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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-29 09:45:15 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-29 09:45:15 +0100 |
| commit | e1df957670aef74ffd9a4ad93e6d2c90bf6b4845 (patch) | |
| tree | bca1fcfef55b3e3e82c9a822b4ac6428fce2b419 /drivers/char/sysrq.c | |
| parent | x86: perf_counter remove unwanted hw_perf_enable_all (diff) | |
| parent | Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/p... (diff) | |
| download | linux-e1df957670aef74ffd9a4ad93e6d2c90bf6b4845.tar.xz linux-e1df957670aef74ffd9a4ad93e6d2c90bf6b4845.zip | |
Merge branch 'linus' into perfcounters/core
Conflicts:
fs/exec.c
include/linux/init_task.h
Simple context conflicts.
Diffstat (limited to 'drivers/char/sysrq.c')
| -rw-r--r-- | drivers/char/sysrq.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c index 52146c2a8d97..9bcf0c9848b1 100644 --- a/drivers/char/sysrq.c +++ b/drivers/char/sysrq.c @@ -276,6 +276,22 @@ static struct sysrq_key_op sysrq_showstate_blocked_op = { .enable_mask = SYSRQ_ENABLE_DUMP, }; +#ifdef CONFIG_TRACING +#include <linux/ftrace.h> + +static void sysrq_ftrace_dump(int key, struct tty_struct *tty) +{ + ftrace_dump(); +} +static struct sysrq_key_op sysrq_ftrace_dump_op = { + .handler = sysrq_ftrace_dump, + .help_msg = "dumpZ-ftrace-buffer", + .action_msg = "Dump ftrace buffer", + .enable_mask = SYSRQ_ENABLE_DUMP, +}; +#else +#define sysrq_ftrace_dump_op (*(struct sysrq_key_op *)0) +#endif static void sysrq_handle_showmem(int key, struct tty_struct *tty) { @@ -408,7 +424,7 @@ static struct sysrq_key_op *sysrq_key_table[36] = { NULL, /* x */ /* y: May be registered on sparc64 for global register dump */ NULL, /* y */ - NULL /* z */ + &sysrq_ftrace_dump_op, /* z */ }; /* key2index calculation, -1 on invalid index */ |