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author | Robert Richter <robert.richter@amd.com> | 2009-06-03 20:54:56 +0200 |
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committer | Robert Richter <robert.richter@amd.com> | 2009-06-11 20:16:00 +0200 |
commit | 51563a0e5650d0d76539625388d72d62b34c726e (patch) | |
tree | 17148f56578af8f7d7d67491f8b7eb05d99acdd9 /drivers/oprofile/cpu_buffer.c | |
parent | c572ae4efd1b0a5cc76c5e6aae05c1b182b6a69c (diff) | |
download | kernel_samsung_aries-51563a0e5650d0d76539625388d72d62b34c726e.zip kernel_samsung_aries-51563a0e5650d0d76539625388d72d62b34c726e.tar.gz kernel_samsung_aries-51563a0e5650d0d76539625388d72d62b34c726e.tar.bz2 |
x86/oprofile: introduce oprofile_add_data64()
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 <robert.richter@amd.com>
Diffstat (limited to 'drivers/oprofile/cpu_buffer.c')
-rw-r--r-- | drivers/oprofile/cpu_buffer.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c index 50640cc..a7aae24 100644 --- a/drivers/oprofile/cpu_buffer.c +++ b/drivers/oprofile/cpu_buffer.c @@ -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) |