Re: [PATCH V3 1/5] powerpc, perf: Add new BHRB related instructions for POWER8

2013-04-22 Thread Anshuman Khandual
On 04/22/2013 08:20 AM, Michael Neuling wrote: > Michael Ellerman wrote: > >> On Mon, Apr 22, 2013 at 11:13:43AM +1000, Michael Neuling wrote: >>> Michael Ellerman wrote: >>> On Thu, Apr 18, 2013 at 05:56:12PM +0530, Anshuman Khandual wrote: > This patch adds new POWER8 instruction enco

Re: [PATCH V3 1/5] powerpc, perf: Add new BHRB related instructions for POWER8

2013-04-22 Thread Anshuman Khandual
On 04/22/2013 08:20 AM, Michael Neuling wrote: > Michael Ellerman wrote: > >> On Mon, Apr 22, 2013 at 11:13:43AM +1000, Michael Neuling wrote: >>> Michael Ellerman wrote: >>> On Thu, Apr 18, 2013 at 05:56:12PM +0530, Anshuman Khandual wrote: > This patch adds new POWER8 instruction enco

Re: [PATCH V3 1/5] powerpc, perf: Add new BHRB related instructions for POWER8

2013-04-21 Thread Anshuman Khandual
On 04/22/2013 05:11 AM, Michael Ellerman wrote: > On Thu, Apr 18, 2013 at 05:56:12PM +0530, Anshuman Khandual wrote: >> This patch adds new POWER8 instruction encoding for reading >> the BHRB buffer entries and also clearing it. Encoding for >> "clrbhrb" instruction is straight forward. > > Which

Re: [PATCH V3 1/5] powerpc, perf: Add new BHRB related instructions for POWER8

2013-04-21 Thread Michael Neuling
Michael Ellerman wrote: > On Mon, Apr 22, 2013 at 11:13:43AM +1000, Michael Neuling wrote: > > Michael Ellerman wrote: > > > > > On Thu, Apr 18, 2013 at 05:56:12PM +0530, Anshuman Khandual wrote: > > > > This patch adds new POWER8 instruction encoding for reading > > > > the BHRB buffer entries

Re: [PATCH V3 1/5] powerpc, perf: Add new BHRB related instructions for POWER8

2013-04-21 Thread Michael Ellerman
On Mon, Apr 22, 2013 at 11:13:43AM +1000, Michael Neuling wrote: > Michael Ellerman wrote: > > > On Thu, Apr 18, 2013 at 05:56:12PM +0530, Anshuman Khandual wrote: > > > This patch adds new POWER8 instruction encoding for reading > > > the BHRB buffer entries and also clearing it. Encoding for >

Re: [PATCH V3 1/5] powerpc, perf: Add new BHRB related instructions for POWER8

2013-04-21 Thread Michael Neuling
Michael Ellerman wrote: > On Thu, Apr 18, 2013 at 05:56:12PM +0530, Anshuman Khandual wrote: > > This patch adds new POWER8 instruction encoding for reading > > the BHRB buffer entries and also clearing it. Encoding for > > "clrbhrb" instruction is straight forward. > > Which is "clear branch hi

Re: [PATCH V3 1/5] powerpc, perf: Add new BHRB related instructions for POWER8

2013-04-21 Thread Michael Ellerman
On Thu, Apr 18, 2013 at 05:56:12PM +0530, Anshuman Khandual wrote: > This patch adds new POWER8 instruction encoding for reading > the BHRB buffer entries and also clearing it. Encoding for > "clrbhrb" instruction is straight forward. Which is "clear branch history rolling buffer" ? > But "mfbhrb

[PATCH V3 1/5] powerpc, perf: Add new BHRB related instructions for POWER8

2013-04-18 Thread Anshuman Khandual
This patch adds new POWER8 instruction encoding for reading the BHRB buffer entries and also clearing it. Encoding for "clrbhrb" instruction is straight forward. But "mfbhrbe" encoding involves reading a certain index of BHRB buffer into a particular GPR register. Signed-off-by: Anshuman Khandual