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authorMasami Hiramatsu <mhiramat@kernel.org>2018-06-19 19:16:17 +0300
committerIngo Molnar <mingo@kernel.org>2018-06-21 13:33:20 +0300
commit2bbda764d720aacabaad38374d26fcccb7843f17 (patch)
tree25d60c92825b75c73362b455baafb5464aca07cc /drivers/reset
parentcce188bd58cfbd603b904dbce75f34de2eff959a (diff)
downloadlinux-2bbda764d720aacabaad38374d26fcccb7843f17.tar.xz
kprobes/x86: Do not disable preempt on int3 path
Since int3 and debug exception(for singlestep) are run with IRQ disabled and while running single stepping we drop IF from regs->flags, that path must not be preemptible. So we can remove the preempt disable/enable calls from that path. Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: linux-arch@vger.kernel.org Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/lkml/152942497779.15209.2879580696589868291.stgit@devbox Signed-off-by: Ingo Molnar <mingo@kernel.org>
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