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usdt: fix bpftrace parse error on arm64

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bpftrace reports parse error on arm64:
"parse error:
8@x0 4@[x21, #:lo12:.LANCHOR2]
"
using "nr" to override the default constraints string can fix this.

//the default is:
 stapsdt              0x0000004b       NT_STAPSDT (SystemTap probe descriptors)
    Provider: spdk
    Name: nvmf_tgt_state
    Location: 0x000000000006e664, Base: 0x00000000001ca6f0, Semaphore: 0x0000000000000000
    Arguments: 8@x0 4@[x21, #:lo12:.LANCHOR2]

//using "nr" as the constraints string:
 stapsdt              0x00000036       NT_STAPSDT (SystemTap probe descriptors)
    Provider: spdk
    Name: nvmf_tgt_state
    Location: 0x000000000006f680, Base: 0x00000000001cb730, Semaphore: 0x0000000000000000
    Arguments: 8@x0 4@x1

Change-Id: I25736dcf5a8593d2c156da41a2e28532ab8fa570
Signed-off-by: Richael Zhuang <richael.zhuang@arm.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14642
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
This commit is contained in:
Richael Zhuang 2022-09-13 11:01:03 +08:00 committed by Tomasz Zawadzki
parent 74649fb45a
commit e7a09f7c3f
1 changed files with 4 additions and 0 deletions
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4
include/spdk_internal/usdt.h
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@ -11,6 +11,10 @@
#if defined(SPDK_CONFIG_USDT) && !defined(SPDK_UNIT_TEST)
#if defined(__aarch64__)
#define STAP_SDT_ARG_CONSTRAINT nr
#endif
#include <sys/sdt.h>
#define SPDK_DTRACE_PROBE(name) DTRACE_PROBE1(spdk,name,spdk_get_ticks())