BMC/Intel-BMC/linux.git/arch/powerpc/include/asm/kprobes.h, branch dev

powerpc/kprobes: Fix kallsyms lookup across powerpc ABIv1 and ABIv2

2015-01-23T03:02:51+00:00

Currently, all non-dot symbols are being treated as function descriptors in ABIv1. This is incorrect and is resulting in perf probe not working: # perf probe do_fork Added new event: Failed to write event: Invalid argument Error: Failed to add events. # dmesg | tail -1 [192268.073063] Could not insert probe at _text+768432: -22 perf probe bases all kernel probes on _text and writes, for example, "p:probe/do_fork _text+768432" to /sys/kernel/debug/tracing/kprobe_events. In-kernel, _text is being considered to be a function descriptor and is resulting in the above error. Fix this by changing how we lookup symbol addresses on ppc64. We first check for the dot variant of a symbol and look at the non-dot variant only if that fails. In this manner, we avoid having to look at the function descriptor. While at it, also separate out how this works on ABIv2 where we don't have dot symbols, but need to use the local entry point. Signed-off-by: Naveen N. Rao Signed-off-by: Michael Ellerman

powerpc/kprobes: Fix ABIv2 issues with kprobe_lookup_name

2014-04-23T00:05:33+00:00

Use ppc_function_entry in places where we previously assumed function descriptors exist. Signed-off-by: Anton Blanchard

powerpc/kprobes: Rename opcode_t in probes.h to ppc_opcode_t

2012-09-06T23:48:50+00:00

commit: 8b7b80b9ebb46dd88fbb94e918297295cf312b59 [24/29] powerpc: Uprobes port to powerpc Caused a clash with the fore200e driver: In file included from drivers/atm/fore200e.c:70:0: drivers/atm/fore200e.h:263:3: error: redefinition of typedef 'opcode_t' with different type arch/powerpc/include/asm/probes.h:25:13: note: previous declaration of 'opcode_t' was here Fix the namespace clash by making opcode_t in probes.h to ppc_opcode_t. Signed-off-by: Ananth N Mavinakayanahalli Signed-off-by: Benjamin Herrenschmidt

powerpc: Consolidate {k,u}probe definitions

2012-09-05T05:19:36+00:00

Move is_trap() and relatives to a common file to be shared between kprobes and uprobes. Code movement only; no change in functionality. Suggested by Michael Ellerman. Signed-off-by: Ananth N Mavinakayanahalli Signed-off-by: Benjamin Herrenschmidt

Fix common misspellings

2011-03-31T14:26:23+00:00

Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi

powerpc: Move include files to arch/powerpc/include/asm

2008-08-04T02:02:00+00:00

from include/asm-powerpc. This is the result of a mkdir arch/powerpc/include/asm git mv include/asm-powerpc/* arch/powerpc/include/asm Followed by a few documentation/comment fixups and a couple of places where was being used explicitly. Of the latter only one was outside the arch code and it is a driver only built for powerpc. Signed-off-by: Stephen Rothwell Signed-off-by: Paul Mackerras