CoreSight

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[PATCH 0/4] coresight: Add ETR-PERF polling.

by Daniel Kiss

This series adds a feature to ETR-PERF that sync the ETR buffer to perf periodically. This is really handy when the system wide trace is used because in this case the perf won't sync during the trace. In a per-thread setup the traced program might not go to the kernel frequvently enought to collect trace. Polling helps in both usecases. Can be used with strobing. Tuning polling period is challanging, I'm working on an additional patch that adds some metrics to help tune the polling period. Daniel Kiss (4): coresight: tmc-etr: Advance buffer pointer in sync buffer. coresight: tmc-etr: Track perf handler. coresight: etm-perf: Export etm_event_cpu_path. coresight: Add ETR-PERF polling. .../testing/sysfs-bus-coresight-devices-tmc | 8 + drivers/hwtracing/coresight/Makefile | 2 +- .../hwtracing/coresight/coresight-etm-perf.c | 10 +- .../hwtracing/coresight/coresight-etm-perf.h | 1 + .../coresight/coresight-etr-perf-polling.c | 316 ++++++++++++++++++ .../coresight/coresight-etr-perf-polling.h | 42 +++ .../hwtracing/coresight/coresight-tmc-core.c | 2 + .../hwtracing/coresight/coresight-tmc-etr.c | 22 +- drivers/hwtracing/coresight/coresight-tmc.h | 2 + 9 files changed, 401 insertions(+), 4 deletions(-) create mode 100644 drivers/hwtracing/coresight/coresight-etr-perf-polling.c create mode 100644 drivers/hwtracing/coresight/coresight-etr-perf-polling.h -- 2.25.1

5 years, 1 month

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by 邮件群发软件---不限制群发� ��度

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5 years, 1 month

[PATCH] coresight: Propagate symlink failure

by Jeremy Linton

If the symlink is unable to be created, the driver goes ahead and continues device creation. Instead lets propagate the failure, and fail the probe. Signed-off-by: Jeremy Linton <jeremy.linton(a)arm.com> --- drivers/hwtracing/coresight/coresight-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index 6c68d34d956e..2dc4b0110442 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -1392,7 +1392,7 @@ static int coresight_fixup_device_conns(struct coresight_device *csdev) } } - return 0; + return ret; } static int coresight_remove_match(struct device *dev, void *data) -- 2.31.1

5 years, 1 month

Instrument Test Leads and Cable Extensions

by 瓜淆

5 years, 1 month

Amazonプライムの自�痈�新�O定を解除いたしました！番号：022758492715

by Amazon�客サ�`ビス：202105269156

��쥸�åȥ��`��θ��¡�׷�ӤʤɤˤĤ��ޤ��ơ��¤��혤򤴴_�J��ȥ��`�ӥ��Amazon��ک`��˥��ơ��¤��Ƥ�� ޤ��Amazon�ץ饤��g��K�ˤ��顢 ��o�� ץ饤��?�ӥǥ�Ҋ��} �ʤɤΥץ饤��T�ص�Τ��ä��Ǥ��ʤ��ʤ�ޤ��(��ʥץ饤��T�ص��_�J��ˤ� ��򥯥�å��Ƥ��)��ˤ��־A��γ̤����¤��ޤ� �@�A��ƥץ饤��T�ص�򤪘S��ߤ��Ϥϡ��Amazon�ץ饤��T��ι��ک`��ˤơ��T�Y��@�A��롹 �򥯥�å��Ƥ�� T��ι��ک`��Ǵ_�J �ʤ��72�r�g��ڤˤ��_�J��ʤ��ϡ��\��ꤷ�U��ޤ��󡢤��͘��ΰ�ȫ�Ξ顢��Ȥ��ޤ򤵤��Ƥ��ޤ��Τǡ��ᤴ�˳Ф�� Ȥ˵��h��E��`�륢�ɥ쥹�˥��Ǥ��ʤ�� Ϥ碌�� Amazon��ީ`��`�ӥ�� Amazon��`�ӥ��ä��꤬�Ȥ��ޤ�� Amazon.co.jp ��ީ`��`�ӥ�

5 years, 1 month

[PATCH] coresight: tmc-etf: Fix global-out-of-bounds in tmc_update_etf_buffer()

by Sai Prakash Ranjan

commit 6f755e85c332 ("coresight: Add helper for inserting synchronization packets") removed trailing '\0' from barrier_pkt array and updated the call sites like etb_update_buffer() to have proper checks for barrier_pkt size before read but missed updating tmc_update_etf_buffer() which still reads barrier_pkt past the array size resulting in KASAN out-of-bounds bug. Fix this by adding a check for barrier_pkt size before accessing like it is done in etb_update_buffer(). BUG: KASAN: global-out-of-bounds in tmc_update_etf_buffer+0x4b8/0x698 Read of size 4 at addr ffffffd05b7d1030 by task perf/2629 Call trace: dump_backtrace+0x0/0x27c show_stack+0x20/0x2c dump_stack+0x11c/0x188 print_address_description+0x3c/0x4a4 __kasan_report+0x140/0x164 kasan_report+0x10/0x18 __asan_report_load4_noabort+0x1c/0x24 tmc_update_etf_buffer+0x4b8/0x698 etm_event_stop+0x248/0x2d8 etm_event_del+0x20/0x2c event_sched_out+0x214/0x6f0 group_sched_out+0xd0/0x270 ctx_sched_out+0x2ec/0x518 __perf_event_task_sched_out+0x4fc/0xe6c __schedule+0x1094/0x16a0 preempt_schedule_irq+0x88/0x170 arm64_preempt_schedule_irq+0xf0/0x18c el1_irq+0xe8/0x180 perf_event_exec+0x4d8/0x56c setup_new_exec+0x204/0x400 load_elf_binary+0x72c/0x18c0 search_binary_handler+0x13c/0x420 load_script+0x500/0x6c4 search_binary_handler+0x13c/0x420 exec_binprm+0x118/0x654 __do_execve_file+0x77c/0xba4 __arm64_compat_sys_execve+0x98/0xac el0_svc_common+0x1f8/0x5e0 el0_svc_compat_handler+0x84/0xb0 el0_svc_compat+0x10/0x50 The buggy address belongs to the variable: barrier_pkt+0x10/0x40 Memory state around the buggy address: ffffffd05b7d0f00: fa fa fa fa 04 fa fa fa fa fa fa fa 00 00 00 00 ffffffd05b7d0f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffffd05b7d1000: 00 00 00 00 00 00 fa fa fa fa fa fa 00 00 00 03 ^ ffffffd05b7d1080: fa fa fa fa 00 02 fa fa fa fa fa fa 03 fa fa fa ffffffd05b7d1100: fa fa fa fa 00 00 00 00 05 fa fa fa fa fa fa fa ================================================================== Fixes: 6f755e85c332 ("coresight: Add helper for inserting synchronization packets") Cc: stable(a)vger.kernel.org Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan(a)codeaurora.org> --- drivers/hwtracing/coresight/coresight-tmc-etf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-tmc-etf.c b/drivers/hwtracing/coresight/coresight-tmc-etf.c index 45b85edfc690..cd0fb7bfba68 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etf.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etf.c @@ -530,7 +530,7 @@ static unsigned long tmc_update_etf_buffer(struct coresight_device *csdev, buf_ptr = buf->data_pages[cur] + offset; *buf_ptr = readl_relaxed(drvdata->base + TMC_RRD); - if (lost && *barrier) { + if (lost && i < CORESIGHT_BARRIER_PKT_SIZE) { *buf_ptr = *barrier; barrier++; } -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

5 years, 1 month

United nations

by Michael Jurgen

Dear, coresight

5 years, 1 month

【重要】カード情報更新のお知らせ

by Amazon.co.jp

請求先住所が変更鹿児島県西之表市の馬毛島への自衛隊基地建設を巡り、塩田康一知事がに終わったなって思い国に島周辺での海上ボーリング調査を許可したことは違法だとして、地元漁業者が許可の取り消しを求めた訴訟の判決で、鹿児島地裁（古谷健二郎裁判長）は24日、訴えを却下した。湾など限られた海域なら説得力もある訴訟かもしれないが　海洋地域調に終わったなって思い査だから　漁場はそこに限られた物じゃス感染症が拡大してないと言う判断でしょうね

5 years, 1 month

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by Daniel Smith

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5 years, 1 month

United nations

by Michael Jurgen

Dear, coresight

5 years, 1 month

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