Naveen N. Rao 290e307076 powerpc/kprobes: Fix handling of function offsets on ABIv2 ... commit 239aeba764 ("perf powerpc: Fix kprobe and kretprobe handling with kallsyms on ppc64le") changed how we use the offset field in struct kprobe on ABIv2. perf now offsets from the global entry point if an offset is specified and otherwise chooses the local entry point. Fix the same in kernel for kprobe API users. We do this by extending kprobe_lookup_name() to accept an additional parameter to indicate the offset specified with the kprobe registration. If offset is 0, we return the local function entry and return the global entry point otherwise. With: # cd /sys/kernel/debug/tracing/ # echo "p _do_fork" >> kprobe_events # echo "p _do_fork+0x10" >> kprobe_events before this patch: # cat ../kprobes/list c0000000000d0748 k _do_fork+0x8 [DISABLED] c0000000000d0758 k _do_fork+0x18 [DISABLED] c0000000000412b0 k kretprobe_trampoline+0x0 [OPTIMIZED] and after: # cat ../kprobes/list c0000000000d04c8 k _do_fork+0x8 [DISABLED] c0000000000d04d0 k _do_fork+0x10 [DISABLED] c0000000000412b0 k kretprobe_trampoline+0x0 [OPTIMIZED] Acked-by: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2017-04-20 23:18:55 +10:00
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acpi	Merge branches 'acpi-bus', 'acpi-sleep' and 'acpi-processor'	2017-02-20 14:28:03 +01:00
asm-generic	mm: convert generic code to 5-level paging	2017-03-09 11:48:47 -08:00
clocksource	…
crypto	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
drm	sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>	2017-03-02 08:42:37 +01:00
dt-bindings	scripts/spelling.txt: add "overide" pattern and fix typo instances	2017-03-09 17:01:09 -08:00
keys	KEYS: Differentiate uses of rcu_dereference_key() and user_key_payload()	2017-03-02 10:09:00 +11:00
kvm	…
linux	powerpc/kprobes: Fix handling of function offsets on ABIv2	2017-04-20 23:18:55 +10:00
math-emu	…
media	media fixes for v4.11-rc2	2017-03-09 15:50:56 -08:00
memory	…
misc	…
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-03-14 21:31:23 -07:00
pcmcia	…
ras	…
rdma	sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>	2017-03-02 08:42:31 +01:00
rxrpc	…
scsi	scsi: mpt3sas: Avoid sleeping in interrupt context	2017-03-01 21:52:13 -05:00
soc	ARC updates for 4.11 rc1	2017-02-22 10:33:53 -08:00
sound	sched/headers: Prepare to remove spurious <linux/sched.h> inclusion dependencies	2017-03-02 08:42:41 +01:00
target	target: fix ALUA transition timeout handling	2017-03-18 14:47:28 -07:00
trace	There was some breakage with the changes for jump labels in the 4.11 merge	2017-03-07 09:37:28 -08:00
uapi	amd, intel, tilcdc, omap, and malidp fixes.	2017-03-17 11:19:52 -07:00
video	…
xen	Merge branch 'stable/for-linus-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb	2017-03-07 10:23:17 -08:00
Kbuild	…