b13cfd173f73c3f6f9a307b7b6e64d45fbd756b2.tar.bz2 linux-3.10-b13cfd173f73c3f6f9a307b7b6e64d45fbd756b2.zip | |
[PATCH] ppc64: allow xmon=off
If both CONFIG_XMON and CONFIG_XMON_DEFAULT is enabled in the .config,
there is no way to disable xmon again. setup_system calls first xmon_init,
later parse_early_param. So a new 'xmon=off' cmdline option will do the right
thing.
Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ppc64/kernel/setup.c | 8 | ||||
| -rw-r--r-- | arch/ppc64/xmon/start.c | 2 | ||||
| -rw-r--r-- | arch/ppc64/xmon/xmon.c | 28 |
3 files changed, 25 insertions, 13 deletions
diff --git a/arch/ppc64/kernel/setup.c b/arch/ppc64/kernel/setup.c index e9c24d2dbd9..b3ef8df1298 100644 --- a/arch/ppc64/kernel/setup.c +++ b/arch/ppc64/kernel/setup.c @@ -627,7 +627,7 @@ void __init setup_system(void) * Initialize xmon */ #ifdef CONFIG_XMON_DEFAULT - xmon_init(); + xmon_init(1); #endif /* * Register early console @@ -1343,11 +1343,13 @@ static int __init early_xmon(char *p) /* ensure xmon is enabled */ if (p) { if (strncmp(p, "on", 2) == 0) - xmon_init(); + xmon_init(1); + if (strncmp(p, "off", 3) == 0) + xmon_init(0); if (strncmp(p, "early", 5) != 0) return 0; } - xmon_init(); + xmon_init(1); debugger(NULL); return 0; diff --git a/arch/ppc64/xmon/start.c b/arch/ppc64/xmon/start.c index a9265bcc79b..f86b584acd7 100644 --- a/arch/ppc64/xmon/start.c +++ b/arch/ppc64/xmon/start.c @@ -27,7 +27,7 @@ static void sysrq_handle_xmon(int key, struct pt_regs *pt_regs, struct tty_struct *tty) { /* ensure xmon is enabled */ - xmon_init(); + xmon_init(1); debugger(pt_regs); } diff --git a/arch/ppc64/xmon/xmon.c b/arch/ppc64/xmon/xmon.c index 05539439e6b..45908b10acd 100644 --- a/arch/ppc64/xmon/xmon.c +++ b/arch/ppc64/xmon/xmon.c @@ -2496,15 +2496,25 @@ static void dump_stab(void) } } -void xmon_init(void) -{ - __debugger = xmon; - __debugger_ipi = xmon_ipi; - __debugger_bpt = xmon_bpt; - __debugger_sstep = xmon_sstep; - __debugger_iabr_match = xmon_iabr_match; - __debugger_dabr_match = xmon_dabr_match; - __debugger_fault_handler = xmon_fault_handler; +void xmon_init(int enable) +{ + if (enable) { + __debugger = xmon; + __debugger_ipi = xmon_ipi; + __debugger_bpt = xmon_bpt; + __debugger_sstep = xmon_sstep; + __debugger_iabr_match = xmon_iabr_match; + __debugger_dabr_match = xmon_dabr_match; + __debugger_fault_handler = xmon_fault_handler; + } else { + __debugger = NULL; + __debugger_ipi = NULL; + __debugger_bpt = NULL; + __debugger_sstep = NULL; + __debugger_iabr_match = NULL; + __debugger_dabr_match = NULL; + __debugger_fault_handler = NULL; + } } void dump_segments(void) |