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| author | Davidlohr Bueso <dave@stgolabs.net> | 2017-01-03 22:43:11 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-01-14 11:14:11 +0100 |
| commit | 0039962a1473f07fd5c8355bd8264be1eb87eb3e (patch) | |
| tree | 1611eeff5b2804ebaa7bd89172d85dcd77ac9228 /drivers/tty/tty_ldsem.c | |
| parent | locking/spinlocks/x86, paravirt: Remove paravirt_ticketlocks_enabled (diff) | |
| download | linux-0039962a1473f07fd5c8355bd8264be1eb87eb3e.tar.xz linux-0039962a1473f07fd5c8355bd8264be1eb87eb3e.zip | |
kernel/exit: Compute 'current' directly
This patch effectively replaces the tsk pointer dereference (which is
obviously == current), to directly use get_current() macro. In this
case, do_exit() always passes current to exit_mm(), hence we can
simply get rid of the argument. This is also a performance win on some
archs such as x86-64 and ppc64 -- arm64 is no longer an issue.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dave@stgolabs.net
Cc: mark.rutland@arm.com
Link: http://lkml.kernel.org/r/1483479794-14013-2-git-send-email-dave@stgolabs.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/tty/tty_ldsem.c')
0 files changed, 0 insertions, 0 deletions