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Merge branch 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull restartable sequence support from Thomas Gleixner:
 "The restartable sequences syscall (finally):

  After a lot of back and forth discussion and massive delays caused by
  the speculative distraction of maintainers, the core set of
  restartable sequences has finally reached a consensus.

  It comes with the basic non disputed core implementation along with
  support for arm, powerpc and x86 and a full set of selftests

  It was exposed to linux-next earlier this week, so it does not fully
  comply with the merge window requirements, but there is really no
  point to drag it out for yet another cycle"

* 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rseq/selftests: Provide Makefile, scripts, gitignore
  rseq/selftests: Provide parametrized tests
  rseq/selftests: Provide basic percpu ops test
  rseq/selftests: Provide basic test
  rseq/selftests: Provide rseq library
  selftests/lib.mk: Introduce OVERRIDE_TARGETS
  powerpc: Wire up restartable sequences system call
  powerpc: Add syscall detection for restartable sequences
  powerpc: Add support for restartable sequences
  x86: Wire up restartable sequence system call
  x86: Add support for restartable sequences
  arm: Wire up restartable sequences system call
  arm: Add syscall detection for restartable sequences
  arm: Add restartable sequences support
  rseq: Introduce restartable sequences system call
  uapi/headers: Provide types_32_64.h
This commit is contained in:
Linus Torvalds
2018-06-10 10:17:09 -07:00
parent f4e5b30d80 ccba8b6445
commit d82991a868
44 changed files with 5491 additions and 8 deletions
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57
include/trace/events/rseq.h Normal file
View File

@@ -0,0 +1,57 @@
/* SPDX-License-Identifier: GPL-2.0+ */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM rseq
#if !defined(_TRACE_RSEQ_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_RSEQ_H
#include <linux/tracepoint.h>
#include <linux/types.h>
TRACE_EVENT(rseq_update,
TP_PROTO(struct task_struct *t),
TP_ARGS(t),
TP_STRUCT__entry(
__field(s32, cpu_id)
),
TP_fast_assign(
__entry->cpu_id = raw_smp_processor_id();
),
TP_printk("cpu_id=%d", __entry->cpu_id)
);
TRACE_EVENT(rseq_ip_fixup,
TP_PROTO(unsigned long regs_ip, unsigned long start_ip,
unsigned long post_commit_offset, unsigned long abort_ip),
TP_ARGS(regs_ip, start_ip, post_commit_offset, abort_ip),
TP_STRUCT__entry(
__field(unsigned long, regs_ip)
__field(unsigned long, start_ip)
__field(unsigned long, post_commit_offset)
__field(unsigned long, abort_ip)
),
TP_fast_assign(
__entry->regs_ip = regs_ip;
__entry->start_ip = start_ip;
__entry->post_commit_offset = post_commit_offset;
__entry->abort_ip = abort_ip;
),
TP_printk("regs_ip=0x%lx start_ip=0x%lx post_commit_offset=%lu abort_ip=0x%lx",
__entry->regs_ip, __entry->start_ip,
__entry->post_commit_offset, __entry->abort_ip)
);
#endif /* _TRACE_SOCK_H */
/* This part must be outside protection */
#include <trace/define_trace.h>