Remove the C wrapper now a shell script wrapper exists. Move
perf_event_attr dumping functions to evsel.c and reduce the scope of
variables/defines. Use fprintf to avoid snprintf complexities in
WRITE_ASS.
Add __SANE_USERSPACE_TYPES__ to evsel.c to fix format flag issues on
PowerPC triggered by moving attr.c functions to evsel.c.
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: zhaimingbing <zhaimingbing@cmss.chinamobile.com>
Cc: Howard Chu <howardchu95@gmail.com>
Cc: Ze Gao <zegao2021@gmail.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Veronika Molnarova <vmolnaro@redhat.com>
Link: https://lore.kernel.org/r/20241015000158.871828-3-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
The "Setup struct perf_event_attr" test in attr.c does a bunch of
directory finding to set up running a python test that in general is
more brittle than similar logic we have in shell tests. Add a shell
test that invokes and runs the tests in the python attr.py script.
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: zhaimingbing <zhaimingbing@cmss.chinamobile.com>
Cc: Howard Chu <howardchu95@gmail.com>
Cc: Ze Gao <zegao2021@gmail.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Veronika Molnarova <vmolnaro@redhat.com>
Link: https://lore.kernel.org/r/20241015000158.871828-2-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
An issue can be observed when probe C++ demangled symbol with steps:
# nm test_cpp_mangle | grep print_data
0000000000000c94 t _GLOBAL__sub_I__Z10print_datai
0000000000000afc T _Z10print_datai
0000000000000b38 T _Z10print_dataR5Point
# perf probe -x /home/niayan01/test_cpp_mangle -F --demangle
...
print_data(Point&)
print_data(int)
...
# perf --debug verbose=3 probe -x test_cpp_mangle --add "test=print_data(int)"
probe-definition(0): test=print_data(int)
symbol:print_data(int) file:(null) line:0 offset:0 return:0 lazy:(null)
0 arguments
Open Debuginfo file: /home/niayan01/test_cpp_mangle
Try to find probe point from debuginfo.
Symbol print_data(int) address found : afc
Matched function: print_data [2ccf]
Probe point found: print_data+0
Found 1 probe_trace_events.
Opening /sys/kernel/tracing//uprobe_events write=1
Opening /sys/kernel/tracing//README write=0
Writing event: p:probe_test_cpp_mangle/test /home/niayan01/test_cpp_mangle:0xb38
...
When tried to probe symbol "print_data(int)", the log shows:
Symbol print_data(int) address found : afc
The found address is 0xafc - which is right with verifying the output
result from nm. Afterwards when write event, the command uses offset
0xb38 in the last log, which is a wrong address.
The dwarf_diename() gets a common function name, in above case, it
returns string "print_data". As a result, the tool parses the offset
based on the common name. This leads to probe at the wrong symbol
"print_data(Point&)".
To fix the issue, use the die_get_linkage_name() function to retrieve
the distinct linkage name - this is the mangled name for the C++ case.
Based on this unique name, the tool can get a correct offset for
probing. Based on DWARF doc, it is possible the linkage name is missed
in the DIE, it rolls back to use dwarf_diename().
After:
# perf --debug verbose=3 probe -x test_cpp_mangle --add "test=print_data(int)"
probe-definition(0): test=print_data(int)
symbol:print_data(int) file:(null) line:0 offset:0 return:0 lazy:(null)
0 arguments
Open Debuginfo file: /home/niayan01/test_cpp_mangle
Try to find probe point from debuginfo.
Symbol print_data(int) address found : afc
Matched function: print_data [2d06]
Probe point found: print_data+0
Found 1 probe_trace_events.
Opening /sys/kernel/tracing//uprobe_events write=1
Opening /sys/kernel/tracing//README write=0
Writing event: p:probe_test_cpp_mangle/test /home/niayan01/test_cpp_mangle:0xafc
Added new event:
probe_test_cpp_mangle:test (on print_data(int) in /home/niayan01/test_cpp_mangle)
You can now use it in all perf tools, such as:
perf record -e probe_test_cpp_mangle:test -aR sleep 1
# perf --debug verbose=3 probe -x test_cpp_mangle --add "test2=print_data(Point&)"
probe-definition(0): test2=print_data(Point&)
symbol:print_data(Point&) file:(null) line:0 offset:0 return:0 lazy:(null)
0 arguments
Open Debuginfo file: /home/niayan01/test_cpp_mangle
Try to find probe point from debuginfo.
Symbol print_data(Point&) address found : b38
Matched function: print_data [2ccf]
Probe point found: print_data+0
Found 1 probe_trace_events.
Opening /sys/kernel/tracing//uprobe_events write=1
Parsing probe_events: p:probe_test_cpp_mangle/test /home/niayan01/test_cpp_mangle:0x0000000000000afc
Group:probe_test_cpp_mangle Event:test probe:p
Opening /sys/kernel/tracing//README write=0
Writing event: p:probe_test_cpp_mangle/test2 /home/niayan01/test_cpp_mangle:0xb38
Added new event:
probe_test_cpp_mangle:test2 (on print_data(Point&) in /home/niayan01/test_cpp_mangle)
You can now use it in all perf tools, such as:
perf record -e probe_test_cpp_mangle:test2 -aR sleep 1
Fixes: fb1587d869a3 ("perf probe: List probes with line number and file name")
Signed-off-by: Leo Yan <leo.yan@arm.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20241012141432.877894-1-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
These modes don't use the threshold, so don't compute it saving time
and potentially reducing events.
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Will Deacon <will@kernel.org>
Cc: James Clark <james.clark@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20241017175356.783793-8-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Colors don't mean things in CSV and JSON output, switch to a threshold
enum value that the standard output can convert to a color. Updating
the CSV and JSON output will be later changes.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Will Deacon <will@kernel.org>
Cc: James Clark <james.clark@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20241017175356.783793-6-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Avoid cases like:
```
$ perf stat -a -M topdownl1 -j -I 1000
...
{"interval" : 11.127757275, "counter-value" : "85715898.000000", "unit" : "", "event" : "IDQ.MITE_UOPS", "event-runtime" : 988376123, "pcnt-running" : 100.00, "metric-value" : "0.000000", "metric-unit" : "(null)"}
...
```
If there is no unit then drop the metric-value too as:
Suggested-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Will Deacon <will@kernel.org>
Cc: James Clark <james.clark@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20241017175356.783793-5-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Return earlier for an empty unit case. If snprintf of the fmt doesn't
produce digits between vals and ends, as happens with NaN, make the
value "none" as happens in print_metric_end.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Will Deacon <will@kernel.org>
Cc: James Clark <james.clark@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20241017175356.783793-4-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
The print_metric parameter names were rearranged, fix and add comments
in the stat-shadow callers to ensure they are correct.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Will Deacon <will@kernel.org>
Cc: James Clark <james.clark@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20241017175356.783793-3-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Add printf format checking to vararg printf routines in
color.h. Resolve build errors/bugs that are found through this
checking.
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Will Deacon <will@kernel.org>
Cc: James Clark <james.clark@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20241017175356.783793-2-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Add missing dwarf_cfi_end to free memory associated with probe_finder
cfi_eh which is allocated and owned via a call to
dwarf_getcfi_elf. Confusingly cfi_dbg shouldn't be freed as its memory
is owned by the passed in debuginfo struct. Add comments to highlight
this.
This addresses leak sanitizer issues seen in:
tools/perf/tests/shell/test_uprobe_from_different_cu.sh
Fixes: 270bde1e76f4 ("perf probe: Search both .eh_frame and .debug_frame sections for probe location")
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Steinar H. Gunderson <sesse@google.com>
Cc: Alexander Lobakin <aleksander.lobakin@intel.com>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Link: https://lore.kernel.org/r/20241016235622.52166-3-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
The insn argument passed to cs_disasm needs freeing. To support
accurately having count, add an additional free_count variable.
Fixes: c5d60de1813a ("perf annotate: Add support to use libcapstone in powerpc")
Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Steinar H. Gunderson <sesse@google.com>
Cc: Alexander Lobakin <aleksander.lobakin@intel.com>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Link: https://lore.kernel.org/r/20241016235622.52166-2-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
perf list picks the events supported for specific platform
from pmu-events/arch/powerpc/<platform>. Example power10 events
are in pmu-events/arch/powerpc/power10, power9 events are part
of pmu-events/arch/powerpc/power9. The decision of which
platform to pick is determined based on PVR value in powerpc.
The PVR value is matched from pmu-events/arch/powerpc/mapfile.csv
Example:
Format:
PVR,Version,JSON/file/pathname,Type
0x004[bcd][[:xdigit:]]{4},1,power8,core
0x0066[[:xdigit:]]{4},1,power8,core
0x004e[[:xdigit:]]{4},1,power9,core
0x0080[[:xdigit:]]{4},1,power10,core
0x0082[[:xdigit:]]{4},1,power10,core
The code gets the PVR from system using get_cpuid_str function
in arch/powerpc/util/headers.c ( from SPRN_PVR ) and compares
with value from mapfile.csv
In case of compat mode, say when partition is booted in a power9
mode when the system is a power10, this picks incorrectly. Because
PVR will point to power10 where as it should pick events from power9
folder. To support generic events, add new folder
pmu-events/arch/powerpc/compat to contain the ISA architected events
which is supported in compat mode. Also return 0x00ffffff as pvr
when booted in compat mode. Based on this pvr value, json will
pick events from pmu-events/arch/powerpc/compat
Suggested-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Disha Goel<disgoel@linux.ibm.com>
Cc: akanksha@linux.ibm.com
Cc: hbathini@linux.ibm.com
Cc: kjain@linux.ibm.com
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20241010145107.51211-2-atrajeev@linux.vnet.ibm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
perf list picks the events supported for specific platform
from pmu-events/arch/powerpc/<platform>. Example power10 events
are in pmu-events/arch/powerpc/power10, power9 events are part
of pmu-events/arch/powerpc/power9. The decision of which
platform to pick is determined based on PVR value in powerpc.
The PVR value is matched from pmu-events/arch/powerpc/mapfile.csv
Example:
Format:
PVR,Version,JSON/file/pathname,Type
0x004[bcd][[:xdigit:]]{4},1,power8,core
0x0066[[:xdigit:]]{4},1,power8,core
0x004e[[:xdigit:]]{4},1,power9,core
0x0080[[:xdigit:]]{4},1,power10,core
0x0082[[:xdigit:]]{4},1,power10,core
The code gets the PVR from system using get_cpuid_str function
in arch/powerpc/util/headers.c ( from SPRN_PVR ) and compares
with value from mapfile.csv
In case of compat mode, say when partition is booted in a power9
mode when the system is a power10, add an entry to pick the
ISA architected events from "pmu-events/arch/powerpc/compat".
Add json file generic-events.json which will contain these
events which is supported in compat mode.
Suggested-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Disha Goel <disgoel@linux.ibm.com>
Cc: akanksha@linux.ibm.com
Cc: hbathini@linux.ibm.com
Cc: kjain@linux.ibm.com
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20241010145107.51211-1-atrajeev@linux.vnet.ibm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
During the rework of the dso structure in patch ee756ef7491eafd an
increment was forgotten for the symtab_type in case the data for
the kernel module are compressed. This affects the probing of the
kernel modules, which fails if the data are not already cached.
Increment the value of the symtab_type to its compressed variant so the
data could be recovered successfully.
Fixes: ee756ef7491eafd7 ("perf dso: Add reference count checking and accessor functions")
Signed-off-by: Veronika Molnarova <vmolnaro@redhat.com>
Acked-by: Michael Petlan <mpetlan@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Michael Petlan <mpetlan@redhat.com>
Link: https://lore.kernel.org/r/20241010144836.16424-1-vmolnaro@redhat.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
If a symbol name is longer than the maximum event length (64 bytes), the
perf tool reports error:
# perf probe -x test_cpp_mangle --add "this_is_a_very_very_long_print_data_abcdefghijklmnopqrstuvwxyz(int)"
snprintf() failed: -7; the event name nbase='this_is_a_very_very_long_print_data_abcdefghijklmnopqrstuvwxyz(int)' is too long
Error: Failed to add events.
An information is missed in the log that the symbol name and the event
name can be set separately. Especially, this is recommended for adding
probe for a long symbol.
This commit refines the log for reminding event syntax.
After:
# perf probe -x test_cpp_mangle --add "this_is_a_very_very_long_print_data_abcdefghijklmnopqrstuvwxyz(int)"
snprintf() failed: -7; the event name 'this_is_a_very_very_long_print_data_abcdefghijklmnopqrstuvwxyz(int)' is too long
Hint: Set a shorter event with syntax "EVENT=PROBEDEF"
EVENT: Event name (max length: 64 bytes).
Error: Failed to add events.
Signed-off-by: Leo Yan <leo.yan@arm.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20241012204725.928794-4-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
In the kernel, the probe group string length is limited up to
MAX_EVENT_NAME_LEN (including the NULL terminator).
Check for this limitation and report an error if it is exceeded.
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Link: https://lore.kernel.org/r/20241012204725.928794-3-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
The MAX_EVENT_NAME_LEN macro has been defined in the kernel. Use the
same definition in the tool for more readable.
Signed-off-by: Leo Yan <leo.yan@arm.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Link: https://lore.kernel.org/r/20241012204725.928794-2-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
On my system, perf list is very slow to print the whole events. I think
there's a performance issue in SDT and uprobes event listing. I noticed
this issue while running perf test on x86 but it takes long to check
some CoreSight event which should be skipped quickly.
Anyway, some test uses perf list to check whether the required event is
available before running the test. The perf list command can take an
argument to specify event class or (glob) pattern. But glob pattern is
only to suppress output for unmatched ones after checking all events.
In this case, specifying event class is better to reduce the number of
events it checks and to avoid buggy subsystems entirely.
No functional changes intended.
Reviewed-by: James Clark <james.clark@linaro.org>
Reviewed-by: Ian Rogers <irogers@google.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Carsten Haitzler <carsten.haitzler@arm.com>
Cc: Leo Yan <leo.yan@arm.com>
Link: https://lore.kernel.org/r/20241016065654.269994-1-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Leverage the existed function perf_pmu__name_from_config() to check if
an event is topdown metrics event. perf_pmu__name_from_config() goes
through the defined formats and figures out the config of pre-defined
topdown events.
This avoids to figure out the config of topdown pre-defined events with
hard-coded format strings "event=" and "umask=" and provides more
flexibility.
Suggested-by: Ian Rogers <irogers@google.com>
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20241011110207.1032235-2-dapeng1.mi@linux.intel.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
The commit "3b5edc0421e2 (perf x86/topdown: Don't move topdown metric
events in group)" modifies topdown metrics comparator to move topdown
metrics events which are not in same group with previous event. But it
just modifies the 2nd comparator and causes the comparators become
asymmetric.
Thus modify the 1st topdown metrics comparator and make the two
comparators be symmetric, and refine the comments as well.
Suggested-by: Ian Rogers <irogers@google.com>
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20241011110207.1032235-1-dapeng1.mi@linux.intel.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Add Cortex-A720, Cortex-A725, Cortex-X1C, Cortex-X3 and Cortex-X925 into
the common data source encoding list. For everyone of these CPUs, it
technical reference manual defines the data source packet as the common
encoding format.
Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20241003185322.192357-8-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Add Neoverse-V2 MIDR to the common data source encoding range list.
Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com>
Reviewed-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20241003185322.192357-7-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
The 'midr' field is replaced by the MIDR values stored in metadata (per
CPU wise). Remove the 'midr' field as it is no longer used.
Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20241003185322.192357-6-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Use the info in the metadata to decide if the data source feature is
supported. The CPU MIDR must be in the CPU list for the common data
source encoding.
For the metadata version 1, it doesn't include info for MIDR. In this
case, due to absent info for making decision, print out warning to
remind users to upgrade tool and returns false.
Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20241003185322.192357-5-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Introduce the arm_spe__is_homogeneous() function, it uses to check if
Arm SPE is homogeneous cross all CPUs.
Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20241003185322.192357-4-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
The Neoverse CPUs follow the common data source encoding, and other
CPU variants can share the same format.
Rename the CPU list and data source definitions as common data source
names. This change prepares for appending more CPU variants.
Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20241003185322.192357-3-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
The arm_spe__synth_data_source_generic() function is invoked when the
tool detects that CPUs do not support data source packets and falls back
to synthesizing only the memory level.
Rename it to arm_spe__synth_memory_level() for better reflecting its
purpose.
Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20241003185322.192357-2-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
As Ian Rogers <irogers@google.com> pointed out, intel-cqm.c is neither
used nor built. It was deleted in the following commit:
commit b24413180f56 ("License cleanup: add SPDX GPL-2.0 license identifier to files with no license")
However, it resurfaced soon after in the following commit:
commit 5c9295bfe6f5 ("perf tests: Remove Intel CQM perf test")
It should be deleted once and for all.
Suggested-by: Ian Rogers <irogers@google.com>
Signed-off-by: Howard Chu <howardchu95@gmail.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Reviewed-by: Matt Fleming <mfleming@cloudflare.com>
Link: https://lore.kernel.org/r/20241011055700.4142694-1-howardchu95@gmail.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
It should not clear the inherit bit simply because the kernel doesn't
support the sample read with it. IOW the inherit bit should be kept
when the sample read is not requested for the event.
Fixes: 90035d3cd876cb71 ("tools/perf: Allow inherit + PERF_SAMPLE_READ when opening events")
Acked-by: Ben Gainey <ben.gainey@arm.com>
Link: https://lore.kernel.org/r/20241009062250.730192-1-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
pre-migration wait time is the time that a task unnecessarily spends
on the runqueue of a CPU but doesn't get switched-in there. In terms
of tracepoints, it is the time between sched:sched_wakeup and
sched:sched_migrate_task.
Let's say a task woke up on CPU2, then it got migrated to CPU4 and
then it's switched-in to CPU4. So, here pre-migration wait time is
time that it was waiting on runqueue of CPU2 after it is woken up.
The general pattern for pre-migration to occur is:
sched:sched_wakeup
sched:sched_migrate_task
sched:sched_switch
The sched:sched_waking event is used to capture the wakeup time,
as it aligns with the existing code and only introduces a negligible
time difference.
pre-migrations are generally not useful and it increases migrations.
This metric would be helpful in testing patches mainly related to wakeup
and load-balancer code paths as better wakeup logic would choose an
optimal CPU where task would be switched-in and thereby reducing pre-
migrations.
The sample output(s) when -P or --pre-migrations is used:
=================
time cpu task name wait time sch delay run time pre-mig time
[tid/pid] (msec) (msec) (msec) (msec)
--------------- ------ ------------------------------ --------- --------- --------- ---------
38456.720806 [0001] schbench[28634/28574] 4.917 4.768 1.004 0.000
38456.720810 [0001] rcu_preempt[18] 3.919 0.003 0.004 0.000
38456.721800 [0006] schbench[28779/28574] 23.465 23.465 1.999 0.000
38456.722800 [0002] schbench[28773/28574] 60.371 60.237 3.955 60.197
38456.722806 [0001] schbench[28634/28574] 0.004 0.004 1.996 0.000
38456.722811 [0001] rcu_preempt[18] 1.996 0.005 0.005 0.000
38456.723800 [0000] schbench[28833/28574] 4.000 4.000 3.999 0.000
38456.723800 [0004] schbench[28762/28574] 42.951 42.839 3.999 39.867
38456.723802 [0007] schbench[28812/28574] 43.947 43.817 3.999 40.866
38456.723804 [0001] schbench[28587/28574] 7.935 7.822 0.993 0.000
Signed-off-by: Madadi Vineeth Reddy <vineethr@linux.ibm.com>
Reviewed-by: Tim Chen <tim.c.chen@linux.intel.com>
Link: https://lore.kernel.org/r/20241004170756.18064-1-vineethr@linux.ibm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
The hashmap__for_each_entry[_safe] is accessing 'map' as if it's a
pointer. But it does without parentheses so passing a static hash map
with an ampersand (like &slab_hash below) caused compiler warnings due
to unmatched types.
In file included from util/bpf_lock_contention.c:5:
util/bpf_lock_contention.c: In function ‘exit_slab_cache_iter’:
linux/tools/perf/util/hashmap.h:169:32: error: invalid type argument of ‘->’ (have ‘struct hashmap’)
169 | for (bkt = 0; bkt < map->cap; bkt++) \
| ^~
util/bpf_lock_contention.c:105:9: note: in expansion of macro ‘hashmap__for_each_entry’
105 | hashmap__for_each_entry(&slab_hash, cur, bkt)
| ^~~~~~~~~~~~~~~~~~~~~~~
/home/namhyung/project/linux/tools/perf/util/hashmap.h:170:31: error: invalid type argument of ‘->’ (have ‘struct hashmap’)
170 | for (cur = map->buckets[bkt]; cur; cur = cur->next)
| ^~
util/bpf_lock_contention.c:105:9: note: in expansion of macro ‘hashmap__for_each_entry’
105 | hashmap__for_each_entry(&slab_hash, cur, bkt)
| ^~~~~~~~~~~~~~~~~~~~~~~
Cc: bpf@vger.kernel.org
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20241009202009.884884-1-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Merge tag 'v6.12-rc3' into perf-tools-next
To get the fixes in the current perf-tools tree.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
util/tool_pmu.c: In function 'evsel__tool_pmu_read':
util/tool_pmu.c:419:55: error: passing argument 2 of 'tool_pmu__read_event' from incompatible pointer type [-Werror=incompatible-pointer-types]
419 | if (!tool_pmu__read_event(ev, &val)) {
| ^~~~
| |
| long unsigned int *
util/tool_pmu.c:335:56: note: expected 'u64 *' {aka 'long long unsigned int *'} but argument is of type 'long unsigned int *'
335 | bool tool_pmu__read_event(enum tool_pmu_event ev, u64 *result)
| ~~~~~^~~~~~
Link: https://lore.kernel.org/r/Zw1XIGML32VaxE0t@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
The testcase for tool_pmu failed in powerpc as below:
./perf test -v "Parsing without PMU name"
8: Tool PMU :
8.1: Parsing without PMU name : FAILED!
This happens when parse_events results in either skip or fail
of an event. Because the code invokes evlist__delete(evlist)
and "goto out".
ret = parse_events(evlist, str, &err);
if (ret) {
evlist__delete(evlist);
But in the "out" section also evlist__delete happens.
out:
evlist__delete(evlist);
return ret;
Hence remove the duplicate evlist__delete from the first path
in the testcase
With the change:
# ./perf test -v "Parsing without PMU name"
8: Tool PMU :
8.1: Parsing without PMU name : Ok
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: akanksha@linux.ibm.com
Cc: hbathini@linux.ibm.com
Cc: kjain@linux.ibm.com
Cc: maddy@linux.ibm.com
Cc: disgoel@linux.vnet.ibm.com
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20241013170732.71339-1-atrajeev@linux.vnet.ibm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
perf fails to compile on systems with GCC version11
as below:
In file included from /usr/include/string.h:519,
from /home/athir/perf-tools-next/tools/include/linux/bitmap.h:5,
from /home/athir/perf-tools-next/tools/perf/util/pmu.h:5,
from /home/athir/perf-tools-next/tools/perf/util/evsel.h:14,
from /home/athir/perf-tools-next/tools/perf/util/evlist.h:14,
from tests/tool_pmu.c:3:
In function ‘strncpy’,
inlined from ‘do_test’ at tests/tool_pmu.c:25:3:
/usr/include/bits/string_fortified.h:95:10: error: ‘__builtin_strncpy’ specified bound 128 equals destination size [-Werror=stringop-truncation]
95 | return __builtin___strncpy_chk (__dest, __src, __len,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
96 | __glibc_objsize (__dest));
| ~~~~~~~~~~~~~~~~~~~~~~~~~
The compile error is from strncpy refernce in do_test:
strncpy(str, tool_pmu__event_to_str(ev), sizeof(str));
This behaviour is not observed with GCC version 8, but observed
with GCC version 11 . This is message from gcc for detecting
truncation while using strncpu. Use snprintf instead of strncpy
here to be safe.
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: akanksha@linux.ibm.com
Cc: hbathini@linux.ibm.com
Cc: kjain@linux.ibm.com
Cc: maddy@linux.ibm.com
Cc: disgoel@linux.vnet.ibm.com
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20241013173742.71882-1-atrajeev@linux.vnet.ibm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Merge tag '6.12-rc2-cifs-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
"Two fixes for Windows symlink handling"
* tag '6.12-rc2-cifs-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: Fix creating native symlinks pointing to current or parent directory
cifs: Improve creating native symlinks pointing to directory
Here are some small USB fixes for some reported problems for 6.12-rc3.
Include in here is:
- fix for yurex driver that was caused in -rc1
- build error fix for usbg network filesystem code
- onboard_usb_dev build fix
- dwc3 driver fixes for reported errors
- gadget driver fix
- new USB storage driver quirk
- xhci resume bugfix
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some small USB fixes for some reported problems for 6.12-rc3.
Include in here is:
- fix for yurex driver that was caused in -rc1
- build error fix for usbg network filesystem code
- onboard_usb_dev build fix
- dwc3 driver fixes for reported errors
- gadget driver fix
- new USB storage driver quirk
- xhci resume bugfix
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
net/9p/usbg: Fix build error
USB: yurex: kill needless initialization in yurex_read
Revert "usb: yurex: Replace snprintf() with the safer scnprintf() variant"
usb: xhci: Fix problem with xhci resume from suspend
usb: misc: onboard_usb_dev: introduce new config symbol for usb5744 SMBus support
usb: dwc3: core: Stop processing of pending events if controller is halted
usb: dwc3: re-enable runtime PM after failed resume
usb: storage: ignore bogus device raised by JieLi BR21 USB sound chip
usb: gadget: core: force synchronous registration
Here is a single driver core fix, and a .mailmap update, for 6.12-rc3.
The fix is for the rust driver core bindings, turned out that the
from_raw binding wasn't a good idea (don't want to pass a pointer to a
reference counted object without actually incrementing the pointer.) So
this change fixes it up as the from_raw binding came in in -rc1.
The other change is a .mailmap update.
Both have been in linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here is a single driver core fix, and a .mailmap update.
The fix is for the rust driver core bindings, turned out that the
from_raw binding wasn't a good idea (don't want to pass a pointer to a
reference counted object without actually incrementing the pointer.)
So this change fixes it up as the from_raw binding came in in -rc1.
The other change is a .mailmap update.
Both have been in linux-next for a while with no reported issues"
* tag 'driver-core-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
mailmap: update mail for Fiona Behrens
rust: device: change the from_raw() function
- Fix crash in memcpy on 8xx due to dcbz workaround since recent changes.
Thanks to: Christophe Leroy.
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Merge tag 'powerpc-6.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
- Fix crash in memcpy on 8xx due to dcbz workaround since recent
changes
Thanks to Christophe Leroy.
* tag 'powerpc-6.12-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/8xx: Fix kernel DTLB miss on dcbz
four small fixes, three in drivers and one in the FC transport class
to add idempotence to state setting.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Four small fixes, three in drivers and one in the FC transport class
to add idempotence to state setting"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: scsi_transport_fc: Allow setting rport state to current state
scsi: wd33c93: Don't use stale scsi_pointer value
scsi: fnic: Move flush_work initialization out of if block
scsi: ufs: Use pre-calculated offsets in ufshcd_init_lrb()
- Add missing dependencies on REGMAP_I2C for several drivers
- Fix memory leak in adt7475 driver
- Relabel Columbiaville temperature sensor in intel-m10-bmc-hwmon driver
to match other sensor labels
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Merge tag 'hwmon-for-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- Add missing dependencies on REGMAP_I2C for several drivers
- Fix memory leak in adt7475 driver
- Relabel Columbiaville temperature sensor in intel-m10-bmc-hwmon
driver to match other sensor labels
* tag 'hwmon-for-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (max1668) Add missing dependency on REGMAP_I2C
hwmon: (ltc2991) Add missing dependency on REGMAP_I2C
hwmon: (adt7470) Add missing dependency on REGMAP_I2C
hwmon: (adm9240) Add missing dependency on REGMAP_I2C
hwmon: (mc34vr500) Add missing dependency on REGMAP_I2C
hwmon: (tmp513) Add missing dependency on REGMAP_I2C
hwmon: (adt7475) Fix memory leak in adt7475_fan_pwm_config()
hwmon: intel-m10-bmc-hwmon: relabel Columbiaville to CVL Die Temperature
This kselftest update for Linux 6.12-rc3 consists of several fixes
for build, run-time errors, and reporting errors:
-- ftrace: regression test for a kernel crash when running function graph
tracing and then enabling function profiler.
-- rseq: fix for mm_cid test failure.
-- vDSO:
- fixes to reporting skip and other error conditions.
- changes unconditionally build chacha and getrandom tests on
all architectures to make it easier for them to run in CIs.
- build error when sched.h to bring in CLONE_NEWTIME define.
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Merge tag 'linux_kselftest-fixes-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fixes from Shuah Khan:
"Fixes for build, run-time errors, and reporting errors:
- ftrace: regression test for a kernel crash when running function
graph tracing and then enabling function profiler.
- rseq: fix for mm_cid test failure.
- vDSO:
- fixes to reporting skip and other error conditions
- changes unconditionally build chacha and getrandom tests on all
architectures to make it easier for them to run in CIs
- build error when sched.h to bring in CLONE_NEWTIME define"
* tag 'linux_kselftest-fixes-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
ftrace/selftest: Test combination of function_graph tracer and function profiler
selftests/rseq: Fix mm_cid test failure
selftests: vDSO: Explicitly include sched.h
selftests: vDSO: improve getrandom and chacha error messages
selftests: vDSO: unconditionally build getrandom test
selftests: vDSO: unconditionally build chacha test
- Disable kunit tests for arm64+ACPI
- Fix refcount issue in kunit tests
- Drop constraints on non-conformant 'interrupt-map' in fsl,ls-extirq
- Drop type ref on 'msi-parent in fsl,qoriq-mc binding
- Move elgin,jg10309-01 to its own binding from trivial-devices
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Merge tag 'devicetree-fixes-for-6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Disable kunit tests for arm64+ACPI
- Fix refcount issue in kunit tests
- Drop constraints on non-conformant 'interrupt-map' in fsl,ls-extirq
- Drop type ref on 'msi-parent in fsl,qoriq-mc binding
- Move elgin,jg10309-01 to its own binding from trivial-devices
* tag 'devicetree-fixes-for-6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of: Skip kunit tests when arm64+ACPI doesn't populate root node
of: Fix unbalanced of node refcount and memory leaks
dt-bindings: interrupt-controller: fsl,ls-extirq: workaround wrong interrupt-map number
dt-bindings: misc: fsl,qoriq-mc: remove ref for msi-parent
dt-bindings: display: elgin,jg10309-01: Add own binding
- switch fbdev drivers back to struct platform_driver::remove()
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Merge tag 'fbdev-for-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev platform driver fix from Helge Deller:
"Switch fbdev drivers back to struct platform_driver::remove()
Now that 'remove()' has been converted to the sane new API, there's
no reason for the 'remove_new()' use, so this converts back to the
traditional and simpler name.
See commits
5c5a7680e67b ("platform: Provide a remove callback that returns no value")
0edb555a65d1 ("platform: Make platform_driver::remove() return void")
for background to this all"
* tag 'fbdev-for-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
fbdev: Switch back to struct platform_driver::remove()
- fix clock handle leak in probe() error path in gpio-aspeed
- add a dummy register read to ensure the write actually completed
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Merge tag 'gpio-fixes-for-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix clock handle leak in probe() error path in gpio-aspeed
- add a dummy register read to ensure the write actually completed
* tag 'gpio-fixes-for-v6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: aspeed: Use devm_clk api to manage clock source
gpio: aspeed: Add the flush write to ensure the write complete.
Localio Bugfixes:
* Remove duplicated include in localio.c
* Fix race in NFS calls to nfsd_file_put_local() and nfsd_serv_put()
* Fix Kconfig for NFS_COMMON_LOCALIO_SUPPORT
* Fix nfsd_file tracepoints to handle NULL rqstp pointers
Other Bugfixes:
* Fix program selection loop in svc_process_common
* Fix integer overflow in decode_rc_list()
* Prevent NULL-pointer dereference in nfs42_complete_copies()
* Fix CB_RECALL performance issues when using a large number of delegations
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Merge tag 'nfs-for-6.12-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client fixes from Anna Schumaker:
"Localio Bugfixes:
- remove duplicated include in localio.c
- fix race in NFS calls to nfsd_file_put_local() and nfsd_serv_put()
- fix Kconfig for NFS_COMMON_LOCALIO_SUPPORT
- fix nfsd_file tracepoints to handle NULL rqstp pointers
Other Bugfixes:
- fix program selection loop in svc_process_common
- fix integer overflow in decode_rc_list()
- prevent NULL-pointer dereference in nfs42_complete_copies()
- fix CB_RECALL performance issues when using a large number of
delegations"
* tag 'nfs-for-6.12-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
NFS: remove revoked delegation from server's delegation list
nfsd/localio: fix nfsd_file tracepoints to handle NULL rqstp
nfs_common: fix Kconfig for NFS_COMMON_LOCALIO_SUPPORT
nfs_common: fix race in NFS calls to nfsd_file_put_local() and nfsd_serv_put()
NFSv4: Prevent NULL-pointer dereference in nfs42_complete_copies()
SUNRPC: Fix integer overflow in decode_rc_list()
sunrpc: fix prog selection loop in svc_process_common
nfs: Remove duplicated include in localio.c
