From: Anshuman Khandual <khandual@linux.vnet.ibm.com>
To: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org
Cc: michael@ellerman.id.au, mikey@neuling.org
Subject: [PATCH V2 1/5] powerpc, perf: Add new BHRB related instructions on POWER8
Date: Tue, 16 Apr 2013 21:24:06 +0530 [thread overview]
Message-ID: <1366127650-1952-2-git-send-email-khandual@linux.vnet.ibm.com> (raw)
In-Reply-To: <1366127650-1952-1-git-send-email-khandual@linux.vnet.ibm.com>
This patch adds new instructions support for reading various
BHRB entries and also clearing the BHRB buffer.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/ppc-opcode.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index 8752bc8..93ae5a1 100644
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -82,6 +82,7 @@
#define __REGA0_R31 31
/* sorted alphabetically */
+#define PPC_INST_BHRBE 0x7c00025c
#define PPC_INST_DCBA 0x7c0005ec
#define PPC_INST_DCBA_MASK 0xfc0007fe
#define PPC_INST_DCBAL 0x7c2005ec
@@ -297,6 +298,12 @@
#define PPC_NAP stringify_in_c(.long PPC_INST_NAP)
#define PPC_SLEEP stringify_in_c(.long PPC_INST_SLEEP)
+/* BHRB instructions */
+#define PPC_CLRBHRB stringify_in_c(.long 0x7c00035c)
+#define PPC_MFBHRBE(r, n) stringify_in_c(.long PPC_INST_BHRBE | \
+ __PPC_RS(r) | \
+ (((n) & 0x1f) << 11))
+
/* Transactional memory instructions */
#define TRECHKPT stringify_in_c(.long PPC_INST_TRECHKPT)
#define TRECLAIM(r) stringify_in_c(.long PPC_INST_TRECLAIM \
--
1.7.11.7
next prev parent reply other threads:[~2013-04-16 15:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-16 15:54 [PATCH V2 0/5] powerpc, perf: BHRB based branch stack enablement " Anshuman Khandual
2013-04-16 15:54 ` Anshuman Khandual [this message]
2013-04-16 15:54 ` [PATCH V2 2/5] powerpc, perf: Add basic assembly code to read BHRB entries " Anshuman Khandual
2013-04-16 17:23 ` Segher Boessenkool
2013-04-17 4:00 ` Anshuman Khandual
2013-04-16 15:54 ` [PATCH V2 3/5] powerpc, perf: Add new BHRB related generic functions, data and flags Anshuman Khandual
2013-04-16 15:54 ` [PATCH V2 4/5] powerpc, perf: Define BHRB generic functions, data and flags for POWER8 Anshuman Khandual
2013-04-16 15:54 ` [PATCH V2 5/5] powerpc, perf: Enable branch stack sampling framework support with BHRB Anshuman Khandual
2013-04-17 7:08 ` Michael Ellerman
2013-04-17 12:07 ` Anshuman Khandual
2013-04-18 2:58 ` Anshuman Khandual
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