Leo Yan d6c9c05fe1 perf cs-etm: Correct CPU mode for samples ... Since commit edeb0c90df ("perf tools: Stop fallbacking to kallsyms for vdso symbols lookup"), the kernel address cannot be properly parsed to kernel symbol with command 'perf script -k vmlinux'. The reason is CoreSight samples is always to set CPU mode as PERF_RECORD_MISC_USER, thus it fails to find corresponding map/dso in below flows: process_sample_event() `-> machine__resolve() `-> thread__find_map(thread, sample->cpumode, sample->ip, al); In this flow it needs to pass argument 'sample->cpumode' to tell what's the CPU mode, before it always passed PERF_RECORD_MISC_USER but without any failure until the commit edeb0c90df ("perf tools: Stop fallbacking to kallsyms for vdso symbols lookup") has been merged. The reason is even with the wrong CPU mode the function thread__find_map() firstly fails to find map but it will rollback to find kernel map for vdso symbols lookup. In the latest code it has removed the fallback code, thus if CPU mode is PERF_RECORD_MISC_USER then it cannot find map anymore with kernel address. This patch is to correct samples CPU mode setting, it creates a new helper function cs_etm__cpu_mode() to tell what's the CPU mode based on the address with the info from machine structure; this patch has a bit extension to check not only kernel and user mode, but also check for host/guest and hypervisor mode. Finally this patch uses the function in instruction and branch samples and also apply in cs_etm__mem_access() for a minor polishing. Signed-off-by: Leo Yan <leo.yan@linaro.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: stable@kernel.org # v4.19 Link: http://lkml.kernel.org/r/1540883908-17018-1-git-send-email-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2018-10-31 09:57:50 -03:00
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accounting	delayacct: track delays from thrashing cache pages	2018-10-26 16:26:32 -07:00
arch	KVM updates for v4.20	2018-10-25 17:57:35 -07:00
bpf	tools: bpftool: fix completion for "bpftool map update"	2018-10-21 20:45:14 +02:00
build
cgroup
crypto	crypto: tools - Add cryptostat userspace	2018-09-28 12:46:26 +08:00
firewire
gpio
hv	tools: hv: fcopy: set 'error' in case an unknown operation was requested	2018-09-30 08:49:55 -07:00
iio
include	tools include uapi: Grab a copy of linux/fs.h	2018-10-30 11:46:22 -03:00
kvm/kvm_stat	tools/kvm_stat: cut down decimal places in update interval dialog	2018-10-01 15:40:59 +02:00
laptop
leds
lib	Merge branch 'linus' into perf/urgent, to pick up fixes	2018-10-29 07:20:52 +01:00
memory-model	tools/memory-model: Add more LKMM limitations	2018-10-02 10:28:04 +02:00
nfsd
objtool	x86/jump_table: Use relative references	2018-09-27 17:56:48 +02:00
pci	tools: PCI: Change pcitest compiling process	2018-10-03 11:19:52 +01:00
pcmcia
perf	perf cs-etm: Correct CPU mode for samples	2018-10-31 09:57:50 -03:00
power	Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-10-23 16:16:40 +01:00
scripts
spi	spi: spidev_test: Improve decoded text part of hex dump	2018-09-04 17:00:37 +01:00
testing	Merge branch 'akpm' (patches from Andrew)	2018-10-26 19:33:41 -07:00
thermal/tmon
time
usb	usbip: tools: fix atoi() on non-null terminated string	2018-10-18 19:44:39 +02:00
virtio
vm	tools/vm/page-types.c: fix "defined but not used" warning	2018-09-04 16:45:02 -07:00
wmi
Makefile	tools: PCI: Change pcitest compiling process	2018-10-03 11:19:52 +01:00