kernel/tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h, branch linux-6.2.y

perf arm-spe: Add support for ARMv8.3-SPE

2020-11-26T12:31:46Z

This patch is to support Armv8.3 extension for SPE, it adds alignment field in the Events packet and it supports the Scalable Vector Extension (SVE) for Operation packet and Events packet with two additions: - The vector length for SVE operations in the Operation Type packet; - The incomplete predicate and empty predicate fields in the Events packet. Signed-off-by: Wei Li Signed-off-by: Leo Yan Reviewed-by: Andre Przywara Acked-by: Will Deacon Cc: Alexander Shishkin Cc: Al Grant Cc: Arnaldo Carvalho de Melo Cc: Dave Martin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20201119152441.6972-17-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf arm_spe: Decode memory tagging properties

2020-11-26T12:31:46Z

When SPE records a physical address, it can additionally tag the event with information from the Memory Tagging architecture extension. Decode the two additional fields in the SPE event payload. [leoy: Refined patch to use predefined macros] Signed-off-by: Andre Przywara Signed-off-by: Leo Yan Reviewed-by: Dave Martin Acked-by: Will Deacon Cc: Alexander Shishkin Cc: Al Grant Cc: Arnaldo Carvalho de Melo Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wei Li Link: https://lore.kernel.org/r/20201119152441.6972-16-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Refactor operation packet handling

2020-11-26T12:31:46Z

Defines macros for operation packet header and formats (support sub classes for 'other', 'branch', 'load and store', etc). Uses these macros for operation packet decoding and dumping. Signed-off-by: Leo Yan Reviewed-by: Andre Przywara Acked-by: Will Deacon Cc: Alexander Shishkin Cc: Al Grant Cc: Arnaldo Carvalho de Melo Cc: Dave Martin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wei Li Link: https://lore.kernel.org/r/20201119152441.6972-14-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Refactor event type handling

2020-11-26T12:31:46Z

Move the enums of event types to arm-spe-pkt-decoder.h, thus function arm_spe_pkt_desc_event() can use them for bitmasks. Suggested-by: Andre Przywara Signed-off-by: Leo Yan Reviewed-by: Andre Przywara Acked-by: Will Deacon Cc: Alexander Shishkin Cc: Al Grant Cc: Arnaldo Carvalho de Melo Cc: Dave Martin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wei Li Link: https://lore.kernel.org/r/20201119152441.6972-11-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Refactor counter packet handling

2020-11-26T12:31:43Z

This patch defines macros for counter packet header, and uses macros to replace hard code values in functions arm_spe_get_counter() and arm_spe_pkt_desc(). In the function arm_spe_get_counter(), adds a new line for more readable. Signed-off-by: Leo Yan Reviewed-by: Andre Przywara Acked-by: Will Deacon Cc: Alexander Shishkin Cc: Al Grant Cc: Arnaldo Carvalho de Melo Cc: Dave Martin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wei Li Link: https://lore.kernel.org/r/20201119152441.6972-9-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Refactor context packet handling

2020-11-26T12:31:41Z

Minor refactoring to use macro for index mask. Signed-off-by: Leo Yan Reviewed-by: Andre Przywara Acked-by: Will Deacon Cc: Alexander Shishkin Cc: Al Grant Cc: Arnaldo Carvalho de Melo Cc: Dave Martin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wei Li Link: https://lore.kernel.org/r/20201119152441.6972-7-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Refactor address packet handling

2020-11-26T12:31:38Z

This patch is to refactor address packet handling, it defines macros for address packet's header and payload, these macros are used by decoder and the dump flow. Signed-off-by: Leo Yan Reviewed-by: Andre Przywara Acked-by: Will Deacon Cc: Alexander Shishkin Cc: Al Grant Cc: Arnaldo Carvalho de Melo Cc: Dave Martin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wei Li Link: https://lore.kernel.org/r/20201119152441.6972-5-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Refactor packet header parsing

2020-11-26T12:31:29Z

The packet header parsing uses the hard coded values and it uses nested if-else statements. To improve the readability, this patch refactors the macros for packet header format so it removes the hard coded values. Furthermore, based on the new mask macros it reduces the nested if-else statements and changes to use the flat conditions checking, this is directive and can easily map to the descriptions in ARMv8-a architecture reference manual (ARM DDI 0487E.a), chapter 'D10.1.5 Statistical Profiling Extension protocol packet headers'. Signed-off-by: Leo Yan Reviewed-by: Andre Przywara Acked-by: Will Deacon Cc: Alexander Shishkin Cc: Al Grant Cc: Arnaldo Carvalho de Melo Cc: Dave Martin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wei Li Link: https://lore.kernel.org/r/20201119152441.6972-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf arm-spe: Support synthetic events

2020-06-01T15:24:23Z

After the commit ffd3d18c20b8 ("perf tools: Add ARM Statistical Profiling Extensions (SPE) support") has been merged, it supports to output raw data with option "--dump-raw-trace". However, it misses for support synthetic events so cannot output any statistical info. This patch is to improve the "perf report" support for ARM SPE for four types synthetic events: First level cache synthetic events, including L1 data cache accessing and missing events; Last level cache synthetic events, including last level cache accessing and missing events; TLB synthetic events, including TLB accessing and missing events; Remote access events, which is used to account load/store operations caused to another socket. Example usage: $ perf record -c 1024 -e arm_spe_0/branch_filter=1,ts_enable=1,pct_enable=1,pa_enable=1,load_filter=1,jitter=1,store_filter=1,min_latency=0/ dd if=/dev/zero of=/dev/null count=10000 $ perf report --stdio # Samples: 59 of event 'l1d-miss' # Event count (approx.): 59 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. .................................. # 23.73% 23.73% dd [kernel.kallsyms] [k] perf_iterate_ctx.constprop.135 20.34% 20.34% dd [kernel.kallsyms] [k] filemap_map_pages 5.08% 5.08% dd [kernel.kallsyms] [k] perf_event_mmap 5.08% 5.08% dd [kernel.kallsyms] [k] unlock_page_memcg 5.08% 5.08% dd [kernel.kallsyms] [k] unmap_page_range 3.39% 3.39% dd [kernel.kallsyms] [k] PageHuge 3.39% 3.39% dd [kernel.kallsyms] [k] release_pages 3.39% 3.39% dd ld-2.28.so [.] 0x0000000000008b5c 1.69% 1.69% dd [kernel.kallsyms] [k] __alloc_fd [...] # Samples: 3K of event 'l1d-access' # Event count (approx.): 3980 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ...................................... # 26.98% 26.98% dd [kernel.kallsyms] [k] ret_to_user 10.53% 10.53% dd [kernel.kallsyms] [k] fsnotify 7.51% 7.51% dd [kernel.kallsyms] [k] new_sync_read 4.57% 4.57% dd [kernel.kallsyms] [k] vfs_read 4.35% 4.35% dd [kernel.kallsyms] [k] vfs_write 3.69% 3.69% dd [kernel.kallsyms] [k] __fget_light 3.69% 3.69% dd [kernel.kallsyms] [k] rw_verify_area 3.44% 3.44% dd [kernel.kallsyms] [k] security_file_permission 2.76% 2.76% dd [kernel.kallsyms] [k] __fsnotify_parent 2.44% 2.44% dd [kernel.kallsyms] [k] ksys_write 2.24% 2.24% dd [kernel.kallsyms] [k] iov_iter_zero 2.19% 2.19% dd [kernel.kallsyms] [k] read_iter_zero 1.81% 1.81% dd dd [.] 0x0000000000002960 1.78% 1.78% dd dd [.] 0x0000000000002980 [...] # Samples: 35 of event 'llc-miss' # Event count (approx.): 35 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ........................... # 34.29% 34.29% dd [kernel.kallsyms] [k] filemap_map_pages 8.57% 8.57% dd [kernel.kallsyms] [k] unlock_page_memcg 8.57% 8.57% dd [kernel.kallsyms] [k] unmap_page_range 5.71% 5.71% dd [kernel.kallsyms] [k] PageHuge 5.71% 5.71% dd [kernel.kallsyms] [k] release_pages 5.71% 5.71% dd ld-2.28.so [.] 0x0000000000008b5c 2.86% 2.86% dd [kernel.kallsyms] [k] __queue_work 2.86% 2.86% dd [kernel.kallsyms] [k] __radix_tree_lookup 2.86% 2.86% dd [kernel.kallsyms] [k] copy_page [...] # Samples: 2 of event 'llc-access' # Event count (approx.): 2 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ............. # 50.00% 50.00% dd [kernel.kallsyms] [k] copy_page 50.00% 50.00% dd libc-2.28.so [.] _dl_addr # Samples: 48 of event 'tlb-miss' # Event count (approx.): 48 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. .................................. # 20.83% 20.83% dd [kernel.kallsyms] [k] perf_iterate_ctx.constprop.135 12.50% 12.50% dd [kernel.kallsyms] [k] __arch_clear_user 10.42% 10.42% dd [kernel.kallsyms] [k] clear_page 4.17% 4.17% dd [kernel.kallsyms] [k] copy_page 4.17% 4.17% dd [kernel.kallsyms] [k] filemap_map_pages 2.08% 2.08% dd [kernel.kallsyms] [k] __alloc_fd 2.08% 2.08% dd [kernel.kallsyms] [k] __mod_memcg_state.part.70 2.08% 2.08% dd [kernel.kallsyms] [k] __queue_work 2.08% 2.08% dd [kernel.kallsyms] [k] __rcu_read_unlock 2.08% 2.08% dd [kernel.kallsyms] [k] d_path 2.08% 2.08% dd [kernel.kallsyms] [k] destroy_inode 2.08% 2.08% dd [kernel.kallsyms] [k] do_dentry_open [...] # Samples: 9K of event 'tlb-access' # Event count (approx.): 9573 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ...................................... # 25.79% 25.79% dd [kernel.kallsyms] [k] __arch_clear_user 11.22% 11.22% dd [kernel.kallsyms] [k] ret_to_user 8.56% 8.56% dd [kernel.kallsyms] [k] fsnotify 4.06% 4.06% dd [kernel.kallsyms] [k] new_sync_read 3.67% 3.67% dd [kernel.kallsyms] [k] el0_svc_common.constprop.2 3.04% 3.04% dd [kernel.kallsyms] [k] __fsnotify_parent 2.90% 2.90% dd [kernel.kallsyms] [k] vfs_write 2.82% 2.82% dd [kernel.kallsyms] [k] vfs_read 2.52% 2.52% dd libc-2.28.so [.] write 2.26% 2.26% dd [kernel.kallsyms] [k] security_file_permission 2.08% 2.08% dd [kernel.kallsyms] [k] ksys_write 1.96% 1.96% dd [kernel.kallsyms] [k] rw_verify_area 1.95% 1.95% dd [kernel.kallsyms] [k] read_iter_zero [...] # Samples: 9 of event 'branch-miss' # Event count (approx.): 9 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ......................... # 22.22% 22.22% dd libc-2.28.so [.] _dl_addr 11.11% 11.11% dd [kernel.kallsyms] [k] __arch_clear_user 11.11% 11.11% dd [kernel.kallsyms] [k] __arch_copy_from_user 11.11% 11.11% dd [kernel.kallsyms] [k] __dentry_kill 11.11% 11.11% dd [kernel.kallsyms] [k] __efistub_memcpy 11.11% 11.11% dd ld-2.28.so [.] 0x0000000000012b7c 11.11% 11.11% dd libc-2.28.so [.] 0x000000000002a980 11.11% 11.11% dd libc-2.28.so [.] 0x0000000000083340 # Samples: 29 of event 'remote-access' # Event count (approx.): 29 # # Children Self Command Shared Object Symbol # ........ ........ ....... ................. ........................... # 41.38% 41.38% dd [kernel.kallsyms] [k] filemap_map_pages 10.34% 10.34% dd [kernel.kallsyms] [k] unlock_page_memcg 10.34% 10.34% dd [kernel.kallsyms] [k] unmap_page_range 6.90% 6.90% dd [kernel.kallsyms] [k] release_pages 3.45% 3.45% dd [kernel.kallsyms] [k] PageHuge 3.45% 3.45% dd [kernel.kallsyms] [k] __queue_work 3.45% 3.45% dd [kernel.kallsyms] [k] page_add_file_rmap 3.45% 3.45% dd [kernel.kallsyms] [k] page_counter_try_charge 3.45% 3.45% dd [kernel.kallsyms] [k] page_remove_rmap 3.45% 3.45% dd [kernel.kallsyms] [k] xas_start 3.45% 3.45% dd ld-2.28.so [.] 0x0000000000002a1c 3.45% 3.45% dd ld-2.28.so [.] 0x0000000000008b5c 3.45% 3.45% dd ld-2.28.so [.] 0x00000000000093cc Signed-off-by: Tan Xiaojun Tested-by: James Clark Cc: Adrian Hunter Cc: Al Grant Cc: Alexander Shishkin Cc: Andi Kleen Cc: Ian Rogers Cc: Jin Yao Cc: Jiri Olsa Cc: Leo Yan Cc: Mark Rutland Cc: Mathieu Poirier Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200530122442.490-4-leo.yan@linaro.org Signed-off-by: James Clark Signed-off-by: Leo Yan Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Move arm-spe-pkt-decoder.h/c to the new dir

2020-06-01T15:24:23Z

Create a new arm-spe-decoder directory for subsequent extensions and move arm-spe-pkt-decoder.h/c to this directory. No code changes. Signed-off-by: Tan Xiaojun Tested-by: James Clark Tested-by: Qi Liu Cc: Adrian Hunter Cc: Al Grant Cc: Alexander Shishkin Cc: Andi Kleen Cc: Ian Rogers Cc: Jin Yao Cc: Jiri Olsa Cc: Leo Yan Cc: Mark Rutland Cc: Mathieu Poirier Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200530122442.490-2-leo.yan@linaro.org Signed-off-by: James Clark Signed-off-by: Leo Yan Signed-off-by: Arnaldo Carvalho de Melo