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x86/oprofile: introduce oprofile_add_data64()

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The IBS implemention writes 64 bit register values to the cpu buffer
by writing two 32 values using oprofile_add_data(). This patch
introduces oprofile_add_data64() to write a single 64 bit value to the
buffer.

Signed-off-by: Robert Richter <[email protected]>
This commit is contained in:
Robert Richter 2009-06-03 20:54:56 +02:00
commit 51563a0e56
3 changed files with 25 additions and 18 deletions
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15
drivers/oprofile/cpu_buffer.c
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@ -406,6 +406,21 @@ int oprofile_add_data(struct op_entry *entry, unsigned long val)
return op_cpu_buffer_add_data(entry, val);
}
int oprofile_add_data64(struct op_entry *entry, u64 val)
{
if (!entry->event)
return 0;
if (op_cpu_buffer_get_size(entry) < 2)
/*
* the function returns 0 to indicate a too small
* buffer, even if there is some space left
*/
return 0;
if (!op_cpu_buffer_add_data(entry, (u32)val))
return 0;
return op_cpu_buffer_add_data(entry, (u32)(val >> 32));
}
int oprofile_write_commit(struct op_entry *entry)
{
if (!entry->event)