Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=efb9ca08b5a2374b29938cdcab417ce4feb14b54
Commit: efb9ca08b5a2374b29938cdcab417ce4feb14b54
Parent: c6563e85f73e5806d58d8b0230edecbc65537200
Author: Ralf Baechle <[EMAIL PROTECTED]>
AuthorDate: Thu Nov 8 11:37:47 2007 +0000
Committer: Ralf Baechle <[EMAIL PROTECTED]>
CommitDate: Thu Nov 15 23:21:49 2007 +0000
[MIPS] Change get_cycles to always return 0.
This avoids us executing an mfc0 c0_count instruction on processors which
don't have but also on certain R4000 and R4400 versions where reading from
the count register just in the very moment when its value equals
c0_compare will result in the timer interrupt getting lost.
There is still a number of users of get_cycles remaining outside the
arch code:
crypto/tcrypt.c: start = get_cycles();
crypto/tcrypt.c: end = get_cycles();
crypto/tcrypt.c: start = get_cycles();
crypto/tcrypt.c: end = get_cycles();
crypto/tcrypt.c: start = get_cycles();
crypto/tcrypt.c: end = get_cycles();
drivers/char/hangcheck-timer.c: return get_cycles();
drivers/char/hangcheck-timer.c: printk("Hangcheck: Using get_cycles().\n");
drivers/char/random.c: sample.cycles = get_cycles();
drivers/input/joystick/analog.c:#define GET_TIME(x) do { x =
get_cycles(); }
include/linux/arcdevice.h: _x = get_cycles(); \
include/linux/arcdevice.h: _y = get_cycles(); \
mm/slub.c: if (!s->defrag_ratio || get_cycles() % 1024 >
s->defrag_ratio)
mm/slub.c: p += 64 + (get_cycles() & 0xff) * sizeof(void *);
Signed-off-by: Ralf Baechle <[EMAIL PROTECTED]>
---
include/asm-mips/timex.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/asm-mips/timex.h b/include/asm-mips/timex.h
index 5816ad1..6529704 100644
--- a/include/asm-mips/timex.h
+++ b/include/asm-mips/timex.h
@@ -35,7 +35,7 @@ typedef unsigned int cycles_t;
static inline cycles_t get_cycles(void)
{
- return read_c0_count();
+ return 0;
}
#endif /* __KERNEL__ */
-
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