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document clocksources

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Document the available clocksources per platform and move clocksource= into
the correct (alpha) location in the file.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Randy Dunlap 2007-05-23 13:58:16 -07:00 committed by Linus Torvalds
parent 53a2731f93
commit 3d6ac98431
1 changed files with 20 additions and 4 deletions
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24
Documentation/kernel-parameters.txt
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@ -396,6 +396,26 @@ and is between 256 and 4096 characters. It is defined in the file
clocksource is not available, it defaults to PIT. clocksource is not available, it defaults to PIT.
Format: { pit | tsc | cyclone | pmtmr } Format: { pit | tsc | cyclone | pmtmr }
clocksource= [GENERIC_TIME] Override the default clocksource
Format: <string>
Override the default clocksource and use the clocksource
with the name specified.
Some clocksource names to choose from, depending on
the platform:
[all] jiffies (this is the base, fallback clocksource)
[ACPI] acpi_pm
[ARM] imx_timer1,OSTS,netx_timer,mpu_timer2,
pxa_timer,timer3,32k_counter,timer0_1
[AVR32] avr32
[IA-32] pit,hpet,tsc,vmi-timer;
scx200_hrt on Geode; cyclone on IBM x440
[MIPS] MIPS
[PARISC] cr16
[S390] tod
[SH] SuperH
[SPARC64] tick
[X86-64] hpet,tsc
code_bytes [IA32] How many bytes of object code to print in an code_bytes [IA32] How many bytes of object code to print in an
oops report. oops report.
Range: 0 - 8192 Range: 0 - 8192
@ -1807,10 +1827,6 @@ and is between 256 and 4096 characters. It is defined in the file
time Show timing data prefixed to each printk message line time Show timing data prefixed to each printk message line
clocksource= [GENERIC_TIME] Override the default clocksource
Override the default clocksource and use the clocksource
with the name specified.
tipar.timeout= [HW,PPT] tipar.timeout= [HW,PPT]
Set communications timeout in tenths of a second Set communications timeout in tenths of a second
(default 15). (default 15).