linux_dsm_epyc7002/arch
Robert Richter 64683da664 oprofile/x86: implement IBS cpuid feature detection
This patch adds IBS feature detection using cpuid flags. An IBS
capability mask is introduced to test for certain IBS features. The
bit mask is the same as for IBS cpuid feature flags (Fn8000_001B_EAX),
but bit 0 is used to indicate the existence of IBS.

The patch also changes the handling of the IbsOpCntCtl bit (periodic
op counter count control). The oprofilefs file for this feature
(ibs_op/dispatched_ops) will be only exposed if the feature is
available, also the default for the bit is set to count clock cycles.

In general, the userland can detect the availability of a feature by
checking for the corresponding file in oprofilefs. If it exists, the
feature also exists. This may lead to a dynamic file layout depending
on the cpu type with that the userland has to deal with. Current
opcontrol is compatible.

Signed-off-by: Robert Richter <robert.richter@amd.com>
2010-02-26 15:14:02 +01:00
..
alpha alpha: cpumask_of_node() should handle -1 as a node 2010-01-14 13:21:35 -05:00
arm OMAP: hsmmc: fix memory leak 2010-02-10 09:20:33 -08:00
avr32 avr32: clean up memory allocation in at32_add_device_mci 2009-12-28 12:33:00 +01:00
blackfin blackfin,kgdb: Do not put PC in gdb_regs into retx. 2010-01-07 11:58:37 -06:00
cris Merge branch 'for-33' of git://repo.or.cz/linux-kbuild 2009-12-17 07:23:42 -08:00
frv FDPIC: Respect PT_GNU_STACK exec protection markings when creating NOMMU stack 2010-01-06 18:16:02 -08:00
h8300 Merge branch 'for-33' of git://repo.or.cz/linux-kbuild 2009-12-17 07:23:42 -08:00
ia64 [IA64] move fnptr definition inside #ifdef __KERNEL__ 2010-01-08 10:53:28 -08:00
m32r elf: kill USE_ELF_CORE_DUMP 2009-12-16 07:20:12 -08:00
m68k m68knommu: fix definitions of __pa() and __va() 2010-01-12 20:51:45 -08:00
m68knommu m68knommu: fix invalid flags on coldfire pit clocksource 2010-01-16 12:15:38 -08:00
microblaze microblaze: Invalidate dcache before enabling it 2010-02-08 11:39:18 +01:00
mips MIPS: Don't probe reserved EntryHi bits. 2010-02-10 22:15:46 +01:00
mn10300 mn10300: update the ASB2303 defconfig 2010-01-11 09:34:10 -08:00
parisc parisc: fix tracing of signals 2010-02-12 08:51:58 -08:00
powerpc powerpc: Fix address masking bug in hpte_need_flush() 2010-02-10 13:58:06 +11:00
s390 [S390] Fix struct _lowcore layout. 2010-02-09 09:46:23 +01:00
score mm: make totalhigh_pages unsigned long 2010-01-11 09:34:03 -08:00
sh sh: Remove superfluous setup_frame_reg call 2010-02-08 10:47:11 +09:00
sparc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 2010-02-11 14:00:27 -08:00
um Unrot uml mconsole a bit 2010-01-14 09:05:26 -05:00
x86 oprofile/x86: implement IBS cpuid feature detection 2010-02-26 15:14:02 +01:00
xtensa Merge branch 'for-33' of git://repo.or.cz/linux-kbuild 2009-12-17 07:23:42 -08:00
.gitignore
Kconfig oprofile/x86: remove OPROFILE_IBS config option 2010-02-26 15:13:55 +01:00