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author | Robert Richter <robert.richter@amd.com> | 2009-06-03 20:54:56 +0200 |
---|---|---|
committer | Robert Richter <robert.richter@amd.com> | 2009-06-11 20:16:00 +0200 |
commit | 51563a0e5650d0d76539625388d72d62b34c726e (patch) | |
tree | 17148f56578af8f7d7d67491f8b7eb05d99acdd9 | |
parent | c572ae4efd1b0a5cc76c5e6aae05c1b182b6a69c (diff) | |
download | linux-stable-51563a0e5650d0d76539625388d72d62b34c726e.tar.gz linux-stable-51563a0e5650d0d76539625388d72d62b34c726e.tar.bz2 linux-stable-51563a0e5650d0d76539625388d72d62b34c726e.zip |
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>
-rw-r--r-- | arch/x86/oprofile/op_model_amd.c | 27 | ||||
-rw-r--r-- | drivers/oprofile/cpu_buffer.c | 15 | ||||
-rw-r--r-- | include/linux/oprofile.h | 1 |
3 files changed, 25 insertions, 18 deletions
diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c index 6493ef7ae9ad..cc930467575d 100644 --- a/arch/x86/oprofile/op_model_amd.c +++ b/arch/x86/oprofile/op_model_amd.c @@ -140,13 +140,10 @@ op_amd_handle_ibs(struct pt_regs * const regs, rdmsrl(MSR_AMD64_IBSFETCHLINAD, val); oprofile_write_reserve(&entry, regs, val, IBS_FETCH_CODE, IBS_FETCH_SIZE); - oprofile_add_data(&entry, (u32)val); - oprofile_add_data(&entry, (u32)(val >> 32)); - oprofile_add_data(&entry, (u32)ctl); - oprofile_add_data(&entry, (u32)(ctl >> 32)); + oprofile_add_data64(&entry, val); + oprofile_add_data64(&entry, ctl); rdmsrl(MSR_AMD64_IBSFETCHPHYSAD, val); - oprofile_add_data(&entry, (u32)val); - oprofile_add_data(&entry, (u32)(val >> 32)); + oprofile_add_data64(&entry, val); oprofile_write_commit(&entry); /* reenable the IRQ */ @@ -162,23 +159,17 @@ op_amd_handle_ibs(struct pt_regs * const regs, rdmsrl(MSR_AMD64_IBSOPRIP, val); oprofile_write_reserve(&entry, regs, val, IBS_OP_CODE, IBS_OP_SIZE); - oprofile_add_data(&entry, (u32)val); - oprofile_add_data(&entry, (u32)(val >> 32)); + oprofile_add_data64(&entry, val); rdmsrl(MSR_AMD64_IBSOPDATA, val); - oprofile_add_data(&entry, (u32)val); - oprofile_add_data(&entry, (u32)(val >> 32)); + oprofile_add_data64(&entry, val); rdmsrl(MSR_AMD64_IBSOPDATA2, val); - oprofile_add_data(&entry, (u32)val); - oprofile_add_data(&entry, (u32)(val >> 32)); + oprofile_add_data64(&entry, val); rdmsrl(MSR_AMD64_IBSOPDATA3, val); - oprofile_add_data(&entry, (u32)val); - oprofile_add_data(&entry, (u32)(val >> 32)); + oprofile_add_data64(&entry, val); rdmsrl(MSR_AMD64_IBSDCLINAD, val); - oprofile_add_data(&entry, (u32)val); - oprofile_add_data(&entry, (u32)(val >> 32)); + oprofile_add_data64(&entry, val); rdmsrl(MSR_AMD64_IBSDCPHYSAD, val); - oprofile_add_data(&entry, (u32)val); - oprofile_add_data(&entry, (u32)(val >> 32)); + oprofile_add_data64(&entry, val); oprofile_write_commit(&entry); /* reenable the IRQ */ diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c index 50640cc5eef2..a7aae24f2889 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) diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h index dbbe2dbc4418..d68d2ed94f15 100644 --- a/include/linux/oprofile.h +++ b/include/linux/oprofile.h @@ -179,6 +179,7 @@ void oprofile_write_reserve(struct op_entry *entry, struct pt_regs * const regs, unsigned long pc, int code, int size); int oprofile_add_data(struct op_entry *entry, unsigned long val); +int oprofile_add_data64(struct op_entry *entry, u64 val); int oprofile_write_commit(struct op_entry *entry); #endif /* OPROFILE_H */ |