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2018-07-24perf tests: Fix record+probe_libc_inet_pton.sh when event existsSandipan Das
If the event 'probe_libc:inet_pton' already exists, this test fails and deletes the existing event before exiting. This will then pass for any subsequent executions. Instead of skipping to deleting the existing event because of failing to add a new event, a duplicate event is now created and the script continues with the usual checks. Only the new duplicate event that is created at the beginning of the test is deleted as a part of the cleanups in the end. All existing events remain as it is. This can be observed on a powerpc64 system running Fedora 27 as shown below. # perf probe -x /usr/lib64/power8/libc-2.26.so -a inet_pton Added new event: probe_libc:inet_pton (on inet_pton in /usr/lib64/power8/libc-2.26.so) Before: # perf test -v "probe libc's inet_pton & backtrace it with ping" 62: probe libc's inet_pton & backtrace it with ping : --- start --- test child forked, pid 21302 test child finished with -1 ---- end ---- probe libc's inet_pton & backtrace it with ping: FAILED! # perf probe --list After: # perf test -v "probe libc's inet_pton & backtrace it with ping" 62: probe libc's inet_pton & backtrace it with ping : --- start --- test child forked, pid 21490 ping 21513 [035] 39357.565561: probe_libc:inet_pton_1: (7fffa4c623b0) 7fffa4c623b0 __GI___inet_pton+0x0 (/usr/lib64/power8/libc-2.26.so) 7fffa4c190dc gaih_inet.constprop.7+0xf4c (/usr/lib64/power8/libc-2.26.so) 7fffa4c19c4c getaddrinfo+0x15c (/usr/lib64/power8/libc-2.26.so) 111d93c20 main+0x3e0 (/usr/bin/ping) test child finished with 0 ---- end ---- probe libc's inet_pton & backtrace it with ping: Ok # perf probe --list probe_libc:inet_pton (on __inet_pton@resolv/inet_pton.c in /usr/lib64/power8/libc-2.26.so) Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/e11fecff96e6cf4c65cdbd9012463513d7b8356c.1530724939.git.sandipan@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf tests: Fix record+probe_libc_inet_pton.sh to ensure cleanupsSandipan Das
If there is a mismatch in the perf script output, this test fails and exits before the event and temporary files created during its execution are cleaned up. This can be observed on a powerpc64 system running Fedora 27 as shown below. # perf test -v "probe libc's inet_pton & backtrace it with ping" 62: probe libc's inet_pton & backtrace it with ping : --- start --- test child forked, pid 18655 ping 18674 [013] 24511.496995: probe_libc:inet_pton: (7fffa6b423b0) 7fffa6b423b0 __GI___inet_pton+0x0 (/usr/lib64/power8/libc-2.26.so) 7fffa6af90dc gaih_inet.constprop.7+0xf4c (/usr/lib64/power8/libc-2.26.so) FAIL: expected backtrace entry "getaddrinfo\+0x[[:xdigit:]]+[[:space:]]\(/usr/lib64/power8/libc-2.26.so\)$" got "7fffa6af90dc gaih_inet.constprop.7+0xf4c (/usr/lib64/power8/libc-2.26.so)" test child finished with -1 ---- end ---- probe libc's inet_pton & backtrace it with ping: FAILED! # ls /tmp/expected.* /tmp/perf.data.* /tmp/perf.script.* /tmp/expected.u31 /tmp/perf.data.Pki /tmp/perf.script.Bhs # perf probe --list probe_libc:inet_pton (on __inet_pton@resolv/inet_pton.c in /usr/lib64/power8/libc-2.26.so) Cleanup of the event and the temporary files are now ensured by allowing the cleanup code to be executed even if the lines from the backtrace do not match their expected patterns instead of simply exiting from the point of failure. Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/ce9fb091dd3028fba8749a1a267cfbcb264bbfb1.1530724939.git.sandipan@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf tests: Fix record+probe_libc_inet_pton.sh for powerpc64Sandipan Das
For powerpc64, this test currently fails due to a mismatch in the expected output. This can be observed on a powerpc64le system running Fedora 27 as shown below. # perf test -v "probe libc's inet_pton & backtrace it with ping" Before: 62: probe libc's inet_pton & backtrace it with ping : --- start --- test child forked, pid 23948 ping 23965 [003] 71136.075084: probe_libc:inet_pton: (7fff996aaf28) 7fff996aaf28 __GI___inet_pton+0x8 (/usr/lib64/libc-2.26.so) 7fff9965fa54 gaih_inet.constprop.7+0xf44 (/usr/lib64/libc-2.26.so) FAIL: expected backtrace entry 2 "getaddrinfo\+0x[[:xdigit:]]+[[:space:]]\(/usr/lib64/libc-2.26.so\)$" got "7fff9965fa54 gaih_inet.constprop.7+0xf44 (/usr/lib64/libc-2.26.so)" test child finished with -1 ---- end ---- probe libc's inet_pton & backtrace it with ping: FAILED! After: 62: probe libc's inet_pton & backtrace it with ping : --- start --- test child forked, pid 24638 ping 24655 [001] 71208.525396: probe_libc:inet_pton: (7fffa245af28) 7fffa245af28 __GI___inet_pton+0x8 (/usr/lib64/libc-2.26.so) 7fffa240fa54 gaih_inet.constprop.7+0xf44 (/usr/lib64/libc-2.26.so) 7fffa24105b4 getaddrinfo+0x164 (/usr/lib64/libc-2.26.so) 138d52d70 main+0x3e0 (/usr/bin/ping) test child finished with 0 ---- end ---- probe libc's inet_pton & backtrace it with ping: Ok Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Maynard Johnson <maynard@us.ibm.com> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Fixes: e07d585e2454 ("perf tests: Switch trace+probe_libc_inet_pton to use record") Link: http://lkml.kernel.org/r/49621ec5f37109f0655e5a8c32287ad68d85a1e5.1530724939.git.sandipan@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf powerpc: Fix callchain ip filtering when return address is in a registerSandipan Das
For powerpc64, perf will filter out the second entry in the callchain, i.e. the LR value, if the return address of the function corresponding to the probed location has already been saved on its caller's stack. The state of the return address is determined using debug information. At any point within a function, if the return address is already saved somewhere, a DWARF expression can tell us about its location. If the return address in still in LR only, no DWARF expression would exist. Typically, the instructions in a function's prologue first copy the LR value to R0 and then pushes R0 on to the stack. If LR has already been copied to R0 but R0 is yet to be pushed to the stack, we can still get a DWARF expression that says that the return address is in R0. This is indicating that getting a DWARF expression for the return address does not guarantee the fact that it has already been saved on the stack. This can be observed on a powerpc64le system running Fedora 27 as shown below. # objdump -d /usr/lib64/libc-2.26.so | less ... 000000000015af20 <inet_pton>: 15af20: 0b 00 4c 3c addis r2,r12,11 15af24: e0 c1 42 38 addi r2,r2,-15904 15af28: a6 02 08 7c mflr r0 15af2c: f0 ff c1 fb std r30,-16(r1) 15af30: f8 ff e1 fb std r31,-8(r1) 15af34: 78 1b 7f 7c mr r31,r3 15af38: 78 23 83 7c mr r3,r4 15af3c: 78 2b be 7c mr r30,r5 15af40: 10 00 01 f8 std r0,16(r1) 15af44: c1 ff 21 f8 stdu r1,-64(r1) 15af48: 28 00 81 f8 std r4,40(r1) ... # readelf --debug-dump=frames-interp /usr/lib64/libc-2.26.so | less ... 00027024 0000000000000024 00027028 FDE cie=00000000 pc=000000000015af20..000000000015af88 LOC CFA r30 r31 ra 000000000015af20 r1+0 u u u 000000000015af34 r1+0 c-16 c-8 r0 000000000015af48 r1+64 c-16 c-8 c+16 000000000015af5c r1+0 c-16 c-8 c+16 000000000015af78 r1+0 u u ... # perf probe -x /usr/lib64/libc-2.26.so -a inet_pton+0x18 # perf record -e probe_libc:inet_pton -g ping -6 -c 1 ::1 # perf script Before: ping 2829 [005] 512917.460174: probe_libc:inet_pton: (7fff7e2baf38) 7fff7e2baf38 __GI___inet_pton+0x18 (/usr/lib64/libc-2.26.so) 7fff7e2705b4 getaddrinfo+0x164 (/usr/lib64/libc-2.26.so) 12f152d70 _init+0xbfc (/usr/bin/ping) 7fff7e1836a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so) 7fff7e183898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so) 0 [unknown] ([unknown]) After: ping 2829 [005] 512917.460174: probe_libc:inet_pton: (7fff7e2baf38) 7fff7e2baf38 __GI___inet_pton+0x18 (/usr/lib64/libc-2.26.so) 7fff7e26fa54 gaih_inet.constprop.7+0xf44 (/usr/lib64/libc-2.26.so) 7fff7e2705b4 getaddrinfo+0x164 (/usr/lib64/libc-2.26.so) 12f152d70 _init+0xbfc (/usr/bin/ping) 7fff7e1836a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so) 7fff7e183898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so) 0 [unknown] ([unknown]) Reported-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Maynard Johnson <maynard@us.ibm.com> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/66e848a7bdf2d43b39210a705ff6d828a0865661.1530724939.git.sandipan@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf powerpc: Fix callchain ip filteringSandipan Das
For powerpc64, redundant entries in the callchain are filtered out by determining the state of the return address and the stack frame using DWARF debug information. For making these filtering decisions we must analyze the debug information for the location corresponding to the program counter value, i.e. the first entry in the callchain, and not the LR value; otherwise, perf may filter out either the second or the third entry in the callchain incorrectly. This can be observed on a powerpc64le system running Fedora 27 as shown below. Case 1 - Attaching a probe at inet_pton+0x8 (binary offset 0x15af28). Return address is still in LR and a new stack frame is not yet allocated. The LR value, i.e. the second entry, should not be filtered out. # objdump -d /usr/lib64/libc-2.26.so | less ... 000000000010eb10 <gaih_inet.constprop.7>: ... 10fa48: 78 bb e4 7e mr r4,r23 10fa4c: 0a 00 60 38 li r3,10 10fa50: d9 b4 04 48 bl 15af28 <inet_pton+0x8> 10fa54: 00 00 00 60 nop 10fa58: ac f4 ff 4b b 10ef04 <gaih_inet.constprop.7+0x3f4> ... 0000000000110450 <getaddrinfo>: ... 1105a8: 54 00 ff 38 addi r7,r31,84 1105ac: 58 00 df 38 addi r6,r31,88 1105b0: 69 e5 ff 4b bl 10eb18 <gaih_inet.constprop.7+0x8> 1105b4: 78 1b 71 7c mr r17,r3 1105b8: 50 01 7f e8 ld r3,336(r31) ... 000000000015af20 <inet_pton>: 15af20: 0b 00 4c 3c addis r2,r12,11 15af24: e0 c1 42 38 addi r2,r2,-15904 15af28: a6 02 08 7c mflr r0 15af2c: f0 ff c1 fb std r30,-16(r1) 15af30: f8 ff e1 fb std r31,-8(r1) ... # perf probe -x /usr/lib64/libc-2.26.so -a inet_pton+0x8 # perf record -e probe_libc:inet_pton -g ping -6 -c 1 ::1 # perf script Before: ping 4507 [002] 514985.546540: probe_libc:inet_pton: (7fffa7dbaf28) 7fffa7dbaf28 __GI___inet_pton+0x8 (/usr/lib64/libc-2.26.so) 7fffa7d705b4 getaddrinfo+0x164 (/usr/lib64/libc-2.26.so) 13fb52d70 _init+0xbfc (/usr/bin/ping) 7fffa7c836a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so) 7fffa7c83898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so) 0 [unknown] ([unknown]) After: ping 4507 [002] 514985.546540: probe_libc:inet_pton: (7fffa7dbaf28) 7fffa7dbaf28 __GI___inet_pton+0x8 (/usr/lib64/libc-2.26.so) 7fffa7d6fa54 gaih_inet.constprop.7+0xf44 (/usr/lib64/libc-2.26.so) 7fffa7d705b4 getaddrinfo+0x164 (/usr/lib64/libc-2.26.so) 13fb52d70 _init+0xbfc (/usr/bin/ping) 7fffa7c836a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so) 7fffa7c83898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so) 0 [unknown] ([unknown]) Case 2 - Attaching a probe at _int_malloc+0x180 (binary offset 0x9cf10). Return address in still in LR and a new stack frame has already been allocated but not used. The caller's caller, i.e. the third entry, is invalid and should be filtered out and not the second one. # objdump -d /usr/lib64/libc-2.26.so | less ... 000000000009cd90 <_int_malloc>: 9cd90: 17 00 4c 3c addis r2,r12,23 9cd94: 70 a3 42 38 addi r2,r2,-23696 9cd98: 26 00 80 7d mfcr r12 9cd9c: f8 ff e1 fb std r31,-8(r1) 9cda0: 17 00 e4 3b addi r31,r4,23 9cda4: d8 ff 61 fb std r27,-40(r1) 9cda8: 78 23 9b 7c mr r27,r4 9cdac: 1f 00 bf 2b cmpldi cr7,r31,31 9cdb0: f0 ff c1 fb std r30,-16(r1) 9cdb4: b0 ff c1 fa std r22,-80(r1) 9cdb8: 78 1b 7e 7c mr r30,r3 9cdbc: 08 00 81 91 stw r12,8(r1) 9cdc0: 11 ff 21 f8 stdu r1,-240(r1) 9cdc4: 4c 01 9d 41 bgt cr7,9cf10 <_int_malloc+0x180> 9cdc8: 20 00 a4 2b cmpldi cr7,r4,32 ... 9cf08: 00 00 00 60 nop 9cf0c: 00 00 42 60 ori r2,r2,0 9cf10: e4 06 ff 7b rldicr r31,r31,0,59 9cf14: 40 f8 a4 7f cmpld cr7,r4,r31 9cf18: 68 05 9d 41 bgt cr7,9d480 <_int_malloc+0x6f0> ... 000000000009e3c0 <tcache_init.part.4>: ... 9e420: 40 02 80 38 li r4,576 9e424: 78 fb e3 7f mr r3,r31 9e428: 71 e9 ff 4b bl 9cd98 <_int_malloc+0x8> 9e42c: 00 00 a3 2f cmpdi cr7,r3,0 9e430: 78 1b 7e 7c mr r30,r3 ... 000000000009f7a0 <__libc_malloc>: ... 9f8f8: 00 00 89 2f cmpwi cr7,r9,0 9f8fc: 1c ff 9e 40 bne cr7,9f818 <__libc_malloc+0x78> 9f900: c9 ea ff 4b bl 9e3c8 <tcache_init.part.4+0x8> 9f904: 00 00 00 60 nop 9f908: e8 90 22 e9 ld r9,-28440(r2) ... # perf probe -x /usr/lib64/libc-2.26.so -a _int_malloc+0x180 # perf record -e probe_libc:_int_malloc -g ./test-malloc # perf script Before: test-malloc 6554 [009] 515975.797403: probe_libc:_int_malloc: (7fffa6e6cf10) 7fffa6e6cf10 _int_malloc+0x180 (/usr/lib64/libc-2.26.so) 7fffa6dd0000 [unknown] (/usr/lib64/libc-2.26.so) 7fffa6e6f904 malloc+0x164 (/usr/lib64/libc-2.26.so) 7fffa6e6f9fc malloc+0x25c (/usr/lib64/libc-2.26.so) 100006b4 main+0x38 (/home/testuser/test-malloc) 7fffa6df36a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so) 7fffa6df3898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so) 0 [unknown] ([unknown]) After: test-malloc 6554 [009] 515975.797403: probe_libc:_int_malloc: (7fffa6e6cf10) 7fffa6e6cf10 _int_malloc+0x180 (/usr/lib64/libc-2.26.so) 7fffa6e6e42c tcache_init.part.4+0x6c (/usr/lib64/libc-2.26.so) 7fffa6e6f904 malloc+0x164 (/usr/lib64/libc-2.26.so) 7fffa6e6f9fc malloc+0x25c (/usr/lib64/libc-2.26.so) 100006b4 main+0x38 (/home/sandipan/test-malloc) 7fffa6df36a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so) 7fffa6df3898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so) 0 [unknown] ([unknown]) Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Maynard Johnson <maynard@us.ibm.com> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Fixes: a60335ba3298 ("perf tools powerpc: Adjust callchain based on DWARF debug info") Link: http://lkml.kernel.org/r/24bb726d91ed173aebc972ec3f41a2ef2249434e.1530724939.git.sandipan@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf list: Add missing documentation for --desc and --debug optionsSangwon Hong
Add missing documentation for --desc and --debug options to the 'perf list' man page. Signed-off-by: Sangwon Hong <qpakzk@gmail.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20180717110738.10779-1-qpakzk@gmail.com [ Clarify that --desc is by default active ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf kvm: Fix subcommands on s390Thomas Richter
With commit eca0fa28cd0d ("perf record: Provide detailed information on s390 CPU") s390 platform provides detailed type/model/capacity information in the CPU identifier string instead of just "IBM/S390". This breaks 'perf kvm' support which uses hard coded string IBM/S390 to compare with the CPU identifier string. Fix this by changing the comparison. Reported-by: Stefan Raspl <raspl@linux.ibm.com> Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Tested-by: Stefan Raspl <raspl@linux.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: stable@vger.kernel.org Fixes: eca0fa28cd0d ("perf record: Provide detailed information on s390 CPU") Link: http://lkml.kernel.org/r/20180712070936.67547-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf stat: Add transaction flag (-T) support for s390Thomas Richter
The 'perf stat' command line flag -T to display transaction counters is currently supported for x86 only. Add support for s390. It is based on the metrics flag -M transaction using the architecture dependent JSON files. This requires a metric named "transaction" in the JSON files for the platform. Introduce a new function metricgroup__has_metric() to check for the existence of a metric_name transaction. As suggested by Andi Kleen, this is the new approach to support transactions counters. Other architectures will follow. Output before: [root@p23lp27 perf]# ./perf stat -T -- sleep 1 Cannot set up transaction events [root@p23lp27 perf]# Output after: [root@s35lp76 perf]# ./perf stat -T -- ~/mytesttx 1 >/tmp/111 Performance counter stats for '/root/mytesttx 1': 1 tx_c_tend # 13.0 transaction 1 tx_nc_tend 11 tx_nc_tabort 0 tx_c_tabort_special 0 tx_c_tabort_no_special 0.001070109 seconds time elapsed [root@s35lp76 perf]# Suggested-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20180626071701.58190-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf json: Add s390 transaction counter definitionThomas Richter
'perf stat' displays transactional counters using flag -T on x86. On s390 use a JSON file defined metric named transaction to achieve the same result. Output before: none Output after: [root@s35lp76 perf]# ./perf stat -M transaction -- \ ~/mytesttx 1 >/tmp/111 Performance counter stats for '/root/mytesttx 1': 1 tx_c_tend # 13.0 transaction 1 tx_nc_tend 11 tx_nc_tabort 0 tx_c_tabort_special 0 tx_c_tabort_no_special 0.001061232 seconds time elapsed [root@s35lp76 perf]# Suggested-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20180621080452.61012-3-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf list: Add s390 support for detailed PMU event descriptionThomas Richter
Correct the support of detailed/verbose PMU event description by using the "Unit": keyword in the json files to address event names refering to the /sys/devices/cpum_[cs]f devices. Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20180621080452.61012-2-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24Revert "perf list: Add s390 support for detailed/verbose PMU event description"Thomas Richter
This reverts commit 038586c34301578e538f6c5aa79ca82bce1b9152. Fix the support of detailed/verbose PMU event description by using the "Unit": keyword in the json files to address event names refering to the /sys/devices/cpum_[cs]f devices. Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20180621080452.61012-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf cs-etm: Bail out immediately for instruction sample failureLeo Yan
If the instruction sample failure has happened, it isn't necessary to execute to the end of the function cs_etm__flush(). This commit is to bail out immediately and return the error code. Signed-off-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Walker <robert.walker@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1529298599-3876-3-git-send-email-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf cs-etm: Introduce invalid address macroLeo Yan
This patch introduces invalid address macro and uses it to replace dummy value '0xdeadbeefdeadbeefUL'. Signed-off-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Walker <robert.walker@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1529298599-3876-2-git-send-email-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf hists: Clarify callchain disabling when availableArnaldo Carvalho de Melo
We want to allow having mixed events with/without callchains, not using a global flag to show callchains, but allowing supressing callchains when they are present. So invert the logic of the last parameter to hists__fprint() to that effect. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-ohqyisr6qge79qa95ojslptx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24perf tests: Check that complex event name is parsed correctlyAlexey Budankov
Extend regression testing to cover case of complex event names enabled by the cset f92da71280fb ("perf record: Enable arbitrary event names thru name= modifier"). Testing it: # perf test 1: vmlinux symtab matches kallsyms : Skip 2: Detect openat syscall event : Ok 3: Detect openat syscall event on all cpus : Ok 4: Read samples using the mmap interface : Ok 5: Test data source output : Ok 6: Parse event definition strings : Ok <===! 7: Simple expression parser : Ok ... Committer testing: # perf test "event definition" 6: Parse event definition strings : Ok # perf test -v 6 2> /tmp/before # perf test -v 6 2> /tmp/after # diff -u /tmp/before /tmp/after --- /tmp/before 2018-06-19 10:50:21.485572638 -0300 +++ /tmp/after 2018-06-19 10:50:40.886572896 -0300 @@ -1,6 +1,6 @@ 6: Parse event definition strings : --- start --- -test child forked, pid 24259 +test child forked, pid 24904 running test 0 'syscalls:sys_enter_openat'Using CPUID GenuineIntel-6-3D registering plugin: /root/.traceevent/plugins/plugin_kvm.so registering plugin: /root/.traceevent/plugins/plugin_hrtimer.so @@ -136,9 +136,11 @@ running test 50 '4:0x6530160/name=numpmu/' running test 51 'L1-dcache-misses/name=cachepmu/' running test 52 'intel_pt//u' +running test 53 'cycles/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks'/Duk' running test 0 'cpu/config=10,config1,config2=3,period=1000/u' running test 1 'cpu/config=1,name=krava/u,cpu/config=2/u' running test 2 'cpu/config=1,call-graph=fp,time,period=100000/,cpu/config=2,call-graph=no,time=0,period=2000/' +running test 3 'cpu/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks',period=0x1,event=0x2,umask=0x3/ukp' el-capacity -> cpu/event=0x54,umask=0x2/ el-conflict -> cpu/event=0x54,umask=0x1/ el-start -> cpu/event=0xc8,umask=0x1/ # Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/ad30b774-219b-7b80-c610-4e9e298cf8a7@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24Merge remote-tracking branch 'tip/perf/urgent' into perf/coreArnaldo Carvalho de Melo
To pick up fixes. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-07-24selftests/powerpc: Update memcmp_64 selftest for VMX implementationSimon Guo
This patch reworked selftest memcmp_64 so that memcmp selftest can cover more test cases. It adds testcases for: - memcmp over 4K bytes size. - s1/s2 with different/random offset on 16 bytes boundary. - enter/exit_vmx_ops pairness. Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> [mpe: Add -maltivec to fix build on some toolchains] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-24selftests/powerpc: Fix ptrace-pkey for default execute permission changeRam Pai
The test case assumes execute-permissions of unallocated keys are enabled by default, which is incorrect. Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-24selftests/powerpc: Fix core-pkey for default execute permission changeRam Pai
Only when the key is allocated, its permission are enabled. Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-23selftests: forwarding: add tests for TC chain templatesJiri Pirko
Add basic sanity tests for TC chain templates. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-23selftests: forwarding: add tests for TC chains creation adn destructionJiri Pirko
Add basic sanity tests for TC chains. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-23selftests: forwarding: move shblock tc support check to a separate helperJiri Pirko
The shared block support is only needed for tc_shblock.sh. No need to require that for other test. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-24bpf: btf: Ensure the member->offset is in the right orderMartin KaFai Lau
This patch ensures the member->offset of a struct is in the correct order (i.e the later member's offset cannot go backward). The current "pahole -J" BTF encoder does not generate something like this. However, checking this can ensure future encoder will not violate this. Fixes: 69b693f0aefa ("bpf: btf: Introduce BPF Type Format (BTF)") Signed-off-by: Martin KaFai Lau <kafai@fb.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-07-23iio: Add modifier for DUV lightMaxime Roussin-Bélanger
Signed-off-by: Maxime Roussin-Bélanger <maxime.roussinbelanger@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-07-23selftests: forwarding: gre_multipath: Drop IPv6 testsPetr Machata
Support for device-only IPv6 multipath next hops was dropped in commit 33bd5ac54dc4 ("net/ipv6: Revert attempt to simplify route replace and append") and as of commit b5d2d75e079a ("net/ipv6: Do not allow device only routes via the multipath API"), attempts to add a next hop like that yield an explicit diagnostic. Correspondingly, drop the IPv6 parts of GRE multipath test that are supposed to test that code. Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-23rseq/selftests: Add support for arm64Will Deacon
Hook up arm64 support to the rseq selftests. Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2018-07-21Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core kernel fixes from Ingo Molnar: "This is mostly the copy_to_user_mcsafe() related fixes from Dan Williams, and an ORC fix for Clang" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/asm/memcpy_mcsafe: Fix copy_to_user_mcsafe() exception handling lib/iov_iter: Fix pipe handling in _copy_to_iter_mcsafe() lib/iov_iter: Document _copy_to_iter_flushcache() lib/iov_iter: Document _copy_to_iter_mcsafe() objtool: Use '.strtab' if '.shstrtab' doesn't exist, to support ORC tables on Clang
2018-07-21iio: Add channel for PhaseMathieu Othacehe
Add new channel type support for phase. This channel may be used by Time-of-flight sensors to express the phase difference between emitted and received signals. Those sensor will then use the phase shift of return signals to approximate the distance to objects. Signed-off-by: Mathieu Othacehe <m.othacehe@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-07-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller
Daniel Borkmann says: ==================== pull-request: bpf-next 2018-07-20 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) Add sharing of BPF objects within one ASIC: this allows for reuse of the same program on multiple ports of a device, and therefore gains better code store utilization. On top of that, this now also enables sharing of maps between programs attached to different ports of a device, from Jakub. 2) Cleanup in libbpf and bpftool's Makefile to reduce unneeded feature detections and unused variable exports, also from Jakub. 3) First batch of RCU annotation fixes in prog array handling, i.e. there are several __rcu markers which are not correct as well as some of the RCU handling, from Roman. 4) Two fixes in BPF sample files related to checking of the prog_cnt upper limit from sample loader, from Dan. 5) Minor cleanup in sockmap to remove a set but not used variable, from Colin. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-20Merge ra.kernel.org:/pub/scm/linux/kernel/git/torvalds/linuxDavid S. Miller
All conflicts were trivial overlapping changes, so reasonably easy to resolve. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-20tools/power turbostat: fix -S on UP systemsLen Brown
The -S (system summary) option failed to print any data on a 1-processor system. Reported-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2018-07-20bpf: Use option "help" in the llvm-objcopy testMartin KaFai Lau
I noticed the "--version" option of the llvm-objcopy command has recently disappeared from the master llvm branch. It is currently used as a BTF support test in tools/testing/selftests/bpf/Makefile. This patch replaces it with "--help" which should be less error prone in the future. Fixes: c0fa1b6c3efc ("bpf: btf: Add BTF tests") Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-07-20tools/bpftool: Fix segfault case regarding 'pin' argumentsTaeung Song
Arguments of 'pin' subcommand should be checked at the very beginning of do_pin_any(). Otherwise segfault errors can occur when using 'map pin' or 'prog pin' commands, so fix it. # bpftool prog pin id Segmentation fault Fixes: 71bb428fe2c1 ("tools: bpf: add bpftool") Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reported-by: Taehee Yoo <ap420073@gmail.com> Signed-off-by: Taeung Song <treeze.taeung@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-07-20selftests/powerpc: Consolidate copy/paste test logicMichael Ellerman
This logic was shared between multiple tests, but now that we have removed all but one of them we can just move it into that test. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-20selftests/powerpc: Remove Power9 paste testsMichael Ellerman
Paste on POWER9 only works to accelerators and not on real memory. So these tests just generate a SIGILL. So just delete them. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-20selftests/powerpc: Remove Power9 copy_unaligned testMichael Ellerman
This is a test of the ISA 3.0 "copy" instruction. That instruction has an L field, which if set to 1 specifies that "the instruction identifies the beginning of a move group" (pp 858). That's also referred to as "copy first" vs "copy". In ISA 3.0B the copy instruction does not have an L field, and the corresponding bit in the instruction must be set to 1. This test is generating a "copy" instruction, not a "copy first", and so on Power9 (which implements 3.0B), this results in an illegal instruction. So just drop the test entirely. We still have copy_first_unaligned to test the "copy first" behaviour. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-19bpf: test case to check whether src/dst regs got mangled by xaddDaniel Borkmann
We currently do not have such a test case in test_verifier selftests but it's important to test under bpf_jit_enable=1 to make sure JIT implementations do not mistakenly mess with src/dst reg for xadd/{w,dw}. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-07-19tools: PCI: Add MSI-X supportGustavo Pimentel
Add MSI-X support to pcitest tool. Modify pcitest.sh script to accommodate MSI-X interrupt tests. Update documentation accordingly. Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
2018-07-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: "Lots of fixes, here goes: 1) NULL deref in qtnfmac, from Gustavo A. R. Silva. 2) Kernel oops when fw download fails in rtlwifi, from Ping-Ke Shih. 3) Lost completion messages in AF_XDP, from Magnus Karlsson. 4) Correct bogus self-assignment in rhashtable, from Rishabh Bhatnagar. 5) Fix regression in ipv6 route append handling, from David Ahern. 6) Fix masking in __set_phy_supported(), from Heiner Kallweit. 7) Missing module owner set in x_tables icmp, from Florian Westphal. 8) liquidio's timeouts are HZ dependent, fix from Nicholas Mc Guire. 9) Link setting fixes for sh_eth and ravb, from Vladimir Zapolskiy. 10) Fix NULL deref when using chains in act_csum, from Davide Caratti. 11) XDP_REDIRECT needs to check if the interface is up and whether the MTU is sufficient. From Toshiaki Makita. 12) Net diag can do a double free when killing TCP_NEW_SYN_RECV connections, from Lorenzo Colitti. 13) nf_defrag in ipv6 can unnecessarily hold onto dst entries for a full minute, delaying device unregister. From Eric Dumazet. 14) Update MAC entries in the correct order in ixgbe, from Alexander Duyck. 15) Don't leave partial mangles bpf program in jit_subprogs, from Daniel Borkmann. 16) Fix pfmemalloc SKB state propagation, from Stefano Brivio. 17) Fix ACK handling in DCTCP congestion control, from Yuchung Cheng. 18) Use after free in tun XDP_TX, from Toshiaki Makita. 19) Stale ipv6 header pointer in ipv6 gre code, from Prashant Bhole. 20) Don't reuse remainder of RX page when XDP is set in mlx4, from Saeed Mahameed. 21) Fix window probe handling of TCP rapair sockets, from Stefan Baranoff. 22) Missing socket locking in smc_ioctl(), from Ursula Braun. 23) IPV6_ILA needs DST_CACHE, from Arnd Bergmann. 24) Spectre v1 fix in cxgb3, from Gustavo A. R. Silva. 25) Two spots in ipv6 do a rol32() on a hash value but ignore the result. Fixes from Colin Ian King" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (176 commits) tcp: identify cryptic messages as TCP seq # bugs ptp: fix missing break in switch hv_netvsc: Fix napi reschedule while receive completion is busy MAINTAINERS: Drop inactive Vitaly Bordug's email net: cavium: Add fine-granular dependencies on PCI net: qca_spi: Fix log level if probe fails net: qca_spi: Make sure the QCA7000 reset is triggered net: qca_spi: Avoid packet drop during initial sync ipv6: fix useless rol32 call on hash ipv6: sr: fix useless rol32 call on hash net: sched: Using NULL instead of plain integer net: usb: asix: replace mii_nway_restart in resume path net: cxgb3_main: fix potential Spectre v1 lib/rhashtable: consider param->min_size when setting initial table size net/smc: reset recv timeout after clc handshake net/smc: add error handling for get_user() net/smc: optimize consumer cursor updates net/nfc: Avoid stalls when nfc_alloc_send_skb() returned NULL. ipv6: ila: select CONFIG_DST_CACHE net: usb: rtl8150: demote allmulti message to dev_dbg() ...
2018-07-18tc-tests: initial version of fw filter unit testsKeara Leibovitz
Create initial unit tests for the tc fw filter. Signed-off-by: Keara Leibovitz <kleib@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-18selftests/bpf: add test for sharing objects between netdevsJakub Kicinski
Add tests for sharing programs and maps between different netdevs. Use netdevsim's ability to pretend multiple netdevs belong to the same "ASIC". Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-07-18netdevsim: associate bound programs with shared devJakub Kicinski
Move bound program information from netdevsim to shared sub-object, as programs will soon be shared between netdevs of the same ASIC. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-07-17tools/power turbostat: Update turbostat(8) RAPL throttling column descriptionLen Brown
Explain that this column may increment for some throttling causes, and may not increment for others. Signed-off-by: Len Brown <len.brown@intel.com>
2018-07-18kbuild: Rename HOSTLDFLAGS to KBUILD_HOSTLDFLAGSLaura Abbott
In preparation for enabling command line LDFLAGS, re-name HOSTLDFLAGS to KBUILD_HOSTLDFLAGS as the internal use only flags. This should not have any visible effects. Signed-off-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18kbuild: Rename HOSTCFLAGS to KBUILD_HOSTCFLAGSLaura Abbott
In preparation for enabling command line CFLAGS, re-name HOSTCFLAGS to KBUILD_HOSTCFLAGS as the internal use only flags. This should not have any visible effects. Signed-off-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-17tools/memory-model: Rename litmus tests to comply to norm7Andrea Parri
norm7 produces the 'normalized' name of a litmus test, when the test can be generated from a single cycle that passes through each process exactly once. The commit renames such tests in order to comply to the naming scheme implemented by this tool. Signed-off-by: Andrea Parri <andrea.parri@amarulasolutions.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Cc: Akira Yokosawa <akiyks@gmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: David Howells <dhowells@redhat.com> Cc: Jade Alglave <j.alglave@ucl.ac.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luc Maranget <luc.maranget@inria.fr> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arch@vger.kernel.org Cc: parri.andrea@gmail.com Link: http://lkml.kernel.org/r/20180716180605.16115-14-paulmck@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-07-17tools/memory-model/Documentation: Fix typo, smb->smpYauheni Kaliuta
The tools/memory-model/Documentation/explanation.txt file says "For each other CPU C', smb_wmb() forces all po-earlier stores" This commit therefore replaces the "smb_wmb()" with "smp_wmb()". Signed-off-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: akiyks@gmail.com Cc: boqun.feng@gmail.com Cc: dhowells@redhat.com Cc: j.alglave@ucl.ac.uk Cc: linux-arch@vger.kernel.org Cc: luc.maranget@inria.fr Cc: npiggin@gmail.com Cc: parri.andrea@gmail.com Cc: will.deacon@arm.com Link: http://lkml.kernel.org/r/20180716180605.16115-13-paulmck@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-07-17tools/memory-model: Make scripts executablePaul E. McKenney
This commit makes the scripts executable to avoid the need for everyone to do so manually in their archive. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Akira Yokosawa <akiyks@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: boqun.feng@gmail.com Cc: dhowells@redhat.com Cc: j.alglave@ucl.ac.uk Cc: linux-arch@vger.kernel.org Cc: luc.maranget@inria.fr Cc: npiggin@gmail.com Cc: parri.andrea@gmail.com Cc: stern@rowland.harvard.edu Cc: will.deacon@arm.com Link: http://lkml.kernel.org/r/20180716180605.16115-7-paulmck@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-07-17tools/memory-model: Remove ACCESS_ONCE() from modelMark Rutland
Since commit: b899a850431e2dd0 ("compiler.h: Remove ACCESS_ONCE()") ... there has been no definition of ACCESS_ONCE() in the kernel tree, and it has been necessary to use READ_ONCE() or WRITE_ONCE() instead. Correspondingly, let's remove ACCESS_ONCE() from the kernel memory model. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Andrea Parri <andrea.parri@amarulasolutions.com> Cc: Akira Yokosawa <akiyks@gmail.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: David Howells <dhowells@redhat.com> Cc: Jade Alglave <j.alglave@ucl.ac.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luc Maranget <luc.maranget@inria.fr> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arch@vger.kernel.org Cc: parri.andrea@gmail.com Link: http://lkml.kernel.org/r/20180716180605.16115-6-paulmck@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-07-17tools/memory-model: Remove ACCESS_ONCE() from recipesMark Rutland
Since commit: b899a850431e2dd0 ("compiler.h: Remove ACCESS_ONCE()") ... there has been no definition of ACCESS_ONCE() in the kernel tree, and it has been necessary to use READ_ONCE() or WRITE_ONCE() instead. Let's update the exmaples in recipes.txt likewise for consistency, using READ_ONCE() for reads. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Andrea Parri <andrea.parri@amarulasolutions.com> Cc: Akira Yokosawa <akiyks@gmail.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: David Howells <dhowells@redhat.com> Cc: Jade Alglave <j.alglave@ucl.ac.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luc Maranget <luc.maranget@inria.fr> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arch@vger.kernel.org Cc: parri.andrea@gmail.com Link: http://lkml.kernel.org/r/20180716180605.16115-5-paulmck@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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