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Commit 364a1246522f99cbe58040e99af007ada31034ed

Authored by Heiko Schocher
Committed by Benjamin Herrenschmidt
1 parent bee376ff4c
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

powerpc/time: printk time stamp init not correct 

problem:

I see sometimes on my mpc5200 based board such printk timing
information:

[    0.000000] NR_IRQS:512 nr_irqs:512 16
[    0.000000] MPC52xx PIC is up and running!
[    0.000000] clocksource: timebase mult[79364d9] shift[22] registered
[    0.000000] console [ttyPSC0] enabled
[  130.300633] pid_max: default: 32768 minimum: 301
[  130.305647] Mount-cache hash table entries: 512
[  130.315818] NET: Registered protocol family 16

reason:
if the tbu not starts from 0 when linux boots, boot_tb
maybe could not store the real 64 bit tbu value, because
boot_tp is only a 32 bit unsigned long.

solution:
change boot_tb to u64

[BenH: Made it u64 instead of unsigned long long]

Signed-off-by: Heiko Schocher <hs@denx.de>
cc: Wolfgang Denk <wd@denx.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff

arch/powerpc/kernel/time.c
Diff comments   View file @ 364a124
... ... @@ -155,7 +155,7 @@
155 155  
156 156 static u64 tb_to_ns_scale __read_mostly;
157 157 static unsigned tb_to_ns_shift __read_mostly;
158   -static unsigned long boot_tb __read_mostly;
  158 +static u64 boot_tb __read_mostly;
159 159  
160 160 extern struct timezone sys_tz;
161 161 static long timezone_offset;