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| author | Chris Metcalf <cmetcalf@ezchip.com> | 2015-03-23 21:23:58 +0300 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@ezchip.com> | 2015-04-17 21:01:10 +0300 |
| commit | 49e4e15619cd7cd9fc275d460fae2a95c1337fcc (patch) | |
| tree | 700e24bb8f72a7662e7d4ae26d847e908d08de92 /arch/tile/include | |
| parent | b340c656af6317e28b466996a72cca019d97b42d (diff) | |
| download | linux-49e4e15619cd7cd9fc275d460fae2a95c1337fcc.tar.xz | |
tile: support CONTEXT_TRACKING and thus NOHZ_FULL
Add the TIF_NOHZ flag appropriately.
Add call to user_exit() on entry to do_work_pending() and on entry
to syscalls via do_syscall_trace_enter(), and also the top of
do_syscall_trace_exit() just because it's done in x86.
Add call to user_enter() at the bottom of do_work_pending() once we
have no more work to do before returning to userspace.
Wrap all the trap code in exception_enter() / exception_exit().
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'arch/tile/include')
| -rw-r--r-- | arch/tile/include/asm/thread_info.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/tile/include/asm/thread_info.h b/arch/tile/include/asm/thread_info.h index 96c14c1430d8..6130a3db505b 100644 --- a/arch/tile/include/asm/thread_info.h +++ b/arch/tile/include/asm/thread_info.h @@ -126,6 +126,7 @@ extern void _cpu_idle(void); #define TIF_NOTIFY_RESUME 8 /* callback before returning to user */ #define TIF_SYSCALL_TRACEPOINT 9 /* syscall tracepoint instrumentation */ #define TIF_POLLING_NRFLAG 10 /* idle is polling for TIF_NEED_RESCHED */ +#define TIF_NOHZ 11 /* in adaptive nohz mode */ #define _TIF_SIGPENDING (1<<TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) @@ -138,14 +139,16 @@ extern void _cpu_idle(void); #define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) #define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT) #define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) +#define _TIF_NOHZ (1<<TIF_NOHZ) /* Work to do on any return to user space. */ #define _TIF_ALLWORK_MASK \ - (_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_SINGLESTEP|\ - _TIF_ASYNC_TLB|_TIF_NOTIFY_RESUME) + (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_SINGLESTEP | \ + _TIF_ASYNC_TLB | _TIF_NOTIFY_RESUME | _TIF_NOHZ) /* Work to do at syscall entry. */ -#define _TIF_SYSCALL_ENTRY_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_TRACEPOINT) +#define _TIF_SYSCALL_ENTRY_WORK \ + (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_TRACEPOINT | _TIF_NOHZ) /* Work to do at syscall exit. */ #define _TIF_SYSCALL_EXIT_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_TRACEPOINT) |