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Date: Sat, 21 Nov 2009 13:38:00 GMT From: tip-bot for Paul Mundt <lethal@...ux-sh.org> To: linux-tip-commits@...r.kernel.org Cc: acme@...hat.com, mingo@...hat.com, stern@...land.harvard.edu, efault@....de, peterz@...radead.org, jirislaby@...il.com, fweisbec@...il.com, rostedt@...dmis.org, tglx@...utronix.de, mhiramat@...hat.com, linux-kernel@...r.kernel.org, hpa@...or.com, paulus@...ba.org, arjan@...ux.intel.com, lizf@...fujitsu.com, jan.kiszka@....de, lethal@...ux-sh.org, prasad@...ux.vnet.ibm.com, mingo@...e.hu, avi@...hat.com Subject: [tip:perf/core] ksym_tracer: Support read accesses independent of read/write. Commit-ID: 676c0dbe6e514fdd8e434a9e623c781aa9b40b15 Gitweb: http://git.kernel.org/tip/676c0dbe6e514fdd8e434a9e623c781aa9b40b15 Author: Paul Mundt <lethal@...ux-sh.org> AuthorDate: Mon, 9 Nov 2009 17:37:34 +0900 Committer: Frederic Weisbecker <fweisbec@...il.com> CommitDate: Tue, 10 Nov 2009 11:10:08 +0100 ksym_tracer: Support read accesses independent of read/write. All of the infrastructure already exists to support read accesses for platforms that support a read access independently of read/write (such as in the case of the SuperH UBC). This just trivially hooks up the read case by itself. Signed-off-by: Paul Mundt <lethal@...ux-sh.org> Cc: Ingo Molnar <mingo@...e.hu> Cc: Li Zefan <lizf@...fujitsu.com> Cc: Prasad <prasad@...ux.vnet.ibm.com> Cc: Alan Stern <stern@...land.harvard.edu> Cc: Peter Zijlstra <peterz@...radead.org> Cc: Arnaldo Carvalho de Melo <acme@...hat.com> Cc: Steven Rostedt <rostedt@...dmis.org> Cc: Jan Kiszka <jan.kiszka@....de> Cc: Jiri Slaby <jirislaby@...il.com> Cc: Avi Kivity <avi@...hat.com> Cc: Paul Mackerras <paulus@...ba.org> Cc: Mike Galbraith <efault@....de> Cc: Masami Hiramatsu <mhiramat@...hat.com> Cc: Arjan van de Ven <arjan@...ux.intel.com> LKML-Reference: <20091109083733.GA25848@...ux-sh.org> Signed-off-by: Frederic Weisbecker <fweisbec@...il.com> --- kernel/trace/trace_ksym.c | 11 ++++++++++- 1 files changed, 10 insertions(+), 1 deletions(-) diff --git a/kernel/trace/trace_ksym.c b/kernel/trace/trace_ksym.c index fea83ee..11935b5 100644 --- a/kernel/trace/trace_ksym.c +++ b/kernel/trace/trace_ksym.c @@ -136,6 +136,7 @@ static int ksym_trace_get_access_type(char *str) access |= HW_BREAKPOINT_X; switch (access) { + case HW_BREAKPOINT_R: case HW_BREAKPOINT_W: case HW_BREAKPOINT_W | HW_BREAKPOINT_R: return access; @@ -239,7 +240,9 @@ static ssize_t ksym_trace_filter_read(struct file *filp, char __user *ubuf, hlist_for_each_entry(entry, node, &ksym_filter_head, ksym_hlist) { ret = trace_seq_printf(s, "%pS:", (void *)entry->ksym_addr); - if (entry->type == HW_BREAKPOINT_W) + if (entry->type == HW_BREAKPOINT_R) + ret = trace_seq_puts(s, "r--\n"); + else if (entry->type == HW_BREAKPOINT_W) ret = trace_seq_puts(s, "-w-\n"); else if (entry->type == (HW_BREAKPOINT_W | HW_BREAKPOINT_R)) ret = trace_seq_puts(s, "rw-\n"); @@ -414,6 +417,9 @@ static enum print_line_t ksym_trace_output(struct trace_iterator *iter) return TRACE_TYPE_PARTIAL_LINE; switch (field->type) { + case HW_BREAKPOINT_R: + ret = trace_seq_printf(s, " R "); + break; case HW_BREAKPOINT_W: ret = trace_seq_printf(s, " W "); break; @@ -488,6 +494,9 @@ static int ksym_tracer_stat_show(struct seq_file *m, void *v) access_type = entry->type; switch (access_type) { + case HW_BREAKPOINT_R: + seq_puts(m, " R "); + break; case HW_BREAKPOINT_W: seq_puts(m, " W "); break; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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