document clocksources

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>

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 09220a1..aae2282 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -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.
                        Format: { pit | tsc | cyclone | pmtmr }
 
                        clocksource is not available, it defaults to PIT.
                        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
                        oops report.
                        Range: 0 - 8192
        code_bytes      [IA32] How many bytes of object code to print in an
                        oops report.
                        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]
                        Set communications timeout in tenths of a second
                        (default 15).
        tipar.timeout=  [HW,PPT]
                        Set communications timeout in tenths of a second
                        (default 15).