powerpc: Add HAVE_PERF_USER_STACK_DUMP support

With perf regs support enabled for powerpc, in commit ed4a4ef85cf5
("powerpc/perf: Add support for sampling interrupt register state"),
the support for obtaining perf user stack dump is already enabled. This
patch declares the support for same and also updates documentation to
mark the support for perf-regs and perf-stackdump.

Signed-off-by: Chandan Kumar <chandan.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/Documentation/features/perf/perf-regs/arch-support.txt b/Documentation/features/perf/perf-regs/arch-support.txt
index e2b4a78ec5439b2d36332bc00e481910a491d49e..f179b1fb26ef49734ff84bf1deee48bfe8915fdd 100644 (file)
--- a/Documentation/features/perf/perf-regs/arch-support.txt
+++ b/Documentation/features/perf/perf-regs/arch-support.txt
@@ -27,7 +27,7 @@
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
-    |     powerpc: | TODO |
+    |     powerpc: |  ok  |
     |        s390: | TODO |
     |       score: | TODO |
     |          sh: | TODO |

diff --git a/Documentation/features/perf/perf-stackdump/arch-support.txt b/Documentation/features/perf/perf-stackdump/arch-support.txt
index 3dc24b0673c0bf6659db5677ccb822fc3954692d..85777c5c6353712c51b6ae58ad322af7ebcd9d74 100644 (file)
--- a/Documentation/features/perf/perf-stackdump/arch-support.txt
+++ b/Documentation/features/perf/perf-stackdump/arch-support.txt
@@ -27,7 +27,7 @@
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
-    |     powerpc: | TODO |
+    |     powerpc: |  ok  |
     |        s390: | TODO |
     |       score: | TODO |
     |          sh: | TODO |

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index b14966d671495038eaaba9cfdad45b395e7629eb..a630ac29522ccff546b85af1fbf2839569bc0f9e 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -117,6 +117,7 @@ config PPC
        select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
        select HAVE_PERF_EVENTS
        select HAVE_PERF_REGS
+       select HAVE_PERF_USER_STACK_DUMP
        select HAVE_REGS_AND_STACK_ACCESS_API
        select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
        select ARCH_WANT_IPC_PARSE_VERSION