wireguard-linux/arch/nds32/kernel/ftrace.c, branch jd/unified-crypt-queue

module: Remove set_all_modules_text_*()

2019-11-27T06:44:25Z

Now that there are no users of set_all_modules_text_*() left, remove it. While it appears nds32 uses it, it does not have STRICT_MODULE_RWX and therefore ends up with the NOP stubs. Tested-by: Alexei Starovoitov Tested-by: Steven Rostedt (VMware) Signed-off-by: Peter Zijlstra (Intel) Acked-by: Alexei Starovoitov Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: Greentime Hu Cc: H. Peter Anvin Cc: Jessica Yu Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Vincent Chen Link: https://lkml.kernel.org/r/20191111132458.284298307@infradead.org Signed-off-by: Ingo Molnar

function_graph: Place ftrace_graph_entry_stub() prototype in include/linux/ftrace.h

2019-04-29T21:17:22Z

ftrace_graph_entry_stub() is defined in generic code, its prototype should be in the generic header and not defined throughout architecture specific code in order to use it. Cc: Greentime Hu Cc: Vincent Chen Cc: "James E.J. Bottomley" Cc: Helge Deller Cc: linux-parisc@vger.kernel.org Signed-off-by: Steven Rostedt (VMware)

nds32: function_graph: Simplify with function_graph_enter()

2018-11-28T01:30:43Z

The function_graph_enter() function does the work of calling the function graph hook function and the management of the shadow stack, simplifying the work done in the architecture dependent prepare_ftrace_return(). Have nds32 use the new code, and remove the shadow stack management as well as having to set up the trace structure. This is needed to prepare for a fix of a design bug on how the curr_ret_stack is used. Cc: Greentime Hu Cc: stable@kernel.org Fixes: 03274a3ffb449 ("tracing/fgraph: Adjust fgraph depth before calling trace return callback") Reviewed-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware)

nds32: Fix a kernel panic issue because of wrong frame pointer access.

2018-09-04T06:45:19Z

It can make sure that trace_hardirqs_off/trace_hardirqs_on can get a correct return address by frame pointer through __builtin_return_address() in this fix. Unable to handle kernel paging request at virtual address fffffffc pgd = 3c42e9cf [fffffffc] *pgd=02a9c000 Internal error: Oops: 1 [#1] Modules linked in: CPU: 0 PC is at trace_hardirqs_off+0x78/0xec LP is at common_exception_handler+0xda/0xf4 pc : [] lp : [] Tainted: G W sp : ada60ab0 fp : efcaff48 gp : 3a020490 r25: efcb0000 r24: 00000000 r23: 00000000 r22: 00000000 r21: 00000000 r20: 000700c1 r19: 000700ca r18: 3a21b018 r17: 00000001 r16: 00000002 r15: 00000001 r14: 0000002a r13: 3a00a804 r12: ada60ab0 r11: 3a113af8 r10: 3a01c530 r9 : 3a124404 r8 : 00120f9c r7 : b2352eba r6 : 00000000 r5 : 3a126b58 r4 : 00000000 r3 : 3a1726a8 r2 : b2921000 r1 : 00000000 r0 : 00000000 IRQs off Segment user Process init (pid: 1, stack limit = 0x069d7f15) Stack: (0xada60ab0 to 0xada61000) Stack: 0aa0: 00000000 00000003 3a110000 0011f000 Stack: 0ac0: 00000005 00000000 00000000 00000000 ada60b10 3a01fe68 ada60b0c ada60b08 Stack: 0ae0: 00000000 ada60ab8 ada60b30 3a020550 00000000 00000001 3a11c2f8 3a01c6e8 Stack: 0b00: 3a01cb80 fffffba8 3a113af8 3a21b018 3a122c28 00003ec4 00000165 00000000 Stack: 0b20: 3a126aec 0000006c 00000000 00000001 3a01fe68 00000000 00000003 00000000 Stack: 0b40: 00000001 000003f8 3a020930 3a01c530 00000008 ada60c18 3a020490 3a003120 Stack: 0b60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 Stack: 0b80: 00000000 00000000 00000000 00000000 ffff8000 00000000 00000000 00000000 Stack: 0ba0: 00000000 00000001 3a020550 00000000 3a01d020 00000000 fffff000 fffff000 Stack: 0bc0: 00000000 00000000 00000000 00000000 ada60f2c 00000000 00000001 00000000 Stack: 0be0: 00000000 00000000 3a01fe68 fffffab0 00008034 00000008 3a0010cc 3a01fe68 Stack: 0c00: 00000000 00000000 00000001 ada60c88 3a020490 3a0139d4 0009dc6f 00000000 Stack: 0c20: 00000000 00000000 ada60fce fffff000 00000000 0000ebe0 3a020038 3a020550 Stack: 0c40: ada60f20 ada60c90 3a0007f0 3a0002a8 ada60c8c 00000000 00000000 ada60c88 Stack: 0c60: 3a020490 3a004570 00000000 00000000 ada60f20 3a0007f0 3a000000 00000000 Stack: 0c80: 3a020490 3a004850 00000000 3a013f24 3a000000 00000000 3a01ff44 00000000 Stack: 0ca0: 00000000 00000000 00000000 00000000 00000000 00000000 3a01ff84 3a01ff7c Stack: 0cc0: 3a01ff4c 3a01ff5c 3a01ff64 3a01ff9c 3a01ffa4 3a01ffac 3a01ff6c 3a01ff74 Stack: 0ce0: 00000000 00000000 3a01ff44 00000000 00000000 00000000 00000000 00000000 Stack: 0d00: 3a01ff8c 00000000 00000000 3a01ff94 00000000 00000000 00000000 00000000 Stack: 0d20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 Stack: 0d40: 3a01ffbc 3a01ffb4 00000000 00000000 00000000 00000000 00000000 00000000 Stack: 0d60: 00000000 00000000 00000000 00000000 00000000 3a01ffc4 00000000 00000000 Stack: 0d80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 Stack: 0da0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 Stack: 0dc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 3a01ff54 Stack: 0de0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 Stack: 0e00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 Stack: 0e20: 00000000 00000004 00000000 00000000 00000000 00000000 00000000 00000000 Stack: 0e40: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 Stack: 0e60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 Stack: 0e80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 Stack: 0ea0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 Stack: 0ec0: 00000000 00000000 00000000 00000000 ffffffff 00000000 00000000 00000000 Stack: 0ee0: 00000000 00000000 00000000 00000000 ada60f20 00000000 00000000 00000000 Stack: 0f00: 00000000 00000000 00000000 00000000 00000000 00000000 3a020490 3a000b24 Stack: 0f20: 00000001 ada60fde 00000000 ada60fe4 ada60feb 00000000 00000021 3a038000 Stack: 0f40: 00000010 0009dc6f 00000006 00001000 00000011 00000064 00000003 00008034 Stack: 0f60: 00000004 00000020 00000005 00000008 00000007 3a000000 00000008 00000000 Stack: 0f80: 00000009 0000ebe0 0000000b 00000000 0000000c 00000000 0000000d 00000000 Stack: 0fa0: 0000000e 00000000 00000017 00000000 00000019 ada60fce 0000001f ada60ff6 Stack: 0fc0: 00000000 00000000 00000000 b5010000 fa839914 23b5dd89 a2aea540 692fc82e Stack: 0fe0: 0074696e 454d4f48 54002f3d 3d4d5245 756e696c 692f0078 0074696e 00000000 CPU: 0 PID: 1 Comm: init Tainted: G W 4.18.0-00015-g1888b64a2558-dirty #112 Hardware name: andestech,ae3xx (DT) Call Trace: [] dump_stack+0x2c/0x38 [] die+0x128/0x18c [] do_page_fault+0x3b8/0x4e0 [] ret_from_exception+0x0/0x10 [] common_exception_handler+0xda/0xf4 Signed-off-by: Greentime Hu

nds32/ftrace: Support dynamic function graph tracer

2018-09-04T06:45:18Z

This patch contains the implementation of dynamic function graph tracer. Signed-off-by: Zong Li Acked-by: Greentime Hu Signed-off-by: Greentime Hu

nds32/ftrace: Support dynamic function tracer

2018-09-04T06:45:18Z

This patch contains the implementation of dynamic function tracer. The mcount call is composed of three instructions, so there are three nop for enough placeholder. Signed-off-by: Zong Li Acked-by: Greentime Hu Signed-off-by: Greentime Hu

nds32/ftrace: Support static function graph tracer

2018-09-04T06:45:17Z

This patch contains implementation of static function graph tracer. Signed-off-by: Zong Li Acked-by: Greentime Hu Signed-off-by: Greentime Hu

nds32/ftrace: Support static function tracer

2018-09-04T06:45:17Z

This patch support the static function tracer. On nds32 ABI, we need to always push return address to stack for __builtin_return_address can work correctly, otherwise, it will get the wrong value of $lp at leaf function. Signed-off-by: Zong Li Acked-by: Greentime Hu Signed-off-by: Greentime Hu